CN106422696A - Reaction device and method for treating volatile organic waste gas by double-liquid-phase biological technology - Google Patents
Reaction device and method for treating volatile organic waste gas by double-liquid-phase biological technology Download PDFInfo
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- CN106422696A CN106422696A CN201611099445.5A CN201611099445A CN106422696A CN 106422696 A CN106422696 A CN 106422696A CN 201611099445 A CN201611099445 A CN 201611099445A CN 106422696 A CN106422696 A CN 106422696A
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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
- 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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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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
- B01D2251/00—Reactants
- B01D2251/95—Specific microorganisms
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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
- B01D2257/20—Halogens or halogen compounds
- B01D2257/206—Organic halogen compounds
- B01D2257/2064—Chlorine
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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 discloses a reaction device for treating volatile organic waste gas by a double-liquid-phase biological technology. The reaction device consists of a waste gas sampling system, a biological filtering tower and a double-liquid-phase spraying system, wherein the waste gas sampling system comprises an electromagnetic air compressor, a micro-sampling device, a glass rotor flowmeter, a three-way tube and a rubber tube; a circular liquid inlet which is used for spraying liquid to microorganisms in a tower is formed in the tower top of the biological filtering tower; observation sample collecting openings are formed in opposite positions of an air inlet hole and an air outlet hole of a tower body; a circular liquid outlet is formed in the bottom of the biological filtering tower, so that percolate can be drained from the tower in time; and one end of the double-liquid-phase spraying system is connected with the spraying liquid inlet of the top of the biological filtering tower, and a container for storing double-liquid-phase spraying liquid and a metering pump for providing pipeline power for the double-liquid-phase spraying liquid are arranged at the other end of the double-liquid-phase spraying system. When the reaction device treats hydrophobic dichloromethane waste gas difficult to biodegrade, part of dichloromethane is directly absorbed and purified by silicone oil in the double-liquid-phase spraying liquid.
Description
Technical field
The invention belongs to VOCs treatment technical field, more particularly to a kind of with Two Liquid Phases biotechnology process volatility
The reaction unit of organic exhaust gas and method.
Background technology
With economic fast development and the continuous intensification of industrialization degree, China is faced with unprecedented environment pressure
Power.In numerous atmosphere pollutions, volatile organic matter (VOCs, Volatile Organic Compounds) is right due to which
Environment and the high and difficulty of governance of harm degree are big, receive the common concern of domestic and international researcher.
VOCs processing method at this stage mainly has combustion method, absorption and sorption, membrance separation, low temperature plasma and biology
Method etc..Wherein have using Biochemical method volatile organic matter that high treating effect, secondary pollution be little, the simple advantage of equipment.
The equipment of common Biochemical method VOCs mainly has 3 kinds：Bio-trickling filter, zinc cation tower and biofiltration tower.Biological mistake
Filter tower is compared with first two equipment, and solution-air contact area is big, technology maturation, it is easy to start, and operating cost is low, is widely used
In the process of every field VOCs.Due in commercial production produce most of VOCs be all hydrophobic, fat-soluble, this kind of
Even some are water insoluble for dissolubility very little of the VOCs in water, when being processed using traditional biological filtration tank, hydrophobicity
The overall mass transport process (gas phase → liquid film → biomembrane) of VOCs has larger resistance, and its bioavailability is hindered,
Microorganism is also greatly reduced to its degradation capability, and therefore, biofiltration tower is undesirable to the treatment effect of hydrophobicity VOCs.Cause
This, probe into a kind of new bio filtering technique to processing hydrophobic volatile organic matter on the basis of traditional biological filtration tank
Significant.
Content of the invention
In order to solve above-mentioned technical problem, proposed by the present invention a kind of with Two Liquid Phases biotechnology process volatility organic waste
The reaction unit of gas and method, and with the reaction unit, the feasibility of Two Liquid Phases bio-filter technology and reliability are studied
And evaluation, it is that practical engineering application is provided fundamental basis and practical experience.By adding organic faciess in traditional biological filtration tank
Dimethicone, is purified a volatile organic matter part, recycles the microorganism in biofiltration tower to have volatility
Organic pollutants are degraded into CO2And H2The nontoxic small-molecule substance such as O.It is finally reached and removes hydrophobicity, the waving of difficult for biological degradation
The purpose of the property sent out Organic substance.
In order to solve above-mentioned technical problem, proposed by the present invention a kind of with Two Liquid Phases biotechnology process volatility organic waste
The reaction unit of gas, is made up of waste gas sampling system, biofiltration tower and three part of Two Liquid Phases spray system；The waste gas enters
Sample system includes electromagnetic type air compressor, microsyringe, glass rotameter, tee T and rubber tube；Sample introduction system
Unified end is connected with waste gas source of the gas, glass rotameter and electromagnetic type air compressor, the other end and biofiltration tower tower
The air inlet at bottom is connected；The biofiltration Tower System includes tower body, and the tower top of the tower body has to microorganism spirt row in tower
The circular inlet of liquid is drenched, is connected with tower body by flange, tower body is stainless steel cylinder, in two punishment up and down of tower body
Not She Zhi venthole and air inlet, be provided with the support of circular hole above the air inlet of lower section, in order to support biofiltration tower
Interior packing layer, inner-tower filling material is divided into 2 layers, and upper strata is the perlite of diameter 5-8mm, and lower floor is the haydite of diameter 10mm；Upper
The support of circular hole is provided with the venthole of side so that Two Liquid Phases spray liquid enters biological mistake by the circular inlet of tower top
After filter tower, uniformly can flow into packing layer, be in packing layer in the presence of circular hole is supported；In the air inlet of tower body and go out
The opposite location of pore arranges observation sample tap, in order to observe biofiltration inner-tower filling material and carry out the sampling of filler and determine to divide
Analysis；The bottom of biofiltration tower arranges circular liquid outlet, facilitates percolate to discharge from tower in time；Bottom of towe again by flange with
Tower body is fixedly linked；The Two Liquid Phases spray system mainly includes dosing pump, spray flow container and micro computer space-time switch；Two Liquid Phases
One end of spray system is connected with the spray liquid inlet of biofiltration column overhead, and the Two Liquid Phases spray liquid of inflow can be biology
Microorganism in filtration tank provides nutrient substance, and the other end is provided with the container for storing the Two Liquid Phases spray liquid and sprays for Two Liquid Phases
Drench the dosing pump that liquid provides pipeline power.
Further, the tower body is stainless steel cylinder, internal diameter 80mm, wall thickness 10mm, and height 600mm, in tower
Body be respectively provided with venthole and air inlet at two up and down, be provided with the support of circular hole above the air inlet of lower section, in order to
The packing layer in biofiltration tower is supported, inner-tower filling material is divided into 2 layers, upper strata is the perlite of diameter 5-8mm, is highly 300mm,
Lower floor is the haydite of diameter 10mm, is highly 30mm.
Two Liquid Phases spray liquid is by nonaqueous phase and water phase composition, and the composition of the Two Liquid Phases spray liquid and concentration are as follows：
Using the above-mentioned method that processed of reaction unit for processing volatile organic waste gas with Two Liquid Phases biotechnology it is,
Hydrophobicity organic exhaust gas enter biofiltration tower from bottom to top by waste gas sampling system, and Two Liquid Phases spray liquid is from tower top from upper
And lower entrance biofiltration tower, the Two Liquid Phases spray liquid sprayed per 12 hours using component as claimed in claim 3 and concentration
Drench a Two Liquid Phases spray liquid, each spray flux 200mL, spray liquid of replacing per 6 days；Strain is the mixed of sewage plant aeration tank
Close strain；Sludge 4L is taken, adds dichloromethane that domestication culture is carried out, the daily aeration 8h of sludge；Dichloromethane was added per 2 days within 1st week
Alkane 10mL, added dichloromethane 20mL on the 2nd week per 2 days；After taming two weeks, sludge is mixed injection biliquid with perlite and haydite
Phase biofiltration tower so as in perlite surface biofilm.
Wherein, hydrophobicity organic exhaust gas select dichloromethane, and the inlet concentration of dichloromethane is 400 1200mg/m3, stop
The time is stayed for 27s.
The present invention compared with prior art, with advantages below and prominent effect：
Forming Two Liquid Phases biofiltration tower by nonaqueous phase dimethicone is added in spray liquid, on the one hand can strengthen
Mass-transfer progress, improves the absorption efficiency of organic pollution, on the other hand can also be to microorganism reply external condition change
Cushioning effect is played, such that it is able to break through two crucial restrictions in traditional biological method：(1) hydrophobicity VOCs is difficult to turn from gas phase
Participation biological respinse in biofacies is moved on to, mass-transfer efficiency is undesirable；(2) accumulation of high concentration VOCs and toxic metabolite,
The vital movement of microorganism is made to be poisoned and suppress.Therefore, Two Liquid Phases bioreactor has higher than traditional biological technology
Advantage.In dichloromethane inlet gas concentration in 400 1200mg/m3In the case of, Two Liquid Phases biofiltration tower is to dichloromethane
Removal effect is better than the single liquid phase biofiltration tower without silicone oil, and average removal rate reaches 81%, and single liquid phase biofiltration
Tower is 66% to the clearance of dichloromethane.
Description of the drawings
Fig. 1 Two Liquid Phases biotechnology processes the reaction unit of volatile organic waste gas.
Specific embodiment
Tell about the detailed content of the present invention by the following examples, the convenience that embodiment is to understand is provided, definitely not
Limit the present invention.
Embodiment one：Fig. 1 is a kind of reaction unit and method for processing volatile organic waste gas with Two Liquid Phases biotechnology,
Mainly it is made up of waste gas sampling system, biofiltration tower and four part of Two Liquid Phases spray system.
The waste gas sampling system mainly include electromagnetic type air compressor, microsyringe, glass rotameter, three
Siphunculus and rubber tube.Sampling system one end is connected with waste gas source of the gas, glass rotameter and electromagnetic type air compressor,
The other end is connected with the air inlet of biofiltration tower bottom of towe.
The tower top of the biofiltration Tower System has the circular inlet for drenching liquid to microorganism spirt row in tower, by flange
It is connected with tower body, tower body is stainless steel cylinder, internal diameter 80mm, wall thickness 10mm, height 600mm, up and down the two of tower body
Place is respectively provided with venthole and air inlet, is provided with the support of circular hole, in order to support biological mistake above the air inlet of lower section
Packing layer in filter tower, inner-tower filling material is divided into 2 layers, and upper strata is the perlite of diameter 5-8mm, is highly 300mm, and lower floor is diameter
The haydite of 10mm, is highly 30mm；The support of circular hole is provided with venthole up so that Two Liquid Phases spray liquid passes through
After the circular inlet of tower top enters biofiltration tower, uniformly can flow into packing layer, be filler in the presence of circular hole is supported
In layer.Observation sample tap is set in the air inlet of tower body and the opposite location of venthole, is filled out in order to observe in biofiltration tower
Expect and carry out the sampling of filler and determine analysis.The bottom of biofiltration tower arranges circular liquid outlet, facilitate percolate in time from
Discharge in tower.Bottom of towe is fixedly linked with tower body again by flange.
The Two Liquid Phases spray system mainly includes dosing pump, spray flow container and micro computer space-time switch.Two Liquid Phases are sprayed
One end of system is connected with the spray liquid inlet of biofiltration column overhead, and the Two Liquid Phases spray liquid of inflow can be biofiltration
Microorganism in tower provides nutrient substance, and the other end is provided with the container for storing the spray liquid and provides pipeline power for spray liquid
Dosing pump.
The Two Liquid Phases spray liquid is sprayed for the Two Liquid Phases that nonaqueous phase (dimethicone) and water phase (inorganic nutrient solution) constitute
Liquid is drenched, the composition of the Two Liquid Phases spray liquid and concentration are as follows：
Hydrophobicity organic exhaust gas enter biofiltration tower from bottom to top by waste gas sampling system, and Two Liquid Phases spray liquid from
Tower top enters biofiltration tower from top to bottom, and Two Liquid Phases spray liquid was sprayed once per 12 hours, each spray flux 200mL, per 6 days
Change a spray liquid.
The strain of selection is the mixed bacteria of sewage plant aeration tank.Sludge 4L is taken, adds dichloromethane that domestication culture is carried out,
The daily aeration 8h of sludge.Dichloromethane 10mL was added within 1st week per 2 days, added dichloromethane 20mL per 2 days within the 2nd week.Domestication two weeks
Afterwards sludge is mixed injection Two Liquid Phases biofiltration tower with perlite and haydite so as in perlite surface biofilm.
Hydrophobicity organic exhaust gas select dichloromethane, and the inlet concentration of dichloromethane is 400 1200mg/m3, the time of staying
For 27s.
Embodiment two：Import concentration dichloromethane is in 500 700mg/m3, in the case that the time of staying is 27s, Two Liquid Phases
Biofiltration tower is 73% to the average removal rate of dichloromethane.
Embodiment three：Import concentration dichloromethane is in 700 900mg/m3, in the case that the time of staying is 27s, Two Liquid Phases
Biofiltration tower is 81% to the average removal rate of dichloromethane.
Example IV：Import concentration dichloromethane is in 900 1100mg/m3, in the case that the time of staying is 27s, Two Liquid Phases
Biofiltration tower is 93% to the average removal rate of dichloromethane.
Embodiment five：Import concentration dichloromethane is in 1100 1200mg/m3, in the case that the time of staying is 27s, biliquid
Phase biofiltration tower is 83% to the average removal rate of dichloromethane.
Although above in conjunction with figure, invention has been described, but the invention is not limited in above-mentioned specific embodiment party
Formula, above-mentioned specific embodiment is only schematic rather than restricted, and one of ordinary skill in the art is at this
Under bright enlightenment, without deviating from the spirit of the invention, many variations can also be made, these belong to the guarantor of the present invention
Within shield.
Claims (5)
1. a kind of with Two Liquid Phases biotechnology process volatile organic waste gas reaction unit, it is characterised in that by waste gas sample introduction
System, biofiltration tower and three part of Two Liquid Phases spray system composition；
The waste gas sampling system include electromagnetic type air compressor, microsyringe, glass rotameter, tee T and
Rubber tube；Sampling system one end is connected with waste gas source of the gas, glass rotameter and electromagnetic type air compressor, the other end with
The air inlet of biofiltration tower bottom of towe is connected；
The biofiltration Tower System includes tower body, and the tower top of the tower body has the circle for drenching liquid to microorganism spirt row in tower to enter
Liquid mouth, is connected with tower body by flange, tower body be stainless steel cylinder, tower body be respectively provided with venthole at two up and down
And air inlet, the support of circular hole is provided with above the air inlet of lower section, in order to support the packing layer in biofiltration tower, tower
Interior filler is divided into 2 layers, and upper strata is the perlite of diameter 5-8mm, and lower floor is the haydite of diameter 10mm；Set on venthole up
Put round-meshed support so that Two Liquid Phases spray liquid after the circular inlet of tower top enters biofiltration tower, Ke Yi
In the presence of circular hole is supported, uniformly packing layer is flowed into, be in packing layer；In the air inlet of tower body and the opposite location of venthole
Observation sample tap is set, in order to observe biofiltration inner-tower filling material and carry out the sampling of filler and determine to analyze；Biofiltration tower
Bottom circular liquid outlet is set, facilitate percolate to discharge from tower in time；Bottom of towe is fixedly linked with tower body again by flange；
The Two Liquid Phases spray system mainly includes dosing pump, spray flow container and micro computer space-time switch；Two Liquid Phases spray system
One end be connected with the spray liquid inlet of biofiltration column overhead, the Two Liquid Phases spray liquid of inflow can be in biofiltration tower
Microorganism provide nutrient substance, the other end be provided with store the Two Liquid Phases spray liquid container and for Two Liquid Phases spray liquid offer
The dosing pump of pipeline power.
2. the reaction unit of volatile organic waste gas is processed with Two Liquid Phases biotechnology according to claim 1, and its feature exists
In the tower body is stainless steel cylinder, internal diameter 80mm, wall thickness 10mm, height 600mm, in two punishment up and down of tower body
Not She Zhi venthole and air inlet, be provided with the support of circular hole above the air inlet of lower section, in order to support biofiltration tower
Interior packing layer, inner-tower filling material is divided into 2 layers, and upper strata is the perlite of diameter 5-8mm, is highly 300mm, and lower floor is diameter 10mm
Haydite, be highly 30mm.
3. the reaction unit of volatile organic waste gas is processed with Two Liquid Phases biotechnology according to claim 1, and its feature exists
In wherein, Two Liquid Phases spray liquid is by nonaqueous phase and water phase composition, and the composition of the Two Liquid Phases spray liquid and concentration are as follows：
4. a kind of with Two Liquid Phases biotechnology process volatile organic waste gas method, it is characterised in that using such as claim 1
The reaction unit for processing volatile organic waste gas with Two Liquid Phases biotechnology, wherein, hydrophobicity organic exhaust gas pass through waste gas
Sampling system enters biofiltration tower from bottom to top, and Two Liquid Phases spray liquid enters biofiltration tower from top to bottom from tower top, institute
Two Liquid Phases spray liquid is stated using component as claimed in claim 3 and concentration, a Two Liquid Phases spray liquid was sprayed per 12 hours, per
Secondary spray flux 200mL, changed a spray liquid per 6 days；
Strain is the mixed bacteria of sewage plant aeration tank；Sludge 4L is taken, adds dichloromethane that domestication culture is carried out, sludge exposes daily
Gas 8h；Dichloromethane 10mL was added within 1st week per 2 days, added dichloromethane 20mL per 2 days within the 2nd week；After taming two weeks by sludge with
Perlite and haydite mixing injection Two Liquid Phases biofiltration tower so as in perlite surface biofilm.
5. the method for according to claim 4 volatile organic waste gas being processed with Two Liquid Phases biotechnology, it is characterised in that dredge
Aqueouss organic exhaust gas select dichloromethane, and the inlet concentration of dichloromethane is 400 1200mg/m3, the time of staying is 27s.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107694307A (en) * | 2017-10-25 | 2018-02-16 | 天津大学 | A kind of method that microwave radiation collaboration Two Liquid Phases biofiltration tower removes VOCs |
| CN108031276A (en) * | 2017-12-27 | 2018-05-15 | 江苏东泽环保科技有限公司 | Double-drawer formula energy-saving constant-temperature ultrasound reduction biofilm reactor |
| CN110559841A (en) * | 2019-09-29 | 2019-12-13 | 天津大学 | Electrochemistry improved biological filter tower purification device and application 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 |
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| CN102628025A (en) * | 2012-04-09 | 2012-08-08 | 天津大学 | Nutrient liquid formula for culturing high-temperature thermophilic bacterium and preparation method and application thereof |
| CN103263846A (en) * | 2013-06-04 | 2013-08-28 | 天津大学 | Reaction device and method for treating high temperature organic waste gas based on thermophilic bacteria biotechnology |
| CN103521069A (en) * | 2013-10-24 | 2014-01-22 | 浙江大学 | Method for treating hydrophobic organic waste gas by utilizing silicone oil reinforced biological method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20070122900A1 (en) * | 2005-11-30 | 2007-05-31 | Scheuch Gmbh | Bioscrubber |
| CN102628025A (en) * | 2012-04-09 | 2012-08-08 | 天津大学 | Nutrient liquid formula for culturing high-temperature thermophilic bacterium and preparation method and application thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107694307A (en) * | 2017-10-25 | 2018-02-16 | 天津大学 | A kind of method that microwave radiation collaboration Two Liquid Phases biofiltration tower removes VOCs |
| CN108031276A (en) * | 2017-12-27 | 2018-05-15 | 江苏东泽环保科技有限公司 | Double-drawer formula energy-saving constant-temperature ultrasound reduction biofilm reactor |
| 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 |
| CN110559841A (en) * | 2019-09-29 | 2019-12-13 | 天津大学 | Electrochemistry improved biological filter tower purification device and application 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 |
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Application publication date: 20170222 |