CN1628894A - Catalytic oxidation-bioreactor waste gas treatment apparatus - Google Patents
Catalytic oxidation-bioreactor waste gas treatment apparatus Download PDFInfo
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- CN1628894A CN1628894A CNA2003101213990A CN200310121399A CN1628894A CN 1628894 A CN1628894 A CN 1628894A CN A2003101213990 A CNA2003101213990 A CN A2003101213990A CN 200310121399 A CN200310121399 A CN 200310121399A CN 1628894 A CN1628894 A CN 1628894A
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- bioreactor
- waste gas
- drier
- catalytic oxidizer
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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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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
This invention relates to green technique, which is a catalyzer oxidation to biology reaction container waste gas process device composed of biology reaction container, catalyzer oxidation device and drying device. The container is filled with stuff and has one air-in mouth down the sidewall with a hole pipe and one water-out on the other sidewall down. Its topside wall has spray liquid-in mouth and hole pipe and there is set with air-out pipe, wherein the air-out pipe is connected with the dryer and the dryer is connected with the catalyzer oxidation device. The catalyzer oxidation device is located with oxidation catalyzer with air-out mouth in the down part.
Description
Technical field
The present invention relates to environmental technology field, is to belong to the equipment that utilizes bioreactor for treatment waste gas, particularly a kind of catalytic oxidation-bioreactor waste gas processing equipment.
Background technology
Can produce a large amount of gas that has contaminative in most of industrial and agricultural production processes and the traffic dynamical system.Pollutant in the waste gas comprises volatile organic contaminant and odorant.These pollutants are discharged in the air, cause stench, damage human body on the one hand, destroy crop, form smog, cause local contact scar; On the other hand,, also can form acid rain, damage the ozone layer, cause greenhouse effects, bring interregional influence because they flow in air, spread.Along with the raising of people's standard of living, the public is strong day by day to the requirement of environmental quality.Some developed countries have worked out relevant environmental protection law, and the discharging of strict these pollutants of control requires enterprise to take corresponding control measures before discharging.
For the improvement of waste gas, the early existing research of people, and developed some fruitful control technologys.Study having of more and extensive employing: physics method, firing method, chemical oxidization method, catalytic oxidation, absorption process and absorption method, bioanalysis etc.
Catalytic oxidation is the oxygen that utilizes in the oxidation catalyst activation waste gas, and organic pollution or odorant in the oxidation gaseous effluent change it method of harmless class material into.Be characterized in that reaction speed is fast, to the purification efficiency height of high density pollution thing.But for the volatile organic waste gas and the foul gas of big flow, low concentration, use catalytic oxidation to handle, the energy consumption height, investment is big, operating cost is high.
The biological treatment of waste gas is to utilize microorganism with the degraded of organic pollution in the waste gas or odorant or be converted into the process of harmless or low harmful class material.Compare with other physico-chemical process, handle the waste gas small investment with bioanalysis, operating cost is low, and pollutant can not be transferred to other place, does not produce secondary pollution.Waste gas biological treating equipment in the past mainly is divided into three kinds of biofilter, biological scrubbing tower and bio-trickling filters.They respectively have characteristics and application conditions.
The biofilter (see figure 2) is made of the prewet bioreactor 4 of equipment 19 and inner filling filler of gas, and waste gas enters bioreactor 4 after prewetting, and the microbial degradation that is attached on filler is water and carbon dioxide etc., discharges then.The characteristics of biofilter treatment facility are to have only a bioreactor 4, and equipment is simple, and operating cost is low.Be suitable for concentration of treatment between 0.5-1.0g/m
3Waste gas.But floor space is bigger, is unsuitable for handling the higher waste gas of pollutant levels.
Biological scrubbing tower constitutes (see figure 3) by a washer 16 and the bioreactor 17 with activated sludge that filler is housed usually.Washer 16 is a gas absorbing device, and the pollutant in the waste gas contacts with the water of filling surface, is absorbed by water, and flows in the bioreactor 17 with water; In bioreactor 17, decomposed by the microorganism in the activated sludge.This equipment is easy to control reaction condition, is suitable for concentration of treatment between 1.0-5.0g/m
3, pollutant is hydrophilic waste gas.But need add gas wash mill 16 before bioreactor 17, equipment is complicated.
Bio-trickling filter has only inner bioreactor 4 (see figure 4)s of filling filler, and recirculated water constantly is sprayed on the filler, and filling surface is covered by the biomembrane that microorganism forms.When waste gas passed through reactor 4, the pollutant in the waste gas was degraded by microorganisms.The bio-trickling pool equipment is simpler, and the absorption of pollutant and biodegradation occur in the reaction unit simultaneously in the waste gas, and it is suitable for concentration of treatment and is lower than 0.5g/m
3Waste gas.But can not handle the pollutant of high concentration.
These three kinds of common defectives of waste gas biological treating equipment are: because the microbial degradation pollutant need keep the certain biomass and time of staying, therefore can not remove concentration height or the slow material of biodegradation effectively.Use prolongs the time of staying with the method that volume of equipment increases, and can bring problems such as floor space is big, equipment is complicated, investment is many, operating cost height again.When the load of bioreactor changes, when increasing especially suddenly, the pollutant in the waste gas can not in time be degraded by microorganisms, thereby emission gases phenomenon not up to standard occurs.In addition, the prewet gas scrubbing system of equipment, biological scrubbing tower and bio-trickling filter of the gas in the biofilter all needs a large amount of recirculated waters, and energy consumption is bigger.
The composition of pollutant is complicated in the waste gas, and materialization technology and biotechnology all have its limitation separately, can remove dissimilar pollutants effectively by combination.
Summary of the invention
The objective of the invention is to overcome the defective of above-mentioned biological waste gas treatment equipment, a kind of catalytic oxidation-bioreactor waste gas processing equipment is provided, this equipment is easy and simple to handle, biologic treating technique is combined with the catalytic oxidation technology, on the basis of the pollutant in microbial degradation waste gas, utilize the oxygen in the oxidation catalyst activation waste gas, oxygen after the activation can fast and effeciently will not degraded or the slow material oxidation Decomposition of biodegradation in the waste gas, thereby quickening degradation speed, improve gas purifying effect, and, reduce the volume of bioreactor.
Another object of the present invention provides the method for operating of catalytic oxidation-bioreactor waste gas processing equipment.
For achieving the above object, technical solution of the present invention provides a kind of catalytic oxidation-bioreactor waste gas processing equipment, includes bioreactor, catalytic oxidizer and drier; Wherein, the bioreactor lower sides has an air inlet, in the air inlet inner port perforated pipe is arranged, and another sidewall of bottom is provided with delivery port, and air inlet is lower than delivery port; Upper portion side wall is provided with the spray liquid import, and spray liquid import inner port has another perforated pipe, and another sidewall of top is provided with escape pipe, and escape pipe is connected with drier;
Inside at bioreactor is filled with filler, and filler has active microorganism;
Drier is equipped with in drier inside, and drier is connected with catalytic oxidizer;
Oxidation catalyst is equipped with in catalytic oxidizer inside, has the gas outlet in the lower end of catalytic oxidizer.
Described equipment, its described catalytic oxidizer and drier are installed in the outboard end of bioreactor, and catalytic oxidizer is installed in the lower end of drier.
Described equipment, its described perforated pipe is an antipriming pipe, its aperture is 2～5mm.
A kind of waste gas processing method of catalytic oxidation-bioreactor waste gas processing equipment is: waste gas enters in the bioreactor from the bottom, moves upward, and via the filler that has active microorganism, the pollutant in the waste gas is attached the microbial degradation on filler; Enter in the catalytic oxidizer after the pollutant drying device drying that is not degraded, oxygen in the oxidation catalyst activation waste gas in the catalytic oxidizer, the pollutant that is not degraded by microorganisms is decomposed fast, and purified gas is discharged from the gas outlet of catalytic oxidizer lower end.
The characteristics that the present invention is different from other waste gas treatment equipments are except having bioreactor, also have catalytic oxidizer and gas-drying apparatus.In bioreactor, the pollutant in the waste gas is degraded by microorganisms.In catalytic oxidizer, the quick oxidation Decomposition of oxygen of the oxidized catalyst activation of the material that is not degraded.Can reduce the volume of bioreactor like this.And, easy and simple to handle.Drier in the drier has desiccation to gas, reduces the humidity of the gas that enters catalytic oxidizer, prolongs the service life of oxidation catalyst.And this equipment is equipped with two driers, and all there is valve control at the two ends of each drier, can use in turn, are convenient to the replacing of drier.
Equipment of the present invention has following advantage:
1. biologic treating technique is combined with the catalytic oxidation technology, be developed into catalytic oxidation-bioreactor waste gas processing equipment.Compact conformation, structure is succinct, floor space is little, operation with safeguard simple.
2. can realize simultaneously in the bioreactor that aeration, gas are prewetted and transfer and the degraded of pollutant from the gas phase to the water, reduce auxiliary equipment, reduce energy consumption.
3. because the activation of oxidation catalyst, be not degraded in the waste gas or oxygen that material that biodegradation is slow can be activated oxidation Decomposition fast and effeciently, thereby reduced the volume of bioreactor, improve exhaust purification efficiency.
4. when the load of bioreactor changed suddenly, the concentration of giving vent to anger can kept stable.
5. catalytic oxidation-bioreactor need not recirculated water, and nutrient solution is regular supply, and the spray number of times is few, reduces energy consumption.
Description of drawings
Fig. 1 is the structural representation of present device;
Fig. 2 is an existing biofilter device structure schematic diagram;
Fig. 3 is existing biological scrubbing tower device structure schematic diagram;
Fig. 4 is existing bio-trickling filter device structure schematic diagram.
The specific embodiment
Embodiment 1:
See also Fig. 1.
With catalytic oxidation-bioreactor waste gas processing equipment that plastic plate is made, its length is respectively 50cm, 50cm, 1500cm, comprises bioreactor 4 that filler is housed, catalytic oxidizer 11 etc.; Constitute by the bioreactor 4 that has active microorganism, the catalytic oxidizer 11 that oxidation catalyst 10 is housed and drier 9 that drier 13 is housed;
Have an air inlet 2 at bioreactor 4 lower sides, 2 places are equipped with perforated pipe 1 at air inlet.Another sidewall of bottom is provided with delivery port 3, and air inlet 2 should be lower than delivery port 3, and upper portion side wall is provided with spray liquid import 6, and there is perforated pipe 7 at 6 places in import; Another sidewall of top is provided with escape pipe 8, and escape pipe 8 is connected with drier 9.
Be filled with fillers 5 such as sponge or perlite in the inside of bioreactor 4, filler 5 has active microorganism.
Drier 13 is equipped with in drier 9 inside, and drier 9 is connected with catalytic oxidizer 11;
Oxidation catalyst 13 is equipped with in catalytic oxidizer 11 inside, has gas outlet 12 in the lower end of catalytic oxidizer 11.
Catalytic oxidizer 11 and drier 9 are installed in the outboard end of bioreactor 4, and catalytic oxidizer 11 is installed in the lower end of drier 9.
Drier 9 has two drying tubes, and all there is valve control at each two ends, can use by turns.
Air inlet 2 and spray liquid import 6 are equipped with perforated pipe 1 and the perforated pipe 7 that has porous; Wherein the aperture in each hole is 3-5mm.
Waste gas enters in the bioreactor 4 from the air inlet 2 of bioreactor 4 bottoms, and the pollutant in the waste gas is attached the active microorganism degraded on filler 5; Enter in the catalytic oxidizer 11 after pollutant drying device 9 dryings that are not degraded.Oxidation catalyst 10 in the catalytic oxidizer 11 can activate the oxygen in the waste gas, with the quick oxidation Decomposition of pollutant.Purified gas is discharged from the gas outlet, lower end 12 of catalytic oxidizer 11.
Bioreactor 4 tops have the spray liquid import 6 of perforated pipe 7 and regularly spray carbon-free nutrient liquor to filler 5, and excessive nutrient solution flows into bioreactor 4 bottoms, and the waste gas that enters in the bioreactor 4 is had humidification.Unnecessary nutrient solution is discharged from delivery port 3.
Concentration of treatment is 2.65mg/m
3Ethyl mercaptan class waste gas enters catalytic oxidation-bioreactor from air inlet 2, and the time of staying is 1-3mins.Room temperature condition is operation down, and the concentration of gas outlet 12 is 0.28mg/m
3, clearance＞90.6%.
Embodiment 2:
See also Fig. 1.
With catalytic oxidation-bioreactor waste gas processing equipment that lucite is made, its diameter is 10cm, and structure is identical with embodiment 1 with the course of work.
Concentration of treatment is 511mg/m
3Acetate class waste gas enters catalytic oxidation-bioreactor from air inlet 2, and the time of staying is 1-3mins.Room temperature condition is operation down.The concentration of gas outlet 12 is 1.06mg/m
3, clearance reaches more than 99.8%.
Embodiment 3:
See also Fig. 1.
With catalytic oxidation-bioreactor waste gas processing equipment that lucite is made, its diameter is 10cm, and structure is identical with embodiment 1 with the course of work.
Concentration of treatment is 1306mg/m
3Xylene waste gas enters catalytic oxidation-bioreactor from air inlet 2, and the time of staying is 1-3mins.Room temperature condition is operation down.The concentration of gas outlet 12 is 91.3mg/m
3, being lower than the maximum acceptable concentration of harmful substance in the workshop air that country formulates, clearance reaches more than 93%.
Claims (4)
1. a catalytic oxidation-bioreactor waste gas processing equipment includes bioreactor, catalytic oxidizer and drier; It is characterized in that:
The bioreactor lower sides has an air inlet, in the air inlet inner port perforated pipe is arranged, and another sidewall of bottom is provided with delivery port, and air inlet should be lower than delivery port; Upper portion side wall is provided with the spray liquid import, and spray liquid import inner port has another perforated pipe, and another sidewall of top is provided with escape pipe, and escape pipe is connected with drier;
Inside at bioreactor is filled with filler, and filler has active microorganism;
Drier is equipped with in drier inside, and drier is connected with catalytic oxidizer;
Oxidation catalyst is equipped with in catalytic oxidizer inside, has the gas outlet in the lower end of catalytic oxidizer.
2. as claim 1 described equipment, it is characterized in that: described catalytic oxidizer and drier are installed in the outboard end of bioreactor, and catalytic oxidizer is installed in the lower end of drier.
3. as claim 1 described equipment, it is characterized in that: described perforated pipe is an antipriming pipe, and its aperture is 2～5mm.
4. the waste gas processing method of a catalytic oxidation-bioreactor waste gas processing equipment, it is characterized in that: waste gas enters in the bioreactor from the bottom, move upward, via the filler that has active microorganism, the pollutant in the waste gas is attached the active microorganism degraded on filler; Enter in the catalytic oxidizer after the pollutant drying device drying that is not degraded, the oxygen in the oxidation catalyst activation waste gas in the catalytic oxidizer, the oxygen of activation is with the quick oxidation Decomposition of pollutant, and purified gas is discharged from the gas outlet, lower end of catalytic oxidizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101213990A CN1278761C (en) | 2003-12-16 | 2003-12-16 | Catalytic oxidation-bioreactor waste gas treatment apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101213990A CN1278761C (en) | 2003-12-16 | 2003-12-16 | Catalytic oxidation-bioreactor waste gas treatment apparatus |
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| Publication Number | Publication Date |
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| CN1628894A true CN1628894A (en) | 2005-06-22 |
| CN1278761C CN1278761C (en) | 2006-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2003101213990A Expired - Fee Related CN1278761C (en) | 2003-12-16 | 2003-12-16 | Catalytic oxidation-bioreactor waste gas treatment apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102423611A (en) * | 2011-10-20 | 2012-04-25 | 广州狮岭皮革皮具产业研究中心有限公司 | Method for removing VOCs by UV light catalytic oxidation cooperating with biofiltration |
| CN106881054A (en) * | 2017-02-23 | 2017-06-23 | 苏州欣祥本机械科技有限公司 | A kind of good chemical reactor of ventilation effect |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110385034A (en) * | 2019-07-25 | 2019-10-29 | 江苏中科睿赛环境工程有限公司 | A kind of the exhaust gas joint processing system and combination treatment method of biology-adsoption catalysis |
-
2003
- 2003-12-16 CN CNB2003101213990A patent/CN1278761C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102423611A (en) * | 2011-10-20 | 2012-04-25 | 广州狮岭皮革皮具产业研究中心有限公司 | Method for removing VOCs by UV light catalytic oxidation cooperating with biofiltration |
| CN106881054A (en) * | 2017-02-23 | 2017-06-23 | 苏州欣祥本机械科技有限公司 | A kind of good chemical reactor of ventilation effect |
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| Publication number | Publication date |
|---|---|
| CN1278761C (en) | 2006-10-11 |
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Granted publication date: 20061011 Termination date: 20211216 |