CN1194796C - Biologic cleaning method for low-concentration organic waste gas - Google Patents
Biologic cleaning method for low-concentration organic waste gas Download PDFInfo
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- CN1194796C CN1194796C CNB011398337A CN01139833A CN1194796C CN 1194796 C CN1194796 C CN 1194796C CN B011398337 A CNB011398337 A CN B011398337A CN 01139833 A CN01139833 A CN 01139833A CN 1194796 C CN1194796 C CN 1194796C
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000007789 gas Substances 0.000 title abstract description 27
- 239000010815 organic waste Substances 0.000 title abstract description 8
- 238000004140 cleaning Methods 0.000 title description 3
- 244000005700 microbiome Species 0.000 claims abstract description 25
- 238000001914 filtration Methods 0.000 claims abstract description 15
- 239000002912 waste gas Substances 0.000 claims abstract description 11
- 238000000746 purification Methods 0.000 claims abstract description 7
- 239000007921 spray Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 10
- 239000005416 organic matter Substances 0.000 claims description 10
- 239000000706 filtrate Substances 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 241000894006 Bacteria Species 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 150000002894 organic compounds Chemical class 0.000 claims description 5
- 241000186046 Actinomyces Species 0.000 claims description 3
- 241000193830 Bacillus <bacterium> Species 0.000 claims description 2
- 239000004215 Carbon black (E152) Substances 0.000 claims description 2
- 235000013162 Cocos nucifera Nutrition 0.000 claims description 2
- 244000060011 Cocos nucifera Species 0.000 claims description 2
- 230000002411 adverse Effects 0.000 claims description 2
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 claims description 2
- 150000004945 aromatic hydrocarbons Chemical group 0.000 claims description 2
- -1 halogenated aryl hydrocarbon Chemical class 0.000 claims description 2
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 239000001569 carbon dioxide Substances 0.000 abstract description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 6
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000005507 spraying Methods 0.000 abstract 2
- 235000015097 nutrients Nutrition 0.000 description 12
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 230000000813 microbial effect Effects 0.000 description 5
- 238000003672 processing method Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 241000282326 Felis catus Species 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
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- 230000007613 environmental effect Effects 0.000 description 2
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- 229910052698 phosphorus Inorganic materials 0.000 description 2
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- 102000004169 proteins and genes Human genes 0.000 description 2
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- 230000009471 action Effects 0.000 description 1
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- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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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- Treating Waste Gases (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The present invention discloses a biological purification treating method for organic waste gas, which comprises the following steps that the waste gas is added into an organic filtering tower by the way that the flow direction of the waste gas is parallel to the spraying direction or is opposite to the spraying direction, organic matters in the waste gas are captured by microorganisms to be degraded into carbon dioxide and water, and the purified gas is discharged into the atmospheric air. The present invention has the advantages of simple technology, convenient operation, high removing rate and no secondary pollution.
Description
Technical field
The present invention relates to the biological cleaning processing method of organic compounds.More particularly, the present invention relates to the biological cleaning processing method of the organic compounds of low-concentration organic waste gas such as aromatic hydrocarbon (benzene,toluene,xylene), aliphatic hydrocarbon, halogenated aryl hydrocarbon etc., particularly relate to by low-concentration organic waste gas and contact the waste gas processing method that under action of microorganisms, is purified with filming filter material.
Background technology
In recent years, human consciousness to environmental protection strengthens day by day, and the improvement of Organic Waste Gas Pollution has been proposed stricter requirement.In the past, people have proposed the processing method of some organic exhaust gas through research chronically.Conclusion is got up, and mainly contains (catalysis) firing method, absorption method and absorption process.The principal character of these methods briefly is listed in the table below.
Table 1 organic compounds processing method and performance comparison sheet
| Method | (catalysis) firing method | Absorption method | Absorption process | |
| High concentration | Treatment effeciency | High | In | High |
| Expense | High | In | High | |
| Low concentration | Treatment effeciency | High | High | In |
| Expense | High | High | High | |
| End product | CO 2、H 2O | The desorb organic matter reclaims or further handles | The desorb organic matter reclaims or further handles | |
| The scope of application | High concentration | Low concentration | High concentration | |
| Other | Incomplete combustion produces poisonous intermediate product | The operating cost height | When operating pressure hanged down, absorptivity was very low, needed to reclaim absorbent solution | |
The domestic microbial film purifying organic waste gas technology of utilizing still is in conceptual phase, and the end is seen the report of applying for a patent.The inventor under certain conditions, will bite organic microorganism and be fixed on the filtrate through discovering chronically, form microbial film, make organic gas pass through this microbial film then, be degraded to carbon dioxide and water, gas is purified, thereby has finished the present invention.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of method of hanging biomembranous filtrate degradation organic waste gas of utilizing, particularly utilize the microorganism of biofilm, organic matter in the waste gas is caught by microorganism be degraded to carbon dioxide and water, the method that gas is purified.Method of the present invention, technology is simple, and is easy to operate, clearance height, non-secondary pollution.
In the present invention, below 2000PPm, all the other are oxygen, nitrogen etc. to organic total concentration usually, and temperature is an environment temperature, and pressure is environmental pressure.
In the present invention, employed biofilter material carries microorganism and is held in filter material surface and forms, active carbon is as a kind of carrier, not restriction especially, it is commercially available active carbon, also can be by the product of raw materials such as coal, walnut shell, cocoanut shell, timber, aggregate or natural organic matter with the known method preparation.
Employed microorganism is not particularly limited among the present invention, based on bacterium such as bacillus, shortly plant bacterium, mould, actinomyces etc.
In the present invention, employed spray liquid also will provide required nitrogen, phosphorus, trace element and moisture to microorganism except the humidity of keeping biofilter material.A feature of the present invention is to use sewage treatment unit water outlet and/or the water outlet of petrochemical industry wastewater treatment equipment and/or activated sludge as spray liquid, and the required nitrogen of microorganism, phosphorus, trace element, moisture and bacterium source are provided.The table general composed as follows of these treating apparatus water outlets:
Table 2 is handled water water quality and is formed (mg/l)
| Nutrients | pH | Ammonia nitrogen | PO 4 2-(in P) |
| Concentration | 6.5～7.5 | 15 | 1 |
If utilize the nutrient solution of human configuration, but according to the form below is formed and recipe configuration.
Table 3 nutrient composition is formed (mg/l)
| Nutrients | K 2PO 4 | Na 2HPO 4 | KH 2PO 4 | NH 4Cl | FeCl 3 | MnSO 4 | MgSO 4 | CaCl 2 |
| Concentration | 28.5 | 33.4 | 8.5 | 5.0 | 0.25 | 39.9 | 46.13 | 36.4 |
In the present invention, use asynchronous biofilm legal system to be equipped with biofilter material.The activated sludge that is about in the sewage-treatment plant is inserted in the culture tank, adds nutriment and water, cultivates, after the physics of mud and biochemical property reach required value, in groove, add organic solution, begin domestication, after domestication reaches requirement, active carbon is inserted after solution fully contacts in culture tank and the groove, pull out and leave standstill, when treating that dripless flows down, with its filter tower of packing into, feeding contains organic gas, and to adjust pH be 7, adds nutrient solution and begins biofilm.After carrying out the definite nothing gas leakage of airtight test, air inlet continuously regularly adds nutrient solution, guarantees biomembranous growth, finishes biomembranous preparation.
Below, in conjunction with the accompanying drawings the present invention is explained in more detail.These descriptions only are to be used for illustrative purposes, do not limit the invention, and scope of the present invention proposes in the appended claims.
Description of drawings
Fig. 1 shows the single-stage or the multi-stage spray system of the air inlet in parallel of implementing biofilter material purification method of the present invention.
Fig. 2 shows some air inlets of implementing biofilter material purification method of the present invention, the single-stage of gas-liquid counter current or multi-stage spray system.
Fig. 3 shows some air inlets of implementing biofilter material purification method of the present invention, the single-stage of gas and liquid flowing or multi-stage spray system.
Fig. 4 shows a kind of biofiltration filter tower with humidifier.
The specific embodiment
As shown in Figure 1, organic exhaust gas direction parallel connection as shown by arrows enters single-stage and/or multi-stage biological filter tower, organic matter is wherein caught degraded by microorganism, and nutrient solution parallel connection as shown sprays on the biofilter material, supplies with micro-nutrients and keeps the condition that microorganism survives.
As everyone knows, biological filtering tower combined working not only will provide the nutrients that needs to microorganism, but also will provide suitable living environment for microorganism, as temperature, oxygen and pH value etc. in running.Therefore, in the biological filtering tower combined working running, major control pH value, temperature and humidity.
The humidity of biological filtering tower combined working is to keep by spray liquid, and usually, the relative humidity of filter tower is controlled at 40-60%.The humidity of filter tower was greater than 60% o'clock, moisture is full of the filtrate hole, the filtrate specific area is reduced, shortened the time of staying of gas, oxygen and organic transmission capacity have been reduced, increase the area of anaerobic district and anaerobic zone, caused the metabolic rate of organic matter such as benzene series thing to descend, also caused the increase and the nutraceutical loss of filter tower resistance simultaneously; When the humidity of filter tower less than 40% the time, make the protein denaturation in the microbial body, the active reduction slows down even stops metabolic activity, directly influences organic utilization rate.Simultaneously, cause that the filtrate drying is dry and cracked, cause the gas short-circuit flow, organic purification efficiency is reduced.
The temperature of biological filtering tower combined working is controlled at 20-40 ℃ usually for the temperature of suitable growth of microorganism.When temperature is lower than 20 ℃, stop the synthetic of microprotein, microorganism is in resting state, and growth metabolism is slow.When temperature is higher than 40 ℃, cause the deactivation of microorganism key cells organ and solidifying of protein, cause microbial death.
The pH value of filtrate liquid and/or solid phase is the key factor of decision organic matter removal in the biological filtering tower combined working, and its variation influences activation of microorganism consumingly.Observe microorganism and find that mutually the microorganism in the filter tower is mainly based on bacterium, actinomyces, their optimal pH values are 7～9, and therefore, the pH value of biological filtering tower combined working generally is controlled to be 7.5-8.5, preferred about 8.This can control as adding buffer solution by method well known in the art.
Fig. 2 shows another spray system of the inventive method.Organic exhaust gas a bit enters in the tower from the filter tower bottom, the mode that becomes adverse current with nutrient solution from the nutrient solution circulating slot is by single-stage and/or multi-stage biofilm-active-carbon bed, organic matter is wherein caught by microorganism and is degraded into carbon dioxide and water, and purified gas is discharged from cat head.
Fig. 3 shows gas and liquid flowing by single-stage and/or multi-stage spray system.In this system, organic compounds and from the nutrient solution of nutrient solution circulating slot in opposite directions and stream enter in the filter tower from the top of filter tower, pass single-stage and/or multi-stage biofilm-active-carbon bed, organic matter is wherein caught by microorganism and is degraded into carbon dioxide and water, and purified gas is discharged at the bottom of tower.
Fig. 4 shows the single-stage and/or the multi-stage spray system of band humidifier.One humidifier is set outside this spray system, and organic exhaust gas is introduced into humidifier, enters single-stage and/or multi-stage biofilm-active carbon filter bed again, and gas is caught degraded by microorganism in process of flowing, and Purge gas is discharged from cat head.
The total concentration of " triphen " of method of the present invention in waste gas is 2000mg/m
3, the void tower time of staying, organic removal rate was more than 95%, the organic concentration＜60mg/m in the Purge gas when being t＞20 second
3, end product carbon dioxide and water, clearance height, non-secondary pollution.
Claims (6)
1, a kind of biological purification method of organic compounds is characterized in that: this method makes waste gas flow through biofilter material in the biological filtering tower combined working, and biodegradable organic is wherein caught by microorganism and is decomposed into harmless material; Described biofilter material is for attached to natural material such as peach shell, cocoanut shell, sawdust, cow dung or wood chip or based on the biomembrane of the porous material surface of active carbon; Described microorganism is that bacillus, weak point are planted one or more in bacterium, mould, the actinomyces; Described organic matter is aromatic hydrocarbon, aliphatic hydrocarbon or halogenated aryl hydrocarbon; The relative humidity of described biological filtering tower combined working is 40-60%; The temperature of described biological filtering tower combined working is 20-40 ℃; The pH value of filtrate liquid and/or solid phase is 7.5-8.5 in the described biological filtering tower combined working; Described spray liquid provides nutrition for microorganism, and spray liquid is formed: K
2PO
4: 28.5mg/l, Na
2HPO
4: 33.4mg/l, KH
2PO
4: 8.5mg/l, NH
4Cl:5.0mg/l FeCl
3: 0.25mg/l, MnSO
4: 39.9mg/l, MgSO
4: 46.13mg/l, CaCl
2: 36.4mg/l; Described organic total concentration is usually below 2000PPm.
2, in accordance with the method for claim 1, it is characterized in that: described waste gas is to pass through single-stage and/or multi-stage biological filtrate with the direction that becomes adverse current with the spray direction of spray liquid.
3, in accordance with the method for claim 1, it is characterized in that: described waste gas be with the direction of the spray direction Cheng Bingliu of spray liquid by single-stage and/or multi-stage biological filtrate.
4, in accordance with the method for claim 1, it is characterized in that: described waste gas is in the bottom of biological filtering tower combined working or the top adds biological filtering tower combined working.
5, in accordance with the method for claim 1, it is characterized in that: described biological filtering tower combined working is multistage.
6, in accordance with the method for claim 1, it is characterized in that: described waste gas feeds the humidifier humidification earlier before adding biological filtering tower combined working.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011398337A CN1194796C (en) | 2001-11-30 | 2001-11-30 | Biologic cleaning method for low-concentration organic waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011398337A CN1194796C (en) | 2001-11-30 | 2001-11-30 | Biologic cleaning method for low-concentration organic waste gas |
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| Publication Number | Publication Date |
|---|---|
| CN1365847A CN1365847A (en) | 2002-08-28 |
| CN1194796C true CN1194796C (en) | 2005-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011398337A Expired - Fee Related CN1194796C (en) | 2001-11-30 | 2001-11-30 | Biologic cleaning method for low-concentration organic waste gas |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1296121C (en) * | 2004-05-20 | 2007-01-24 | 中国科学院生态环境研究中心 | Waste gas treatment equipment of current propelling combined biological reactor |
| CN100351367C (en) * | 2004-11-19 | 2007-11-28 | 云南大学 | Serial production for industrial waste gas purifying bacterium |
| CN1326595C (en) * | 2005-10-19 | 2007-07-18 | 哈尔滨工业大学 | Integrated method for treating indoor fit-up harmful gas by baking, air exhausting and biological treatment |
| CN101293179B (en) * | 2008-05-16 | 2011-01-12 | 应棋资 | Method for purifying organic matter waste gas by using waste timber biological mix liquid |
| CN101537311B (en) * | 2009-04-27 | 2011-03-16 | 广州环发环保工程有限公司 | Biological purification method for light-concentration volatile mixed organic exhaust gas |
| CN103071384B (en) * | 2013-01-23 | 2015-01-21 | 苏州苏净环保工程有限公司 | Method for rapidly starting hybrid biological reactor for waste gas treatment |
| CN104338437B (en) * | 2013-08-08 | 2016-05-04 | 深圳市正源清环境科技有限公司 | A kind of deodoration system |
| CN108970387B (en) * | 2018-07-11 | 2021-03-30 | 水云天（天津）生物科技发展有限公司 | Application of biological additive in promotion of VOCS degradation |
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2001
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