CN112892201A - System and method for treating organic waste gas by biological method - Google Patents
System and method for treating organic waste gas by biological method Download PDFInfo
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- CN112892201A CN112892201A CN202110090222.7A CN202110090222A CN112892201A CN 112892201 A CN112892201 A CN 112892201A CN 202110090222 A CN202110090222 A CN 202110090222A CN 112892201 A CN112892201 A CN 112892201A
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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
- B01D53/38—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
- 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
- B01D53/58—Ammonia
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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
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
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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
- B01D2257/30—Sulfur compounds
- B01D2257/306—Organic sulfur compounds, e.g. mercaptans
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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 belongs to the technical field of waste gas treatment, and particularly relates to a system and a method for treating organic waste gas by a biological method. The system comprises a spraying device, a biological filler layer and a biological water tank layer, wherein the biological filler layer comprises a net layer, filler and biological strains, and the biological water tank layer comprises a biological film, filler and a water tank filled with water. The organic waste gas is introduced into the treatment system, so that the organic waste gas sequentially passes through the biological filler layer and the biological water tank layer to form clean gas to be discharged, the fillers loaded with biological strains are used for decomposing odor pollutants in the organic waste gas and converting the odor pollutants into harmless inorganic substances such as water, carbon dioxide and the like, the first-layer treatment of the organic waste gas is realized, the organic waste gas which is not completely reacted enters the biological water tank, the waste gas is absorbed by water and is contacted with the surfaces of the biological membrane and the fillers to decompose macromolecular substances in the waste gas, and pollutants such as ammonia, hydrogen sulfide, benzene, alcohols, esters and the like in the organic waste gas are effectively removed.
Description
Technical Field
The invention belongs to the technical field of waste gas treatment, and particularly relates to a system and a method for treating organic waste gas by a biological method.
Background
Volatile organic waste gases VOCs are organic compounds that are very volatile under specific boiling point conditions, and the volatile organic waste gases VOCs mainly comprise sulfur hydrocarbons, oxygen-containing hydrocarbons, nitrogen hydrocarbons, halogenated hydrocarbons, hydrocarbons and polycyclic aromatic hydrocarbons with low boiling points. After being absorbed by human body, the volatile organic waste gas can threaten the physical and psychological health conditions of people to a great extent, and has no harm or benefit to the living environment and the growth of animals and plants.
In all atmospheric pollution, volatile organic waste gas belongs to one of the stubborn diseases which are most difficult to treat, and is also serious in pollution, particularly in painting, plastics and some chemical products, once the volatile organic waste gas is discharged into the air without treatment, the volatile organic waste gas threatens the health of human beings, causes destructive harm to organs such as noses, eyes, hearts and livers, and can cause the complication of cancers due to the occurrence of an allergic reaction source seriously. Therefore, attention is paid to the technology for treating the volatile organic waste gas.
The existing volatile waste gas treatment technology comprises an adsorption method, a catalytic combustion method and a condensation method, most of the existing volatile waste gas treatment technology has an adsorption effect on high-concentration organic waste gas, but has poor treatment capacity on low-concentration volatile waste gas.
Disclosure of Invention
In view of the above problems, the present invention provides a system and a method for biologically treating organic waste gas, wherein the filler loaded with biological strains is used to decompose malodorous pollutants in the organic waste gas and convert the malodorous pollutants into harmless inorganic substances such as water and carbon dioxide, thereby effectively removing pollutants such as ammonia, hydrogen sulfide, benzene, alcohol and ester in the organic waste gas.
The technical content of the invention is as follows:
the invention provides a system for treating organic waste gas by a biological method, which comprises a spraying device, a biological filler layer and a biological water tank layer;
the biological filler layer comprises a net layer, a filler and a biological strain;
the biological water tank layer comprises a biological film, a filler and a water tank filled with water.
The filler of the biological filler layer and the biological water tank layer comprises one or more than one of ceramsite, vesuvianite, light ceramic block, diatomite and tremolite.
The biological strains of the biological filler layer comprise one or more than one of bacillus, lactobacillus and pseudomonas;
the bacillus comprises one or more than one of bacillus cereus, bacillus licheniformis, bacillus subtilis and bacillus coagulans, and also comprises other facultative anaerobic bacillus;
the pseudomonas comprises more than one of plankton pseudomonas, pseudomonas aeruginosa and pseudomonas fluorescens or other pseudomonas;
the area ratio of the filler to the biological strain in the biological filler layer is (4:1) - (1: 1).
The spraying device, the biological packing layer and the biological water tank layer are sequentially arranged from top to bottom, and the spraying device is connected with the biological water tank layer through a water pipe.
The invention also provides a method for treating organic waste gas by a biological method, which comprises the following steps: introducing organic waste gas into the treatment system, so that the organic waste gas sequentially passes through the biological filler layer and the biological water tank layer to form clean gas for discharge, and a spraying device in the system sprays water drops to be sprayed on the biological filler layer;
the water sprayed by the spraying device is water in a biological water tank layer, and the spraying mode is intermittent spraying;
the biological filler layer comprises a net layer, a filler and a biological strain, wherein the filler is paved on the net layer, and the biological strain is paved on the filler;
the biological water tank layer comprises a biological film, a filler and a water tank filled with water, wherein the biological film is a biological strain decaying in the biological filler layer, and the biological film and the filler are arranged in the water tank filled with water.
The biological strains can obtain energy from the decomposition process while decomposing the odor pollutants in the organic waste gas, the biological strains can continue to grow and propagate, the odor pollutants in the organic waste gas can be continuously treated, the pollutant removal essence is that the odor pollutants are absorbed, metabolized and utilized by the biological strains as nutrient substances, the absorbed pollutants are decomposed and metabolized to generate cell metabolites, carbon dioxide, water and other substances, and harmless gas such as the carbon dioxide is desorbed from a biological film or a filler in a biological water tank and reversely diffused into the atmosphere.
The invention has the following beneficial effects:
the invention relates to a system and a method for treating organic waste gas by a biological method, wherein a filler loaded with biological strains is used for decomposing malodorous pollutants in the organic waste gas and converting the malodorous pollutants into harmless inorganic substances such as water, carbon dioxide and the like, so that the first layer treatment of the organic waste gas is realized, then the organic waste gas which is not completely reacted enters a biological water tank, the waste gas is absorbed by water and contacts with the surfaces of a biological film and the filler to decompose macromolecular substances in the waste gas, and pollutants such as ammonia, hydrogen sulfide, benzene, alcohols, esters and the like in the organic waste gas are effectively removed;
the filler loaded with biological strains has long service life, good hydrophilicity, easy film formation, no secondary pollution, convenient management and maintenance of subsequent management, low cost, high safety and stability, no potential safety hazard due to the decomposition of organic waste gas by the biological strains, high energy saving property, high treatment efficiency, removal rate of sulfur-containing malodorous substances of over 95 percent, removal rate of other substances of 70 to 95 percent, and capability of enabling treated gas to reach the national environmental standard.
Drawings
FIG. 1 is a schematic view of a system and process for treating organic waste gas by a biological method according to the present invention.
Detailed Description
The present invention is described in further detail in the following description of specific embodiments and the accompanying drawings, it is to be understood that these embodiments are merely illustrative of the present invention and are not intended to limit the scope of the invention, which is defined by the appended claims, and modifications thereof by those skilled in the art after reading this disclosure that are equivalent to the above described embodiments.
All the raw materials and reagents of the invention are conventional market raw materials and reagents unless otherwise specified.
Example 1
A system and a method for treating organic waste gas by a biological method are as follows:
1) a spraying device: as shown in fig. 1, the spraying device is connected with the biological water tank layer through a water pipe, the water sprayed by the spraying device is the water in the biological water tank layer, the water spraying mode is intermittent spraying, and the water is sprayed once within 0.5h to spray mist water drops on the biological filler layer;
2) a biological filler layer: the filling material is spread on the net layer, the filling material is sprayed thoroughly, and the biological strain is sown on the filling material for acclimatization and is adapted for a period of time;
the area ratio of the biological strains to the filler is 1: 1;
3) biological water tank layer: the biological water tank layer is arranged below the biological filler layer, biological strains in the biological filler layer fall off after decay to form a biological membrane to fall into the water tank, and the content of the filler in the water tank is more than 20 percent, so that the biological membrane can be fully contacted with the filler;
as shown in FIG. 1, organic waste gas is introduced into the system, so that the organic waste gas passes through the biological filler layer and the biological water tank layer in sequence to form clean gas to be discharged.
Example 2
A system and a method for treating organic waste gas by a biological method are as follows:
1) a spraying device: the spraying device is connected with the biological water tank layer through a water pipe, the water sprayed by the spraying device is water in the biological water tank layer, the water spraying mode is intermittent spraying, and the water is sprayed once after 0.7 hour, so that mist water drops are sprayed on the biological filler layer;
2) a biological filler layer: the method comprises a net layer, wherein filler ceramsite and volcanic rock are mixed in a ratio of 1:1, biological strains of bacillus coagulans, pseudomonas plankton and lactobacillus are spread on the net layer in a ratio of 1:1:2, the filler is sprayed thoroughly, the biological strains are sown on the filler for acclimatization, and the net layer is suitable for a period of time;
the area ratio of the biological strains to the filler is 1: 2;
3) biological water tank layer: the biological water tank layer is arranged below the biological packing layer, biological strains in the biological packing layer fall off after decay to form a biological membrane and fall into the water tank, and organic waste gas is introduced into the system so that the organic waste gas sequentially passes through the biological packing layer and the biological water tank layer to form clean gas to be discharged.
Example 3
A system and a method for treating organic waste gas by a biological method are as follows:
1) a spraying device: the spraying device is connected with the biological water tank layer through a water pipe, the water sprayed by the spraying device is water in the biological water tank layer, the water spraying mode is intermittent spraying, and the spraying is carried out once after 01h, so that mist water drops are sprayed on the biological filler layer;
2) a biological filler layer: the filling material is flatly laid on the net layer, the filling material is sprayed thoroughly, the biological strain is sown on the filling material for acclimatization, and the filling material is adapted for a period of time;
the area ratio of the biological strains to the filler is 1: 3;
3) biological water tank layer: the biological water tank layer is arranged below the biological packing layer, biological strains in the biological packing layer fall off after decay to form a biological membrane and fall into the water tank, and organic waste gas is introduced into the system so that the organic waste gas sequentially passes through the biological packing layer and the biological water tank layer to form clean gas to be discharged.
Example 4
A system and a method for treating organic waste gas by a biological method are as follows:
1) a spraying device: the spraying device is connected with the biological water tank layer through a water pipe, the water sprayed by the spraying device is water in the biological water tank layer, the water spraying mode is intermittent spraying, and the water is sprayed once after 0.8 hour, so that mist water drops are sprayed on the biological filler layer;
2) a biological filler layer: the filling material is flatly laid on the net layer, the filling material is sprayed thoroughly, the biological strain is sown on the filling material for acclimatization, and the filling material is adapted for a period of time;
the area ratio of the biological strains to the filler is 1: 4;
3) biological water tank layer: the biological water tank layer is arranged below the biological packing layer, biological strains in the biological packing layer fall off after decay to form a biological membrane and fall into the water tank, and organic waste gas is introduced into the system so that the organic waste gas sequentially passes through the biological packing layer and the biological water tank layer to form clean gas to be discharged.
Comparative example 1
As a control in example 1, the bio-filler layer was removed in comparative example 1 and the other conditions were not changed.
Comparative example 2
As a control group of example 1, the bio-filler layer of comparative example 2 was filled with only the filler without using the bio-bacterial species, and other conditions were not changed.
Comparative example 3
As a control of example 1, the bio-water tank layer of comparative example 2 contained no filler, and other conditions were not changed.
Organic waste gas collected from chemical production enterprises (total organic carbon is 1000 mg/m)3The waste gas flow is less than 50000m3H, the temperature of the exhaust gas is less than 40 ℃), after the purification treatment is carried out by adopting the purification system and the process of the above embodiment, the exhausted gas is detected, and the results are shown in the following table:
TABLE 1 exhaust gas detection (mg/m) after organic exhaust gas purification treatment3)
It can be seen from the table that the system and the process for treating organic waste gas by the biological method provided by the invention have the advantages that the discharged waste gas reaches the relevant emission standard, compared with comparative examples 1-3, the purification effect on the organic waste gas is obvious in the embodiments 1-4 provided by the invention, the removal rate of sulfur-containing malodorous substances can reach more than 95%, the removal rate of other substances can reach 70-95%, the treated gas can reach the national environmental protection standard, and the biological method provided by the invention has the advantages of rapid treatment, high efficiency and low cost.
Claims (9)
1. A system for treating organic waste gas by a biological method is characterized by comprising a spraying device, a biological filler layer and a biological water tank layer;
the biological filler layer comprises a net layer, a filler and a biological strain;
the biological water tank layer comprises a biological film, a filler and a water tank filled with water.
2. The system for treating organic waste gas as claimed in claim 1, wherein the bio-filler layer and the filler of the bio-water tank layer comprise one or more of ceramsite, vesuvianite, lightweight pottery, diatomite and trehalite.
3. The system for treating organic waste gas of claim 1, wherein the biological species of the bio-filler layer comprises one or more of bacillus, lactobacillus and pseudomonas.
4. The system for treating organic waste gas as claimed in claim 3, wherein the area ratio of the filler to the biological bacteria in the biological filler layer is (4:1) - (1: 1).
5. The system for treating organic waste gas of claim 1, wherein the spraying device, the biological filler layer and the biological water tank layer are arranged in sequence from top to bottom, and the spraying device is connected with the biological water tank layer through a water pipe.
6. A method for treating organic waste gas by a biological method is characterized by comprising the following steps: introducing organic waste gas into the system of any one of claims 1 to 5, so that the organic waste gas sequentially passes through the biological filler layer and the biological water tank layer to form clean gas to be discharged, and spraying water drops by a spraying device in the system to be sprayed on the biological filler layer.
7. The method for biologically treating organic waste gas according to claim 6, wherein the water sprayed by the spraying device is water in the biological water tank layer, and the spraying mode is intermittent spraying.
8. The method for biologically treating organic waste gas according to claim 6, wherein the bio-filler layer comprises a mesh layer, a filler and a bio-bacterial strain, the filler is laid on the mesh layer soaked with water, and the bio-bacterial strain is laid on the filler.
9. The method for treating organic waste gas by biological method according to claim 6, wherein the biological water tank layer comprises a biological film, a filler and a water tank filled with water, the biological film is a biological strain decaying in the biological filler layer, and the biological film and the filler are placed in the water tank filled with water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110090222.7A CN112892201A (en) | 2021-01-22 | 2021-01-22 | System and method for treating organic waste gas by biological method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110090222.7A CN112892201A (en) | 2021-01-22 | 2021-01-22 | System and method for treating organic waste gas by biological method |
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| CN112892201A true CN112892201A (en) | 2021-06-04 |
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| CN202110090222.7A Pending CN112892201A (en) | 2021-01-22 | 2021-01-22 | System and method for treating organic waste gas by biological method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115814584A (en) * | 2022-10-19 | 2023-03-21 | 北京工业大学 | Diatomite-based composite filler for reinforcing performance of biological trickling filter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3985886B2 (en) * | 1999-09-06 | 2007-10-03 | 株式会社荏原製作所 | Method and apparatus for treating exhaust gas containing nitrogen compounds |
| CN107158931A (en) * | 2017-07-06 | 2017-09-15 | 广西博世科环保科技股份有限公司 | Integral biological deodorizing process device and handling process |
| CN108421401A (en) * | 2018-01-30 | 2018-08-21 | 深圳双瑞环保能源科技有限公司 | A kind of biological treatment system and method for organic exhaust gas |
| CN211988004U (en) * | 2020-04-08 | 2020-11-24 | 河北铭特环保设备科技有限公司 | Organic waste gas's purification unit |
-
2021
- 2021-01-22 CN CN202110090222.7A patent/CN112892201A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3985886B2 (en) * | 1999-09-06 | 2007-10-03 | 株式会社荏原製作所 | Method and apparatus for treating exhaust gas containing nitrogen compounds |
| CN107158931A (en) * | 2017-07-06 | 2017-09-15 | 广西博世科环保科技股份有限公司 | Integral biological deodorizing process device and handling process |
| CN108421401A (en) * | 2018-01-30 | 2018-08-21 | 深圳双瑞环保能源科技有限公司 | A kind of biological treatment system and method for organic exhaust gas |
| CN211988004U (en) * | 2020-04-08 | 2020-11-24 | 河北铭特环保设备科技有限公司 | Organic waste gas's purification unit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115814584A (en) * | 2022-10-19 | 2023-03-21 | 北京工业大学 | Diatomite-based composite filler for reinforcing performance of biological trickling filter |
| CN115814584B (en) * | 2022-10-19 | 2024-06-04 | 北京工业大学 | Diatomite-based composite filler for strengthening performance of biotrickling filter |
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