CN107335335B - Stability-enhanced organic waste gas treatment device for biological trickling filter - Google Patents
Stability-enhanced organic waste gas treatment device for biological trickling filter Download PDFInfo
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- CN107335335B CN107335335B CN201710736772.5A CN201710736772A CN107335335B CN 107335335 B CN107335335 B CN 107335335B CN 201710736772 A CN201710736772 A CN 201710736772A CN 107335335 B CN107335335 B CN 107335335B
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- 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
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- 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
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- 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
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- 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
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Abstract
The invention provides a stability-enhanced biotrickling filter organic waste gas treatment device, which comprises a tower body and a nutrient solution purification device positioned outside the tower body, wherein the nutrient solution purification device is positioned on a nutrient solution circulation loop of the tower body, one end of the nutrient solution purification device is communicated with a liquid storage tank (3) at the bottom of the tower body, and the other end of the nutrient solution purification device is communicated with a nutrient solution spray pipe (21) at the top of the tower body. The biological trickling filter organic waste gas treatment device provided by the invention has good system stability and higher treatment effect on low-concentration large-flow organic waste gas, and is energy-saving and free of secondary pollution.
Description
Technical Field
The invention relates to the technical field of organic waste gas treatment, in particular to a biotrickling filter technology and a biotrickling filter device for treating low-concentration large-flow organic industrial waste gas.
Background
The air pollution problem caused by the development of industry and the acceleration of the world urbanization process is more serious, and the human health and ecological safety are seriously threatened. The bio-trickling filtration method has become an important biological treatment method for purifying Volatile Organic Compounds (VOCs) due to less investment, no secondary pollution and conformity with the concept of pollutant ecological restoration.
In the actual operation process of the biological trickling filter, because of the metabolic waste and the carbon dioxide generated by decomposing VOCs by microorganisms, the substances enter the nutrient solution to reduce the pH value of the nutrient solution, increase the viscosity, accumulate biomass and the like, and cause adverse effects on the maintenance of the subsequent trickling filter and the effective degradation of VOCs. Therefore, how to improve the treatment effect of the VOCs in the bio-trickling filter and the system stability becomes a technical problem to be solved urgently in the field.
Disclosure of Invention
The invention aims to provide a biotrickling filter device and technology with higher treatment efficiency, good treatment effect and system stability aiming at low-concentration high-flow VOCs.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides an organic waste gas treatment device of biotrickling filter of intensive stability, includes the tower body and is located the outside nutrient solution purifier of tower body, nutrient solution purifier is located on the nutrient solution circulation loop of tower body, nutrient solution purifier's one end with the reservoir intercommunication of tower body bottom, the other end with the nutrient solution shower intercommunication at tower body top.
Preferably, in above-mentioned bio-trickling filter organic waste gas treatment device, nutrient solution purifier includes the box and is located the algae liquid dispenser of box top, algae liquid dispenser with the box passes through the feed liquor pipe intercommunication, the one end of box with the reservoir intercommunication of tower body bottom, the other end with the nutrient solution shower intercommunication at tower body top.
Preferably, in the organic waste gas treatment device of the biotrickling filter, the inner cavity of the box body is divided into a nutrient solution treatment tank and a liquid outlet tank by a diaphragm plate, an overflow window is formed between the top end of the diaphragm plate and the top plate of the box body, the nutrient solution treatment tank is communicated with a liquid storage tank at the bottom of the tower body, and the liquid outlet tank is communicated with a nutrient solution spray pipe at the top of the tower body.
Preferably, in the organic waste gas treatment device of the biotrickling filter, a heater for heating the nutrient solution is arranged at the bottom of the nutrient solution treatment tank.
Preferably, in the organic waste gas treatment device of the biotrickling filter, a temperature controller is arranged in the box body, and the temperature controller is electrically connected with the heater.
Preferably, in the organic waste gas treatment device of the bio-trickling filter, a fluorescent lamp is installed on the top plate of the box body at a position corresponding to the nutrient solution treatment tank.
Preferably, in the organic waste gas treatment device of the biotrickling filter, a first pH monitor meter and a second pH monitor meter are further included, the first pH monitor meter is located on a communicating pipe between the nutrient solution treatment tank and the liquid storage tank, and the second pH monitor meter is located on a communicating pipe between the liquid outlet tank and the nutrient solution spray pipe.
Preferably, in the organic waste gas treatment device of the biological trickling filter, a flow meter is arranged on a communication pipeline between the nutrient solution treatment tank and the liquid storage tank.
Preferably, in the organic waste gas treatment device of the biotrickling filter, a plurality of packing chambers are arranged in the tower body along the vertical direction, and a liquid distributor is arranged at the top of each packing chamber.
Preferably, in the organic waste gas treatment device of the biotrickling filter, a gas sampling port is arranged on the side wall of the tower body at a position corresponding to each packing chamber.
According to the technical scheme, in the organic waste gas treatment device of the bio-trickling filter, the nutrient solution purification device is arranged outside the tower body and is positioned on the nutrient solution circulation loop, one end of the nutrient solution purification device is communicated with the liquid storage tank at the bottom of the tower body, and the other end of the nutrient solution purification device is communicated with the nutrient solution spray pipe at the top of the tower body, so that the nutrient solution can be purified in the circulation process, the biochemical effect of a filler layer in the tower body is improved, the blockage of the filler layer in the tower body is favorably prevented, the service life of the nutrient solution is prolonged, and the degradation efficiency of the bio-trickling filter is enhanced. In conclusion, the invention can effectively improve the organic waste gas treatment effect and the system stability of the biological trickling filter.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic view of a stability-enhanced bio-trickling filter organic waste gas treatment device according to an embodiment of the present invention.
Labeled in the figure as:
1. an air inlet pipe; 2. perforating a gas distribution pipe; 3. a liquid storage tank; 4. a liquid outlet pipe; 5. a flow meter; 6. a first pH monitor; 7. a temperature controller; 8. a liquid inlet pipe; 9. a algae liquid dispenser; 10. a fluorescent lamp; 11. a nutrient solution treatment tank; 12. a heater; 13. a liquid outlet groove; 14. a liquid outlet valve; 15. a second pH monitor; 16. a circulation pump; 17. an exhaust funnel; 18. a circulation pipe; 19. an air outlet pipe; 20. a demister; 21. a nutrient solution spray pipe; 22. a liquid distributor; 23. a gas sampling port; 24. a filler; 25. a box body.
Detailed Description
For the convenience of understanding, the invention is further described below with reference to the accompanying drawings.
Referring to fig. 1, the biological trickling filter organic waste gas treatment device with enhanced stability according to an embodiment of the present invention is schematically shown, and the biological trickling filter organic waste gas treatment device according to the embodiment of the present invention includes a tower body, and further includes a nutrient solution purification device located outside the tower body, the nutrient solution purification device is located on a nutrient solution circulation loop of the tower body, one end of the nutrient solution purification device is communicated with a liquid storage tank 3 at the bottom of the tower body, and the other end of the nutrient solution purification device is communicated with a nutrient solution spray pipe 21 at the top of the tower body.
In the organic waste gas treatment device of the biotrickling filter, the outside of the tower body is provided with the nutrient solution purification device, the nutrient solution purification device is positioned on the nutrient solution circulation loop, one end of the nutrient solution purification device is communicated with the liquid storage tank at the bottom of the tower body, and the other end of the nutrient solution purification device is communicated with the nutrient solution spray pipe at the top of the tower body, so that the nutrient solution can be purified in the circulation process, the biochemical effect of a filler layer in the tower body is increased, the blockage of the filler layer in the tower body is favorably prevented, and the service life of the nutrient solution is prolonged. In conclusion, the invention can improve the organic waste gas treatment effect and the system stability of the biological trickling filter.
As shown in fig. 1, in this embodiment, the nutrient solution purification apparatus includes a box 25 and an algae solution dispenser 9 located above the box 25, the algae solution dispenser 9 is communicated with the box 25 through a liquid inlet pipe 8, one end of the box 25 is communicated with a liquid storage tank 3 at the bottom of the tower body, and the other end is communicated with a nutrient solution spray pipe 21 at the top of the tower body. The nutrient solution treatment device purifies the nutrient solution by using algae, and can effectively remove metabolic waste and carbon dioxide generated by decomposing VOCs (volatile organic compounds) by microorganisms in the nutrient solution.
In addition to the algae degradation of the bacterial metabolites in the nutrient solution provided in this embodiment, in other embodiments, the nutrient solution may be purified in other ways, such as by physical filtration of the bacterial metabolites in the nutrient solution.
In order to improve the purification treatment effect, in this embodiment, the inner cavity of the box 25 is divided into two parts, namely a nutrient solution treatment tank 11 and a liquid outlet tank 13, by a diaphragm plate (not marked in the figure), an overflow window (not marked in the figure) is formed between the top end of the diaphragm plate and the top plate of the box 25, the nutrient solution treatment tank 11 is communicated with the liquid storage tank 3 at the bottom of the tower body, and the liquid outlet tank 13 is communicated with the nutrient solution spray pipe 21 at the top of the tower body.
In this embodiment, a heater 12 for heating the nutrient solution is provided at the bottom of the nutrient solution treatment tank 11 in order to maintain good growth of algae, and a temperature controller 7 electrically connected to the heater 12 is provided in the casing 25 in order to control the heating temperature. In order to provide illumination required for the growth of algae, a fluorescent lamp 10 is installed on the ceiling of the box 25 at a position corresponding to the nutrient solution treatment tank 11.
As shown in fig. 1, in this embodiment, the organic waste gas treatment device of the bio-trickling filter further includes a first pH monitor 6 and a second pH monitor 15, the first pH monitor 6 is located on a communication pipeline between the nutrient solution treatment tank 11 and the liquid storage tank 3, and the second pH monitor 15 is located on a communication pipeline between the liquid outlet tank 13 and the nutrient solution spray pipe 21. In the circulation process of the nutrient solution, the first pH monitor 6 and the second pH monitor 15 can detect the change of the pH value of the nutrient solution before and after the nutrient solution enters and exits the nutrient solution purification device in real time.
In order to adjust the amount of the nutrient solution entering the nutrient solution purification device, a flow meter 5 is arranged on a communication pipeline between the nutrient solution treatment tank 11 and the liquid storage tank 3.
In this embodiment, a plurality of filler chambers have been arranged along vertical direction in the tower body, and the top of every filler chamber all is provided with liquid distributor 22, like this, can make the nutrient solution spray more evenly on filler 24, be favorable to the stability of the even growth of interior microorganism of tower, distribution and biological trickling filter.
In order to facilitate the change of monitoring interior organic waste gas concentration behind the microbial degradation of biological trickling filter, gas sampling mouth 23 has all been seted up at the position that every packing chamber corresponds to the lateral wall of tower body, as shown in fig. 1.
The working principle of the organic waste gas treatment device of the bio-trickling filter provided by the embodiment of the invention is as follows:
organic waste gas enters the tower body through the gas inlet pipe 1 and is distributed through the perforated gas distribution pipe 2 communicated with the gas inlet pipe 1, so that the gas is uniformly diffused into the tower body. In the tower body, the organic waste gas passes through the liquid storage tank 3, then sequentially passes through the packing chambers from bottom to top, is adsorbed and degraded by the packing 24 in the packing chambers, then passes through the spraying area at the top of the tower body, and finally sequentially passes through the demister 20, the air outlet pipe 19 and the exhaust funnel 17 to enter the air.
Nutrient solution enters the tower body through a nutrient solution spraying pipe 21, then sequentially passes through each filling chamber from top to bottom and contacts with microorganisms, so that metabolic waste and carbon dioxide generated when the microorganisms decompose organic waste gas are carried by the nutrient solution and enter a liquid storage tank 3 at the bottom of the tower body, the nutrient solution in the liquid storage tank 3 flows out from a liquid outlet pipe 4 and enters a nutrient solution treatment tank 11 under the action of gravity, secondary pollutants such as carbon dioxide, strain metabolic products and the like in the nutrient solution (the secondary pollutants are generated when the microorganisms degrade the organic waste gas) can be degraded due to algae provided by an algae solution dispenser 9 in the nutrient solution treatment tank 11, so that the nutrient solution can be purified, and the purified nutrient solution overflows from the nutrient solution treatment tank 11 to the liquid outlet tank 13 and finally enters the nutrient solution spraying pipe 21 through a circulating pipe 18 under the action of a circulating pump 16, and the circulation is completed.
In this embodiment, a liquid outlet valve 14 is disposed at an outlet of the liquid outlet tank 13.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Therefore, any insubstantial changes from the invention, and substitutions made by those skilled in the art, are intended to be included within the scope of the invention as claimed.
Claims (9)
1. The method for treating the organic waste gas of the biotrickling filter with the enhanced stability is characterized by being completed by using a biotrickling filter organic waste gas treatment device, wherein the biotrickling filter organic waste gas treatment device comprises a tower body and a nutrient solution purification device positioned outside the tower body, the nutrient solution purification device is positioned on a nutrient solution circulation loop of the tower body, one end of the nutrient solution purification device is communicated with a liquid storage tank (3) at the bottom of the tower body, the other end of the nutrient solution purification device is communicated with a nutrient solution spray pipe (21) at the top of the tower body, the nutrient solution purification device comprises a box body (25) and an algae solution dispenser (9) positioned above the box body (25), the algae solution dispenser (9) is communicated with the box body (25) through a liquid inlet pipe (8), one end of the box body (25) is communicated with the liquid storage tank (3) at the bottom of the tower body, and the other end of the box body is communicated with the nutrient solution spray pipe (21) at the top of the tower body;
the method for treating the organic waste gas of the biological trickling filter comprises the following steps: algae is thrown into the box body (25) by the algae liquid dispenser (9) so as to degrade secondary pollutants in the nutrient solution in the box body (25).
2. The organic waste gas treatment method of the bio-trickling filter of claim 1, wherein the inner cavity of the box body (25) is divided into a nutrient solution treatment tank (11) and a liquid outlet tank (13) by a diaphragm plate, an overflow window is formed between the top end of the diaphragm plate and the top plate of the box body (25), the nutrient solution treatment tank (11) is communicated with the liquid storage tank (3) at the bottom of the tower body, and the liquid outlet tank (13) is communicated with the nutrient solution spray pipe (21) at the top of the tower body.
3. The biotrickling filter organic waste gas treatment method as recited in claim 2, characterized in that the bottom of the nutrient solution treatment tank (11) is provided with a heater (12) for heating the nutrient solution.
4. The biotrickling filter organic waste gas treatment method according to claim 3, characterized in that a temperature controller (7) is arranged in the box body (25), and the temperature controller (7) is electrically connected with the heater (12).
5. The biotrickling filter organic waste gas treatment method as recited in claim 2, characterized in that a fluorescent lamp (10) is installed on the top plate of said tank body (25) at a position corresponding to said nutrient solution treatment tank (11).
6. The biotrickling filter organic waste gas treatment method according to claim 2, further comprising a first pH monitor meter (6) and a second pH monitor meter (15), wherein the first pH monitor meter (6) is located on a communication pipeline between the nutrient solution treatment tank (11) and the liquid storage tank (3), and the second pH monitor meter (15) is located on a communication pipeline between the liquid outlet tank (13) and the nutrient solution spray pipe (21).
7. The method for treating the organic waste gas of the biotrickling filter according to claim 2, characterized in that a flow meter (5) is arranged on a communication pipeline between the nutrient solution treatment tank (11) and the liquid storage tank (3).
8. The biotrickling filter organic waste gas treatment method according to any of the claims 1-7, characterized in that a plurality of packed chambers are arranged in the tower body along the vertical direction, and the top of each packed chamber is provided with a liquid distributor (22).
9. The biotrickling filter organic waste gas treatment method as recited in claim 8, wherein the side wall of the tower body is provided with a gas sampling port (23) at a position corresponding to each packing chamber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710736772.5A CN107335335B (en) | 2017-08-24 | 2017-08-24 | Stability-enhanced organic waste gas treatment device for biological trickling filter |
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| CN201710736772.5A CN107335335B (en) | 2017-08-24 | 2017-08-24 | Stability-enhanced organic waste gas treatment device for biological trickling filter |
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| CN107335335A CN107335335A (en) | 2017-11-10 |
| CN107335335B true CN107335335B (en) | 2023-02-07 |
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| CN109173700A (en) * | 2018-10-09 | 2019-01-11 | 盐城市锦瑞石油机械有限公司 | A kind of device for high concentration petroleum emission of degrading |
| CN109621698A (en) * | 2019-01-18 | 2019-04-16 | 北京工业大学 | A kind of industrial heat-insulation device and method of bio-trickling filter |
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| CN201101946Y (en) * | 2007-06-15 | 2008-08-20 | 北京工业大学 | Biotrickling filter for processing volatile organic waste gas |
| CN102284245A (en) * | 2011-06-14 | 2011-12-21 | 浙江工业大学 | Method for treating waste gas by biotrickling filter, and special device thereof |
| CN202497819U (en) * | 2012-04-19 | 2012-10-24 | 天津凯英科技发展有限公司 | Biotrickling filter deodorization system |
| CN207187491U (en) * | 2017-08-24 | 2018-04-06 | 广东工业大学 | Low concentration big flow organic exhaust gas bio-trickling filter processing unit |
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