CN113731144A - Industrial waste gas treatment process based on microorganisms - Google Patents
Industrial waste gas treatment process based on microorganisms Download PDFInfo
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- CN113731144A CN113731144A CN202111119017.5A CN202111119017A CN113731144A CN 113731144 A CN113731144 A CN 113731144A CN 202111119017 A CN202111119017 A CN 202111119017A CN 113731144 A CN113731144 A CN 113731144A
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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
- B01D53/75—Multi-step processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D51/00—Auxiliary pretreatment of gases or vapours to be cleaned
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D51/00—Auxiliary pretreatment of gases or vapours to be cleaned
- B01D51/10—Conditioning the gas to be cleaned
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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
- B01D53/002—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 condensation
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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
- B01D53/26—Drying gases or vapours
- B01D53/261—Drying gases or vapours by adsorption
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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
- B01D53/26—Drying gases or vapours
- B01D53/266—Drying gases or vapours by filtration
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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
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
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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
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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
- B01D2251/00—Reactants
- B01D2251/95—Specific microorganisms
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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
- B01D2257/40—Nitrogen compounds
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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 discloses a microorganism-based industrial waste gas treatment process, relates to the technical field of waste gas treatment, and solves the problems that the toxicity of waste gas is high, the influence on the activity of microorganisms is large, the treatment and purification are incomplete and the like in the conventional waste gas treatment process by utilizing microorganisms. A microorganism-based industrial waste gas treatment process comprises the following steps: step A: pretreating high-temperature waste gas generated in the industrial production process, wherein the high-temperature waste gas is introduced into an adjusting tank in the first step, adjusting the pH value of the waste gas to ensure that the pH value of the mixed waste gas and a water body is H1, the adjusted waste gas is introduced into a hydrolysis acidification tank to decompose nitrogenous substances in the waste gas in the second step, and the adjusted waste gas is introduced into an intermediate sedimentation tank to remove solid particles in the waste gas in the third step. The invention effectively reduces the toxicity and temperature of the waste gas by carrying out multiple treatment on the waste gas, and is convenient for improving the quality of the purified waste gas by purifying the waste gas by microorganisms.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a microorganism-based industrial waste gas treatment process.
Background
Along with the rapid development of social economy, a large amount of waste gas can be generated in the industrial production process, and the waste gas purification mainly refers to the treatment work of the industrial waste gas generated in industrial places, such as dust particles, smoke and dust, peculiar smell gas and toxic and harmful gas; the waste gas contains many kinds of pollutants, the physical and chemical properties of the pollutants are very complex, the toxicity is different, the common waste gas contains sulfur dioxide, nitrogen oxide, hydrocarbon and the like, the industrial waste gas is treated by microorganisms, and the method has the advantages of simple equipment, less investment, low operation cost, no secondary pollution and the like.
However, the toxicity of the waste gas is high in the existing waste gas treatment process by utilizing microorganisms, the influence on the activity of the microorganisms is large, and the treatment and purification are incomplete; thus, the existing needs are not met, for which we propose a process for the treatment of industrial waste gases based on microorganisms.
Disclosure of Invention
The invention aims to provide a microorganism-based industrial waste gas treatment process, which aims to solve the problems of high toxicity in waste gas, large influence on the activity of microorganisms, incomplete treatment and purification and the like in the conventional waste gas treatment process by utilizing microorganisms in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a microorganism-based industrial waste gas treatment process comprises the following steps:
step A: pretreating high-temperature waste gas generated in the industrial production process, wherein the high-temperature waste gas is introduced into an adjusting tank in the first step, the pH value of the waste gas is adjusted to be H1 after the waste gas is mixed with a water body, the adjusted waste gas is introduced into a hydrolysis acidification tank to decompose nitrogenous substances in the waste gas in the second step, and the waste gas is introduced into an intermediate sedimentation tank to remove solid particles in the waste gas in the third step, so that the microbial treatment difficulty can be effectively reduced through the pretreatment processes in the three steps, the temperature of the waste gas can be synchronously reduced, and the temperature of the waste gas is kept below T1 at the moment;
and B: the waste gas is introduced into the aeration biological filter tower through a fan, the air volume of the waste gas is kept below L1 in the process, the waste gas is composed of an aeration structure and microbial fillers in the aeration biological filter tower, nutrient solution and raw water are mixed through a water pump and then injected into the aeration biological filter tower, the injection amount of mixed solution in the process is kept below L2, the microbial fillers are conveniently sprayed in real time, the culture of microbes is facilitated, the activity in the microbial purification process is kept, and meanwhile, the aeration structure is driven to operate through a motor, so that the waste gas enters the aeration structure under the action of the fan;
and C: the aeration structure can rapidly carry out aeration treatment on the pretreated waste gas, the temperature of the waste gas is further reduced, the influence of high temperature on the activity of microorganisms is effectively avoided, and the waste gas can be purified by the microorganisms in the microorganism filler after the aeration is finished;
step D: introducing oxygen-containing mixed gas into the aeration biological filter tower in the purification process, wherein the oxygen content in the oxygen-containing mixed gas is K1, discharging wastewater, and introducing the gas into a plant shed by using a fan after the purification is finished so that the gas can be further absorbed by the plants cultured in the plant shed;
step E: can adsorb solid particle and steam in the gas through adsorbing the cotton, the cleanness of being convenient for to discharge, and simultaneously according to purifying back gas quality with gas circulation let in aeration biological filter tower, purify once more, until gas quality is up to standard.
Preferably, the aerated biological filter tower in the step B comprises an aerated structure and a microbial filler.
Preferably, the plant shed in the step D comprises plants and absorbent cotton.
Preferably, the pH value of the waste gas in the step A after being mixed with the water body is H1 to be 6.8-7.5.
Preferably, the temperature T1 of the exhaust gas in step a is 50 ℃.
Preferably, the flow rate L1 for introducing the waste gas in the step B is 1.6m3/s。
Preferably, the amount of the mixed solution injected in the step B is 0.5m L23/s。
Preferably, the model of the fan in the step B is YX-32S-1, and the model of the motor in the step B is YEJ 3-112M-4.
Preferably, the oxygen-containing mixed gas in the step D contains 15% of oxygen K1.
Preferably, the type of the absorbent cotton in the step E is absorbent cotton.
Compared with the prior art, the invention has the beneficial effects that:
the invention effectively reduces the toxicity and temperature in the waste gas by pretreating the waste gas, can neutralize the pH value, avoids the influence on the activity of microorganisms in the subsequent purification process, and is convenient for improving the quality of the purified waste gas by purifying the microorganisms.
Drawings
FIG. 1 is a schematic flow diagram of the present invention as a whole;
FIG. 2 is a schematic flow diagram of an aerated biological filtration tower of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1 to fig. 2, an embodiment of the present invention includes: a microorganism-based industrial waste gas treatment process comprises the following steps:
step A: pretreating high-temperature waste gas generated in the industrial production process, wherein the high-temperature waste gas is introduced into an adjusting tank in the first step, the pH value of the waste gas is adjusted to be H1 after the waste gas is mixed with a water body, the adjusted waste gas is introduced into a hydrolysis acidification tank to decompose nitrogenous substances in the waste gas in the second step, and the waste gas is introduced into an intermediate sedimentation tank to remove solid particles in the waste gas in the third step, so that the microbial treatment difficulty can be effectively reduced through the pretreatment processes in the three steps, the temperature of the waste gas can be synchronously reduced, and the temperature of the waste gas is kept below T1 at the moment;
and B: the waste gas is introduced into the aeration biological filter tower through a fan, the air volume of the waste gas is kept below L1 in the process, the waste gas is composed of an aeration structure and microbial fillers in the aeration biological filter tower, nutrient solution and raw water are mixed through a water pump and then injected into the aeration biological filter tower, the injection amount of mixed solution in the process is kept below L2, the microbial fillers are conveniently sprayed in real time, the culture of microbes is facilitated, the activity in the microbial purification process is kept, and meanwhile, the aeration structure is driven to operate through a motor, so that the waste gas enters the aeration structure under the action of the fan;
and C: the aeration structure can rapidly carry out aeration treatment on the pretreated waste gas, the temperature of the waste gas is further reduced, the influence of high temperature on the activity of microorganisms is effectively avoided, and the waste gas can be purified by the microorganisms in the microorganism filler after the aeration is finished;
step D: introducing oxygen-containing mixed gas into the aeration biological filter tower in the purification process, wherein the oxygen content in the oxygen-containing mixed gas is K1, discharging wastewater, and introducing the gas into a plant shed by using a fan after the purification is finished so that the gas can be further absorbed by the plants cultured in the plant shed;
step E: can adsorb solid particle and steam in the gas through adsorbing the cotton, the cleanness of being convenient for to discharge, and simultaneously according to purifying back gas quality with gas circulation let in aeration biological filter tower, purify once more, until gas quality is up to standard.
Further, the aeration biological filter tower in the step B comprises an aeration structure and microorganism fillers.
Further, the plant shed in the step D comprises plants and adsorption cotton.
Further, the pH value H1 of the mixture of the waste gas and the water body in the step A is 6.8-7.5.
Further, the exhaust gas temperature T1 in step A was 50 ℃.
Further, the air volume L1 for introducing the waste gas in the step B is 1.6m3/s。
Further, the amount of the mixed solution injected in step B, L2, was 0.5m3/s。
Further, the fan model in the step B is YX-32S-1, and the motor model in the step B is YEJ 3-112M-4.
Further, the oxygen content K1 in the oxygen-containing mixed gas in step D was 15%.
Further, the type of the absorbent cotton in the step E is absorbent cotton.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. A process for treating industrial waste gas based on microorganisms, which is characterized by comprising the following steps:
step A: pretreating high-temperature waste gas generated in the industrial production process, wherein the high-temperature waste gas is introduced into an adjusting tank in the first step, the pH value of the waste gas is adjusted to be H1 after the waste gas is mixed with a water body, the adjusted waste gas is introduced into a hydrolysis acidification tank to decompose nitrogenous substances in the waste gas in the second step, and the waste gas is introduced into an intermediate sedimentation tank to remove solid particles in the waste gas in the third step, so that the microbial treatment difficulty can be effectively reduced through the pretreatment processes in the three steps, the temperature of the waste gas can be synchronously reduced, and the temperature of the waste gas is kept below T1 at the moment;
and B: the waste gas is introduced into the aeration biological filter tower through a fan, the air volume of the waste gas is kept below L1 in the process, the waste gas is composed of an aeration structure and microbial fillers in the aeration biological filter tower, nutrient solution and raw water are mixed through a water pump and then injected into the aeration biological filter tower, the injection amount of mixed solution in the process is kept below L2, the microbial fillers are conveniently sprayed in real time, the culture of microbes is facilitated, the activity in the microbial purification process is kept, and meanwhile, the aeration structure is driven to operate through a motor, so that the waste gas enters the aeration structure under the action of the fan;
and C: the aeration structure can rapidly carry out aeration treatment on the pretreated waste gas, the temperature of the waste gas is further reduced, the influence of high temperature on the activity of microorganisms is effectively avoided, and the waste gas can be purified by the microorganisms in the microorganism filler after the aeration is finished;
step D: introducing oxygen-containing mixed gas into the aeration biological filter tower in the purification process, wherein the oxygen content in the oxygen-containing mixed gas is K1, discharging wastewater, and introducing the gas into a plant shed by using a fan after the purification is finished so that the gas can be further absorbed by the plants cultured in the plant shed;
step E: can adsorb solid particle and steam in the gas through adsorbing the cotton, the cleanness of being convenient for to discharge, and simultaneously according to purifying back gas quality with gas circulation let in aeration biological filter tower, purify once more, until gas quality is up to standard.
2. The process according to claim 1, wherein the industrial waste gas treatment process comprises: and the aeration biological filter tower in the step B comprises an aeration structure and microbial fillers.
3. The process according to claim 1, wherein the industrial waste gas treatment process comprises: the plant shed in the step D comprises plants and adsorption cotton.
4. The process according to claim 1, wherein the industrial waste gas treatment process comprises: and B, mixing the waste gas in the step A with a water body, and then, controlling the pH value H1 to be 6.8-7.5.
5. The process according to claim 1, wherein the industrial waste gas treatment process comprises: the exhaust gas temperature T1 in step a was 50 ℃.
6. The process according to claim 1, wherein the industrial waste gas treatment process comprises: the air volume L1 for introducing the waste gas in the step B is 1.6m3/s。
7. The process according to claim 1, wherein the industrial waste gas treatment process comprises: the injection amount of the mixed solution L2 in the step B is 0.5m3/s。
8. The process according to claim 1, wherein the industrial waste gas treatment process comprises: the fan model in the step B is YX-32S-1, and the motor model in the step B is YEJ 3-112M-4.
9. The process according to claim 1, wherein the industrial waste gas treatment process comprises: the oxygen content K1 in the oxygen-containing mixed gas in the step D is 15%.
10. The process according to claim 1, wherein the industrial waste gas treatment process comprises: the type of the absorbent cotton in the step E is absorbent cotton.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111119017.5A CN113731144A (en) | 2021-09-24 | 2021-09-24 | Industrial waste gas treatment process based on microorganisms |
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| CN202111119017.5A CN113731144A (en) | 2021-09-24 | 2021-09-24 | Industrial waste gas treatment process based on microorganisms |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0774264A1 (en) * | 1995-11-20 | 1997-05-21 | Espo, Ltd. | Air purifying agent and air purifying method |
| JP2010036133A (en) * | 2008-08-06 | 2010-02-18 | Panasonic Corp | Gas treatment method and treatment apparatus |
| CN109821400A (en) * | 2019-02-27 | 2019-05-31 | 广州益禄丰生态环保科技有限责任公司 | Integrated roof exhaust-gas treatment is plant bed |
| CN212017359U (en) * | 2020-04-24 | 2020-11-27 | 重庆市环卫集团有限公司 | Complete device for treating malodorous gas in biodiesel production workshop |
| CN113117514A (en) * | 2021-05-31 | 2021-07-16 | 青岛万慧源环保科技有限公司 | Method for removing malodorous substances based on enzyme |
-
2021
- 2021-09-24 CN CN202111119017.5A patent/CN113731144A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0774264A1 (en) * | 1995-11-20 | 1997-05-21 | Espo, Ltd. | Air purifying agent and air purifying method |
| JP2010036133A (en) * | 2008-08-06 | 2010-02-18 | Panasonic Corp | Gas treatment method and treatment apparatus |
| CN109821400A (en) * | 2019-02-27 | 2019-05-31 | 广州益禄丰生态环保科技有限责任公司 | Integrated roof exhaust-gas treatment is plant bed |
| CN212017359U (en) * | 2020-04-24 | 2020-11-27 | 重庆市环卫集团有限公司 | Complete device for treating malodorous gas in biodiesel production workshop |
| CN113117514A (en) * | 2021-05-31 | 2021-07-16 | 青岛万慧源环保科技有限公司 | Method for removing malodorous substances based on enzyme |
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