CN110237665B - Electrocatalytic oxidation VOC treatment device - Google Patents
Electrocatalytic oxidation VOC treatment device Download PDFInfo
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- CN110237665B CN110237665B CN201910672260.6A CN201910672260A CN110237665B CN 110237665 B CN110237665 B CN 110237665B CN 201910672260 A CN201910672260 A CN 201910672260A CN 110237665 B CN110237665 B CN 110237665B
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- tank
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- sedimentation
- spray
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- 230000003647 oxidation Effects 0.000 title claims abstract description 26
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 26
- 239000007921 spray Substances 0.000 claims abstract description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 238000004062 sedimentation Methods 0.000 claims abstract description 37
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 27
- 238000005507 spraying Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000012856 packing Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 35
- 239000002893 slag Substances 0.000 claims description 7
- 239000006228 supernatant Substances 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 239000013043 chemical agent Substances 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
-
- 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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- 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
- B01D53/96—Regeneration, reactivation or recycling of reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- 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 electrocatalytic oxidation VOC treatment device, which comprises a spraying mechanism, a pretreatment mechanism and an electrolysis mechanism; the spraying mechanism comprises a tower body, an air inlet and a plurality of spraying units, wherein each spraying unit comprises a packing layer and a plurality of evenly arranged spray heads; the pretreatment mechanism comprises a storage box, a sedimentation box and an overflow box, wherein a sedimentation plate is arranged in the middle of the sedimentation box; the electrolysis mechanism comprises an electrolysis box and a water outlet box, a plurality of electrodes which are uniformly arranged are arranged in the electrolysis box, and the electrodes are electrically connected with a low-voltage power supply arranged at the outer side of the electrolysis box; the bottom of the electrolytic tank is provided with a water inlet which is communicated with the overflow tank through a spray pump, the top of the water outlet tank is provided with a water outlet, and the water outlet is communicated with the spray head. The electrocatalytic oxidation VOC treatment device adopting the structure thoroughly removes the pollution components in the VOC, and the treated gas can reach the emission standard without adding chemical agents and secondary pollution in the treatment process.
Description
Technical Field
The invention relates to the technical field of VOC waste gas purification, in particular to an electrocatalytic oxidation VOC treatment device.
Background
Electrocatalytic oxidation technology, which is one of advanced oxidation technologies, has been widely used in the wastewater treatment industry, but is a blank in VOC treatment technology. The key influencing factors mainly comprise the following three aspects: (1) The electrode material is selected to be as efficient as possible to remove the decomposed organic matters, and to be as inefficient as possible to remove electrolyzed water and generate heat. (2) The reasonable electrolysis system enhances mass transfer speed, improves current efficiency, reduces voltage, and can effectively reduce operation cost due to reasonable electrolysis system design. (3) The reasonable design of the absorption system and the gas distribution system relates to the electrolysis efficiency of the electrolyte to the organic matters, and the reasonable design of the gas distribution system can effectively reduce the short circuit of the waste gas.
Disclosure of Invention
The invention aims to provide an electrocatalytic oxidation VOC treatment device, which thoroughly removes the pollution components in VOC, and the treated gas can reach the emission standard without adding chemical agents and generating secondary pollution in the treatment process.
In order to achieve the above purpose, the invention provides an electrocatalytic oxidation VOC treatment device, which comprises a spraying mechanism, a pretreatment mechanism and an electrolysis mechanism;
the spraying mechanism comprises a tower body, an air inlet and a plurality of spraying units which are uniformly arranged in the tower body from top to bottom, wherein the air inlet is arranged on one side of the tower body, the air inlet is arranged below the spraying unit at the lowest end, the spraying unit comprises a packing layer and a plurality of uniformly arranged spray heads, and the spray heads are arranged above the packing layer;
the pretreatment mechanism comprises a storage box, a sedimentation box and an overflow box, wherein the storage box is arranged at the bottom of the tower body, the bottom of the storage box is communicated with the bottom of the sedimentation box, the top of the sedimentation box is communicated with the top of the overflow box, a sedimentation plate is arranged in the middle of the sedimentation box, and a slag discharge port is formed in the bottom of the sedimentation box;
the electrolysis mechanism comprises an electrolysis tank and a water outlet tank, the electrolysis tank is separated from the water outlet tank by a flower plate, a plurality of uniformly arranged electrodes are arranged in the electrolysis tank, the electrodes are fixedly arranged on the flower plate, and the electrodes are electrically connected with a power supply arranged outside the electrolysis tank;
the bottom of the electrolytic tank is provided with a water inlet which is communicated with the overflow tank through a spray pump, the top of the water outlet tank is provided with a water outlet which is communicated with the spray head through a spray pipeline.
Preferably, the electrode comprises an anode and a cathode, the cathode is wrapped on the outer side of the anode, the anode is electrically connected with the positive electrode of the low-voltage power supply, and the cathode is electrically connected with the negative electrode of the low-voltage power supply.
Preferably, the anode is a tubular electrode, a plurality of holes are formed in the pipe wall of the anode, a first water outlet is formed in one end, close to the water outlet tank, of the anode, the cathode is a barrel-type cathode, and a plurality of round holes are formed in the pipe wall of the cathode.
Preferably, an access hole is formed in the top of the electrolytic tank, a visual window is arranged on the tower body at the spraying unit, and a valve is arranged at the air inlet.
A VOC abatement method for an electrocatalytic oxidation VOC abatement device, comprising the steps of:
A. firstly, after the spraying mechanism, the pretreatment mechanism and the electrolysis mechanism are operated for five minutes, slowly opening a valve at the air inlet;
B. the spray liquid in the water outlet tank enters a spray head through a spray pipeline, the spray liquid sprayed by the spray head sprays and washes polluted gas, the gas-liquid contact time is prolonged by a packing layer, the spray liquid finally falls into a storage tank, the bottom of the storage tank is communicated with the bottom of a sedimentation tank, the spray liquid enters the sedimentation tank and flows from bottom to top, large suspended matters fall on a sedimentation plate, accumulate to a certain thickness and fall into the bottom of the sedimentation tank, the sediment is discharged through a slag discharge port, and supernatant in the spray liquid overflows into an overflow tank;
C. the supernatant is pumped into the electrolytic tank by the overflow tank through the spray pump, enters the inside of the anode through the round hole on the wall of the cathode tube and the hole on the wall of the anode tube, then enters the water outlet tank from the first water outlet of the anode close to one end of the water outlet tank, and clean gas is discharged from the air outlet at the top of the tower body, thus completing the whole cycle.
Therefore, the invention adopts the electrocatalytic oxidation VOC treatment device with the structure to thoroughly remove the pollution components in VOC, the treated gas can reach the emission standard, no chemical agent is added in the treatment process, no secondary pollution is generated, the process principle is that the gas pollutant is transferred into the spray liquid, then the spray liquid is subjected to electrocatalytic oxidation treatment, and the spray liquid carrying oxidized free radicals is sprayed, thereby achieving the purpose of purifying the gas.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an electrocatalytically oxidized VOC abatement device in accordance with the present invention;
fig. 2 is a schematic illustration of an electrode of an embodiment of an electrocatalytic oxidation VOC treatment apparatus of the present invention.
Reference numerals
1. A tower body; 2. an air inlet; 3. a filler layer; 4. a spray head; 5. a storage box; 6. a sedimentation tank; 7. an overflow box; 8. a sedimentation plate; 9. a slag discharge port; 10. an electrolytic tank; 11. discharging the water tank; 12. a flower plate; 13. an electrode; 14. an anode; 15. a cathode; 16. a low voltage power supply; 17. a water inlet; 18. a spray pump; 19. a water outlet; 20. a spray pipe; 21. an access opening; 22. a visual window; 23. and (3) a valve.
Detailed Description
Examples
Fig. 1 is a schematic view of an embodiment of an electrocatalytic oxidation VOC treatment apparatus of the present invention, and fig. 2 is a schematic view of electrodes of an embodiment of an electrocatalytic oxidation VOC treatment apparatus of the present invention. As shown in the figure, the invention provides an electrocatalytic oxidation VOC treatment device which comprises a spraying mechanism, a pretreatment mechanism and an electrolysis mechanism; the spraying mechanism comprises a tower body 1, an air inlet 2 and a plurality of spraying units which are uniformly arranged in the tower body 1 from top to bottom, wherein a visible window 22 is arranged on the tower body 1 at the spraying unit for observing the spraying condition in the tower body 1, the air inlet 2 is arranged on one side of the tower body 1, the air inlet 2 is arranged below the spraying unit at the lowest end, a valve 23 is arranged at the air inlet 2, the spraying unit comprises a packing layer 3 and a plurality of spray heads 4 which are uniformly arranged, and the spray heads 4 are arranged above the packing layer 3; the pretreatment mechanism comprises a storage tank 5, a sedimentation tank 6 and an overflow tank 7, wherein the storage tank 5 is arranged at the bottom of the tower body 1, the storage tank 5 is used for storing spray liquid, the bottom of the storage tank 5 is communicated with the bottom of the sedimentation tank 6, the top of the sedimentation tank 6 is communicated with the top of the overflow tank 7, a sedimentation plate 8 is arranged in the middle of the sedimentation tank 6, and a slag discharge port 9 is formed in the bottom of the sedimentation tank 6.
The electrolytic mechanism comprises an electrolytic tank 10 and a water outlet tank 11, the electrolytic tank 10 is separated from the water outlet tank 11 through a flower plate 12, the electrolytic tank 10 and the water outlet tank 11 are prevented from being in short circuit by spraying liquid, a plurality of uniformly arranged electrodes 13 are arranged in the electrolytic tank 10, the electrodes 13 are fixedly arranged on the flower plate 12, the electrodes 12 are electrically connected with a low-voltage power supply 16 arranged on the outer side of the electrolytic tank 10, the electrodes 13 comprise an anode 14 and a cathode 15, the cathode 15 is wrapped on the outer side of the anode 14, a gap is reserved between the anode 14 and the cathode 15, the gap is 5mm, the anode 14 is electrically connected with the positive electrode of the low-voltage power supply 16, the cathode 15 is electrically connected with the negative electrode of the low-voltage power supply 16, the anode 14 is a tubular electrode, a plurality of pores are arranged on the pipe wall of the anode 14, the pore diameter is 5-10 mu m, one end of the anode 14, which is close to the water outlet tank 11, is provided with a water outlet I, one end of the anode 14, which is far away from the water outlet tank 11, is sealed to prevent spray liquid from flowing to the outside, the cathode 15 is a barrel-type cathode, a plurality of round holes are formed in the pipe wall of the cathode 15, the diameter of each round hole is 1.5-2.5mm, the round holes are regularly arranged, the center distance between every two adjacent round holes is 6mm, an overhaul port 21 is formed in the top of the electrolytic tank 10, the electrolytic tank 10 is convenient to check and maintain, a water inlet 17 is formed in the bottom of the electrolytic tank 10, the water inlet 17 is communicated with the overflow tank 7 through a spray pump 18, a water outlet 19 is formed in the top of the water outlet tank 11, and the water outlet 19 is communicated with the spray head 4 through a spray pipe 20.
A VOC abatement method for an electrocatalytic oxidation VOC abatement device, comprising the steps of:
A. after the spraying mechanism, the pretreatment mechanism and the electrolysis mechanism are operated for five minutes, the valve 23 at the air inlet 2 is slowly opened;
B. the spray liquid in the water outlet tank 11 enters the spray head 4 through the spray pipeline 20, the spray liquid sprayed by the spray head 4 sprays and washes the polluted gas, the gas-liquid contact time of the packing layer 3 is prolonged, the spray liquid finally falls into the storage tank 5, the bottom of the storage tank 5 is communicated with the bottom of the sedimentation tank 6, the spray liquid enters the sedimentation tank 6 and flows from bottom to top, large suspended matters fall on the sedimentation plate 8, the accumulated thickness falls into the bottom of the sedimentation tank 6, the discharged slurry is discharged through the slag discharge port 9, and the supernatant in the spray liquid overflows into the overflow tank 7;
C. the supernatant fluid is pumped into the electrolytic tank 10 from the overflow tank 7 through the spray pump 18, enters the inside of the anode 14 through the round hole on the wall of the cathode 15 and the hole on the wall of the anode 14, enters the water outlet tank 11 from the water outlet port of the anode 14 near one end of the water outlet tank 11, and clean gas is discharged from the air outlet at the top of the tower body 1, thus completing the whole cycle.
In order to ensure the safety of the whole device, a low-voltage power supply 16 electrically connected with the electrode 13 adopts a low-voltage design, the highest voltage is not more than 12V, and the current is not more than 1000A at maximum; in order to effectively treat the waste gas by the electrocatalytic oxidation technology, the invention brings the pollution components in the pollution gas into spray liquid through the spray action, and the electrolysis is carried out in an electrolysis box 10 through an electrode 13, and then the electrolyzed spray liquid is provided with oxidation free radicals to directly spray the waste gas; in order to improve the electrolysis efficiency, the pretreatment mechanism is arranged, and large particle dust in the spray liquid is subjected to sedimentation treatment through the sedimentation plate 8, so that the running load of the electrode 13 is reduced, and the purpose of saving electricity is achieved; in order to improve the content of oxidation free radicals in the spray liquid, the invention is provided with a tubular electrode and a pattern plate 12 structure, so that all the spray liquid is ensured to pass through the catalytic oxidation of the electrode 13 in the circulation process, and the short circuit phenomenon of the spray liquid is prevented; in order to ensure the normal operation of the electrode 13 and reduce the pollution and blockage of the electrode 13, the water inlet mode of the electrode 13 adopts external pressure water inlet, and a manhole is arranged above the electrolytic tank 10.
Therefore, the invention adopts the electrocatalytic oxidation VOC treatment device with the structure to thoroughly remove the pollution components in VOC, the treated gas can reach the emission standard, no chemical agent is added in the treatment process, no secondary pollution is generated, the process principle is that the gas pollutant is transferred into the spray liquid, then the spray liquid is subjected to electrocatalytic oxidation treatment, and the spray liquid carrying oxidized free radicals is sprayed, thereby achieving the purpose of purifying the gas.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the invention can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the invention.
Claims (2)
1. The VOC treatment method by electrocatalytic oxidation is characterized by being realized by a VOC treatment device, wherein the VOC treatment device comprises a spraying mechanism, a pretreatment mechanism and an electrolysis mechanism;
the spraying mechanism comprises a tower body, an air inlet and a plurality of spraying units which are uniformly arranged in the tower body from top to bottom, wherein the air inlet is arranged on one side of the tower body, the air inlet is arranged below the spraying unit at the lowest end, the spraying unit comprises a packing layer and a plurality of uniformly arranged spray heads, and the spray heads are arranged above the packing layer;
the pretreatment mechanism comprises a storage box, a sedimentation box and an overflow box, wherein the storage box is arranged at the bottom of the tower body, the bottom of the storage box is communicated with the bottom of the sedimentation box, the top of the sedimentation box is communicated with the top of the overflow box, a sedimentation plate is arranged in the middle of the sedimentation box, and a slag discharge port is formed in the bottom of the sedimentation box;
the electrolysis mechanism comprises an electrolysis tank and a water outlet tank, the electrolysis tank is separated from the water outlet tank by a flower plate, a plurality of uniformly arranged electrodes are arranged in the electrolysis tank, the electrodes are fixedly arranged on the flower plate, and the electrodes are electrically connected with a power supply arranged outside the electrolysis tank;
the bottom of the electrolytic tank is provided with a water inlet which is communicated with the overflow tank through a spray pump, the top of the water outlet tank is provided with a water outlet which is communicated with the spray head through a spray pipeline;
the VOC treatment method by electrocatalytic oxidation comprises the following steps:
A. firstly, after the spraying mechanism, the pretreatment mechanism and the electrolysis mechanism are operated for five minutes, slowly opening a valve at the air inlet;
B. the spray liquid in the water outlet tank enters the spray head through the spray pipeline, the spray liquid sprayed by the spray head sprays and washes the polluted gas, the gas-liquid contact time is prolonged by the packing layer, the spray liquid finally falls into the storage tank, the bottom of the storage tank is communicated with the bottom of the sedimentation tank, the spray liquid enters the sedimentation tank, flows from bottom to top, and large suspended matters fall on the sedimentation plate and accumulate to a certain degree
The thickness of the liquid falls into the bottom of the sedimentation tank, the liquid is discharged through a slag discharge port, and the supernatant in the spray liquid overflows into an overflow tank;
C. the supernatant fluid is pumped into the electrolytic tank through the overflow tank by the spray pump, enters the inside of the anode through the round hole on the wall of the cathode and the pore on the wall of the anode, enters the water outlet tank through the first water outlet of the anode close to one end of the water outlet tank, and clean gas is discharged through the air outlet at the top of the tower body, thus completing the whole cycle;
the electrode comprises an anode and a cathode, the cathode is wrapped on the outer side of the anode, the anode is electrically connected with the positive electrode of the low-voltage power supply, and the cathode is electrically connected with the negative electrode of the low-voltage power supply;
the anode is a tubular electrode, a plurality of holes are formed in the pipe wall of the anode, a first water outlet is formed in one end, close to the water outlet tank, of the anode, the cathode is a barrel-type cathode, and a plurality of round holes are formed in the pipe wall of the cathode.
2. The method for treating the VOC by electrocatalytic oxidation according to claim 1, wherein: the top of the electrolytic tank is provided with an access hole, the tower body at the spraying unit is provided with a visual window, and the air inlet is provided with a valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910672260.6A CN110237665B (en) | 2019-07-24 | 2019-07-24 | Electrocatalytic oxidation VOC treatment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910672260.6A CN110237665B (en) | 2019-07-24 | 2019-07-24 | Electrocatalytic oxidation VOC treatment device |
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| Publication Number | Publication Date |
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| CN110237665A CN110237665A (en) | 2019-09-17 |
| CN110237665B true CN110237665B (en) | 2023-12-19 |
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| CN201910672260.6A Active CN110237665B (en) | 2019-07-24 | 2019-07-24 | Electrocatalytic oxidation VOC treatment device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111185089B (en) * | 2020-01-09 | 2021-09-28 | 青岛理工大学 | Novel technology for performing electro-Fenton catalytic degradation on VOCs |
| CN113144885A (en) * | 2020-01-23 | 2021-07-23 | 江门市绿一茵环保科技有限公司 | Method for treating low-concentration VOCs (volatile organic compounds) by electrocatalytic oxidation and deodorizing |
| CN115448524A (en) * | 2022-08-30 | 2022-12-09 | 绿源环保工程设备(广州)有限公司 | Electro-catalysis malodorous gas treatment device and method based on BDD anode |
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| WO2014098120A1 (en) * | 2012-12-19 | 2014-06-26 | 富士電機株式会社 | Exhaust gas purifying apparatus |
| CN207153469U (en) * | 2017-08-01 | 2018-03-30 | 广州市振达环保有限公司 | A kind of new electrolysis spray treatment device |
| CN210332217U (en) * | 2019-07-24 | 2020-04-17 | 河北瑛泽环保科技有限公司 | Electrocatalytic oxidation VOC administers device |
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2019
- 2019-07-24 CN CN201910672260.6A patent/CN110237665B/en active Active
Patent Citations (6)
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|---|---|---|---|---|
| CN2845893Y (en) * | 2005-09-07 | 2006-12-13 | 胡雪江 | Dust removing waste gas purifying spray tower |
| CN101535729A (en) * | 2006-11-01 | 2009-09-16 | 三泽住宅株式会社 | Air purifier |
| CN102872702A (en) * | 2012-10-03 | 2013-01-16 | 黄立维 | Method for purifying harmful waste gas by combination of absorption and microelectrolysis and special device thereof |
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