CN104524967B - A kind of method of organic exhaust gas of carrying out a biological disposal upon - Google Patents

A kind of method of organic exhaust gas of carrying out a biological disposal upon Download PDF

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Publication number
CN104524967B
CN104524967B CN201410817507.6A CN201410817507A CN104524967B CN 104524967 B CN104524967 B CN 104524967B CN 201410817507 A CN201410817507 A CN 201410817507A CN 104524967 B CN104524967 B CN 104524967B
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China
Prior art keywords
surge tank
phase mixtures
trickled
packing layer
waste gas
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CN201410817507.6A
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CN104524967A (en
Inventor
姜楠
张文娟
刘金泉
姜安平
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Beijing Sound Environmental Engineering Co Ltd
Beijing Epure International Water Co Ltd
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Beijing Sound Environmental Engineering Co Ltd
Beijing Epure International Water Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

A kind of method that the invention discloses organic exhaust gas of carrying out a biological disposal upon, belongs to exhaust-gas treatment field, including: connect the blowing device introducing handled waste gas with trickled-bed biofilter, and connect surge tank as processing equipment through circulating pump;The bacterium solution prepared is mixed with nutritional solution, add 1000mg/L methyl-silicone oil and form two-phase mixtures liquid, two-phase mixtures liquid is put in surge tank, under agitation two-phase mixtures adsorbent is sprayed in trickled-bed biofilter, in making two-phase mixtures adsorbent uniformly flow through trickled-bed biofilter, packing layer instills reserve liquid layer again through dynamic as adsorbent from flowing back to surge tank formation two-phase mixtures liquid stream, start mutually to flow back to after surge tank forms circulation, to close surge tank when two-phase mixtures liquid stream is dynamic;Opening blowing device, be passed through waste gas in trickled-bed biofilter, keep two-phase mixtures liquid stream to move and circulate mutually, regularly Additional nutrient solution, after 5~7 days, biofilm completes, and circular treatment brings pollutant in waste gas into biomembrane, gas discharging after process.

Description

A kind of method of organic exhaust gas of carrying out a biological disposal upon
Technical field
The present invention relates to waste gas odor purification process field, a kind of method particularly relating to organic exhaust gas of carrying out a biological disposal upon.
Background technology
In recent years, environmental problem gets more and more people's extensive concerning, and air pollution just drastically influence the production life of people's every day Live.Paying close attention to more PM2.5 and nitrogen oxides except people in terms of air pollution, volatilizable Organic substance also accounts in pollution There is very important component.This kind of substance classes is various and complicated, part has relatively high toxicity.The most volatilizable organic Source is the widest, and rubbish factory, water factory, chemical plant all have the organic exhaust gas of dissimilar variable concentrations to discharge.If by this Material is untreated a bit is directly discharged into environmental system, will serious pollution of ecological environment and threat health.
In present stage, air cleaning approach can be divided mainly into physical cleaning, chemical cleaning method and biological cleaning.Wherein bioanalysis is clean Change is a kind of new waste gas pollution control and treatment technology that recent decades grows up, and its maximum feature is that operating cost is low, non-secondary pollution, It is especially suitable for the polluter of low concentration Wind Volume is efficiently treated through.Its principle is that utilization microorganism after domestication will Odorant is decomposed into carbon dioxide and water, or other easy regenerant, and reaches the purpose of air cleaning.Microorganism is in oxidation During decomposing pollutant matter, pollutant also can be changed into the nutrient of self simultaneously, microorganism is produced cell, Continue breeding.
In numerous biological treatments, bio-trickling is a kind of energy-efficient waste gas treatment process, its development speed quickly, Engineer applied number is increasing the most year by year.Bio-trickling is typically by spraying layer, packing layer, reservoir bed, bacterium solution tank, water Pump, ventilation installation's composition.Air-flow containing dusty gas sends into packing layer, the poisonous and harmful component in air-flow by aerator Absorbed by the moisture film on packing layer, and then be passed on packing layer the biomembrane of attachment, finally by microorganism in biomembrane Decomposed.And current are evacuated to spraying layer from reservoir bed by water pump, maintain the stable existence of moisture film moistening on packing layer, keep Biomembrane activity on filler, and the microbial metabolic products being enriched with on it is taken out of.The most high efficiency by pollutant absorption Remove, reduce windage and pressure drop in packing layer simultaneously, reduce blowing device power thus reach the purpose of energy-saving and emission-reduction. But, due to the nonpolar nature of water itself, the moisture film on packing layer tend not to effectively absorb have nonpolar volatilizable Organic substance.Although so traditional biological drip filter can efficient inorganic substances such as clearance ammonia, hydrogen sulfide, to organic pollution Clearance the most relatively low.For overcoming this inherent defect, can the flowing that form moisture film on filler be changed into biological lazy from water Property the mixture of low pole material and water, the most both can efficiently organic pollution materials have been brought in biomembrane from gas phase adsorption, The most do not increase microorganism burden in system, be finally reached cost-effective, to improve treatment effeciency optimum.
Existing a kind of Novel bio-trickling filter (application publication number CN202006083 U), the present invention relates to a kind of novel life Thing drips filter tower structure, and this design includes: uses inorganic material and the mixed fillers of organic material composition, uses in the air inlet of stage casing The segment processing structure given vent to anger in lower two ends.The advantage of two kinds of fillers has been merged in this design both provided Institute of Micro-biology in filler Need nutrient, avoid again packing layer blocking to increase pressure drop.Owing to using segmentation gas distribution structure, packing pressure drop is dropped further Low so that bio-trickling filter can do higher, reduce floor space and running cost.But this method makes to drip filter Tower main body becomes complicated, increases its construction cost and maintenance difficulties.
The existing another kind of bio-trickling device processing volatile organic waste gas and method (CN1994533A), the present invention is open A kind of cross-flow processes the bio-trickling mode of organic exhaust gas, and this system uses horizontal air inlet, longitudinally dropping nutritional solution so that useless Gas and nutritional solution use less occupation of land while being sufficiently mixed.This system pressure drop is the lowest, and operation cost is little, but wrong Drip filter easily causes humidity on flow area and becomes Gradient distribution, and the flora caused on cross section after running a period of time is with pressure drop also Distribution gradient, ultimately causes short stream, reduces trickling treatment effeciency.
Summary of the invention
Based on the problem existing for above-mentioned prior art, the present invention provides a kind of method of organic exhaust gas of carrying out a biological disposal upon, and can not be subject to In waste gas, pollutant polarity limits, it is possible to organic and inorganic pollution in low cost, high efficiency process waste gas.
For solving above-mentioned technical problem, the present invention provides a kind of method of organic exhaust gas of carrying out a biological disposal upon, including:
Connect the blowing device introducing handled waste gas with trickled-bed biofilter, and connect surge tank as place through circulating pump Reason equipment;
The bacterium solution prepared is mixed with nutritional solution, is added thereto to 1000mg/L methyl-silicone oil and forms two-phase mixtures liquid, by described Two-phase mixtures liquid is put in described surge tank, and described two-phase mixtures adsorbent sprays bio-trickling reaction under continuous stirring In device, the packing layer making described two-phase mixtures adsorbent uniformly flow through in described trickled-bed biofilter instills reserve liquid layer again through certainly Flow back to described surge tank formation two-phase mixtures liquid stream dynamic as adsorbent, start mutually to flow back to described delaying when two-phase mixtures liquid stream is dynamic After rushing tank formation circulation, close described surge tank;
Open blowing device, in described trickled-bed biofilter, be passed through waste gas, keep two-phase mixtures liquid stream to move and circulate mutually, fixed Time Additional nutrient solution, after 5~7 days, biofilm completes, and circular treatment brings pollutant in waste gas into biomembrane, after process outside gas Row.
In said method, the filler of the packing layer in described trickled-bed biofilter uses 1~3cm light ceramic, packing layer chi Very little for high diameter group equal to 2:1, packing layer upper end sets air vent, and exhaust ports is provided with silk screen Despumation device, packing layer lower end For air inlet, the trickled-bed biofilter of packing layer bottom is interior is liquid storage district.
In said method, the volume of described surge tank is the 1/20 of trickled-bed biofilter, and surge tank entrance is that tangential eddy current enters Material, is made the dynamic one-tenth swirl flow in surge tank of two-phase mixtures liquid stream of entrance, is sprayed by described circulating pump after being sufficiently mixed In described trickled-bed biofilter, packing layer top realizes circulation.
In said method, described bacterium solution prepares in the following manner: the activated sludge of municipal sewage plant biochemistry pool aerobic section Mix with the compost in district of becoming thoroughly decomposed after composting plant, after adding water to 20 times of original volume wherein, add methanol 500mg/L, phosphoric acid Potassium dihydrogen 500mg/L, potassium phosphate,monobasic 500mg/L, ammonium chloride 500mg/L, sodium sulfide 500mg/L, aeration is mistake after seven days Filter and continue aeration after wherein adding 1000mg/L methanol after supernatant and obtain for seven days.
In said method, consisting of of described nutritional solution: methanol 100mg/L, potassium dihydrogen phosphate 100mg/L, phosphoric acid one hydrogen Potassium 100mg/L, ammonium chloride 50mg/L, sodium sulfide 50mg/L;
It is the most weekly that nutritional solution supplements the cycle, and additional amount is till reaching described surge tank working water level.
The invention have the benefit that employing two-phase mixtures liquid stream is dynamic mutually as dripping filter equipment adsorbent, improve conventional biology Drip the filter equipment reduction process efficiency to organic substance, make the more broad-spectrum high efficacy low energy consumption of bio-trickling technique.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, in describing embodiment below, required use is attached Figure is briefly described, it should be apparent that, the accompanying drawing in describing below is only some embodiments of the present invention, for ability From the point of view of the those of ordinary skill in territory, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings attached Figure.
The processing equipment schematic diagram that Fig. 1 provides for the embodiment of the present invention.
Detailed description of the invention
Below the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only It is only a part of embodiment of the present invention rather than whole embodiments.Based on embodiments of the invention, ordinary skill The every other embodiment that personnel are obtained under not making creative work premise, broadly falls into protection scope of the present invention.
The method of the biological treatment organic exhaust gas that the embodiment of the present invention provides, uses and drips filtering technology, specific as follows:
(1) use following structural device as processing equipment, as it is shown in figure 1, include:
It is made up of blowing device, circulating pump, trickled-bed biofilter and surge tank;Packing layer it is provided with in trickled-bed biofilter, The filler of packing layer uses 1-3cm light ceramic, and packing layer is the highest: diameter=2:1, and packing layer upper end sets air vent, Built-in silk screen foam removal gas, prevents the flowing air-flow that accompanies from taking out of.Packing layer lower end is air inlet, and pending waste gas is by blowing device Injecting reactor.Packing layer bottom is liquid storage district, and side opening makes flowing flow under the influence of gravity into surge tank, surge tank mutually Volume is reactor 1/20, entrance use tangential eddy current feeding manner, make the flowing of entrance become whirlpool in surge tank Flowing, sprays packing layer top by circulating pump after being sufficiently mixed again, it is achieved circulation.
(2) spawn culture:
The strain of bacterium solution used by the present embodiment is to obtain from activated sludge with compost, and concrete bacterium solution manufacture method is as follows: by city The activated sludge of political affairs sewage treatment plant biochemistry pool aerobic section mixes with the compost in district of becoming thoroughly decomposed after composting plant, adds water to original wherein Methanol 500mg/L, potassium dihydrogen phosphate 500mg/L, potassium phosphate,monobasic 500mg/L, ammonium chloride is added after 20 times of volume 500mg/L, sodium sulfide 500mg/L, aeration seven days, filters afterwards and continues after wherein adding 1000mg/L methanol after supernatant Aeration seven days, i.e. prepares bacterium solution.Using this bacterium solution to compare and use the mode cultivating special type bacterium, cost is lower, and industry is practical Property is higher.
(3) biofilm
The bacterium solution prepared is mixed with nutritional solution, is added thereto to 1000mg/L methyl-silicone oil and puts in surge tank, persistently stirring Mix and lower mixed liquor is sprayed in trickled-bed biofilter so that it is uniformly flow through packing layer and instill reserve liquid layer and flow back to surge tank again. After flowing starts to flow back to surge tank formation circulation mutually, surge tank is closed.Open blowing device, to trickled-bed biofilter In be passed through waste gas, keep flowing to circulate mutually, regularly Additional nutrient solution, after 5-7 days, biofilm completes, and the most i.e. may utilize this and sets Waste gas is processed by standby circulation.
The method of the present invention, owing to using two-phase mixtures liquid stream dynamic mutually as dripping filter equipment adsorbent, improves the most biological dripping The filter equipment reduction process efficiency to organic substance, this bio-trickling processing method more broad-spectrum high efficacy low energy consumption;
And, two-phase mixtures liquid stream is dynamic uses tangential vortex-like fashion to be back to surge tank mutually, and flowing is maintained at agitated conditions mutually, Prevent two phase stratification from causing treatment effeciency to decline.
Meanwhile, present device adds what silk screen Despumation device was less easily entrained by with interception at the air vent of trickled-bed biofilter Drop makes its regression system, reduces flowing and is lost mutually, reduces operation maintenance expenditure.
The method of the present invention is filtered an adsorbent by polar solvent and weak polar solvent being mixed use as being dripped, can efficiently by All kinds of polluters in waste gas are brought in biomembrane, it is achieved the exhaust-gas treatment ability of high-efficiency broad spectrum, to TVOC, NH3、H2S Process load be respectively 42ppmv/ (m3×h)、4.3g/(m3×h)、10.3g/(m3× h), the pollution components that can remove Wider, there is higher practicality.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, and appoints How those familiar with the art is in the technical scope of present disclosure, the change that can readily occur in or replacement, all Should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection domain of claims It is as the criterion.

Claims (2)

1. the method for an organic exhaust gas of carrying out a biological disposal upon, it is characterised in that including:
Connect the blowing device introducing handled waste gas with trickled-bed biofilter, and connect surge tank conduct through circulating pump Processing equipment;
The bacterium solution prepared is mixed with nutritional solution, is added thereto to 1000mg/L methyl-silicone oil and forms two-phase mixtures liquid, by institute State two-phase mixtures liquid and put in described surge tank, under continuous stirring described two-phase mixtures adsorbent is sprayed bio-trickling In reactor, the packing layer making described two-phase mixtures adsorbent uniformly flow through in described trickled-bed biofilter instills reserve liquid layer Again through dynamic as adsorbent from flowing back to described surge tank formation two-phase mixtures liquid stream, start stream mutually when two-phase mixtures liquid stream is dynamic After returning the formation circulation of described surge tank, close described surge tank;Described bacterium solution prepares in the following manner: at municipal wastewater The activated sludge of reason factory biochemistry pool aerobic section mixes with the compost in district of becoming thoroughly decomposed after composting plant, adds water to original volume wherein Methanol 500mg/L, potassium dihydrogen phosphate 500mg/L, potassium phosphate,monobasic 500mg/L, ammonium chloride 500mg/L is added after 20 times, Sodium sulfide 500mg/L, aeration filters after seven days and continues aeration after wherein adding 1000mg/L methanol after supernatant and obtain for seven days; Consisting of of described nutritional solution: methanol 100mg/L, potassium dihydrogen phosphate 100mg/L, potassium phosphate,monobasic 100mg/L, ammonium chloride 50mg/L, sodium sulfide 50mg/L;
Open blowing device, in described trickled-bed biofilter, be passed through waste gas, keep two-phase mixtures liquid stream to move and circulate mutually, Regularly Additional nutrient solution, after 5~7 days, biofilm completes, and circular treatment brings pollutant in waste gas into biomembrane, gas after process External row;The nutritional solution cycle of supplementing is weekly, and additional amount is till reaching described surge tank working water level;
The volume of described surge tank is the 1/20 of trickled-bed biofilter, and surge tank entrance is the charging of tangential eddy current, makes entrance Flowing in surge tank, become swirl flow, spray described bio-trickling by described circulating pump after being sufficiently mixed and react In device, packing layer top realizes circulation.
The method of biological treatment organic exhaust gas the most according to claim 1, it is characterised in that described bio-trickling is anti- The filler answering the packing layer in device uses 1~3cm light ceramic, and the highest diameter group of packing layer is equal to 2:1, packing layer Upper end sets air vent, and exhaust ports is provided with silk screen Despumation device, and packing layer lower end is air inlet, the biology of packing layer bottom It is liquid storage district in dripping filter reactor.
CN201410817507.6A 2014-12-24 2014-12-24 A kind of method of organic exhaust gas of carrying out a biological disposal upon Expired - Fee Related CN104524967B (en)

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CN108031276B (en) * 2017-12-27 2020-12-15 江苏东泽环保科技有限公司 Double-layer drawer type energy-saving constant-temperature ultrasonic reduction biofilm reactor
CN111151122B (en) * 2020-01-22 2023-12-08 杭州楚环科技股份有限公司 Waste gas biological treatment device and control method thereof
CN111282433A (en) * 2020-03-25 2020-06-16 杭州楚环科技股份有限公司 VOCs waste gas treatment method and VOCs waste gas treatment system
CN114044608A (en) * 2021-11-10 2022-02-15 泰州九润环保科技有限公司 MABR-bio-trickling filter coupled wastewater treatment device and process

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CN101077472A (en) * 2007-06-16 2007-11-28 中国矿业大学 Biological dripping and filtering system for purifying organic waste gases and method quick-speed preparing mvcoderm
CN101264421B (en) * 2008-03-20 2010-06-16 湖南大学 Biological filtering device for treating toluene gas
CN202478818U (en) * 2012-03-16 2012-10-10 湖北徐风环保科技有限公司 Novel biological trickling filtering tower for decomposing organic odor
CN102961962A (en) * 2012-12-14 2013-03-13 中国矿业大学 Technology for processing indissolvable and nondegradable organic waste gas by integrated composite organisms
CN103521069B (en) * 2013-10-24 2015-11-18 浙江大学 A kind of method utilizing silicone oil enhanced biological method process hydrophobicity organic exhaust gas

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