CN211688451U - Multi-compartment biological purification organic waste gas device - Google Patents
Multi-compartment biological purification organic waste gas device Download PDFInfo
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- CN211688451U CN211688451U CN202020049740.5U CN202020049740U CN211688451U CN 211688451 U CN211688451 U CN 211688451U CN 202020049740 U CN202020049740 U CN 202020049740U CN 211688451 U CN211688451 U CN 211688451U
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- filler
- cavity
- partition plate
- waste gas
- baffle
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- 239000007789 gas Substances 0.000 title claims abstract description 27
- 238000000746 purification Methods 0.000 title claims abstract description 26
- 239000010815 organic waste Substances 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000002912 waste gas Substances 0.000 claims abstract description 26
- 239000007921 spray Substances 0.000 claims abstract description 15
- 230000000813 microbial effect Effects 0.000 claims abstract description 12
- 239000000945 filler Substances 0.000 claims description 85
- 238000005192 partition Methods 0.000 claims description 45
- 238000005507 spraying Methods 0.000 claims description 18
- 229920001577 copolymer Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 18
- 239000003344 environmental pollutant Substances 0.000 abstract description 13
- 231100000719 pollutant Toxicity 0.000 abstract description 13
- 239000000126 substance Substances 0.000 abstract description 13
- 230000015556 catabolic process Effects 0.000 abstract description 11
- 238000006731 degradation reaction Methods 0.000 abstract description 11
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 abstract description 10
- WQOXQRCZOLPYPM-UHFFFAOYSA-N dimethyl disulfide Chemical compound CSSC WQOXQRCZOLPYPM-UHFFFAOYSA-N 0.000 abstract description 10
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 abstract description 10
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 abstract description 9
- 229910000037 hydrogen sulfide Inorganic materials 0.000 abstract description 9
- 238000010521 absorption reaction Methods 0.000 abstract description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 5
- 229910021529 ammonia Inorganic materials 0.000 abstract description 5
- 229910017604 nitric acid Inorganic materials 0.000 abstract description 5
- 235000011149 sulphuric acid Nutrition 0.000 abstract description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 4
- 230000004060 metabolic process Effects 0.000 abstract description 4
- 244000005700 microbiome Species 0.000 description 9
- 238000001179 sorption measurement Methods 0.000 description 5
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000002503 metabolic effect Effects 0.000 description 3
- 230000007269 microbial metabolism Effects 0.000 description 2
- 230000035755 proliferation Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model discloses a many compartments room biological purification organic waste gas device, the power distribution box comprises a box body, the inside waste gas purification mechanism and the circulation of being equipped with of box spray the mechanism, waste gas purification mechanism includes first baffle, first baffle is established inside the box, first baffle and box fixed connection, first baffle one side is equipped with the second baffle, second baffle and box fixed connection, second baffle one side is kept away from to first baffle is equipped with first cavity. The utility model discloses a microbial cell is to pollutant's absorption, absorption and degradation function, and microbial cell has individual little, the surface area is big, the adsorptivity is strong, the manifold characteristics of metabolism type, decomposes into simple inorganics such as CO2, H2O, H2SO4, HNO3 after absorbing hydrogen sulfide, methyl mercaptan, sulfureted alcohol, dimethyl disulfide, ammonia, trimethylamine lamp harmful substance in the pollutant.
Description
Technical Field
The utility model relates to a waste gas treatment field, concretely relates to many compartments room biological purification organic waste gas device.
Background
The treatment of exhaust gas is also called exhaust gas purification. The waste gas treatment refers to the work of pretreating waste gas generated in industrial places and factory workshops before the waste gas is discharged to the outside so as to reach the national standard of the external discharge of the waste gas. The general waste gas treatment comprises the aspects of organic waste gas treatment, dust waste gas treatment, acid-base waste gas treatment, peculiar smell waste gas treatment, air sterilization, disinfection and purification and the like.
At present, a device for generating chemistry by using chemical liquid medicine and waste gas so as to generate harmless substances exists, but when the device is actually used, the liquid medicine and the waste gas are required to be used for treating the waste gas, the consumption of the liquid medicine is large, the cost is high, and secondary pollution is easily caused by a product after the reaction.
Therefore, it is necessary to invent a multi-compartment biological purification device for organic waste gas to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a multi-compartment biological purification organic waste gas device, through the absorption of little biological cell to pollutant, absorption and degradation function, the cell of microorganism has individual little, the surface area is big, the adsorptivity is strong, the manifold characteristics of metabolism type, hydrogen sulfide in with the pollutant, methyl mercaptan, the sulfureted alcohol, dimethyl disulfide, ammonia, decompose into CO2 after the absorption of trimethylamine lamp harmful substance, H2O, H2SO4, simple inorganic matters such as HNO3, thereby effectively get rid of NH3, foul compositions such as H2S, then the gas that is purified is discharged from the exhaust hole, through being equipped with shower nozzle and circulating water pump, thereby guarantee first filler, the moist of second filler and third filler, be provided with the advantage for microorganism metabolism and reproduction, thereby improve the microbial degradation ability, with the above-mentioned weak point in the solution technique.
In order to achieve the above object, the present invention provides the following technical solutions: a multi-compartment biological organic waste gas purification device comprises a box body, wherein a waste gas purification mechanism and a circulating spraying mechanism are arranged inside the box body;
the waste gas purification mechanism comprises a first baffle plate, the first baffle plate is arranged in a box body and fixedly connected with the box body, a second baffle plate is arranged on one side of the first baffle plate and fixedly connected with the box body, a first cavity is arranged on one side of the first baffle plate, which is far away from the second baffle plate, a second cavity is arranged between the first baffle plate and the second baffle plate, a third cavity is arranged on one side of the second baffle plate, which is far away from the first baffle plate, a first filler is arranged in the first cavity and fixedly connected with the inner wall of the first cavity, a second filler is arranged in the second cavity and fixedly connected with the inner wall of the second cavity, a third filler is arranged in the third cavity and fixedly connected with the inner wall of the third cavity, a fan is arranged at the top of the box body and fixedly connected with the box body, and the output end of the fan extends into the first cavity, the fan output end penetrates through the first filler and extends out of the bottom of the first filler, a first connecting hole is formed in the top of one side of the first partition plate and is communicated with the first cavity and the second cavity, a second connecting hole is formed in the bottom of one side of the second partition plate and is communicated with the second cavity and the third cavity;
the circulating spraying mechanism comprises through holes, the number of the through holes is two, the through holes are formed in the bottom of a first partition plate and the bottom of a second partition plate respectively, the first cavity, the second cavity and a third cavity are communicated through the through holes, a spraying pipe is arranged inside the first cavity and penetrates through the first partition plate and the second partition plate, the spraying pipe extends to the inside of the third cavity, the spraying pipe is fixedly connected with the first partition plate and the second partition plate respectively, a spray head is arranged at the bottom of the spraying pipe, and the spray head is fixedly connected with the spraying pipe.
Preferably, a circulating water pump is arranged at the top of the box body and fixedly connected with the box body.
Preferably, the output end of the circulating water pump extends into the box body, the output end of the circulating water pump is fixedly connected with the spray pipe, and the input end of the circulating water pump extends to the bottom of the second cavity.
Preferably, circulation make-up water is arranged at the bottom of the second chamber, the circulation make-up water extends into the first chamber and the third chamber through the through hole, and the output end of the circulation water pump extends into the circulation make-up water.
Preferably, microbial communities are arranged inside the first filler, the second filler and the third filler, the first filler, the second filler and the third filler are all in a porous honeycomb shape, and the first filler, the second filler and the third filler are all made of ethylene-propylene copolymer materials.
Preferably, the bottom height of the first connecting hole is greater than the top heights of the first filler and the second filler, and the top height of the second connecting hole is less than the bottom heights of the second filler and the third filler.
Preferably, the top of one side, close to the third chamber, of the box body is provided with an exhaust hole, and the exhaust hole extends into the third chamber.
In the technical scheme, the utility model provides a technological effect and advantage:
through the adsorption, absorption and degradation functions of microbial cells on pollutant substances, the microbial cells have the characteristics of small size, large surface area, strong adsorbability and various metabolic types, harmful substances such as hydrogen sulfide, methyl mercaptan, sulfureted alcohol, dimethyl disulfide, ammonia and trimethylamine in pollutants are adsorbed and then decomposed into simple inorganic substances such as CO2, H2O, H2SO4 and HNO3, SO that malodorous components such as NH3 and H2S are effectively removed, purified gas is discharged from an exhaust hole, and a spray head and a circulating water pump are arranged to ensure the wetting of a first filler, a second filler and a third filler, provide favorable conditions for microbial metabolism and proliferation, and improve the microbial degradation capability.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a top view of the present invention;
fig. 3 is a side view of the present invention;
fig. 4 is a top cross-sectional view of the present invention;
fig. 5 is an enlarged view of the structure of the portion a of fig. 1 according to the present invention.
Description of reference numerals:
the device comprises a box body 1, a waste gas purification mechanism 2, a circulating spray mechanism 3, a second partition plate 4, a first cavity 5, a second cavity 6, a third cavity 7, a first partition plate 8, a first filler 9, a second filler 10, a third filler 11, a first connecting hole 12, a second connecting hole 13, a fan 14, a through hole 15, a spray pipe 16, a spray head 17 and a circulating water pump 18.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
The utility model provides a multi-compartment biological organic waste gas purification device as shown in figures 1-5, which comprises a box body 1, wherein a waste gas purification mechanism 2 and a circulating spraying mechanism 3 are arranged inside the box body 1;
the waste gas purification mechanism 2 comprises a first partition plate 8, the first partition plate 8 is arranged inside a box body 1, the first partition plate 8 is fixedly connected with the box body 1, a second partition plate 4 is arranged on one side of the first partition plate 8, the second partition plate 4 is fixedly connected with the box body 1, a first chamber 5 is arranged on one side of the first partition plate 8, which is far away from the second partition plate 4, a second chamber 6 is arranged between the first partition plate 8 and the second partition plate 4, a third chamber 7 is arranged on one side of the second partition plate 4, which is far away from the first partition plate 8, a first filler 9 is arranged inside the first chamber 5, the first filler 9 is fixedly connected with the inner wall of the first chamber 5, a second filler 10 is arranged inside the second chamber 6, the second filler 10 is fixedly connected with the inner wall of the second chamber 6, a third filler 11 is arranged inside the third chamber 7, and the third filler 11 is fixedly connected with the inner wall of the third chamber 7, the top of the box body 1 is provided with a fan 14, the fan 14 is fixedly connected with the box body 1, the output end of the fan 14 extends into the first cavity, the output end of the fan 14 penetrates through the first filler 9 and extends out of the bottom of the first filler 9, the top of one side of the first partition plate 8 is provided with a first connecting hole 12, the first connecting hole 12 is communicated with the first cavity 5 and the second cavity 6, the bottom of one side of the second partition plate 4 is provided with a second connecting hole 13, and the second connecting hole 13 is communicated with the second cavity 6 and the third cavity 7;
the circulating spraying mechanism 3 comprises through holes 15, the number of the through holes 15 is two, the through holes 15 are respectively arranged at the bottoms of a first partition plate 8 and a second partition plate 4, a first cavity 5, a second cavity 6 and a third cavity 7 are communicated through the through holes 15, a spraying pipe 16 is arranged inside the first cavity 5, the spraying pipe 16 penetrates through the first partition plate 8 and the second partition plate 4, the spraying pipe 16 extends to the inside of the third cavity 7, the spraying pipe 16 is respectively fixedly connected with the first partition plate 8 and the second partition plate 4, a spraying head 17 is arranged at the bottom of the spraying pipe 16, and the spraying head 17 is fixedly connected with the spraying pipe 16.
Further, in the above technical solution, a circulating water pump 18 is arranged at the top of the tank body 1, and the circulating water pump 18 is fixedly connected with the tank body 1;
further, in the above technical solution, the output end of the circulating water pump 18 extends into the tank 1, the output end of the circulating water pump 18 is fixedly connected with the spray pipe 16, and the input end of the circulating water pump 18 extends to the bottom of the second chamber 6;
further, in the above technical solution, the bottom of the second chamber 6 is provided with circulating make-up water, the circulating make-up water extends into the first chamber 5 and the third chamber 7 through the through hole 15, and the output end of the circulating water pump 18 extends into the circulating make-up water;
further, in the above technical solution, microbial communities are arranged inside the first filler 9, the second filler 10 and the third filler 11, the first filler 9, the second filler 10 and the third filler 11 are all in the shape of a porous honeycomb, and the first filler 9, the second filler 10 and the third filler 11 are all made of ethylene-propylene copolymer;
further, in the above technical solution, the height of the bottom of the first connection hole 12 is greater than the height of the tops of the first filler 9 and the second filler 10, and the height of the top of the second connection hole 13 is less than the height of the bottoms of the second filler 10 and the third filler 11;
further, in the above technical solution, the top of the side of the box body 1 close to the third chamber 7 is provided with an exhaust hole, and the exhaust hole extends into the third chamber 7;
the implementation mode is specifically as follows: when the utility model is used, firstly, the organic waste gas is sent into the bottom of the first cavity 5 through the fan 14, through the first filler and the spray nozzle 17 at the top of the first cavity 5, the organic waste gas is cooled, dedusted and humidified in the area, and partial pollutants are removed, then the organic waste gas enters the inside of the second cavity 6 through the first connecting hole 12, the waste gas passes through the second filler 10 and reacts with the microorganisms in the second filler 10 and the circulating water sprayed by the spray nozzle 17 at the top of the second cavity 6 to perform biological reactions such as adsorption, mass transfer and degradation on the water film formed on the surface of the second filler 10, so as to remove most pollutants, then the waste gas enters the inside of the third cavity 7 through the second connecting hole 13 at one side of the second clapboard 4, the waste gas passes through the third filler 11 which is moist, porous and active and is filled with microorganisms from bottom to top, and the adsorption, absorption and degradation functions of pollutant substances by utilizing, the cell of the microorganism has the characteristics of small size, large surface area, strong adsorbability and various metabolic types, harmful substances in pollutants such as hydrogen sulfide, methyl mercaptan, sulfureted alcohol, dimethyl disulfide, ammonia and trimethylamine lamp are adsorbed and then decomposed into simple inorganic substances such as CO2, H2O, H2SO4, HNO3 and the like, SO that malodorous components such as NH3, H2S and the like are effectively removed, then the purified gas is discharged from the exhaust hole, and the spray head 17 and the circulating water pump 18 are arranged to ensure that the first filler 9, the second filler 10 and the third filler 11 are wetted, SO that favorable conditions are provided for metabolism and reproduction of the microorganism, and the microbial degradation capacity is improved.
This practical theory of operation:
referring to the attached drawings 1-5 of the specification, organic waste gas is sent into the bottom of a first chamber 5 through a fan 14, the organic waste gas is cooled, dedusted and humidified in the region through a second filler and a nozzle 17 at the top of the first chamber 5, and then enters the inside of a second chamber 6 through a first connecting hole 12, the waste gas passes through the second filler 10 and undergoes biological reactions such as adsorption, mass transfer and degradation with microorganisms in the second filler 10 and a water film formed on the surface of the second filler 10 by circulating water sprayed from the nozzle 17 at the top of the second chamber 6, so as to remove most of pollutants, and then enters the inside of a third chamber 7 through a second connecting hole 13 at one side of a second partition plate 4, the waste gas passes through a third filler 11 which is moist, porous and active and is filled with microorganisms from bottom to top, and the adsorption, absorption and degradation functions of the microorganism cells on pollutant substances are utilized, the microbial cells have the characteristics of small size, large surface area, strong adsorbability and various metabolic types, and hydrogen sulfide, methyl mercaptan, sulfureted alcohol, dimethyl disulfide, ammonia and harmful substances of trimethylamine lamps in pollutants are adsorbed and then decomposed into simple inorganic substances such as CO2, H2O, H2SO4, HNO3 and the like, SO that malodorous components such as NH3, H2S and the like are effectively removed, then purified gas is discharged from an exhaust hole, and the first filler 9, the second filler 10 and the third filler 11 are ensured to be moistened by arranging the spray head 17 and the circulating water pump 18, SO that favorable conditions are provided for microbial metabolism and proliferation, and the microbial degradation capacity is improved.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (7)
1. The utility model provides a many compartments biological purification organic waste gas device, includes box (1), its characterized in that: a waste gas purification mechanism (2) and a circulating spraying mechanism (3) are arranged in the box body (1);
the waste gas purification mechanism (2) comprises a first partition plate (8), the first partition plate (8) is arranged inside a box body (1), the first partition plate (8) is fixedly connected with the box body (1), a second partition plate (4) is arranged on one side of the first partition plate (8), the second partition plate (4) is fixedly connected with the box body (1), a first chamber (5) is arranged on one side, away from the second partition plate (4), of the first partition plate (8), a second chamber (6) is arranged between the first partition plate (8) and the second partition plate (4), a third chamber (7) is arranged on one side, away from the first partition plate (8), of the second partition plate (4), a first filler (9) is arranged inside the first chamber (5), the first filler (9) is fixedly connected with the inner wall of the first chamber (5), a second filler (10) is arranged inside the second chamber (6), and the second filler (10) is fixedly connected with the inner wall of the second chamber (6), a third filler (11) is arranged in the third cavity (7), the third filler (11) is fixedly connected with the inner wall of the third cavity (7), a fan (14) is arranged at the top of the box body (1), the fan (14) is fixedly connected with the box body (1), the output end of the fan (14) extends into the first cavity, the output end of the fan (14) penetrates through the first filler (9) and extends out of the bottom of the first filler (9), a first connecting hole (12) is formed in the top of one side of the first partition plate (8), the first connecting hole (12) is communicated with the first cavity (5) and the second cavity (6), a second connecting hole (13) is formed in the bottom of one side of the second partition plate (4), and the second connecting hole (13) is communicated with the second cavity (6) and the third cavity (7);
circulating spray mechanism (3) includes through-hole (15), through-hole (15) quantity sets up to two, two through-hole (15) set up respectively in first baffle (8) and second baffle (4) bottom, first cavity (5), second cavity (6) and third cavity (7) are linked together through-hole (15), first cavity (5) inside is equipped with shower (16), shower (16) run through first baffle (8) and second baffle (4), shower (16) extend to inside third cavity (7), shower (16) respectively with first baffle (8) and second baffle (4) fixed connection, shower (16) bottom is equipped with shower nozzle (17), shower nozzle (17) and shower (16) fixed connection.
2. A multi-compartment biological organic waste gas purification device according to claim 1, wherein: and a circulating water pump (18) is arranged at the top of the box body (1), and the circulating water pump (18) is fixedly connected with the box body (1).
3. A multi-compartment biological organic waste gas purification apparatus according to claim 2, wherein: the output end of the circulating water pump (18) extends into the interior of the box body (1), the output end of the circulating water pump (18) is fixedly connected with the spray pipe (16), and the input end of the circulating water pump (18) extends to the bottom of the second cavity (6).
4. A multi-compartment biological organic waste gas purification apparatus according to claim 3, wherein: and circulating make-up water is arranged at the bottom of the second cavity (6), the circulating make-up water extends into the first cavity (5) and the third cavity (7) through the through hole (15), and the output end of the circulating water pump (18) extends into the circulating make-up water.
5. A multi-compartment biological organic waste gas purification device according to claim 1, wherein: microbial communities are arranged inside the first filler (9), the second filler (10) and the third filler (11), the first filler (9), the second filler (10) and the third filler (11) are all in a porous honeycomb shape, and the first filler (9), the second filler (10) and the third filler (11) are all made of ethylene propylene copolymer materials.
6. A multi-compartment biological organic waste gas purification device according to claim 1, wherein: the bottom height of the first connecting hole (12) is greater than the top heights of the first filler (9) and the second filler (10), and the top height of the second connecting hole (13) is less than the bottom heights of the second filler (10) and the third filler (11).
7. A multi-compartment biological organic waste gas purification device according to claim 1, wherein: the box body (1) is close to the top of one side of the third chamber (7) and is provided with an exhaust hole, and the exhaust hole extends into the third chamber (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020049740.5U CN211688451U (en) | 2020-01-10 | 2020-01-10 | Multi-compartment biological purification organic waste gas device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020049740.5U CN211688451U (en) | 2020-01-10 | 2020-01-10 | Multi-compartment biological purification organic waste gas device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211688451U true CN211688451U (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020049740.5U Expired - Fee Related CN211688451U (en) | 2020-01-10 | 2020-01-10 | Multi-compartment biological purification organic waste gas device |
Country Status (1)
| Country | Link |
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| CN (1) | CN211688451U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114931854A (en) * | 2022-05-31 | 2022-08-23 | 北京实力伟业环保科技有限公司 | System and method for purifying waste gas by microorganisms |
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2020
- 2020-01-10 CN CN202020049740.5U patent/CN211688451U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114931854A (en) * | 2022-05-31 | 2022-08-23 | 北京实力伟业环保科技有限公司 | System and method for purifying waste gas by microorganisms |
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Granted publication date: 20201016 |