CN112093946B - Electrochemical enhanced pretreatment method for fluorenone wastewater - Google Patents
Electrochemical enhanced pretreatment method for fluorenone wastewater Download PDFInfo
- Publication number
- CN112093946B CN112093946B CN202010864718.0A CN202010864718A CN112093946B CN 112093946 B CN112093946 B CN 112093946B CN 202010864718 A CN202010864718 A CN 202010864718A CN 112093946 B CN112093946 B CN 112093946B
- Authority
- CN
- China
- Prior art keywords
- wastewater
- fluorenone
- water
- electrochemical
- resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
Abstract
The invention relates to an electrochemical strengthening pretreatment method of fluorenone wastewater, which comprises the following steps: adjusting the pH of the waste water produced in the fluorenone production to be 5-6 by using an acid-base pH regulator, performing resin adsorption, allowing the water to enter an electrochemical reactor after the resin adsorption, allowing the water from the electrochemical reactor to enter a graded filter material for filtration, and allowing the water to enter a carbon-based molecular sieve; back washing water of the graded filter material enters a precipitation-filter pressing system, and effluent of the precipitation-filter pressing system flows back to the water inlet end of the electrochemical system; and regenerating the resin after saturated adsorption by using a regeneration liquid, resolving pollutants adsorbed on the resin by using the regeneration liquid, and returning organic matters intercepted by the resin from the wastewater to the glass lining rectifying tower kettle for enriching, concentrating and recovering the fluorenone raw material. The invention provides a high-efficiency and reliable fluorenone wastewater pretreatment method. The method mainly utilizes an electrochemical strengthening pretreatment system to successfully solve the problem of the pretreatment of the fluorenone wastewater, realizes the breakthrough of the fluorenone wastewater pretreatment process, and ensures the subsequent treatment effect.
Description
Technical Field
The invention belongs to the technical field of wastewater treatment, and particularly relates to an electrochemical enhanced pretreatment method for fluorenone wastewater.
Background
Fluorenone is an important organic chemical intermediate, and is widely applied in the fields of pharmaceutical engineering, pesticides, optical engineering, plastic industry and the like. Fluorenone can be polymerized into bisphenol fluorene to be used for preparing heat-resistant and high-dielectric-strength matrix resin materials such as fluorenyl epoxy resin. Trinitrofluorenone prepared from fluorenone can be used as a polymerization guiding agent of the photoconductive material. The medicine, pesticide and dye prepared by using fluorenone as raw material also have higher market value. However, the production of fluorenone products by either the fluorenyl or non-fluorenyl methods results in large amounts of wastewater. In addition to fluorenone, the wastewater may contain a large amount of organic solvent and inorganic salts. Part of the organic solvent inhibits the growth of microorganisms and thus cannot directly enter the biochemical system.
CN103819024A provides a method for pretreating fluorenone production wastewater, which comprises two steps of acidification and active carbon-Fenton reagent oxidation. The water and oil are separated and recovered by acid precipitation, and the water phase enters an activated carbon-Fenton step. The COD removal rate of the effluent is higher, and the B/C value is obviously improved. But the inactivated active carbon can only be recycled as hazardous waste, and pollutants are adsorbed by the active carbon and the aim of degradation is not achieved.
In 11 th phase Wei Xueling of 2010 of environmental science and management, ozone catalytic oxidation is applied to fluorenone wastewater treatment, the decolorization rate of wastewater can reach 91.2% and the COD removal rate reaches 90.5% by using strong oxidizing properties of free radicals and ozone, but the problems of large equipment investment, high treatment cost and the like exist when the fluorenone wastewater is pretreated by adopting an ozone catalytic oxidation technology.
CN104803529A provides a method for treating aniline intermediate production wastewater. A triple-effect evaporator combined with resin adsorption is adopted, and salt product recovery and zero wastewater discharge can be realized. However, in practice there are four problems: 1. the multi-effect evaporator has large energy consumption which reaches 130-200% of an MVR evaporator, and the energy consumption per ton of water is high; 2. the method can realize zero discharge of wastewater only in a short period, the mother liquor enrichment phenomenon can occur when the system is operated for a long time, and if the mother liquor is not treated in time, the evaporation efficiency is influenced, and even the circular compression system is down; 3. the wastewater is treated by the system evaporation unit and then directly returns to the evaporator without advanced treatment, if the quality of inlet water of the system fluctuates, the quality of outlet water is changed violently, and then the wastewater returns to the evaporator, so that the result caused by the problem 2 can be generated, and the impact load is not resisted; 4. any system needs to ensure material balance.
Disclosure of Invention
The invention provides an electrochemical enhanced pretreatment method of fluorenone wastewater, and provides a high-efficiency and reliable fluorenone wastewater pretreatment method. The method mainly utilizes an electrochemical strengthening pretreatment system to successfully solve the problem of the pretreatment of the fluorenone wastewater, realizes the breakthrough of the fluorenone wastewater pretreatment process, and ensures the subsequent treatment effect.
In order to realize the purpose, the invention adopts the following technical scheme:
an electrochemical strengthening pretreatment method of fluorenone wastewater comprises the following steps:
adjusting the pH of the waste water produced in the fluorenone production to be 5-6 by using an acid-base pH regulator, performing resin adsorption, allowing the water to enter an electrochemical reactor after the resin adsorption, allowing the water from the electrochemical reactor to enter a graded filter material for filtration, and allowing the water to enter a carbon-based molecular sieve;
back washing water of the graded filter material enters a precipitation-filter pressing system, and effluent of the precipitation-filter pressing system flows back to the water inlet end of the electrochemical system; the graded filter material has the functions of intercepting undeposited suspended matters in the effluent of the electrochemical reaction, accumulating the suspended matters in the filter material, performing back flushing on the filter material by using clean water after the filtering speed is reduced to 3-6m/h, enabling the back flushing water to enter a precipitation-filter pressing system, ensuring that the effluent of the precipitation-filter pressing system has good water quality, and returning to the electrochemistry to be used as return water to dilute raw water to enter water.
And regenerating the resin after saturated adsorption by using a regeneration liquid, resolving pollutants adsorbed on the resin by using the regeneration liquid, and returning organic matters intercepted by the resin from the wastewater to the glass lining rectifying tower kettle for enriching, concentrating and recovering the fluorenone raw material.
The pretreatment unit adopts resin for adsorption and decoloration, removes COD, realizes interception and recovery of fluorenone raw materials in the wastewater, further removes COD and hardness by combining an electrochemical reactor, and ensures subsequent advanced treatment and recovery of high-purity sodium sulfate in the effluent quality by combining graded filter materials and a carbon-based molecular sieve, and simultaneously does not introduce other anions and cations, thereby efficiently reducing the COD of the wastewater, and the effluent can be directly recycled to reclaimed water or a water replenishing station.
The polar plates of the electrochemical reactor are iron-based polar plates, 11-16 iron-based polar plates are transversely stacked, the axial center positions between the polar plates are fixedly connected through an external thread tetrafluoro rod and a nut, high mechanical strength modified active coke is filled between the polar plates to form a three-dimensional electrode, a certain current density is ensured between a cathode plate and an anode plate, water enters from a pipeline at the bottom of one end, water exits from the top of the other end, and a centrifugal circulating pump is arranged at the belly of the electrochemical reactor.
The active coke raw material is powdered bituminous coal collected by a dust removal system of a crushing section in coking production, the binder is waste asphalt oil, the binder accounts for 15-30% of the total mass percent, water accounting for 1-10% of the total mass percent is added, the mixture enters a forming press after mixing, a formed product enters a blast furnace for carbonization, is kept for 20-50min at 600-700 ℃, then enters a rotary kiln for activation, and is kept for 100-300min at 700-750 ℃ to form active coke particles.
The amount of wastewater treated by the electrochemical reactor is 0.1-1m 3 H; the distance between the polar plates is 10cm-30cm; the current density between the cathode plate and the anode plate is 0-50 mA/cm 2 。
The acidic pH regulator is 92.5-98% concentrated sulfuric acid, and the alkaline pH regulator is 30-50% sodium hydroxide solution.
The regeneration liquid is ethanol with the concentration of 95-99%, the resin is regenerated every 30-45 days, the flow rate of the regeneration liquid is 0.8-1.2BV/h, the regeneration liquid is recycled by recovering the ethanol through a rectification device, and the concentration of the recovered ethanol is not lower than 92-95%.
The flow speed of the wastewater entering the resin for adsorption is 0.3-0.7BV/h.
The resin is fluorenyl selective modified high molecular polymer macroporous adsorption resin.
The graded filter material comprises the following raw materials: anthracite with the grain diameter of 10-15mm, volcanic ash silicic acid stone with the grain diameter of 4-8mm, quartz sand with the grain diameter of 2-4mm and quartz sand with the grain diameter of 1-2 mm. The pozzolanic silicate is formed by hydration, hardening and shaping of pozzolanic silicate cement in a mould to form pozzolanic silicate Dan Yingzhi particles, and has high mechanical strength and large specific surface area.
The sedimentation tank of the sedimentation-filter pressing system is 1-10m 3 PE tank or 1-10m 3 SMC water tank; the filter press is one of a plate-and-frame filter press, a stacked-screw filter press and a membrane filter press.
Compared with the prior art, the invention has the beneficial effects that:
1) In the pretreatment stage, the fluorenone raw material is separated from impurities by using selective resin, the fluorenone is refluxed to a rectifying tower for enrichment and recovery, and the resin effluent enters an electrochemical system. The bituminous coal ash and the waste asphalt oil collected by the dust removal system are used in an electrochemical system and are sintered into high-mechanical-strength active coke according to a proportion, and the active coke and the horizontal tower type laminated iron-based polar plate form a three-dimensional electrode, so that organic matters in water can be oxidized, the hardness of the water body can be reduced, and the water inlet requirement of subsequent advanced treatment (a crystallization evaporator) is ensured. The adsorption resin is mainly used for separating the fluorenone product out of a sewage system, so that the waste water COD and chroma are reduced, and the fluorenone product lost along with the waste water is recovered, thereby being beneficial to subsequent treatment;
2) In the invention, raw water is pretreated, fluorenone products are extracted for recycling, the effluent of the resin adsorption tower enters an electrochemical reactor to remove hardness and organic matters, the electrochemical effluent containing a large amount of suspended matters passes through the combination of graded filter materials and the carbon-based molecular sieve, and the effluent has low suspended matters and basically does not contain heavy metals. The fluorenone wastewater pretreatment system has the advantages of small occupied area, low investment cost, simple construction and simple and convenient operation. The effluent quality meets the requirement of advanced treatment on water inlet, has certain economic benefit and provides a reference scheme for pretreatment of the same kind of wastewater.
Drawings
Fig. 1 is a schematic structural view of a horizontal tower type laminated iron-based plate in the invention.
In the figure: 1-a cobalt-based alloy joint; 2-iron-based pole piece; 3-a polyamide fixing rod; 4-external thread tetrafluoro rod.
Detailed Description
The following embodiments are further illustrated by reference to the following specific examples:
the processes used in the following examples are conventional unless otherwise specified, and the materials, reagents and the like used in the following examples are commercially available unless otherwise specified:
[ example 1 ]
The water quality characteristics of the fluorenone wastewater to be treated are as follows:
| item | COD | Hardness of | Color intensity | TDS | TN | pH |
| Index (I) | 28697mg/L | 803mg/L | 78 times of | 48000mg/L | 468.2mg/L | 14 |
The electrochemical strengthening pretreatment method of the fluorenone wastewater comprises the following specific operation steps:
and (3) adjusting the pH value of the pretreated inlet water to 5.5 by using an acid-base pH regulator, feeding the pretreated inlet water into a resin adsorption tower at the flow rate of 0.5BV/H, and pumping the outlet water into an electrochemical reactor. The resin after adsorption saturation is regenerated by 97 percent ethanol at intervals of 30 days, and the flow rate of the regeneration liquid is 0.8BV/h. The regeneration solution is distilled to recover the regeneration solvent ethanol, the concentration of the recovered ethanol is 94%, and the regeneration solvent can be reused.
The wastewater treatment capacity of the electrochemical reactor is 0.5m 3 H, the distance between the pole plates is 15cm, and the horizontal tower type laminated iron-based pole plates are arranged; the active coke is filled in the gap between the polar plates, and the current density between the cathode plate and the anode plate is 20mA/cm 2 (ii) a The graded filter material is prepared from anthracite coal with particle size of 10-15mm, pozzolanic silicate stone with particle size of 4-8mm, and 2Quartz sand with grain size of-4 mm and 1-2 mm.
The sedimentation tank of the sedimentation-filter pressing system is 5m 3 SMC water tank. The filter press is a plate-and-frame filter press, suspended matters and sediments in backwash water are separated out from a water body in a mud form after the backwash water of the graded filter materials is subjected to precipitation-filter pressing, and effluent water is good in quality and can be used as dilution water of raw water to flow back to a water inlet end of the electrochemical reactor.
The heavy metals in the wastewater are further removed by the carbon-based molecular sieve from the effluent of the graded filter material.
[ example 2 ]
The water quality characteristics of the fluorenone wastewater to be treated are as follows:
| item | COD | NH3-N | Color intensity | TDS | TN | pH |
| Index (I) | 26130mg/L | 80.4mg/L | 70 times of | 65000mg/L | 450mg/L | 14 |
The electrochemical strengthening pretreatment method of the fluorenone wastewater comprises the following specific operation steps:
and (3) adjusting the pH value of the pretreated inlet water to 5.8 by using an acid-base pH regulator, feeding the pretreated inlet water into a resin adsorption tower at a flow rate of 0.3BV/H, and pumping the outlet water into an electrochemical system. The regeneration is carried out by 95 percent ethanol at intervals of 40 days, and the flow rate of regeneration liquid is 1.0BV/H. The regeneration solution is distilled to recover the ethanol serving as a regeneration solvent, the concentration of the ethanol is 92%, and the regeneration solvent can be reused.
The treatment capacity of the electrochemical reactor was 0.6m 3 H, the distance between the pole plates is 20cm, and the horizontal tower type laminated iron-based pole plates are arranged in a matrix form;
the active coke is filled in the gap between the polar plates, and the current density between the cathode plate and the anode plate is 30mA/cm 2 (ii) a The graded filter material consists of anthracite coal with the grain diameter of 10-15mm, volcanic ash silicate stone with the grain diameter of 4-8mm, quartz sand with the grain diameter of 2-4mm and 1-2 mm. The sedimentation tank of the sedimentation-filter pressing system is 5m 3 SMC bucket type water tank. The filter press is a plate-and-frame filter press, after the back washing water of the graded filter material is subjected to precipitation-filter pressing, suspended matters and precipitates in the back washing water are separated from a water body in a mud mode, and the effluent water has good quality and can be used as dilution water of raw water to flow back to the water inlet end of the electrochemical reactor.
The heavy metals in the wastewater are further removed by the carbon-based molecular sieve from the effluent of the graded filter material
[ example 3 ]
The water quality characteristics of the fluorenone wastewater to be treated are as follows:
| item | COD | NH3-N | Color intensity | TDS | TN | pH |
| Index (I) | 25421mg/L | 78.4mg/L | 74 times of | 53000mg/L | 431mg/L | 14 |
The specific operation steps are as follows:
step one, adjusting the pH value of pretreated inlet water to 6 by using an acid-base pH regulator, feeding the pretreated inlet water into a resin adsorption tower at a flow rate of 0.6BV/H, and pumping outlet water into an electrochemical system. The regeneration is carried out by 95 percent ethanol at intervals of 45 days, and the flow rate of regeneration liquid is 1.2BV/H. The regeneration solution is distilled to recover a regeneration solvent ethanol, the concentration of the ethanol is 90%, and the regeneration solvent can be reused.
The electrochemical reactor has a processing capacity of 1m 3 H, the distance between the pole plates is 10cm, and the horizontal tower type laminated iron-based pole plates are arranged in a matrix form;
the active coke is filled in the gap between the polar plates, and the current density between the cathode plate and the anode plate is 50mA/cm 2 (ii) a The graded filter material consists of anthracite coal with the grain diameter of 10-15mm, volcanic ash silicate stone with the grain diameter of 4-8mm, quartz sand with the grain diameter of 2-4mm and 1-2 mm. The sedimentation tank of the sedimentation-filter pressing system is 5m 3 SMC bucket type water tank. The filter press is a plate-and-frame filter press, after the back washing water of the graded filter material is subjected to precipitation-filter pressing, suspended matters and precipitates in the back washing water are separated from a water body in a mud mode, and the effluent water has good quality and can be used as dilution water of raw water to flow back to the water inlet end of the electrochemical reactor.
The heavy metals in the wastewater are further removed by the carbon-based molecular sieve from the effluent of the graded filter material
TABLE 1 Crystal evaporator acceptance Standard
Table 2 examples 1-3 pretreated effluent quality
As can be seen from tables 1 and 2, the quality of the effluent after the pretreatment of the fluorenone wastewater in the embodiments 1-3 meets the water inlet requirement of the crystallization evaporator, and the effluent can enter the advanced treatment unit for further advanced treatment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (7)
1. The electrochemical strengthening pretreatment method of the fluorenone wastewater is characterized by comprising the following steps:
adjusting the pH of the fluorenone production wastewater to be 5-6 by using an acid-base pH regulator, performing resin adsorption, allowing the water to enter an electrochemical reactor after the resin adsorption, allowing the water from the electrochemical reactor to enter a graded filter material, filtering, and allowing the water to enter a carbon-based molecular sieve;
the graded filter material has the functions of intercepting undeposited suspended matters in the effluent of the electrochemical reaction, the suspended matters can be accumulated in the filter material, when the filtering speed is reduced to 3-6m/h, the filter material is backwashed by clean water, the backwashed water of the graded filter material enters a precipitation-filter pressing system, and the effluent of the precipitation-filter pressing system flows back to the water inlet end of the electrochemical system;
regenerating the resin after saturated adsorption by using a regeneration liquid, resolving pollutants adsorbed on the resin by using the regeneration liquid, returning organic matters intercepted by the resin from the wastewater to a tower kettle, enriching, concentrating and recovering a fluorenone raw material;
the polar plates of the electrochemical reactor are iron-based polar plates, 11-16 iron-based polar plates are transversely stacked, the axial center positions of the polar plates are fixedly connected with nuts through external thread tetrafluoro rods, and active coke is filled between the polar plates to form a three-dimensional electrode;
the active coke raw material is powdered bituminous coal collected by a dust removal system of a crushing section in coking production, the binder is asphalt oil, the binder accounts for 15-30% of the total mass percent, water accounting for 1-10% of the total mass percent is added, the mixture enters a forming press after mixing, a formed product enters a blast furnace for carbonization, is kept for 20-50min at 600-700 ℃, then enters a rotary kiln for activation, and is kept for 100-300min at 700-750 ℃ to form active coke particles;
the graded filter material comprises the following raw materials: anthracite with the grain diameter of 10-15mm, volcanic ash silicic acid stone with the grain diameter of 4-8mm, quartz sand with the grain diameter of 2-4mm and quartz sand with the grain diameter of 1-2 mm.
2. The method for electrochemical enhanced pretreatment of fluorenone wastewater as claimed in claim 1, wherein the amount of wastewater treated by the electrochemical reactor is 0.1-1m 3 H; the distance between the polar plates is 10cm-30cm; the current density between the cathode plate and the anode plate is 0-50 mA/cm 2 。
3. The electrochemical strengthening pretreatment method of fluorenone wastewater as claimed in claim 1, wherein the acidic pH regulator is 92.5% -98% concentrated sulfuric acid, and the alkaline pH regulator is 30% -50% sodium hydroxide solution.
4. The electrochemical strengthening pretreatment method of fluorenone wastewater as claimed in claim 1, wherein the regeneration liquid is ethanol with a concentration of 95% -99%, the resin is regenerated every 30-45 days, and the flow rate of the regeneration liquid is 0.8-1.2BV/h.
5. The electrochemical strengthening pretreatment method of fluorenone wastewater as claimed in claim 1, wherein the water flow rate of wastewater entering the resin adsorption is 0.3-0.7BV/h.
6. The electrochemical strengthening pretreatment method of fluorenone wastewater according to claim 1, wherein the resin is fluorenyl selective modified high molecular polymer macroporous adsorption resin.
7. The electrochemical strengthening pretreatment method of fluorenone wastewater according to claim 1, wherein the sedimentation tank of the sedimentation-filter pressing system is 1-10m 3 PE tank or 1-10m 3 SMC water tank; the filter press is one of a plate-and-frame filter press, a stacked-screw filter press and a membrane filter press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010864718.0A CN112093946B (en) | 2020-08-25 | 2020-08-25 | Electrochemical enhanced pretreatment method for fluorenone wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010864718.0A CN112093946B (en) | 2020-08-25 | 2020-08-25 | Electrochemical enhanced pretreatment method for fluorenone wastewater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112093946A CN112093946A (en) | 2020-12-18 |
| CN112093946B true CN112093946B (en) | 2022-12-02 |
Family
ID=73753411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010864718.0A Active CN112093946B (en) | 2020-08-25 | 2020-08-25 | Electrochemical enhanced pretreatment method for fluorenone wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112093946B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2923823A1 (en) * | 2007-11-21 | 2009-05-22 | Centre Nat Rech Scient | Preparing individual carbon nanotube aerogel, useful e.g. to prepare composite materials, comprises reducing carbon nanotubes, exposing polyelectrolyte salt to polar solvent, freezing solution of nanotubes and sublimation of solvent |
| CN102674506A (en) * | 2012-05-10 | 2012-09-19 | 刘娟 | Metal carbon tube component for purifying wastewater and electrocatalytic oxidation device |
| CN103819024A (en) * | 2014-03-05 | 2014-05-28 | 中钢集团鞍山热能研究院有限公司 | Pretreatment method for fluorenone production wastewater |
| CN105060598A (en) * | 2015-08-04 | 2015-11-18 | 重庆杰润科技有限公司 | Chemical pharmacy wastewater pretreatment system |
| CN106167332A (en) * | 2016-07-11 | 2016-11-30 | 浙江迪邦化工有限公司 | A kind of aniline intermediate produces the recycling processing method of waste water |
| CN111377569A (en) * | 2020-04-26 | 2020-07-07 | 安徽皖欣环境工程有限公司 | 3, 4-dichloroaniline wastewater treatment system |
-
2020
- 2020-08-25 CN CN202010864718.0A patent/CN112093946B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2923823A1 (en) * | 2007-11-21 | 2009-05-22 | Centre Nat Rech Scient | Preparing individual carbon nanotube aerogel, useful e.g. to prepare composite materials, comprises reducing carbon nanotubes, exposing polyelectrolyte salt to polar solvent, freezing solution of nanotubes and sublimation of solvent |
| CN102674506A (en) * | 2012-05-10 | 2012-09-19 | 刘娟 | Metal carbon tube component for purifying wastewater and electrocatalytic oxidation device |
| CN103819024A (en) * | 2014-03-05 | 2014-05-28 | 中钢集团鞍山热能研究院有限公司 | Pretreatment method for fluorenone production wastewater |
| CN105060598A (en) * | 2015-08-04 | 2015-11-18 | 重庆杰润科技有限公司 | Chemical pharmacy wastewater pretreatment system |
| CN106167332A (en) * | 2016-07-11 | 2016-11-30 | 浙江迪邦化工有限公司 | A kind of aniline intermediate produces the recycling processing method of waste water |
| CN111377569A (en) * | 2020-04-26 | 2020-07-07 | 安徽皖欣环境工程有限公司 | 3, 4-dichloroaniline wastewater treatment system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112093946A (en) | 2020-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107459200B (en) | High-salt-content wastewater salinity resource recovery process | |
| CN104261526B (en) | The processing method of heavy metal wastewater thereby | |
| CN1289413C (en) | Technique for processing reclamation of industrial wastewater from printing electronic circuit board | |
| CN101269871B (en) | Method for processing chrome wastewater | |
| CN101648759B (en) | Recycling processing method for wastewater produced by processing stainless steel | |
| CN112374705B (en) | High-salinity wastewater treatment process for iron and steel enterprises | |
| CN113231446B (en) | Treatment and disposal system for incineration fly ash of household garbage | |
| CN103553249B (en) | In electroplating effluent, acid is separated and heavy metal collection method | |
| CN102190345A (en) | Method for enriching low-concentration heavy metal in water by recyclable magnesium hydroxide adsorbent | |
| CN103771630A (en) | Process for treating and recycling mine acid heavy metal wastewater | |
| CN101696071A (en) | Zero-discharge treatment process for industrial wastewater of iron and steel plant | |
| CN112479467A (en) | Graphite wastewater treatment device and use method thereof | |
| CN103964619A (en) | Advanced treatment and reuse method of pre-coated membrane of tail water of sewage plant | |
| CN105859000B (en) | A kind of gold smelting waste water treatment process | |
| CN105541016A (en) | Inorganic-ammonium-salt-containing wastewater treatment system and recycling method thereof | |
| CN210528679U (en) | Mine water resourceful treatment recycling system | |
| CN112624446A (en) | Organic wastewater zero-discharge treatment process | |
| CN104150570B (en) | A kind of method extracting chromium from chrome waste liquid | |
| CN103496809A (en) | Electroplating wastewater electrochemical treatment and recycling comprehensive method | |
| CN104005050B (en) | In Electrolytic Manganese Wastewater, bivalent manganese is processed reuse method | |
| CN202865053U (en) | Processing device for wastewater form circulating cooling water and reverse osmosis concentrated water | |
| CN105461118A (en) | Coal mine sewage treating and recycling technology | |
| CN112093946B (en) | Electrochemical enhanced pretreatment method for fluorenone wastewater | |
| CN112028273A (en) | High-recovery-rate reclaimed water recycling advanced treatment system and treatment method | |
| CN214141986U (en) | Processing system for reducing and solidifying resource recycling of electrolytic aluminum slag leachate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |