CN104147921B - A kind of apparatus and method of the activated carbon combined method processing foul gas of biofiltration - Google Patents

A kind of apparatus and method of the activated carbon combined method processing foul gas of biofiltration Download PDF

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CN104147921B
CN104147921B CN201310177593.4A CN201310177593A CN104147921B CN 104147921 B CN104147921 B CN 104147921B CN 201310177593 A CN201310177593 A CN 201310177593A CN 104147921 B CN104147921 B CN 104147921B
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gas
activated carbon
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biofiltration
carbon adsorption
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CN104147921A (en
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刘建伟
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Beijing University of Civil Engineering and Architecture
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Beijing University of Civil Engineering and Architecture
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Abstract

The invention belongs to technical field of waste gas treatment, the apparatus and method of more particularly to a kind of activated carbon combined method processing foul gas of biofiltration.Apparatus of the present invention are made up of negative pressure collector unit, gas collection pipeline, blower fan, biofiltration unit and activated carbon adsorption unit.Wherein, biofiltration unit bottom has a distribution device in gas-fluid, internal light filling Active biological filler, is provided with the import of nutrient solution spray liquid in side wall and is provided with the pipeline of a connection spray thrower.Activated carbon adsorption unit loads composite activated carbon adsorption stuffing.The foul gas of generating source is collected using negative pressure collecting device, enter biofiltration unit by gas inlet pipe, bacterium and fungi microbe degraded on most of pollutant in foul gas is filled, the low concentration pollutant not being degraded enters activated carbon adsorption unit by gas transmission pipeline, it is purified after the acticarbon absorption wherein filled, purified gas is discharged into air from exhaust outlet.

Description

A kind of apparatus and method of biofiltration-activated carbon combined method processing foul gas
Technical field
The invention belongs to field of gas treatment, more particularly to a kind of biofiltration-activated carbon combined method processing foul gas Apparatus and method.
Background technology
In the urban operating mechanisms such as urban garbage disposal factory, municipal sewage plant and chemical industry, leather, petrochemical industry, pharmacy, skin A large amount of sulfide hydrogens, ammonia, methyl amine, methyl mercaptan, methyl sulfide and volatility can be produced in the industrial process such as leather, papermaking, food processing The foul gas of the materials such as organic compound, this kind of odorant have the characteristics that excitant is strong, olfact is low, environmental hazard is big. In order to ensure health and safety, the harm to environment is reduced, the purification of foul gas has turned into the practical problem of urgent need to resolve.
Existing foul gas treatment technology includes biological treatment, absorption, absorption, catalysis and burning disposal etc..It is different The principle for the treatment of technology is different, and respectively has its scope of application and advantage and disadvantage, for example, biologic treating technique have high treating effect, Non-secondary pollution, investment and operating cost are low, the advantages that being easily managed, especially in processing big flow, the foul gas of low concentration When more show its superiority.Absorption is to be contacted using porosu solid material with blending ingredients system, and it is proper selectively to make One or more components in system are attached to the surface of solids, so as to realize the operating process of specific components separation.Adsorption technology Advantage is removal efficiency height, but applies in general to the processing of the foul gas of low concentration, has removal efficiency height, recovery convenient The advantages that.Absorption be according to physical solubility or chemical reactivity of each component in same liquid flux in gas not Together, and by admixture of gas the process separated.
Foul gas coverage is wide, and intractability is big, although many treatment technologies can handle foul gas, big portion Point technology is not yet ripe and perfect, and there is foul gas intractability up to standard is big, accommodation is small, and treatment effect is low, occupation of land The problems such as area is big, or investment and operating cost height, manage complex operation, are easy to produce secondary pollution problems.Particularly by Different in different industries foul gas constituent complexity, concentration, intractability is relatively large, using these single treatment technologies With equipment mostly there is treatment effeciency is low or investment and operating cost it is high or the drawbacks such as secondary pollution be present.
Conventional foul gas processing often uses single treatment technology, and the material type and removal ability of removal are limited, Efficient removal effect of each technology to the various odorants of gas thus can not be effectively played, outlet is difficult qualified discharge.
The content of the invention
It is respective excellent scarce in view of the deficiency and biofiltration, active carbon adsorption technology of conventional foul gas processing unit Point, the present invention propose a kind of device of new biofiltration-activated carbon combined method processing foul gas, and raising contains complex effluvium The treatment effect of material gases, floor space is saved, is reduced investment outlay and processing cost.
It is a further object of the present invention to provide a kind of method of biofiltration-activated carbon combined method processing foul gas.
A kind of device of new biofiltration of the present invention-activated carbon combined method processing foul gas, is collected by negative pressure Unit, gas collection pipeline, blower fan, biofiltration unit and activated carbon adsorption unit are sequentially connected composition.Foul gas is successively By this five units, the gas after final purification flows out from the exhaust outlet of activated carbon adsorption unit bottom.Wherein:
Biofiltration unit bottom has a distribution device in gas-fluid, internal light filling Active biological filler, and spray is provided with side wall Leaching liquid import and the pipeline of a connection spray thrower is installed, spray thrower is determined by pipeline in the top of biofiltration unit filler Phase spraying nutrient solution, nutrient solution recycle, and support filler in the bottom is gas distribution grid, and bottom is provided with discharge outlet.
Biofiltration unit outlet is connected by gas transmission pipeline with activated carbon adsorption unit.
Activated carbon adsorption unit loads composite activated carbon adsorption stuffing.Set in the side wall of activated carbon adsorption unit by gas Body is discharged into the exhaust outlet of air.
A kind of method of biofiltration of the present invention-activated carbon combined method processing foul gas, utilizes negative pressure collecting device The foul gas of generating source is collected, enters biofiltration unit by gas inlet pipe, most of in foul gas pollutes Bacterium and fungi microbe degraded, the low concentration pollutant not being degraded on thing is filled are tightly held by activated carbon answering in unit It is purified after closing acticarbon absorption, purified gas is discharged into air from exhaust outlet.Blower fan is placed in behind device, Ensure that device is in negative pressure state, avoid the leakage of foul gas.
The gas distribution grid of described biofiltration unit bottom is except that can be uniformly distributed air inlet gas and by more extraction raffinates Outside body overflow discharge biofiltration unit, the effect of support filler is had concurrently.
Described activated carbon adsorption unit filling active carbon fibre peacekeeping granular activated carbon, NACF particle diameter is 5~ 6mm.Granular activated carbon particle diameter is 2~3mm.
It is characteristic of the invention that the main body of foul gas processing unit by negative pressure collector unit, gas collection pipeline, blower fan, Biofiltration unit and activated carbon adsorption unit are sequentially connected composition, and they cooperate with the degraded for completing gas pollutant.Effluvium Body initially enters biofiltration unit after negative pressure is collected, and lightweight Active biological filler is filled with the unit, in neutrallty condition Lower operation, grow has sulfur bacteria, ammonia oxidizing bacteria, nitrite-oxidizing bacteria, heterotrophicy bacteria and fungi above, in foul gas Most of pollutant contacts with these microorganisms and is absorbed and degraded, in the small part odorant pollutant not being degraded and degraded Between product be tightly held by activated carbon into activated carbon adsorption unit, so biological respinse unit and adsorption reaction unit are separately made With can effectively play biological agent and the respective advantage of adsorption reaction and effect;Microorganism can under normal temperature, condition of normal pressure compared with Good performance degradation, is finally reached qualified discharge.The present invention combines the advantage of high-effective microorganism degraded and suction-operated Get up, the odorant of different materializations and biological nature in waste gas is thoroughly degraded, compact-sized, construction letter Clean, operation operation and maintenance are simple, and investment is low with operating cost.Biofiltration-activated carbon combined method processing in the present invention is disliked The apparatus main body structure of odour is biological reaction member and adsorption reaction unit, and nutrient solution is periodically to supply, and spray number is few, It is simple to run operation and maintenance.In addition, this reactor also has, floor space is smaller, compact-sized, and construction is succinct, investment and operation Expense is relatively low, the features such as non-secondary pollution.
The equipment of the present invention has the following advantages that:
1. biofiltration is combined with the advantage of charcoal absorption, a kind of combined type foul gas processing unit is developed into, Degradable component and difficult degradation component in foul gas is set thoroughly to be degraded.The apparatus structure is compact, and construction is succinct, Floor space is small, and operation operation and maintenance are simple.
2. foul gas first passes through biofiltration unit, easily biological-degradable component is effectively gone in biofiltration unit Remove, reduce the air-intake load of consequent activities charcoal absorbing unit.
3. device, without recirculated water, nutrient solution is periodically to supply, spray number is few, and energy consumption is low, and operation operation and maintenance are simple.
Brief description of the drawings
The structural representation of Fig. 1 apparatus of the present invention.
Reference
1. the gas collection pipeline of negative pressure collector unit 2.
3. the distribution device in gas-fluid of blower fan 4.
5. the biofiltration unit of discharge outlet 6.
7. the spray liquid import of lightweight Active biological filler 8.
9. the gas transmission pipeline of spray thrower 10.
11. the NACF of activated carbon adsorption unit 12.
13. the exhaust outlet of granular activated carbon 14.
Embodiment
Embodiment 1.
Refer to Fig. 1.A kind of device of biofiltration made of lucite-activated carbon combined method processing foul gas, Mainly connected successively by negative pressure collector unit 1, gas collection pipeline 2, blower fan 3, biofiltration unit 6 and activated carbon adsorption unit 11 Connect composition.
Distribution device in gas-fluid 4, internal light filling Active biological filler 7, gas distribution dress are arranged at the bottom of biofiltration unit 6 The effect for having support filler concurrently is put, nutrient solution spray liquid import 8 is provided with side wall and the spray thrower 9 of a connection shower nozzle is installed, Spray thrower is in the top of biofiltration unit filler, and by the regular spraying nutrient solution of pipeline, nutrient solution is recycled, and bottom is provided with Discharge outlet 5.
Biofiltration unit outlet is connected by gas transmission pipeline 10 with activated carbon adsorption unit 11.
Filling two layers of adsorption stuffing of NACF 12 and granular activated carbon 13 in activated carbon adsorption unit 11.In activated carbon The exhaust outlet 14 that gas is discharged into air is set in the side wall of absorbing unit.
The foul gas of generating source is collected using negative pressure collector unit 1, enters biofiltration list by gas inlet pipe Member 6, most of pollutant in foul gas are degraded by the bacterium in lightweight Active biological filler 7 and fungi microbe, not by The low concentration pollutant of degraded obtains after being tightly held by activated carbon the NACF 12 in unit 11 and the absorption of granular activated carbon 13 To purification, purified gas is discharged into air from exhaust outlet 14.Blower fan is placed in behind device, ensures that device is in negative pressure state, Avoid the leakage of foul gas.
It is 10000m to establish treating capacity according to this method3At the foul gas of/h Urban Domestic Waste Comprehensive Treatment factory Device is managed, air inlet hydrogen sulfide, ammonia and TVOCs concentration are respectively 8.5mg/m3, 16.0mg/m3, 27.0mg/m3Foul gas, stop It is 40s to stay the time, and when being operated under room temperature condition, hydrogen sulfide, ammonia and the TVOCs concentration of gas outlet are respectively 0mg/m3、0.01mg/ m3And 0.02mg/m3, clearance is respectively 100%, 99.9% and 99.9%.

Claims (4)

  1. A kind of 1. device of biofiltration-activated carbon combined method processing foul gas, by negative pressure collector unit, gas-collecting pipe Road, blower fan, biofiltration unit and activated carbon adsorption unit are sequentially connected composition, it is characterized in that:
    Biofiltration unit bottom has a distribution device in gas-fluid, internal light filling Active biological filler, and nutrient solution is provided with side wall Spray liquid import and the pipeline for being provided with a connection spray thrower, spray thrower pass through in the top of biofiltration unit filler, shower nozzle The regular spraying nutrient solution of pipeline, nutrient solution recycle, and support filler in the bottom is gas distribution grid, and bottom is provided with draining Mouthful;
    Biofiltration unit outlet is connected by gas transmission pipeline with activated carbon adsorption unit;
    Activated carbon adsorption unit loads composite reactive carbon adsorbent, is set in the side wall of activated carbon adsorption unit and is discharged into gas The exhaust outlet of air;
    The distribution device in gas-fluid of described biofiltration unit bottom is porous gas distribution grid, and hole shape is circular hole, and aperture is 2mm, set on plate and dissipate bubbler, gas can be separated into bubble, the liquid overflow pipe of inverted U is also equipped with plate;
    The composite reactive carbon adsorbent of described activated carbon adsorption unit filling is active carbon fibre peacekeeping granular activated carbon, activated carbon Fiber diameter is 5~6mm, and specific surface area is 2000~2200m2/ g, granular activated carbon particle diameter are 2~3mm, active carbon fibre peacekeeping The packing volume ratio of activated carbon is 1.5: 1.
  2. 2. a kind of method that device using described in claim 1 handles foul gas, it is characterised in that:Collected and filled using negative pressure Put the collection of the foul gas of generating source, enter biofiltration unit by gas inlet pipe, most of dirt in foul gas Bacterium and fungi microbe degraded, the low concentration pollutant not being degraded on dye thing is filled enter activated carbon adsorption unit quilt It is purified after the acticarbon absorption wherein filled, purified gas is discharged into air from exhaust outlet, and blower fan is placed in Behind device, ensure that device is in negative pressure state, avoid the leakage of foul gas.
  3. 3. the method according to claim 11, it is characterized in that:Installation spray thrower, passes through at the top of described biofiltration unit The regular spraying nutrient solution of pipeline, excessive nutrient solution are discharged by discharge outlet, and online pH and moisture content are set in biofiltration unit Monitoring probe, and feedback control is formed with spray equipment, ensure that filler pH and moisture content are respectively 7~9 and 45%.
  4. 4. the method according to claim 11, it is characterized in that:Described activated carbon adsorption unit operation temperature is 0~50 DEG C, Operating pressure is normal pressure, and total gas residence time is 10~20s, can effectively remove the malodorant that biofiltration unit does not remove Matter.
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CN105621795A (en) * 2015-12-30 2016-06-01 中天正涵(天津)环保科技有限公司 Method for removing odor substances from wastewater by utilization of deodorant biological bacteria
CN106955559A (en) * 2016-01-12 2017-07-18 上海溪工环境科技有限公司 Meteorological condition self adaptation deodorizing device
CN107185392A (en) * 2017-05-25 2017-09-22 广西壮族自治区环境保护科学研究院 A kind of reaction system for being used to absorb VOCS
CN108057320A (en) * 2017-11-30 2018-05-22 仲维功 A kind of papermaking waste gas purification apparatus and operating method
CN108609720A (en) * 2018-04-03 2018-10-02 浙江亿康环保工程有限公司 A kind of Drain contamination for river channel mouth situ waste water repair system and method
CN108264203B (en) * 2018-04-04 2023-09-26 浙江荣晟环保纸业股份有限公司 System and method for treating odor of papermaking wastewater
CN111111425B (en) * 2020-01-10 2022-03-15 北京建筑大学 Multi-reaction-section combined odor treatment device and treatment method
CN111974203A (en) * 2020-07-20 2020-11-24 南京沃德思环保科技有限公司 Landfill odor treatment device

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