CN117065518A - Organic waste gas concentration mineralization system - Google Patents
Organic waste gas concentration mineralization system Download PDFInfo
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- CN117065518A CN117065518A CN202311081023.5A CN202311081023A CN117065518A CN 117065518 A CN117065518 A CN 117065518A CN 202311081023 A CN202311081023 A CN 202311081023A CN 117065518 A CN117065518 A CN 117065518A
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- waste gas
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- organic waste
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- 239000007789 gas Substances 0.000 title claims abstract description 46
- 239000010815 organic waste Substances 0.000 title claims abstract description 39
- 230000033558 biomineral tissue development Effects 0.000 title claims abstract description 17
- 239000002912 waste gas Substances 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 22
- 238000010521 absorption reaction Methods 0.000 claims abstract description 19
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 8
- 230000003647 oxidation Effects 0.000 claims abstract description 7
- 238000000855 fermentation Methods 0.000 claims abstract description 4
- 238000004062 sedimentation Methods 0.000 claims abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 26
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 19
- 239000000460 chlorine Substances 0.000 claims description 19
- 229910052801 chlorine Inorganic materials 0.000 claims description 19
- 239000000945 filler Substances 0.000 claims description 18
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 16
- 229910052799 carbon Inorganic materials 0.000 claims description 14
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 12
- 239000006260 foam Substances 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 230000001089 mineralizing effect Effects 0.000 claims description 12
- 229910052709 silver Inorganic materials 0.000 claims description 12
- 239000004332 silver Substances 0.000 claims description 12
- 239000010802 sludge Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910000640 Fe alloy Inorganic materials 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 238000005273 aeration Methods 0.000 claims description 6
- 229910001316 Ag alloy Inorganic materials 0.000 claims description 4
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 4
- 229910001021 Ferroalloy Inorganic materials 0.000 claims description 4
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 239000004480 active ingredient Substances 0.000 claims description 3
- 239000013505 freshwater Substances 0.000 claims description 3
- 239000007791 liquid phase Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000012856 packing Methods 0.000 abstract description 9
- 231100000419 toxicity Toxicity 0.000 abstract description 3
- 230000001988 toxicity Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 13
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 9
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 6
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- OWXJKYNZGFSVRC-NSCUHMNNSA-N (e)-1-chloroprop-1-ene Chemical compound C\C=C\Cl OWXJKYNZGFSVRC-NSCUHMNNSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000006298 dechlorination reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 231100000171 higher toxicity Toxicity 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229940050176 methyl chloride Drugs 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1487—Removing organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
- B01D53/326—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00 in electrochemical cells
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological processes
- B01D53/85—Biological processes with gas-solid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/206—Organic halogen compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention discloses an organic waste gas concentration mineralization system, which comprises a waste gas mineralization tower, an ultrafiltration device, a Fenton oxidation tank, a sedimentation tank, an anaerobic fermentation tank and an aerobic tank which are sequentially arranged, wherein the waste gas mineralization tower is sequentially provided with a conical discharge tank, an absorption tank, an iron carbon packing layer, a porous negative plate, a conical anode, a biological packing layer and an exhaust end from bottom to top, the conical bottom of the conical discharge tank is provided with a water outlet pipe, the water outlet pipe is connected with the ultrafiltration device, the absorption tank is provided with a water inlet pipe and an air inlet pipe, a buffer zone is arranged between the absorption tank and the iron carbon packing layer, and the porous negative plate is electrically connected with the conical anode; the conical bottom of the conical electrode is provided with a mud discharge pipe, and the conical electrode is provided with a water dripping hole; the waste gas treated by the iron carbon packing layer is further reduced and dechlorinated by chlorinated organic matters under the action of the negative plate, so that the chlorinated organic matters can be reduced to a great extent, and the toxicity of the organic waste gas is reduced.
Description
Technical Field
The invention relates to an exhaust gas treatment system, in particular to an organic exhaust gas concentration mineralization system.
Background
The chlorine-containing organic waste gas is a waste gas difficult to treat, has stronger toxicity, the current common treatment methods comprise methods of direct combustion, photocatalysis, biodegradation and the like, the incineration method is mostly used for treating waste gas with high concentration, corrosive gas can be generated in the combustion process, organic waste gas with higher concentration can be generated under the condition of incomplete combustion, the condensation method can treat the high-concentration chlorine-containing organic waste gas and can effectively recycle raw materials, but the method is not thorough for treating the low-boiling-point chlorine-containing organic waste gas, and cannot meet the requirement of emission standard. The biological filtration technology is that after the waste gas is sent to a filtration facility containing various microorganisms, organic and inorganic parts contained in the waste gas are degraded and converted into non-toxic and pollution-free gas. The technology mainly depends on different kinds of microorganisms to purify different components in waste gas, and has good cleaning effect, but the early investment is higher.
CN112933865a discloses a method for treating chlorine-containing organic waste gas in the production process of chloropropene, the waste gas is dehydrated and dried, then the dried chlorine-containing organic waste gas is subjected to cryogenic treatment, condensed liquid is recovered by a condensed liquid conveying pump, tail gas is adsorbed by activated carbon and then discharged after reaching standards, however, although the method recycles the chlorine-containing organic waste gas, the method does not degrade the pollution components of the waste gas in the recycling process; CN108339388A discloses a technology for purifying and treating high-concentration chlorine-containing organic waste gas, which filters waste gas, oxidizes at high temperature, absorbs alkali liquor, etc., however, dioxin substances are inevitably formed in the high-temperature treatment process, and the dioxin substances are difficult to treat and have higher toxicity; CN113266837a discloses a method for treating chlorine-containing organic waste gas, which uses catalytic combustion and thermal combustion to purify the waste gas after combustion, and the method still has the problem of producing dioxin with greater toxicity.
Therefore, how to treat the chlorine-containing organic matters in the organic waste gas, and discharge the concentrated mineralized organic matters into the current problem which needs to be solved urgently.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims to provide an organic waste gas concentration mineralization system which utilizes iron-carbon micro-electrolysis, electro-catalysis and bio-trickling filtration to efficiently treat chlorine-containing organic waste gas.
To achieve the above object, an embodiment of the present invention provides an organic waste gas concentrating and mineralizing system, including: the waste gas mineralization tower 1, the ultrafiltration device 2, the Fenton oxidation tank 3, the sedimentation tank 4, the anaerobic fermentation tank 5 and the aerobic tank 6 are sequentially arranged, wherein the waste gas mineralization tower 1 is sequentially provided with a conical discharge tank 14, an absorption tank 13, an iron carbon filler layer 15, a porous negative plate 17, a conical anode 18, a biological filler layer 110 and an exhaust end 113 from bottom to top, the conical bottom of the conical discharge tank 14 is provided with a water outlet pipe, the water outlet pipe is connected with the ultrafiltration device 2, the absorption tank 13 is provided with a water inlet pipe 11 and an air inlet pipe 12, a buffer zone is arranged between the absorption tank 13 and the iron carbon filler layer 15, and the porous negative plate 17 is electrically connected with the conical anode 18; the conical bottom of the conical electrode 18 is provided with a mud discharge pipe 19, and the conical electrode 18 is provided with a water dripping hole;
iron alloy and active carbon are arranged in the iron carbon packing layer 15, and the mass ratio of the iron alloy to the active carbon is 55:45; lead and silver are arranged in the ferroalloy, and the mass percentages of the lead and the silver are respectively 1.2% and 0.5%;
the conical anode 18 is an iron electrode, the porous negative plate 17 takes porous carbon as a substrate, foam metal is taken as an active component, the foam metal is copper, nickel and silver alloy foam metal, and the mass ratio of the copper, the nickel and the silver is 25:10:1;
in one or more embodiments of the present invention, a surplus sludge pipe 112 is provided between the exhaust end 113 and the bio-filler layer 110;
in one or more embodiments of the present invention, the fresh water outlet of the ultrafiltration device 2 is connected to an ultrafiltration return pipe 111, the ultrafiltration return pipe 111 being connected to the excess sludge pipe 112;
in one or more embodiments of the present invention, a DC power source is provided between the porous negative plate 17 and the tapered anode 18 to adjust the current density to 10-20mA/cm 2 ；
In one or more embodiments of the present invention, the concentrated water outlet of the ultrafiltration device 2 is connected to the Fenton oxidation tank;
in one or more embodiments of the invention, the organic waste gas is a chlorine-containing organic waste gas;
in one or more embodiments of the present invention, the porous negative electrode plate 17 is provided with an activated carbon layer on both upper and lower sides thereof;
in one or more embodiments of the present invention, the activated carbon layer is provided with a thickness of 10-20cm;
in one or more embodiments of the invention, the air inlet pipe 12 is connected to an aeration device arranged in the absorption tank 13, the aeration device being located below the level of the liquid phase in the absorption tank;
compared with the prior art, the embodiment of the invention has the following advantages:
(1) Delivering the wastewater containing the sludge to an absorption tank, wherein the wastewater is contacted with the waste gas when the waste gas enters through an air inlet pipe, so that part of pollutants are adsorbed, and part of water vapor is brought to an iron carbon packing layer for treatment;
(2) The iron-carbon packing layer is provided with iron alloy and active carbon, and the mass ratio of the iron alloy to the active carbon is 40-70:30-50; lead and silver are arranged in the ferroalloy, the mass percentages of the lead and the silver are respectively 1-2% and 0.3-0.5, and the filler can carry out reduction dechlorination reaction on chlorine-containing organic matters to reduce all or part of chlorine in the organic matters into hydrogen functional groups;
(3) The waste gas treated by the iron carbon packing layer is further increased to a porous negative plate, chlorinated organic matters are further reduced and dechlorinated under the action of the negative plate, the conical anode 18 is an iron electrode, the porous negative plate 17 takes porous carbon as a substrate, foam metal is an active ingredient, the foam metal is copper, nickel and silver alloy foam metal, the mass ratio of the copper, nickel and silver is 25:10:1, and the negative electrode can reduce the chlorinated organic matters to a great extent;
(4) The waste gas treated by the porous negative plate further rises to a conical anode, the conical anode is a porous plate, sludge and water in the biological filler layer fall into the conical anode and undergo oxidation reaction in the conical anode, and organic matters are further mineralized into easily degradable organic matters;
(5) A biological filler layer is arranged above the conical anode, a biological film is arranged in the filler layer, waste gas is discharged through an exhaust end after being treated by the biological film, and the biological film can further adsorb the waste gas to degrade and mineralize organic waste gas;
(6) The waste gas treatment is not carried out by adopting an incineration process, but the pollutants are treated in the water phase after the chlorine-containing organic matters which are difficult to degrade in the waste gas are reduced by utilizing the waste gas mineralization tower, so that toxic substances such as dioxin and the like are effectively produced, equipment improvement can be carried out on the basis of the original water treatment equipment, and the engineering cost is greatly reduced.
Drawings
FIG. 1 is a schematic diagram of an organic waste gas concentrating and mineralizing system according to one embodiment of the invention;
FIG. 2 is a graph showing the effect of removing the organic chlorine components according to an embodiment of the present invention;
FIG. 3 is a graph showing the effect of removing the organic chlorine components according to an embodiment of the present invention;
Detailed Description
The following detailed description of embodiments of the invention is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.
Example 1
As shown in fig. 1, an organic waste gas concentrating and mineralizing system according to a preferred embodiment of the present invention includes:
an organic waste gas concentrating mineralization system, comprising: the waste gas mineralization tower 1, the ultrafiltration device 2, the Fenton oxidation tank 3, the sedimentation tank 4, the anaerobic fermentation tank 5 and the aerobic tank 6 which are sequentially arranged, wherein the waste gas mineralization tower 1 is sequentially provided with a conical discharge tank 14, an absorption tank 13, an iron carbon filler layer 15, a porous negative plate 17, a conical anode 18, a biological filler layer 110 and an exhaust end 113 from bottom to top, the conical bottom of the conical discharge tank 14 is provided with a water outlet pipe, the water outlet pipe is connected with the ultrafiltration device 2, the absorption tank 13 is provided with a water inlet pipe 11 and an air inlet pipe 12, and the absorption tank 13 is in communication with the iron carbon fillerA buffer zone is arranged between the layers 15, and the porous negative plate 17 is electrically connected with the conical anode 18; the conical bottom of the conical electrode 18 is provided with a mud discharge pipe 19, and the conical electrode 18 is provided with a water dripping hole; iron alloy and active carbon are arranged in the iron carbon packing layer 15, and the mass ratio of the iron alloy to the active carbon is 55:45; lead and silver are arranged in the ferroalloy, and the mass percentages of the lead and the silver are respectively 1.2% and 0.5%; the conical anode 18 is an iron electrode, the porous negative plate 17 takes porous carbon as a substrate, foam metal is an active ingredient, the foam metal is copper, nickel and silver alloy foam metal, the mass ratio of copper, nickel and silver is 25:10:1, a surplus sludge pipe 112 is arranged between an exhaust end 113 and the biological filler layer 110, a fresh water outlet of the ultrafiltration device 2 is connected with an ultrafiltration return pipe 111, the ultrafiltration return pipe 111 is connected with the surplus sludge pipe 112, a direct current power supply is arranged between the porous negative plate 17 and the conical anode 18, and the current density is adjusted to be 10-15mA/cm 2 The concentrated water outlet of the ultrafiltration device 2 is connected with the Fenton oxidation pond, and the organic waste gas is chlorine-containing organic waste gas; wherein, the delivery amounts of the ultrafiltration reflux pipe 111 and the excess sludge pipe 112 are sufficient to ensure that the space between the conical anode 18 and the porous negative plate 17 is filled with water and an air cavity is formed in the cavity; the air inlet pipe 12 is connected with an aeration device arranged in the absorption tank 13, and the aeration device is positioned below the liquid level of the liquid phase in the absorption tank;
chlorine-containing organic waste gas discharged from a chemical plant: methyl chloride 245ppm, methylene chloride 890ppm, chlorobenzene 1900ppm; flow rate of organic waste gas q=4000 m 3 Delivering the mixture to an exhaust gas mineralizing tower at a speed of/h, and adjusting and regulating the current density to be 5, 10, 15, 20 and 25mA/cm 2 The removal rate of the exhaust gas chloromethane, dichloromethane and chlorobenzene in the exhaust end was detected, see fig. 2.
Example 2
On the basis of example 1, activated carbon layers were provided on both the upper side and the lower side of the porous negative plate 17, and the activated carbon layer was set to 20cm thick. And the removal rate of the waste gas chloromethane, dichloromethane and chlorobenzene in the exhaust end was detected, see fig. 3.
Comparative example 1
Replacing the iron carbon filler layer with an active carbon adsorption layer, and reducing the removal rate of each chlorinated organic matter by more than 20%; the iron carbon filler layer is replaced by a common micro-electrolysis layer, so that the removal rate of chlorinated organic matters is reduced by more than 15%.
The foregoing descriptions of specific exemplary embodiments of the present invention are presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application to thereby enable one skilled in the art to make and utilize the invention in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (10)
1. The organic waste gas concentration mineralization system is characterized by comprising a waste gas mineralization tower (1), an ultrafiltration device (2), a Fenton oxidation tank (3), a sedimentation tank (4), an anaerobic fermentation tank (5) and an aerobic tank (6) which are sequentially arranged, wherein the waste gas mineralization tower (1) is sequentially provided with a conical discharge tank (14), an absorption tank (13), an iron carbon filler layer (15), a porous negative plate (17), a conical anode (18), a biological filler layer (110) and an exhaust end (113), the conical bottom of the conical discharge tank (14) is provided with a water outlet pipe, the water outlet pipe is connected with the ultrafiltration device (2), the absorption tank (13) is provided with a water inlet pipe (11) and an air inlet pipe (12), a buffer area is arranged between the absorption tank (13) and the iron carbon filler layer (15), and the porous negative plate (17) is electrically connected with the conical anode (18); the conical bottom of the conical electrode (18) is provided with a mud discharge pipe (19), and the conical electrode (18) is provided with a water dripping hole;
an iron alloy and active carbon are arranged in the iron carbon filler layer (15), and the mass ratio of the iron alloy to the active carbon is 55:45; lead and silver are arranged in the ferroalloy, and the mass percentages of the lead and the silver are respectively 1.2% and 0.5%;
the conical anode (18) is an iron electrode, the porous negative plate (17) takes porous carbon as a substrate, foam metal is an active ingredient, the foam metal is copper, nickel and silver alloy foam metal, and the mass ratio of copper, nickel and silver is 25:10:1.
2. An organic waste gas concentrating and mineralizing system according to claim 1, characterized in that a surplus sludge pipe (112) is arranged between the exhaust end (113) and the bio-filler layer (110).
3. An organic waste gas concentrating and mineralizing system according to claim 2, characterized in that the fresh water outlet of the ultrafiltration device (2) is connected to an ultrafiltration return pipe (111), the ultrafiltration return pipe (111) being connected to the excess sludge pipe (112).
4. An organic waste gas concentrating and mineralizing system according to claim 1, characterized in that a direct current power supply is arranged between a porous negative plate (17) and the conical anode (18), and the current density is regulated to be 10-20mA/cm 2 。
5. An organic waste gas concentrating and mineralizing system according to claim 1, characterized in that the concentrated water outlet of the ultrafiltration device (2) is connected with the Fenton oxidation tank (3).
6. An organic waste gas concentrating and mineralizing system as claimed in claim 1, wherein the organic waste gas is chlorine-containing organic waste gas.
7. An organic waste gas concentrating and mineralizing system according to claim 1, characterized in that the upper side and the lower side of the porous negative plate (17) are provided with active carbon layers.
8. An organic waste gas concentrating and mineralizing system according to claim 7, wherein the thickness of the activated carbon layer is 10-20cm.
9. An organic waste gas concentrating and mineralizing system according to claim 1, characterized in that the air inlet pipe (12) is connected to an aeration device arranged in an absorption tank (13), which aeration device is located below the liquid level of the liquid phase in the absorption tank.
10. A concentrated mineralization system for organic waste gas according to claim 3, characterized in that the ultrafiltration return pipe (111) and the excess sludge pipe (112) are fed in such an amount as to ensure that the space between the conical anode (18) and the porous negative plate (17) is filled with water and that an air cavity is formed in the cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202311081023.5A CN117065518A (en) | 2023-08-25 | 2023-08-25 | Organic waste gas concentration mineralization system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311081023.5A CN117065518A (en) | 2023-08-25 | 2023-08-25 | Organic waste gas concentration mineralization system |
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| CN117065518A true CN117065518A (en) | 2023-11-17 |
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| CN202311081023.5A Pending CN117065518A (en) | 2023-08-25 | 2023-08-25 | Organic waste gas concentration mineralization system |
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|---|---|---|---|---|
| GB1392720A (en) * | 1970-11-06 | 1975-04-30 | Mead Corp | Performing reduction oxidation reactions and apparatus therefor |
| WO2008038853A1 (en) * | 2006-09-29 | 2008-04-03 | Dae Won Pak | Activated carbon - granule electrode filter |
| US20170062143A1 (en) * | 2015-08-24 | 2017-03-02 | Aruna Zhamu | Production process for a supercapacitor having a high volumetric energy density |
| JP2017204345A (en) * | 2016-05-10 | 2017-11-16 | 後藤 剛 | Iron-charcoal bonded sludge battery and method of generating power using iron-charcoal bonded sludge battery |
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| CN115872564A (en) * | 2022-12-22 | 2023-03-31 | 安徽禹信环境工程科技有限公司 | Method for treating mixed wastewater of multiple pesticides |
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