KR20160046687A - Sewage treatment system - Google Patents

Abstract

Disclosed are a sewage treatment system and a control method thereof. According to an embodiment of the present invention, the sewage treatment system minimizes the number of level sensors detecting the amount of stored sewage and treatment water and reduces costs required to manufacture and install the system. Also, the sewage treatment system is controlled to generate different warnings depending on parts of the system which need to be inspected when the system abnormally operates in process of treating the sewage, thereby reducing time and effort required to repair and inspect the system and improving safety of operating the system. In addition, the sewage treatment system uses switching mode power supply (SMPS) to supply power to an electrolysis means with a consistent amount of voltage, and thus can extend lifespan of the electrolysis means while saving power required for electrolysis. Also, the system mixes electrolyzed water with the treatment water and discharges the mixture, thereby lowering the concentration of sodium hypochlorite in the treatment water and minimizing influences on the environment.

Description

[0001] SEWAGE TREATMENT SYSTEM [0002]

The present invention relates to a wastewater treatment system for electrolyzing wastewater, which minimizes the number of level sensors for detecting the amount of stored wastewater and the stored amount of wastewater generated by electrolysis of wastewater, To a wastewater treatment system capable of extending the wastewater treatment system.

A wastewater treatment system for electrolyzing wastewater containing waste manure and domestic wastewater discharged from a toilet is provided with a wastewater storage tank for storing wastewater and a means for measuring the amount of stored wastewater is generally provided in the wastewater storage tank .

Flammable gas such as methane gas may be generated in the wastewater stored in the wastewater storage tank, and explosive hydrogen gas may be generated in the process of electrolyzing the wastewater. When these materials are ignited, there is a high possibility of an accident such as an explosion or a fire. Therefore, the wastewater treatment system is carefully designed so that the electric sparks do not come into contact with these materials.

In particular, the level sensors installed in the treatment water storage tank storing the treated water generated by the electrolysis of the sewage water and the sewage water must use the level sensor designed for explosion-proof type since they are in direct contact with the sewage and treated water. Since the explosion-proof level sensor is manufactured to have high airtightness, the price is considerably higher than that of a general level sensor.

A wastewater treatment system using a level sensor is disclosed in Korean Patent Registration No. 10-1157145 (hereinafter referred to as "Patent Document 1") proposed by the present applicant. In the illustrated Patent Document 1, a plurality of level sensors are provided to sense the amount of wastewater or treated water.

However, since such a level sensor is quite expensive as described above, application of a plurality of level sensors becomes one of the main causes for increasing the cost of constructing the wastewater treatment system.

Therefore, there is an urgent need to reduce the number of level sensors provided in the wastewater treatment system.

Also, since the sewage treated by the wastewater treatment system contains a large amount of solid matter, there is a case where the solidification is accumulated in the pipe during the operation of the wastewater treatment system, the pipe is clogged, the wastewater or the treated water does not flow smoothly .

At present, the wastewater treatment system merely generates an emergency alarm when an abnormality as described above occurs. However, when an emergency alarm occurs, the entire system must be inspected to find the problematic part, so that the repair or maintenance of the wastewater treatment system It takes a lot of time and effort.

On the other hand, in the manure disposal apparatus disclosed in Patent Document 1, the electric power is applied so that the upper plate and the lower plate have opposite polarities, and the wastewater is electrolyzed according to the flow of electric current through the wastewater. So that the wastewater flowing between the upper plate and the lower plate may have a partially different electrical resistance.

At this time, the amount of current is excessively increased at a portion having a high electrical resistance, and sparks may be generated. This spark may cause hydrogen gas as described above, or a part of the top plate and the bottom plate may be damaged. If a portion of the upper plate and the lower plate is damaged due to the occurrence of spark, a part of the ion components included in the wastewater is fixed to that portion to form a scale, so that the fluidity of the wastewater may be deteriorated.

Patent Registration No. 10-1157145 (Title of invention: Manure disposal system and manure disposal method using manure disposal system, registered on June 11, 2012)

Embodiments of the present invention are intended to minimize the number of level sensors that sense the amount of stored sewage and treated water.

The embodiments of the present invention are intended to save power for electrolysis and prolong the life of the electrolysis means.

In addition, the embodiment of the present invention is intended to minimize the influence of discharged process water on the environment.

According to an aspect of the present invention, there is provided a sewage collecting system including: a sewage storage tank for storing sewage; a sewage amount sensing means for sensing an amount of the sewage stored in the sewage storage tank; A flow rate adjusting unit connected to the other side of the flow rate adjusting unit and supplied with electrolytic water; and an electrolytic water supply unit connected to the electrolytic water supply unit, An electrolytic water inflow inlet disposed in the electrolytic water inflow inlet, a process water reservoir connected to the other side of the flow rate control unit through a transfer pipe, a transfer valve installed in the transfer pipe, A process water sensing means for sensing an amount of process water stored in the water storage tank, a discharge pipe connected to the process water storage tank, And a control unit for controlling the operation of the electrolytic unit, the opening and closing of the transfer valve, the opening and closing of the electrolytic water inflow valve, the operation of the transfer pump And a sewage treatment system in which the operation direction and the operation of the discharge pump are regulated, respectively, can be provided.

The sewage amount sensing means includes a first level sensor disposed on the lower side of the wastewater storage tank, a second level sensor disposed on the upper side of the first level sensor, and a third level sensor disposed on the upper side of the second level sensor .

The treatment amount sensing means may include a fourth level sensor disposed on the lower side of the process water storage tank and a fifth level sensor disposed on the upper side of the fourth level sensor.

Alternatively, the treated quantity sensing means may include a fourth level sensor disposed on the lower side of the treated water storage tank, a fifth level sensor disposed on the upper side of the fourth level sensor, 6-level sensor may be included.

The electrolytic cell of the present invention may further include a direct current power supply for supplying a direct current to the electrolytic means, wherein the electrolytic means comprises a plurality of electrolytic tube portions each having a tubular shape, An electrolytic body having an electrolytic body and a plurality of connecting tube portions alternately connected such that a pair of adjacent ones of the plurality of electrolytic tube portions are connected to each other; And a plurality of electrode rods respectively coupled to the plurality of insulating caps so as to protrude into the plurality of the electrolytic tube portions in a shape penetrating through the plurality of insulating caps, And the electrode is electrically connected to the anode of the direct current power source, and the electrode is electrically connected to the anode of the direct current power source Can.

Here, the inner surface of the portion where the electrolytic pipe portion and the connection pipe portion are connected may be formed to have a curved shape.

The electrolytic tube portion and the connection tube portion may be made of titanium or the inner surface may be coated with titanium, and the electrode rod may be coated with iridium.

The wastewater treatment system may further include an ultrasonic vibrator coupled to the electrolysis body and applying ultrasonic vibration to the electrolysis body.

The DC power supply means may be an SMPS and may further include an ammeter installed in the SMPS and measuring an amount of electric power supplied to the electrolysis means.

A control valve connected to the electrolytic means on one side and connected to the electrolytic milk infusion inlet and the transfer tube; a control valve installed on the control tube to adjust an opening degree of the control tube; And a check valve installed in the bypass pipe and allowing the electrolytic water introduced through the electrolytic milk infusion inlet to flow only in the direction of the electrolytic solution.

The sewage treatment system includes an overflow pipe connecting the upper side of the wastewater storage tank and the upper side of the treated water storage tank to allow the sewage storage tank and the treated water storage tank to communicate with each other, And a vent pipe for allowing the gas inside to be discharged to the outside.

Wherein the sewage treatment system further comprises a crusher for crushing the solids contained in the fluid passing through the connection pipe, wherein the crusher is operated according to the signal emitted from the sewage amount sensing means and the treated water sensing means .

The sewage treatment system may further include a sump inlet connected to the sludge storage tank and connected to the sludge storage tank, and a fitting means provided in the sump inlet, wherein the filling means includes a housing installed in the sump inlet, A support having an opening formed in its bottom surface and a filter seated on the bottom surface of the support and having a plurality of through holes formed therein.

According to the embodiment of the present invention, the number of level sensors for sensing the amount of stored wastewater and treated water is minimized, thereby reducing the cost of manufacturing and installing the wastewater treatment system.

According to an embodiment of the present invention, by supplying power of a constant voltage to the electrolysis means using a switching mode power supply (SMPS), the life of the electrolysis means is prolonged, Power can be saved.

In addition, in the embodiment of the present invention, the electrolytic water is mixed and discharged to the treated water so that the concentration of the sodium hypochlorite contained in the treated water is lowered, thereby minimizing the influence on the environment.

1 is a schematic diagram of a wastewater treatment system according to an embodiment of the present invention.
Fig. 2 is an exploded perspective view of the filtering means shown in Fig.
3 is a flowchart for explaining a control method of the wastewater treatment system shown in FIG. 1
FIGS. 4 and 5 are views for explaining the operation of the flow rate regulator shown in FIG. 1;
6 is a schematic diagram of a wastewater treatment system according to another embodiment of the present invention.
7 is a perspective view illustrating the electrolysis means of the embodiment of the present invention.
8 is a view for explaining the internal structure of the electrolysis means shown in Fig. 7

The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated and described in the drawings. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a wastewater treatment system according to an embodiment of the present invention.

1, a wastewater treatment system 100 according to an embodiment of the present invention includes a wastewater reservoir 110, a water amount sensing unit 120, a filtering unit 130, an electrolysis unit 140, an SMPS 141 A treatment water storage means 150, a treated water detection means 160, a sewage water inlet pipe 171, an electrolytic water supply inlet pipe 172, a control pipe 173, a connection pipe 174, a transfer pipe 175, 176, a transfer pump 181, a discharge pump 182, an electrolytic water inflow valve 183, a transfer valve 184, a check valve 188, a flow control unit 190, and the like.

The wastewater storage tank 110 is a tank in which wastewater flowing through the wastewater inlet pipe 171 is stored. The waste water storage tank 110 can be manufactured to have a proper capacity and shape at the place where it is installed.

For reference, the wastewater treatment system 100 according to an embodiment of the present invention can be applied to various places such as a transportation means on which a large number of passengers such as a ship or a train are aboarded to travel for a long time, a portable toilet installed on a construction site or a park.

Therefore, the sewage may include various kinds of sewage discharged from the toilet, living sewage discharged from the bathroom or the kitchen, and such sewage may contain a large amount of solid matter such as feces or food waste.

The filtering means 130 is installed in the wastewater inlet pipe 171 and is not water-soluble and disassembled by electrolysis, such as disposable diapers, sanitary napkins, plastic bags, cigarette butts, It is to filter substances that are not. The filtering means 130 will be described with reference to Fig.

Fig. 2 is an exploded perspective view of the filtering means 130 shown in Fig.

Referring to FIG. 2, the filtering means 130 includes a housing 131, a support 133, and a filter 137.

The housing 131 is installed in the waste water inlet pipe 171 and an insertion space 131a into which the support body 133 is inserted is formed in the housing 131. [ At this time, the insertion space 131a is formed so as to be in communication with the inside of the sewage inlet 171.

A plurality of fastening holes 132 are formed at one side edge of the housing 131.

The supporting body 133 has a container shape having an upper surface opened and a receiving space 133a formed therein, and is inserted into the insertion space 131a or can be taken out to the outside. Although not shown, an opening is formed in the bottom surface of the support 133.

On one side of the support body 133, a cover panel 134 and a pulling handle 135 are provided.

A plurality of fastening holes 136 are formed at the edges of the cover panel 134. The plurality of fastening holes 136 are formed in the number and positions corresponding to the plurality of fastening holes 132 formed in the housing 131 do.

The withdrawal handle 135 may be formed to protrude from the cover panel 134 as shown or may be formed to be embedded in the cover panel 134 to facilitate gripping the cover panel 134, though not shown. That is, the withdrawing handle 135 is formed so that the support 133 can be easily inserted into the housing 131 or can be easily taken out from the housing 131. [

The filter 137 is seated on the bottom surface of the accommodation space 133a formed in the support 133. [ As the filter 137, a perforated plate or a mesh having a plurality of through holes may be used, and a plurality of through holes having a size not to be closed by the feces contained in the wastewater may be selected and used.

Here, the filter 137, which is seated on the bottom surface of the accommodation space 133a, is arranged to cover an opening (not shown) formed on the bottom surface of the support 133.

When the support body 133 is inserted into the housing 131, the fastening unit 138 is fastened to the fastening hole 132 through the fastening hole 136 so that the support body 133 is fixedly coupled to the housing 131 can do.

As described above, when the wastewater flowing through the wastewater inlet pipe 171 contains substances which are not water-soluble and can not be electrolyzed, they are filtered by the filter 137 and remain in the accommodation space 133a .

The supporting body 133 can be taken out from the housing 131 and the supporting body 133 can be intermittently taken out from the housing 131 and accumulated in the accommodating space 133a The material can be removed.

In order to prevent the wastewater passing through the wastewater inlet pipe 171 from flowing out between one side of the housing 131 and the cover panel 134 when the supporting body 133 is inserted into the housing 131, 134 and the housing 131, a sealing member (not shown) may be interposed.

Referring again to FIG. 1, the sewage amount sensing means 120 is installed in the waste water storage tank 110. The sewage amount sensing means 120 includes a first level sensor 121, a second level sensor 122, a third level sensor 123, a head 125 and a first support member 126.

One end of the first support member 126 may be coupled to the inner bottom surface of the waste water storage tank 110, and the other end may be connected to the upper side. The first support member 126 is for fixing the first to third level sensors 121, 122 and 123 in a predetermined position in the waste water storage tank 110.

A circuit for receiving and processing electrical signals of the first to third level sensors 121, 122 and 123 may be incorporated in the head 125. To this end, the first to third level sensors 121, 122 and 123 are connected to the head 125 by a plurality of cables 124.

The plurality of cables 124 may be fixed to the first support member 126 by fastening means such as a binder or a clip. In this case, the first to third level sensors 121, 122, Place it in the proper position.

The first to third level sensors 121, 122 and 123 are sequentially arranged from the lower side to the upper side of the wastewater storage tank 110. That is, as shown in the drawing, the first level sensor 121 is disposed inside the wastewater storage tank, the second level sensor 122 is disposed above the first level sensor 121, and the third level sensor 123 Is disposed on the upper side of the second level sensor 122.

Accordingly, the amount of wastewater stored in the waste water storage tank 110 can be sensed by sensing the level of the wastewater by the first to third level sensors 121, 122, and 123.

Meanwhile, the first to third level sensors 121, 122 and 123 and the fourth and fifth level sensors 161 and 162 to be described below may be required to be replaced due to deterioration due to prolonged use have.

The lower end of the first support member 126 may be detachably coupled to the bottom of the waste water storage tank 110 and the lower end of the second support member 166 may be coupled to the bottom of the treated water storage tank 150 Can be detachably coupled to the bottom surface.

 Here, although not shown, a bracket provided on the bottom surface of the waste water storage tank 110 and an end of the first support member 126 are coupled to a releasable fastening member such as a bolt and a nut, The process water reservoir 150, and the second support member 166 may also be the same.

The head 125 of the sewage amount sensing means 120 and the head 165 of the treated water sensing means 160 may be detachably coupled to the waste water storage tank 110 and the process water storage tank 150, respectively.

That is, when the first to third level sensors 121, 122 and 123 are to be replaced, the lower end of the first support member 126 is separated from the bottom surface of the waste water storage tank 110, So that the sewage amount sensing means 120 is separated from the waste water storage tank 110, and then the sewage amount sensing means 120 can be replaced. This also applies to the case of the fourth and fifth level sensors 161 and 162.

For reference, as described above, the first to third level sensors 121, 122, and 123 and the fourth and fifth level sensors 161 and 162 to be described below are those that have been subjected to explosion proof authentication, An electrical part called a barrier for reducing a voltage and a current to be supplied may be used together in order to prevent spark from being generated in the contact. At this time, a barrier (not shown) may be installed in the head 125.

Here, the price of the explosion-proof level sensor is 100,000 won as of 2014, and the barrier is 20-300 thousand won, which may be several ten times as much as the general level sensor of 1 to 20,000 won. Therefore, as the number of level sensors 121, 122, 123, 161, 162 used in the wastewater treatment system 100 is minimized, the manufacturing and installation cost of the wastewater treatment system 100 can be reduced.

Alternatively, relays may be used instead of barriers to reduce the cost of manufacturing the sewage treatment system 100.

That is, the water level detection of the first to fifth level sensors 121, 122, 123, 161 and 162 causes electric signals having voltages and currents of such a magnitude as not to generate sparks to be transmitted to the relays, The discharge pump 182, the electrolytic water inflow valve 183, and the like by a low-power electrical signal that has been supplied to the transfer pump 181, the electrolytic water inflow valve 183, and the like.

Here, as relays, it is possible to select and use those that have little possibility of sparking during operation, such as an optical relay or a solid state relay (SSR).

The electrolytic means 140 is a means for electrolyzing the mixture S in which the wastewater stored in the wastewater storage tank 110 and the electrolytic water to be described below are mixed. When the various substances contained in the wastewater are discharged to the outside, So as to be in a non-contaminated state. The electrolytic means 140 is an electrolytic type electrolytic type wastewater treatment device, which is disclosed in Patent Document 1 mentioned above and Korean Patent Application Publication No. 10-1245329 proposed by the present applicant ), Detailed description thereof will be omitted.

However, the wastewater treatment system 100 according to an embodiment of the present invention is provided with an exchange type power supply unit 141 (switching) installed in the electrolysis unit 140 to supply electric power of a constant voltage to the electrolysis unit 140, mode power supply, hereinafter referred to as " SMPS ").

The SMPS 141 and the ammeter (not shown) may further include an ammeter (not shown) installed in the SMPS 141 and measuring the amount of electric power supplied to the electrolysis unit 140, .

The waste water storage tank 110 and the electrolytic means 140 are connected through a connection pipe 174. [ The connection pipe 174 is connected to one side of the electrolysis means 140 and the connection pipe 174 is provided with a transfer pump 181 and a valve 186.

As shown in the figure, the flow rate regulator 190 is connected to the other side of the electrolysis unit 140, and the flow rate regulator 190 can regulate the flow rate of the passing fluid.

The flow control unit 190 includes a control tube 173 having one side connected to the other side of the electrolysis means 140 and a control valve 185 provided on the control tube 173, And a check valve 192 provided in the bypass pipe 191. The bypass pipe 191 is connected to the bypass pipe 191,

The control valve 185 may be configured such that a degree of opening of the control pipe 173 can be controlled by a driving means such as a manual or motor such as a niddle valve, So that the fluid passing through the bypass pipe 191 flows only in the direction of the electrolytic means 140.

The electrolytic milk infusion inlet 172 and the transfer tube 175 are connected to the other side of the flow control unit 190, that is, the other side of the control tube 173.

Electrolytic water is introduced into the electrolytic water inflow inlet 172. The electrolytic water may be either sea water or an electrolyte mixed with fresh water.

For example, when the wastewater treatment system 100 is installed on a ship, it is possible to allow the seawater introduced through the electrolytic feeding inlet 172 to be used as electrolytic water when the vessel is operating in the ocean, In the middle, it is possible to mix electrolytes such as salt into the river water to be used as electrolytic water.

An electrolytic water inflow valve 183 and a strainer 189 may be installed in the electrolytic water inflow inlet 172. The electrolytic water inflow valve 183 opens and closes the electrolytic water inflow inlet 172, and the strainer 189 filters the foreign substances contained in the electrolytic water. Although not shown, a filter or a screen for filtering foreign matter contained in seawater or fresh water may be further provided at the end of the electrolytic water inflow inlet 172.

Here, the electrolytic milk infusion inlet 172 is connected to a water supply pipe having a predetermined water pressure so that it can be used as cleaning water, cooling water, fire water or the like in the ship. When only the electrolytic water inflow valve 183 is opened without separate feeding means, 172, and, if necessary, a transport means such as a pump not shown in the electrolytic milk infusion inlet 172 can be provided.

Meanwhile, the transfer pipe 175 connected to the flow rate regulator 190 is connected to the process water reservoir 150. Therefore, the electrolytic unit 140 and the treated water storage tank 150 are connected to each other through the transfer pipe 175 via the flow rate control unit 190. The transfer tube 175 is provided with a transfer valve 184 and the transfer valve 184 opens and closes the transfer tube 175.

The treated water storage means 150 is a tank in which the aforementioned treated water W is stored and the treated water detecting means 160 is installed in the treated water storage tank 150 to detect the stored amount of the treated water W.

The processed quantity sensing means 160 includes a fourth level sensor 161, a fifth level sensor 162, a head 165 and a second supporting member 166.

One end of the second support member 166 may be coupled to the inner bottom surface of the process water storage tank 150, and the other end may be connected to the upper side. The fourth level sensor 161 and the fifth level sensor 162 are connected to a head 165 installed above the process water reservoir 150 by a plurality of cables 164, And the fourth and fifth level sensors 161 and 162 are fixed to the second support member 166 by fastening means such as a clip.

Since the constituent elements of the processed quantity sensing means 160 correspond to each other, except that the number of the level sensors 161 and 162 is smaller than the number of the level sensors 161 and 162, ) Will be described in detail with reference to the description of the sewage amount detecting means 120.

A discharge pipe 176 is connected to the process water storage tank 150 and a discharge pump 182, a valve 187 and a check valve 188 are installed in the discharge pipe 176.

Here, the discharge pump 182 causes the treated water W to be discharged through the discharge pipe 176 to the outside of the wastewater treatment system 100, and its operation will be described below. The check valve 188 discharges the process water W through the discharge pipe 176 but does not allow an external substance to flow into the wastewater treatment system 100.

As described above, the air in the upper space of the waste water storage tank 110 may be mixed with a combustible gas such as methane gas generated in the wastewater. ) May be mixed with the hydrogen gas generated from the hydrogen gas.

If the combustible gas and the hydrogen gas are mixed with the air at a certain ratio, an explosion may occur due to sparks generated in the terminals of the electric parts included in the waste water treatment system 100.

In order to prevent this, an overflow pipe 177 and a vent pipe 176 for discharging the gas containing the combustible gas and the hydrogen gas to the outside of the wastewater treatment system 100 are disposed above the wastewater storage tank 110 and the treated water storage tank 150, (178) can be installed.

The overflow pipe 177 is installed to connect the upper side of the wastewater storage tank 110 and the upper side of the treated water storage tank 150 as shown in the figure and when gas containing methane gas or the like is accumulated in the wastewater storage tank 110 And flows through the overflow pipe 177 to the process water storage tank 150.

The vent pipe 178 is installed on the upper side of the process water storage tank 150 and accumulates gas containing hydrogen gas or the like in the process water storage tank 150 or accumulates gas introduced from the waste water storage tank 110, Vent pipe (178).

Although not shown, the end of the vent pipe 178 may extend outside the wastewater treatment system 100 to allow methane gas, hydrogen gas, or the like to be released into the atmosphere.

In this case, the overflow pipe 177 is provided in such a manner that when the mixture S of the wastewater and the electrolytic water is not discharged from the wastewater treatment tank 110 due to the failure of the transfer pump 181, Can flow to the treated water storage tank 150 through the overflow pipe 177 to prevent the wastewater from flowing back to the toilet (not shown) connected to the wastewater inlet pipe 171. [

For this purpose, the overflow pipe 177 may have a diameter enough to allow the wastewater containing solid matter, etc. to pass smoothly.

The wastewater treatment system 100 having the structure described above can be used to determine whether the electrolysis means 140 is operated or not according to the signals emitted from the waste water amount sensing means 120 and the treated water amount sensing means 160, The opening and closing of the electrolytic water inflow valve 183, opening and closing of the electrolytic water inflow valve 183, the operation of the transfer pump 181, the transfer direction, and the operation of the discharge pump 182, respectively.

On the other hand, in the wastewater treatment system 100 having the above-described configuration, when the electrolytic water inflow valve 183 is opened and the transfer pump 181 is operated to inflow the electrolytic water through the electrolytic water inflow inlet 172, Is introduced into the waste water storage tank (110) through the electrolytic means (140).

In this process, the substances remaining in the electrolytic unit 140 flow into the waste water storage tank 110 according to the flow of the electrolytic water, so that the inside of the electrolytic unit 140 is washed.

The reason why the electrolytic water is introduced into the wastewater storage tank 110 is that the electrolytic water is charged in an appropriate amount before the wastewater flows into the wastewater reservoir 110 in addition to the back flushing effect, So that the solid material contained in the wastewater can be prevented from being settled and fixed to the bottom surface of the wastewater storage tank 110. If sediment attached to the bottom surface of the wastewater storage tank 110 is present, And the viscosity of the mixture S formed by mixing the wastewater with the electrolytic water is lowered so that the fluidity of the mixture S is increased.

Accordingly, the connection pipe 174 can be connected to a portion near the bottom of the waste water storage tank 110 in order to increase the floating effect of the sedimented material on the bottom surface of the waste water storage tank 110 due to the inflow of the electrolytic water, Even when the mixture S of electrolytic water flows into the electrolytic means 140, the residual amount of the mixture in the waste water storage tank 110 can be minimized.

The valves 186 and 187 are connected to each other at the time of inspection and repair of the waste water storage tank 110, the transfer pump 181, the electrolytic means 140, the connection pipe 174 and the discharge pipe 176, And is used for opening and closing the pipe 174 and the discharge pipe 176. Valves other than the illustrated valves 186 and 187 may be additionally provided in other parts as needed.

The reference numeral 119, which is not described, is a tank filter. The tank filter 119 is installed at a portion where the connection pipe 174 is connected in the waste water storage tank 110, so that the solids contained in the mixture S To filter out substances that are not water soluble and that are not degraded by electrolysis.

The tank filter 119 may be formed to have various shapes such as a plate shape, a hemisphere shape, a top shape, and the like by using a material having a plurality of through holes, such as a mesh or a perforated plate. Lt; / RTI >

For reference, although not shown, the tank filter 119 and the filtering means 130 may not be installed in the wastewater treatment system 100, either of them may be installed, or both of them may be installed.

The operation of the sewage treatment system 100 will be described in detail with reference to FIG.

FIG. 3 is a flowchart for explaining the control method of the wastewater treatment system shown in FIG. 1 will be described together.

1 and 3, the control method of the wastewater treatment system 100 according to an embodiment of the present invention includes a backwashing step S10, a storing step S20, and an electrolysis step S30.

The backwashing step S10 is a step in which the electrolytic water is stored in the waste water storage tank 110 until the water level of the electrolytic water reaches the second level sensor 122, As shown in FIG.

That is, when neither the first to third level sensors 121, 122 and 123 are sensed by the water level sensing means 120 or only the first level sensor 121 senses the water level, When it is detected that the water level is below the first level sensor 121, the transfer valve 184 is closed by the control unit (not shown) that receives the signal issued by the head 125, and the control valve 185 and the electrolytic water The inflow valve 183 is opened and the transfer pump 181 allows the electrolytic water to flow into the waste storage tank 110 via the flow control unit 190 and the electrolytic means 140.

At this time, a control unit (not shown) prevents power to be supplied to the electrolysis unit 140 so that the operation of the electrolysis unit 140 is stopped.

In the course of this process, the electrolytic water in the electrolytic unit 140 flows into the electrolytic water storage tank 110 in accordance with the flow of the electrolytic water, (S10).

As the electrolytic water is introduced into the wastewater storage tank 110, the water level sensed by the water amount sensing means 120 reaches the second level sensor 122 via the first level sensor 121. The inflow of the electrolytic water, Until it is sensed by the second level sensor 122.

FIG. 4 shows the operation of the flow rate regulator 190 during the backwashing step S10.

4, the electrolytic water flowing into the electrolytic water inflow inlet 172 flows through the connecting pipe 173 and the bypass pipe 191 and flows into the electrolytic unit 140 at the other side do.

The check valve 192 is disposed so that the electrolytic water introduced from the electrolytic water inflow inlet 172 can flow in the direction of the electrolytic means 140. The check valve 192 is connected to the connection pipe 173 by the control valve 185, The electrolytic water can flow through the bypass pipe 191 irrespective of whether the control valve 185 is open or closed.

Therefore, the electrolytic water flows into the waste water storage tank 110 through the electrolytic unit 140 after passing through the flow rate control unit 190. At this time, since the transfer valve 184 is in the closed state, the electrolytic water does not flow into the transfer pipe 175.

1 and Fig. 3. Fig.

As the electrolytic water is introduced into the wastewater storage tank 110 by the above operation, the water level of the electrolytic water gradually increases. When the water level of the electrolytic water is increased to the second level sensor 122 through the first level sensor 121 The control unit (not shown), which has received the signal from the head 125, stops the operation of the transfer pump 181 and causes the electrolytic water inflow valve 183 to close the electrolytic water infusion inlet 172. Therefore, when the level of the electrolytic water reaches the position of the second level sensor 122, the inflow of the electrolytic water is stopped.

That is, in the backwashing step S10, the electrolytic water passing through the electrolytic unit 140 is backwashed so that the material remaining in the electrolytic unit 140 flows to the wastewater storage tank 110, The electrolytic water is introduced into the waste water storage tank 110 until the water level reaches the second level sensor 122.

The storing step S20 is a step in which the wastewater is stored in the wastewater storage tank 110.

As the wastewater flowing through the wastewater inlet pipe 171 is stored in the wastewater storage tank 110, the wastewater is mixed with the electrolytic water flowing into the wastewater storage tank 110 in the backwashing step S10, The water level gradually increases. Thus, the water level of the mixture S is sensed by the second level sensor 21 and gradually raised to become close to the third level sensor 123.

At this time, the feeding pump 181 and the electrolytic unit 140 are kept in a stopped state, and the electrolytic water inflow inlet 172 is kept closed by the electrolytic water inflow valve 183.

When the water level of the mixture S is sensed by the third level sensor 123 when the wastewater flows into the wastewater storage tank 110 and the water level reaches the third level sensor 123, S30) is started.

When the level of the mixture S in the wastewater storage tank 110 is detected to reach the third level sensor 123, the electrolysis step S30 is activated and the transfer valve 184 is activated The transfer pump 181 is operated and the mixture S is electrolyzed through the electrolytic means 140 to generate the treated water W. The treated water W is supplied to the flow control unit 190 And transferred to the process water storage tank 150.

The electrolysis step S30 continues until the water level of the mixture S in the wastewater storage tank 110 reaches the first level sensor 121 via the second level sensor 122 and the water level of the mixture S The operation of the electrolytic unit 140 and the transfer pump 181 is stopped when it is detected that the water level in the wastewater storage tank 110 is below the first level sensor 121.

In the electrolysis step S30, the transfer pump 181 transfers the mixture S in the wastewater storage tank 110 to the connection pipe 174, the electrolytic means 140, the flow control unit 190 and the transfer pipe 175 And then flows into the process water reservoir 150 sequentially.

In the electrolysis step S30, electric power having a constant current value is supplied to the electrolytic unit 140 by the SMPS 141 to electrolyticize the mixture S.

This is because the mixture S passing through the electrolytic means 140 is not in a physically homogeneous state, and therefore, there are a relatively large amount of solids, a relatively small amount of solids, and a large amount of electrolytic water.

The electrolysis of the mixture (S) has an effect proportional to the amount of current flowing through the mixture (S). However, as described above, the electric resistance of the portion of the mixture (S) having a small amount of electrolytic water and a large amount of solid matters is large, while a portion of electrolytic water containing a small amount of solid matters has a small electric resistance.

Assuming that a constant electric power is applied to the electrolytic means 140 in the ignorance of the magnitude of the electric resistance, when a portion of the mixture S having a small electric resistance flows, an excessive current The amount of electricity consumed is increased, whereas the amount of current is rapidly reduced at a portion where the electric resistance is large, so that the electrolysis is not properly performed.

Particularly, when a part of the mixture S having a very small electrical resistance flows, a short-circuit occurs in the electrolytic unit 140 and a spark may occur. If a spark occurs, the electrolytic unit 140 (Not shown) or an inner surface provided in the electrode pad (not shown) are damaged by the high temperature.

Although not shown, the inner surface or the electrode of the electrolytic means 140 is generally coated with various protective films in order to prevent damage or fixation of the mixture S during the electrolysis of the electrolyte S containing the electrolyte. However, when the above-described spark is generated, such a protective film is damaged, and various salts contained in the mixture S during the electrolysis are fixed to form a scale.

When scale is once formed on the inner surface or the electrode of the electrolytic means 140, salt is repeatedly adhered to the scale at the time of electrolysis to grow the scale. As the area of the scaled portion increases, the electrolytic means 140 The electrolytic efficiency decreases and the surface roughness of the inner surface of the electrolytic unit 140 increases with the growth of the scale, so that the fluidity of the mixture S may be lowered.

In order to solve this problem, it is necessary to periodically disassemble the electrolytic means 140 to remove the scale, to repair the damaged portion of the protective film, to replace the parts, and the like.

On the other hand, if the SMPS 141 is installed in the electrolytic unit 140 to allow a constant voltage to flow during electrolysis of the mixture S as in the present embodiment, It is possible to prevent the occurrence of the over current flow and the deterioration of the electrolysis efficiency. In particular, since no overcurrent flows during the electrolysis, electric power required for electrolysis is reduced.

As described above, the wastewater treatment system 100 according to the present embodiment prevents the fixing phenomenon of scales as described above, so that the time and cost required for maintenance and repair of the electrolytic unit 140 for removing the scale are saved The power consumption for operation can be reduced, and further, the use of fossil fuel consumed in a generator installed in a ship or the like is saved, thereby reducing the amount of generated carbon, thereby protecting the environment.

Meanwhile, hydrogen gas and hypochlorous acid are generated in two electrodes (not shown) having different polarities in the process of electrolysis of the mixture S, respectively. By this hypochlorous acid, Bacteria and the like are killed and the treated water W is purified.

As well known, hypochlorous acid also kills common bacteria, fungi and spore-forming bacteria in addition to Escherichia coli and Norovirus. When contacted with bacteria or organic matter, hypochlorous acid is reduced to water immediately after sterilization.

However, if the treated wastewater W is directly discharged into the ocean or river without hypochlorous acid being decomposed, normal microorganisms may be killed. Therefore, in order to reduce such side effects, the treated wastewater W is supplied to the treated water storage tank 150 Temporarily stored and exposed to the air to be decomposed, and then discharged to the outside of the wastewater treatment system 100.

If the treated water W is to be discharged in a state where the treated water W is not sufficiently stored after being stored in the treated water storage tank 150, the treated water W passing through the electrolytic means 140 flows into the treated water storage tank 150 The electrolytic water W and the electrolytic water are allowed to flow together through the transfer pipe 175 to the treated water storage tank 150 so that the electrolytic water can be diluted.

When the treated water (W) and electrolytic water are mixed, the concentration of hypochlorous acid per unit volume is lowered. Therefore, when discharged outside the wastewater treatment system (100), the effect on the environment can be minimized and the decomposition of hypochlorous acid . The concentration of diluted electrolytic water mixed with the treated water W can be realized by controlling the operation of the electrolytic water inflow valve 183 and the control valve 185, which will be described below.

 It is to be noted that electrolytic water mixed in the treated water W and introduced into the treated water storage tank 150 is collectively referred to as treated water W. [

FIG. 5 shows the operation of the flow rate regulator 190 during the electrolysis step S30.

Referring to FIG. 5, the treated water W generated through the electrolytic means 140 flows to the transfer pipe 175 via the adjustment pipe 173 as indicated by the dotted arrow. At this time, the treated water W having passed through the electrolytic means 140 is not flown through the bypass pipe 191 by the check valve 192.

The flow rate of the process water W passing through the flow rate control unit 190 is controlled by controlling the degree to which the control valve 185 closes the control pipe 173, And the mixing ratio of the treated water W and the electrolytic water can be adjusted when the opening degree of the control valve 185 is adjusted when the electrolytic water inflow valve 183 is opened and the electrolytic water is introduced.

More specifically, when the control valve 185 is fully opened, the electrolytic water is mixed in a large amount in the process water W. When the degree to which the control valve 185 closes the control pipe 173 becomes higher, The amount of the treatment water W to be treated is gradually reduced.

In this way, the concentration of hypochlorous acid in the treated water W stored in the treated water storage tank 150 can be adjusted as described above.

If enough time can be secured to store the process water W in the process water storage tank 150, the electrolytic water inlet valve 183 is not opened in the electrolysis step S30, ) So that only the treated water W electrolyzed by the mixture S is allowed to flow into the treated water storage tank 150.

The opening degree of the control valve 185 can be manually adjusted by the operator. (Not shown) for measuring the concentration of hypochlorous acid in the transfer pipe 175 or the treated water storage tank 150 and a control unit (not shown) The opening degree may be adjusted.

1, the SMPS 141 may be provided with an ammeter (not shown) for measuring the electric current supplied to the electrolysis unit 140. [ In the electrolytic unit 140, since a constant voltage is applied by the SMPS 141, the amount of current varies depending on the partial change in electric resistance of the mixture S.

The ammeter (not shown) measures the fluctuation of the amount of current. When the electric resistance of the mixture S is high, the electric current measured by the ammeter is raised. When the electric resistance of the mixture S is low, The current measured by the current sensor is reduced.

That is, when the current measured by the ammeter is increased, it can be judged that the amount of the electrolyte in the mixture S is relatively small and the amount of the solid matter to be decomposed is large, so that the mixture S is supplied to the electrolytic means 140 If the rate of passage is reduced, sufficient electrolysis can be achieved.

On the other hand, when the amount of current measured by the ammeter is reduced, it can be judged that the amount of the electrolyte is relatively large in the mixture S and the amount of the solid to be decomposed is small. If the passing speed is increased appropriately, the consumed power can be reduced.

Therefore, if the opening degree of the control valve 185 is adjusted according to the amount of current measured by the ammeter, the amount of the treatment water W passing through the flow rate control unit 190 can be adjusted, The flow rate of the mixture S passing through the gas-liquid separator can also be adjusted.

Accordingly, in this embodiment, by controlling the opening degree of the control valve 185, the mixture S can be sufficiently electrolyzed, and at the same time, the efficiency of the electric power using by the electrolysis means 140 can be maximized.

The adjustment of the opening degree of the adjusting valve 185 according to the amount of current measured by the ammeter can be manually performed by the user and the current signal measured by the ammeter is received by the control unit (not shown) It can be adjusted. This is referred to as a flow rate adjustment step S31, and the flow rate adjustment step S31 is performed during the electrolysis step S30.

The electrical resistance of the mixture S can be generated very frequently and the variation width thereof can also be varied so that the opening of the control valve 185 is controlled by the control unit in accordance with the amount of current measured by the ammeter The efficiency of electrolysis and the efficiency of power use can be maximized.

For reference, the above-described flow control unit 190 exemplifies one configuration, and the structure and the method of the flow control unit 190 may be changed as needed. The use of the bypass pipe 191 and the check valve 192 in the flow rate control unit 190 described above allows the electrolytic milk infusion 172 to be performed without regulating the opening degree of the control valve 185 in the backwashing step S10. So that the electrolytic water flowing through the electrolytic bath 190 can smoothly pass through the flow control unit 190.

As the electrolysis step S30 proceeds as described above, the amount of the treated water W flowing into the treated water storage tank 150 gradually increases, and the water level of the treated water W gradually increases.

Therefore, in the electrolysis step S30, the water level of the treated water W is first sensed by the fourth level sensor 161 disposed below the treated water storage tank 150, and then the inflow amount of the treated water W When the ascending water level reaches the fifth level sensor 162 as the water level is detected, that is, when the level of the treated water W is sensed by the fifth level sensor 162, an unillustrated drainage step is started .

In the discharge stage, the discharge pump 182 is operated so that the treated water W is discharged from the treated water storage tank 150 through the discharge pipe 176 to the outside of the wastewater treatment system 100.

On the other hand, as the electrolysis step S30 described above proceeds, the water level of the mixture S in the wastewater storage tank 110 gradually decreases. Therefore, it is normal that the water level of the mixture S is sequentially sensed by the first level sensor 121 from the third level sensor 123 via the second level sensor 122. [

As described above, when the mixture (S) in which the wastewater and the electrolytic water are mixed contains a large amount of solid matter, the mixture S is discharged from the wastewater storage tank 110 through the electrolytic means 140, 150 may be partially clogged or completely blocked. That is, the flow rate of the mixture S during the electrolysis step S30 may be slowed or the flow of the mixture S may be stopped.

When the mixture S is left in this state for a long time, the mixture S in the wastewater storage tank 110 reaches the full water level, the wastewater can not flow into the wastewater inlet 171, the wastewater flows back to the toilet connected to the wastewater inlet 171, The transfer pump 181 may be overloaded, resulting in overheating or failure.

Therefore, in the electrolysis step S30, the conveyance of the mixture S is normally performed, and a confirmation step S40 may be performed to confirm whether the conveyance of the mixture S is completed. If the conveyance is abnormal, the waste water treatment system 100 (Step S41) in which an alarm is generated so that the alarm is checked so as to be checked.

The alarm generated in the checking step S41 may be divided into two types depending on the situation.

The first alarm is a transfer alarm, which occurs when the mixture S flows from the wastewater reservoir 110 to the process water reservoir 150 but the flow rate is slow. That is, this may be the case where the flow path of the mixture S is partially clogged or the performance of the transfer pump 181 is deteriorated.

The water level of the mixture S reaches the third level sensor 123 and the water level of the mixture S is maintained within a predetermined time after the transfer pump 181 starts to operate so that the mixture S flows into the process water storage tank 150 The operation of the transfer pump 181 is stopped and a transfer abnormality alarm is generated when the first level sensor 121 and the second level sensor 122 are not reached. Here, the predetermined time may be determined by calculation or experiment.

The second alarm is a sludge high water level alarm, which occurs when the mixture S flows from the wastewater reservoir 110 to the treated water reservoir 150 little or none at all. That is, this may be the case where the flow path of the mixture S is severely clogged or the transfer pump 181 is not operated.

The water level of the mixture S reaches the third level sensor 123 until the transfer pump 181 starts to operate to flow the mixture S to the treated water storage tank 150 until the predetermined time is exceeded S is continuously sensed by the third level sensor 123, the operation of the transfer pump 181 is stopped and a sewage high water level alarm is generated. Here, the predetermined time may be determined by calculation or experiment.

When the feed abnormality alarm or the sewage high water level alarm is generated as described above, the state of the feed pump 181 is checked to check whether the feed pump 181 is abnormal or to repair or replace the feed pump 181, S and closing the valves 84, 85 and 86 installed in the flow path of the electrolytic solution S and checking whether the electrolytic means 140, the connecting pipes 73 and 74 and the transfer pipe 175 are blocked by the solids Appropriate treatment can be performed.

After the completion of the inspection step S41, the decomposed electrolysis step S30 can be completed. After the completion of the continuous operation of the wastewater treatment system 100 (S50), the backwashing step S10).

The electrolytic water flows to the wastewater storage tank 110 through the electrolytic means 140 as described above so that during the electrolysis step S30 the mixture S is decomposed during the electrolysis step S30, Backwashing may be performed in which the materials remaining in the decomposing means 140 are washed by the flowing electrolytic water. Therefore, it is possible to prevent foreign substances from being left in the electrolytic means 140 for a long time to be fixed.

On the other hand, even in the discharge stage, the treated water W may not be discharged smoothly from the treated water storage tank 150. That is, there may be a case where an abnormality occurs in the discharge pump 182, or the discharge pipe 176 is blocked for some reason.

The electrolytic step S30 may not be performed because the treated water can not be stored in the treated water storage tank 150 for a long time or the drain pump 182 is overloaded, May occur.

Accordingly, in the unillustrated drainage step, a step of checking whether drainage of the treated water W is normally performed may be performed, and in case the drainage is abnormal, an alarm may be generated so that the wastewater treatment system 100 is checked .

If there is an abnormality in the discharge of the treated water (W), the alarm generated can be divided into two types depending on the situation.

The first alarm is a discharge abnormality alarm. After the discharge level of the treated water W is sensed by the fifth level sensor 162 and the discharge pump 182 is operated, the water level of the treated water W is raised within a predetermined time When the fourth level sensor 161 is not reached, the operation of the transfer pump 82 may be stopped and an abnormal discharge alarm may be generated. Here, the predetermined time may be determined by calculation or experiment.

The second alarm occurs when the treated water W is discharged through the discharge pipe 176 with little or no discharge. That is, this may be the case where the discharge pipe 176 is heavily clogged or the discharge pump 182 is not operated.

The level of the process water W is lower than the level of the fifth level sensor 162 until the level of the process water W reaches the fifth level sensor 162 and the exhaust pump 182 is started to operate, The operation of the discharge pump 182 may be stopped and a treatment water level alarm may be generated. Here, the predetermined time may be determined by calculation or experiment.

If an abnormal discharge alarm or disposal water level alarm occurs, the valve 87 may be closed and the discharge pump 182 and the discharge pipe 176 checked to take appropriate action.

As described above, in the control method of the wastewater treatment system according to an embodiment of the present invention, when an abnormality occurs in the process of wastewater treatment, different alarms may be generated depending on the parts requiring inspection or repair.

Therefore, the time and effort required for repairing and checking the wastewater treatment system 100 can be saved, and safety can be improved by stopping the operation of the wastewater treatment system 100 immediately according to the situation.

The position where the first to third level sensors 21, 22 and 23 are disposed and the position where the fourth and fifth level sensors 61 and 62 are disposed in the process water storage tank 150 Can be determined in consideration of the shape and the capacity of the wastewater storage tank 110 and the treated water storage tank 150.

For reference, although not shown, a wastewater treatment system 100 according to an embodiment of the present invention includes a control unit not shown.

The control unit receives a signal according to the level of the mixture S sensed by the sewage amount sensing means 120 and a signal according to the level of the treated water W sensed by the treatment amount sensing means 160, And controls the opening and closing of the electrolytic water inflow valve 183 and the transfer valve 184 to control the operation and direction of the electrolytic water inflow valve 183 and the transfer valve 184, It is possible to generate the alarm signals as described above.

That is, a series of operations according to the control method of the wastewater treatment system according to an embodiment of the present invention can be automatically performed by the control unit.

FIG. 6 shows a schematic diagram of a wastewater treatment system according to another embodiment of the present invention.

Referring to FIG. 6, the wastewater treatment system 200 according to another embodiment of the present invention further includes a grinder 211 in comparison with the wastewater treatment system 100 according to the embodiment of the present invention described above, There is a difference that the quantity sensing means 260 further includes a sixth level sensor 263 in addition to the fourth level sensor 261 and the fifth level sensor 262.

The other components are the same as those of the wastewater treatment system 100 described above, so that redundant description is omitted. The cables 264 and the second support members 266 included in the treatment quantity sensing means 260 are the same as those of the cable 164 and the second support member 166 described above.

The crusher 211 is a device for crushing the solid contained in the fluid to be passed. That is, the crusher 211 is for crushing the solid contained in the mixture S and may be installed in the connecting pipe 174 as shown and disposed between the waste storage tank 110 and the valve 186 .

Since the solids are crushed to a small size during the passage of the mixture S through the crusher 211, the mixture S flowing to the electrolytic means 140 after passing through the crusher 211 becomes more electrolytic .

Although not shown in detail, the shredder 211 includes a blade for crushing solids and a motor for rotating the blades, and the motor is operated during the electrolysis step S30 described above. That is, the crusher 211 is operated when the mixture S is transferred from the waste storage tank 110 to the electrolytic unit 140 by the transfer pump 181.

The crusher 211 may be applied to the wastewater treatment system 100 according to the embodiment of the present invention described above.

The fourth level sensor 261 of the treatment quantity sensing means 260 is disposed below the process water storage tank 160 and the fifth level sensor 262 is disposed above the process water storage tank 160, The level sensor 263 is disposed on the upper side of the fifth level sensor 262.

The wastewater treatment system 200 according to another embodiment of the present invention operates as follows.

When electrolytic water mixed in the treated water or treated water generated through the electrolytic means 140 during the electrolysis step S30 as described above flows into the treated water storage tank 150, Is raised.

When the level in the elevated process water storage tank 150 reaches the fifth level sensor 262 through the fourth level sensor 261, the discharge pump 182 is operated so that the process water flows through the discharge pipe 176 To be discharged to the outside.

At this time, if the level of the treated water in the process water storage tank 150 is not reached to the fourth level sensor within a predetermined time after the discharge pump 182 is operated, the operation of the transfer pump 181 is stopped and the transfer valve 184 so as to prevent the process water or the electrolytic water from further flowing into the process water storage tank 150 and to generate an abnormal discharge alarm.

Alternatively, when the level of the process water in the process water storage tank 150 is sensed by the sixth level sensor 263, the operation of the transfer pump 181 is stopped and the transfer valve 184 is shut off to dispose the process water or the electrolytic water So that no further inflow into the water storage tank 150 is caused, and at the same time, a treated water level alarm is generated.

If a discharge alarm abnormality and a treatment water level alarm are generated, it is possible to check and repair the clogging of the discharge pipes 176 of the fourth to sixth level sensors 261, 262, 263 or the failure of the discharge pump 182.

The sixth level sensor 263 senses that the water level in the treated water storage tank 150 has risen excessively. When an abnormality occurs in the wastewater treatment system 200, There is an advantage that it can be detected more directly than the wastewater treatment system 100.

However, as described above, since the wastewater treatment system 200 includes one sixth level sensor 263 which is relatively more expensive than the wastewater treatment system 100 described above, the production cost of the wastewater treatment system 200 is slightly higher Is increased.

Therefore, the number of level sensors to be included in the wastewater treatment systems 100 and 200 can be minimized by taking into account the capacity of the wastewater treatment systems 100 and 200, the number of installed wastewater treatment systems, etc., The configuration can be selected and applied.

For reference, the flow regulator 190 may be omitted if necessary, and the SMPS 141 may be replaced by a general DC power supply (not shown).

That is, when the wastewater treatment system 100 or 200 as described above has a small amount of wastewater to be treated or can spend a large amount of time on the electrolysis of wastewater, the mixture S May be minimized so that the time for the mixture S to pass through the electrolysis means 140 is increased so that the mixture S is sufficiently electrolyzed.

Although not shown, if the installation of the flow control unit 190 is omitted, one end of the transfer pipe 175 and one end of the electrolytic water inflow inlet 172 may be directly connected to the other side of the electrolytic unit 140 .

FIG. 7 is a perspective view illustrating the electrolysis means of the embodiment of the present invention, and FIG. 8 is a view for explaining the internal structure of the electrolysis means shown in FIG. The electrolytic means will be described with reference to FIGS. 7 and 8. FIG.

7 and 8, the wastewater treatment system 100, 200 further includes DC power supply means (not shown) for supplying a DC current to the electrolysis means 140 when the electrolysis means 140 is activated .

The electrolytic means 140 includes a plurality of electrolytic bodies 147, a plurality of insulating caps 144, a plurality of electrode rods 145, and a plurality of circuit boxes 146. The electrolytic body 147 includes an electrolytic tube portion 142 and a connecting tube portion 143.

The electrolytic tube portion 142 is made of a positive electrode and has a tubular shape in which a hollow portion is formed. The plurality of electrolytic tube portions 142 may be formed to have the same length as shown, and a plurality of electrolytic tube portions 142 may be arranged around the longitudinal direction.

Although not shown, the number of the electrolytic tube portions 142 can be increased or decreased according to the amount of wastewater to be treated by the wastewater treatment systems 100 and 200, The disposition of the components of the wastewater storage 110, the treated water storage tank 150 and the like may be different from each other, so that the arrangement of the plurality of electrolytic tube portions 142 may be changed.

The plurality of connecting tube portions 143 are formed of a positive conductor like the electrolytic tube portion 142, and have a tubular shape in which a hollow portion is formed.

The plurality of connection tube portions 143 are alternately connected such that one pair of the adjacent ones of the plurality of electrolytic tube portions 142 are connected to each other. That is, since the electrolytic body 147 forms the passage through which the mixture S passes while being electrolyzed by the plurality of connecting tube portions 143 and the plurality of electrolytic tube portions 142, the volume occupied by the electrolytic body 147 The length of the flow of the mixture S can be maximized.

As shown in the figure, the plurality of connecting tube portions 143 connect a pair of adjacent ones of the plurality of electrolytic tube portions 142 to each other, and connect the electrolytic tube portion 142, Since the connecting tube portion 143 has a shape repeatedly connected to the other side of the tube portion 142, the passage through which the mixture S flows may have a zigzag shape.

And, as shown in the drawing, among the plurality of electrolytic tube portions 142

On the other hand, both ends of the plurality of electrolytic tube portions 142 have an open shape, and insulating caps 144 are respectively coupled thereto to seal the open both ends of the electrolytic tube portion 142.

The electrode rod 145 is disposed so as to protrude through the insulating cap 144 and protrude into the hollow portion formed inside the electrolytic pipe 142 at one side thereof. The electrode rod 145 may be fixed by the insulating cap 144.

Although not shown, the insulating cap 144 is provided to electrically isolate the electrolytic tube portion 142 and the electrode rod 145 from each other and seal the open both ends of the electrolytic tube portion 142, May be replaced by other shapes that can be used.

The electrolytic body 147 is electrically connected to the cathode of the DC power source means (not shown), and the electrode rod 145 is electrically connected to the anode of the DC power source means (not shown).

The surface forming the space formed by the inner surface of the electrolytic body 147, that is, the hollow portion of the electrolytic tube portion 142 and the hollow portion of the connecting tube portion 143, is a surface in which the mixture S flows smoothly, The hydrogen gas can be easily discharged to the outside of the electrolytic body 147 in accordance with the flow of the mixture S. For this, the inner surface of the portion where the electrolytic tube portion 142 and the connection tube portion 143 are connected may be formed to have a curved shape.

The electrolytic tube portion 142 and the connecting tube portion 143 may be made of titanium or a material coated with a stainless steel surface. This is to utilize lightweight properties with high structural strength of titanium. In addition, titanium has excellent corrosion resistance and is particularly resistant to chlorine ions, so that damage to the inner surface of the electrolytic body 147 is minimized by the chloride ion contained in the mixture (S) or the electrolytic water.

In the process of electrolyzing the mixture S, a spark may be generated between the electrolytic tube 142 and the connecting tube 143 and the electrode 145. By this spark, the electrolytic tube 142 and the connecting tube 143), even if a strong titanium oxide film formed on the inner surface is damaged, the oxide film is instantly regenerated and thus has a high corrosion inhibiting effect.

On the other hand, the electrode rod 145 may be coated with iridium. This is to prevent the electrode rod 145 from being gradually dissolved in the electrolysis process, and it is possible to form an insoluble electrode by iridium coating. In addition, when the electrode rod 145 coated with iridium is used, hypochlorous acid is generated in the electrolysis process and the disinfection effect can be obtained.

Although not shown, the wastewater treatment system 100, 200 may further include an ultrasonic vibrator (not shown) coupled to the electrolysis body 147 to apply ultrasonic vibration to the electrolysis body. An ultrasonic vibrator (not shown) is for preventing scale or the like generated in the electrolysis process from being adhered to the inner surface of the electrolytic tube portion 142 and the connecting tube portion 143 by applying ultrasonic vibration to the electrolytic body 147 .

The SMPS 141 may be an ammeter (not shown) for measuring the amount of electric power supplied to the electrolytic unit 140, May be further included.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined in the following claims. Other embodiments may easily be suggested by adding, changing, deleting, adding, or the like of components, but these are also within the scope of the present invention.

100, 200: sewage treatment system 110: sewage storage tank
120: water amount detecting means 121: first level sensor
122: second level sensor 123: third level sensor
124: cable 125: head
126: first support member 130:
131: housing 132: fastening hole
133: support body 134: cover panel
135: withdrawable handle 136: fastening hole
137: filter 138: fastening means
140: electrolysis means 150: treated water storage tank
160, 260: processed quantity sensing means 161: fourth level sensor
162, 262: fifth level sensor 164: cable
166: second support member 171:
172: electrolytic feeding infusion 174: connector
175: transfer pipe 176: discharge pipe
181: Transfer pump 182: Discharge pump
183: electrolytic water inflow valve 184: transfer valve
185: regulating valve 186, 187: valve
188: Check valve 190: Flow control unit
191: Bypass tube 192: Check valve
211: crusher 263: sixth level sensor
S: mixture W: treated water

Claims (14)

A sewage reservoir in which sewage is stored;
A waste water amount sensing means installed in the waste water storage tank for sensing an amount of the waste water stored in the waste water storage tank;
An electrolytic means having one side connected to the waste water reservoir by a connector;
A transfer pump installed in the coupling pipe;
A flow control unit for controlling the flow rate of the fluid that is connected to one side of the electrolytic unit and is connected to the other side of the electrolytic unit;
An electrolytic feeding inlet connected to the other side of the flow control unit and supplied with electrolytic water;
An electrolytic water inflow valve provided in the electrolytic water inflow inlet;
A process water reservoir connected to the other side of the flow rate regulator through a transfer pipe;
A transfer valve installed in the transfer pipe;
A process quantity sensing means installed in the process water storage tank and sensing an amount of process water stored in the process water storage tank;
A discharge pipe connected to the process water storage tank; And
And a discharge pump installed in the discharge pipe,
Wherein the operation of the electrolytic water supply unit is controlled based on whether the electrolytic water supply unit is operated, whether the electrolytic water supply unit is open or closed, whether the electrolytic water inflow valve is open or closed, Respectively.
Sewage treatment system.
The method according to claim 1,
The sewage amount sensing means
A first level sensor disposed below the waste water storage tank;
A second level sensor disposed above the first level sensor; And
And a third level sensor disposed on the upper side of the second level sensor
Sewage treatment system.
3. The method of claim 2,
The processed quantity sensing means
A fourth level sensor disposed below the process water storage tank; And
And a fifth level sensor disposed on the upper side of the fourth level sensor
Sewage treatment system.
3. The method of claim 2,
The processed quantity sensing means
A fourth level sensor disposed below the process water storage tank;
A fifth level sensor disposed above the fourth level sensor; And
And a sixth level sensor disposed on the upper side of the fifth level sensor
Sewage treatment system.
The method according to claim 3,
Further comprising DC power supply means for supplying a DC current to the electrolytic means,
The electrolytic means
A plurality of electrolytic tube portions each made of a positive electrode and having both ends opened and having a tubular shape and a plurality of connecting tube portions formed of a positive electrode and alternately connected so that one pair of adjacent and the other of the plurality of electrolytic tube portions are connected to each other, ;
A plurality of insulating caps each made of an insulator and each coupled to the open both ends of the plurality of electrolytic tubes to be sealed; And
And a plurality of electrode rods respectively coupled to the plurality of insulating caps so as to protrude into the plurality of electrolytic tube portions in a shape penetrating through the plurality of insulating caps,
The electrolytic body is electrically connected to the cathode of the direct current power source, and the electrode is electrically connected to the anode of the direct current power source
Sewage treatment system.
6. The method of claim 5,
And an inner surface of a portion where the electrolytic pipe portion and the connection pipe portion are connected is formed to have a curved shape
Sewage treatment system.
6. The method of claim 5,
Wherein the electrolytic tube portion and the connecting tube portion are made of titanium or the inner surface is coated with titanium
Sewage treatment system.
8. The method of claim 7,
The electrode is coated with iridium
Sewage treatment system.
6. The method of claim 5,
And an ultrasonic vibrator coupled to the electrolytic body and applying ultrasonic vibration to the electrolytic body
Sewage treatment system.
6. The method of claim 5,
The DC power supply means is an SMPS,
And an ammeter installed in the SMPS for measuring an amount of electric power supplied to the electrolytic unit
Sewage treatment system.
The method according to claim 3 or 4,
The flow rate regulator
One side of which is connected to the electrolytic means and the other side of which is connected to the electrolytic feeding inlet and the feeding tube;
A regulating valve installed in the regulating tube for regulating the degree of opening of the regulating tube;
A bypass tube having both ends connected to the control tube; And
And a check valve installed in the bypass pipe and allowing the electrolytic water introduced through the electrolytic milk infusion inlet to flow only in the direction of the electrolytic means
Sewage treatment system.
The method according to claim 3 or 4,
An overflow pipe connecting the upper side of the wastewater storage tank and the upper side of the treated water storage tank to allow the wastewater storage tank and the treated water storage tank to communicate with each other; And
And a vent pipe installed above the treated water storage tank for discharging the gas inside the treated water storage tank to the outside
Sewage treatment system.
The method according to claim 3 or 4,
Further comprising a grinder for grinding the solid material contained in the fluid that is installed in the coupling pipe and passes through the coupling pipe,
Wherein the grinder is operated according to the signal emitted by the sewage amount sensing means and the processed water sensing means
Sewage treatment system.
The method according to claim 3 or 4,
A sewage inlet connected to the sewage storage tank and having the sewage introduced therein; And
Further comprising a filtering means provided at the inlet of the sewage,
The filtering means
A housing installed at the inlet of the sewage water;
A support formed to be inserted into or withdrawn from the housing, the support having a container shape with an opened upper surface and an opening formed in the bottom; And
And a filter mounted on the bottom surface of the support and having a plurality of through holes formed therein
Sewage treatment system.

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