CN104524966A - Spray coating waste gas biological purification composite treatment method - Google Patents
Spray coating waste gas biological purification composite treatment method Download PDFInfo
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- CN104524966A CN104524966A CN201410722698.8A CN201410722698A CN104524966A CN 104524966 A CN104524966 A CN 104524966A CN 201410722698 A CN201410722698 A CN 201410722698A CN 104524966 A CN104524966 A CN 104524966A
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- waste gas
- mud
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- nutrient solution
- spray coating
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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
Abstract
The invention discloses a spray coating waste gas biological purification composite treatment method comprising the following steps: (1) spray coating waste gas is delivered into a fiber cotton filtering device mounted with glass fiber filter cotton; (2) waste gas filtered by the glass fiber filtering device is delivered into a reactor with a filling material in a way that the waste gas enters from the bottom and leaves from the top, and is subjected to biological filtering; at a same time, the filling material is subjected to nutrient solution spraying with a flow pattern from top to bottom from the top of the reactor, such that a carbon source and other elements needed by microbe growth are provided. The method has the following advantages: with the method, paint mist and main pollutants such as toluene, xylene and non-methane hydrocarbon volatile matters produced during a spray coating process can be highly efficiently removed.
Description
Technical field
The present invention relates to technical field of environmental management, particularly one spraying waste gas combined treatment process.
Background technology
The spraying such as automotive lacquer, furniture application industry can produce a large amount of coating coating clouds in production engineering, and containing VOCs (VOCs) such as the toluene of higher concentration, dimethylbenzene and NMHCs in waste gas.
These VOCs not only produce spread effect to human body, serious threat human health, and alkene in organic compound and some arene compound, in an atmosphere, under the effect of sunlight, can also and nitrogen oxide react and form the photochemical fog of Los Angeles type or industrial photochemical fog, cause secondary pollution, ecological environment damaged.Therefore, the process for the spraying coating cloud that produces of industry and VOC seems very urgent.
At present, mainly in the majority with physico-chemical process to the treatment technology of VOC, mainly contain active carbon adsorption, Physical Absorption method, Production by Catalytic Combustion Process and membrane absorption method.In addition, biofiltration process in recent years due to it has that removal efficiency is high, operating cost is low and the advantage such as less formation secondary pollution by extensive concern.
Biofiltration process mainly utilizes high efficiency packing rapid mass transfer, the characteristic of absorption and the specific function of microorganism, makes waste gas enter filling surface rapidly, contacts with microorganism, thus by VOCs mass degradation or change into some harmless or low harmful class materials.But, utilize independent bio-filter technology to carry out process to spraying waste gas and cannot reach good removal effect.Mainly because the spraying existed in spraying waste gas not only can reduce the removal effect of biofiltration device, and abrasion and corrosion can be caused to the body of device.
Summary of the invention
The object of the invention is to the shortcoming overcoming prior art, a kind of spraying exhaust gas biological purifying combination treatment method efficiently removing the major pollutants such as coating cloud and toluene, dimethylbenzene, NMHC produced in painting process is provided.
In order to achieve the above object, the technical solution used in the present invention is:
One spraying exhaust gas biological purifying combination treatment method of the present invention, it comprises the following steps:
(1) spraying waste gas is passed into the cellucotton filter that glass fiber filter cotton is housed;
(2) sent in the mode of bottom in and top out by the waste gas after filtering through glass fiber filtration apparatus and fill Packed reactor and carry out biofiltration, the spray of nutrient solution is carried out to provide other elements beyond the carbon source needed for growth of microorganism with the type of flow from top to bottom to filler in autoreactor top simultaneously;
The preparation method of described filler comprises the following steps:
A () gets sewage disposal plant aeration tank activated sludge;
B () by mud aeration every day 6-10 hour, and adds the medicine be made up of benzene and dimethylbenzene and tames mud, described benzene, the percent by volume of dimethylbenzene are 1:1-1:1.5, and described mud and the volume ratio of medicine are 60:1-80:1; Tame, after 15-20 days, mud and high-efficiency activated carbon mixture are injected biofiltration reactor, make mud in activated carbon surface biofilm, as filler;
Described nutrient solution prescription is in grams per liter, composed of the following components:
The invention has the advantages that: (1) combines the kinds of processes technology such as filtration, biodegradation and charcoal absorption, efficiently can remove the major pollutants such as coating cloud and toluene, dimethylbenzene, NMHC produced in painting process; (2) there is good adaptability, the purified treatment of high concentration, atm number, different gaseous material can be adapted to; (3) process operation is simple to operate, is easy to safeguard, reduces expense.(4) microorganism colonization method easily realizes, and is conducive to growth of microorganism, completes the quick adsorption of gas, mass transport process, and meanwhile, microbial nutrient solution method for making is simple, with low cost, easy to operate, can provide comprehensive nutrition to microorganism.
Accompanying drawing explanation
Accompanying drawing is a kind of process chart spraying exhaust gas biological purifying combination treatment method of the present invention.
Detailed description of the invention
Describe the present invention below in conjunction with specific embodiment.
One spraying exhaust gas biological purifying combination treatment method of the present invention as shown in drawings, it comprises the following steps: spraying waste gas is passed into the cellucotton filter 1 that glass fiber filter cotton is housed by (1); (2) sent in the mode of bottom in and top out by the waste gas after filtering through glass fiber filtration apparatus and fill Packed reactor 2 and carry out biofiltration, the spray of nutrient solution 3 is carried out to provide other elements beyond the carbon source needed for growth of microorganism with the type of flow from top to bottom to filler in autoreactor top simultaneously;
The preparation method of described filler comprises the following steps:
A () gets sewage disposal plant aeration tank activated sludge;
B () by mud aeration every day 6-10 hour, and adds the medicine be made up of benzene and dimethylbenzene and tames mud, described benzene, the percent by volume of dimethylbenzene are 1:1-1:1.5, and described mud and the volume ratio of medicine are 60:1-80:1; Tame, after 15-20 days, mud and high-efficiency activated carbon mixture are injected biofiltration reactor, make mud in activated carbon surface biofilm, as filler;
Described nutrient solution prescription is in grams per liter, composed of the following components:
The preparation method of described nutrient solution is: mixed by nutrient solution prescription.
The device realizing the inventive method can comprise the cellucotton filter 1 that glass fiber filter cotton is housed, have spraying exhaust gas inlet in the bottom of described cellucotton filter 1 and have spraying waste gas outlet on the top of cellucotton filter 1, described spraying waste gas outlet is connected with the import filling Packed reactor by waste gas pipeline, the import of described reactor is arranged in the reactor shell of filler bottom of reactor, the reactor shell on the filler top of described reactor has the outlet of process gas, in described reactor, filler top is provided with spray equipment, described spray equipment is connected with the storage tank that nutrient solution 3 is housed by the spray piping that measuring pump is housed, the end face and bottom surface of described filler are respectively arranged with water distributing plate and supporting layer, be respectively used to water distribution uniformity and support filler.
Embodiment 1
(1) spraying waste gas is passed into the cellucotton filter that glass fiber filter cotton is housed; (2) sent in the mode of bottom in and top out by the waste gas after filtering through glass fiber filtration apparatus and fill Packed reactor and carry out biofiltration, the spray of nutrient solution 3 is carried out to provide other elements beyond the carbon source needed for growth of microorganism with the type of flow from top to bottom to filler in autoreactor top simultaneously;
The preparation method of described filler comprises the following steps:
A () gets sewage disposal plant aeration tank activated sludge;
B () by mud aeration every day 6 hours, and adds the medicine be made up of benzene and dimethylbenzene and tames mud, described benzene, the percent by volume of dimethylbenzene are 1:1, and described mud and the volume ratio of medicine are 80:1; Tame, after 17 days, mud and high-efficiency activated carbon mixture are injected biofiltration reactor, make mud in activated carbon surface biofilm, as filler;
Described nutrient solution prescription is in grams per liter, composed of the following components:
The preparation method of described nutrient solution is: mixed by nutrient solution prescription.
Adopt this method, process certain paint spray booth waste gas.Average exhaust amount is 14000m
3/ h, in exhaust, TVOC concentration is 500-650mg/m
3, after adopting cellucotton filtration-biofiltration combined treatment process to process, exit TVOC concentration is 50-75mg/m
3, clearance reaches more than 85%.
Embodiment 2
(1) spraying waste gas is passed into the cellucotton filter that glass fiber filter cotton is housed; (2) sent in the mode of bottom in and top out by the waste gas after filtering through glass fiber filtration apparatus and fill Packed reactor and carry out biofiltration, the spray of nutrient solution 3 is carried out to provide other elements beyond the carbon source needed for growth of microorganism with the type of flow from top to bottom to filler in autoreactor top simultaneously;
The preparation method of described filler comprises the following steps:
A () gets sewage disposal plant aeration tank activated sludge;
B () by mud aeration every day 8 hours, and adds the medicine be made up of benzene and dimethylbenzene and tames mud, described benzene, the percent by volume of dimethylbenzene are 1:1.5, and described mud and the volume ratio of medicine are 60:1; Tame, after 15 days, mud and high-efficiency activated carbon mixture are injected biofiltration reactor, make mud in activated carbon surface biofilm, as filler;
Described nutrient solution prescription is in grams per liter, composed of the following components:
The preparation method of described nutrient solution is: mixed by nutrient solution prescription.
Adopt this method: process air quantity is 16000m
3certain painting workshop waste gas of/h, TVOC concentration is 350-450mg/m
3, after the process of cellucotton filtration-biofiltration combined treatment process, TVOC concentration is about 32mg/m
3, clearance reaches 91%-93%.
Embodiment 3
(1) spraying waste gas is passed into the cellucotton filter that glass fiber filter cotton is housed; (2) sent in the mode of bottom in and top out by the waste gas after filtering through glass fiber filtration apparatus and fill Packed reactor and carry out biofiltration, the spray of nutrient solution 3 is carried out to provide other elements beyond the carbon source needed for growth of microorganism with the type of flow from top to bottom to filler in autoreactor top simultaneously;
The preparation method of described filler comprises the following steps:
A () gets sewage disposal plant aeration tank activated sludge;
B () by mud aeration every day 10 hours, and adds the medicine be made up of benzene and dimethylbenzene and tames mud, described benzene, the percent by volume of dimethylbenzene are 1:1.05, and described mud and the volume ratio of medicine are 72:1; Tame, after 20 days, mud and high-efficiency activated carbon mixture are injected biofiltration reactor, make mud in activated carbon surface biofilm, as filler;
Described nutrient solution prescription is in grams per liter, composed of the following components:
The preparation method of described nutrient solution is: mixed by nutrient solution prescription.
Adopt this method: the waste gas processing certain timber processing paint shop.It is 40000m that this workshop produces waste gas air quantity
3/ h, TVOC concentration is 500-650mg/m
3, after the process of cellucotton filtration-biofiltration combined treatment process, exit TVOC concentration is 35-80mg/m
3, TVOC clearance reaches 85%-95%.
Claims (1)
1. spray an exhaust gas biological purifying combination treatment method, it is characterized in that, it comprises the following steps:
(1) spraying waste gas is passed into the cellucotton filter that glass fiber filter cotton is housed;
(2) sent in the mode of bottom in and top out by the waste gas after filtering through glass fiber filtration apparatus and fill Packed reactor and carry out biofiltration, the spray of nutrient solution is carried out to provide other elements beyond the carbon source needed for growth of microorganism with the type of flow from top to bottom to filler in autoreactor top simultaneously;
The preparation method of described filler comprises the following steps:
A () gets sewage disposal plant aeration tank activated sludge;
B () by mud aeration every day 6-10 hour, and adds the medicine be made up of benzene and dimethylbenzene and tames mud, described benzene, the percent by volume of dimethylbenzene are 1:1-1:1.5, and described mud and the volume ratio of medicine are 60:1-80:1; Tame, after 15-20 days, mud and high-efficiency activated carbon mixture are injected biofiltration reactor, make mud in activated carbon surface biofilm, as filler;
Described nutrient solution prescription is in grams per liter, composed of the following components:
。
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| CN201410722698.8A CN104524966B (en) | 2014-12-02 | 2014-12-02 | A kind of spraying exhaust gas biological purifying combination treatment method |
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| CN201410722698.8A CN104524966B (en) | 2014-12-02 | 2014-12-02 | A kind of spraying exhaust gas biological purifying combination treatment method |
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| CN104524966A true CN104524966A (en) | 2015-04-22 |
| CN104524966B CN104524966B (en) | 2016-08-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104826483A (en) * | 2015-05-25 | 2015-08-12 | 永康市禄祥环保科技有限公司 | Paint spraying waste gas and organic waste gas biological purification method |
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| CN101264421A (en) * | 2008-03-20 | 2008-09-17 | 湖南大学 | Biological filtering device for treating toluene gas |
| JP2009106805A (en) * | 2007-10-26 | 2009-05-21 | Hitachi Plant Technologies Ltd | Voc gas treatment method |
| CN202569894U (en) * | 2012-06-12 | 2012-12-05 | 中国国际海运集装箱(集团)股份有限公司 | Painting organic waste gas recovery processing device |
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2014
- 2014-12-02 CN CN201410722698.8A patent/CN104524966B/en active Active
Patent Citations (7)
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| US20040219657A1 (en) * | 2003-04-29 | 2004-11-04 | National Chiao Tung University | System and process for treating waste gas employing bio-treatment technology |
| CN1745883A (en) * | 2004-09-11 | 2006-03-15 | 中国石油化工股份有限公司 | Purification for stink and organic waste gas |
| CN101058055A (en) * | 2007-06-01 | 2007-10-24 | 哈尔滨工业大学 | Biologically deodorizing method |
| JP2009106805A (en) * | 2007-10-26 | 2009-05-21 | Hitachi Plant Technologies Ltd | Voc gas treatment method |
| CN101264421A (en) * | 2008-03-20 | 2008-09-17 | 湖南大学 | Biological filtering device for treating toluene gas |
| CN101259367A (en) * | 2008-04-17 | 2008-09-10 | 东北电力大学 | Technique and device for simultaneously removing malodor of multiple gas mixture |
| CN202569894U (en) * | 2012-06-12 | 2012-12-05 | 中国国际海运集装箱(集团)股份有限公司 | Painting organic waste gas recovery processing device |
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| 孔鑫等: "温度对生物过滤塔填料层含水率和运行性能的影响", 《环境科学学报》 * |
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| CN104826483A (en) * | 2015-05-25 | 2015-08-12 | 永康市禄祥环保科技有限公司 | Paint spraying waste gas and organic waste gas biological purification method |
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| CN104524966B (en) | 2016-08-24 |
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