CN100344347C - Process for biological oxidation treatment of waste gas containing nitrogen oxide - Google Patents
Process for biological oxidation treatment of waste gas containing nitrogen oxide Download PDFInfo
- Publication number
- CN100344347C CN100344347C CNB2004100673489A CN200410067348A CN100344347C CN 100344347 C CN100344347 C CN 100344347C CN B2004100673489 A CNB2004100673489 A CN B2004100673489A CN 200410067348 A CN200410067348 A CN 200410067348A CN 100344347 C CN100344347 C CN 100344347C
- Authority
- CN
- China
- Prior art keywords
- nitric oxide
- waste gas
- oxide production
- production waste
- biological oxidation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
Landscapes
- Treating Waste Gases (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
The present invention provides a method for biological oxidation treatment of exhaust gas containing nitric oxide. In the method, mixed bacterium liquid which is obtained after nitrified bacterium spawns are amplified and cultured for 15 days to 20 days is sprayed on biological stuffing to produce the stuffing with biological films, and the exhaust gas containing nitric oxide pass through the stuffing with the biological films to remove nitric oxide in the exhaust gas. The stuffing used by the method of the present invention has low pressure drop and large specific surface area, large biomass can be loaded, and the present invention is suitable for treating the exhaust gas containing NO with high flow rate. The treating efficiency is high, and the removal efficiency can reach more than 90 % after an organic carbon source is added. The present invention is especially suitable for the exhaust gas containing NO with low concentration, the removal efficiency can be stably kept more than 90 %, and the removal efficiency of the exhaust gas containing NO with medium concentration and high concentration can reach about 70 %. The operation is carried out at normal temperature, and the present invention has the advantages of simple operating condition, economy and practicality.
Description
(1) technical field
The present invention relates to a kind of waste gas bioremediation, especially a kind of bioremediation that contains nitric oxide waste gas.
(2) background technology
Nitrogen oxide in the gas (NOx) is colourless NO, NO russet
2The general name of gas and composition thereof.NOx mainly produces harm by respiratory tract to human body.NOx (is converted into NO in the atmosphere of residential area
2) measured value of maximum permissible concentration is 0.15mg/m
3
The discharging of NOx is just receiving increasing concern, and most of NOx produces General N O and NO by the oxidation of nitrogen in fuel and the air in the high-temp combustion process
2Shared ratio is respectively 95% and 5% in NOx.Acid rain and photochemical fog are mainly caused by atmosphere pollution such as oxysulfide, NOx and VOC, are irreversible to the variation that soil and aquatic ecosystem brought.In recent years, for the control of these pollutants, people had done number of research projects, and had formed many application technologies.
The measure of the control NOx discharging of having adopted at present mainly is divided into Combustion Process Control and the control of burning back.The means of Combustion Process Control are mainly and adopt low-NOx combustor, combustion gas recirculation, fuel reburning, fractional combustion and water or steam to spray.The measure of burning back denitration comprises wet method (because cost is too high, its commercial value is limited) and dry method, absorbs (Heterogeneous) and homology absorption (Homogeneous) as catalysis.Wherein mature technique is that selectivity catalysis absorbs (SCR) denitration.But remain in the SCR field many problem to be solved arranged, this mainly shows: the sign of SCR catalyst, the mechanism of SCR reaction, the effect of catalyst surface active position mechanism and other surface mass form, the optionally raising of SCR reaction, the mechanism of production of the accessory substance N:O of SCR reaction and effect etc.Other still an open question is restricting the commercial Application of SCR technology.As the cost problem (comprising that catalyst poisoning lost efficacy) of catalyst, reaction temperature is high excessively.
(3) summary of the invention
For solving catalyst for treating waste gas cost problem in the prior art, the invention provides a kind of catalyst and high bioremediation that contains nitric oxide waste gas of removal efficient of not needing.
For reaching goal of the invention the technical solution used in the present invention be:
A kind of biological oxidation processing method that contains nitric oxide production waste gas, described method is that the nitrobacteria bacterial classification was carried out amplification cultivation after 15~20 days, resulting mixed bacteria liquid is sprayed on the biologic packing material, made biomembranous filler, made describedly to contain nitric oxide production waste gas by biomembranous filler being arranged to remove the nitric oxide in the waste gas.
Describedly contain nitric oxide production waste gas and keep required nutrient solution of flora metabolism and organic carbon source by there being biomembranous filler to add simultaneously.Described organic carbon source is selected glucose usually for use.
Described biological oxidation processing method is particularly useful in the described waste gas nitric oxide concentration less than 200mg/m
3Situation, waste gas after treatment can reach the nitric oxide discharge standard.
Described nitrobacteria bacterial classification is one of following or the mixture of its two or more arbitrary proportion:
1. 2. 3. 4. mixed bacteria liquid of activated sludge supernatant of activated sludge of pure culture
5. 6. microorganism formulation of the extract of soil around the exhaust emission or water.
The nutrient solution of described nitrobacteria amplification cultivation can be 5: 1 133.93mg/m of mass ratio
3NaNO
2And 2.67mg/m
3K
2HPO
4Nutrient mix is respectively as nitrogenous source and phosphorus source.
Described biologic packing material is the porous charcoal material, as the porous charcoal material of Carbon Foam by name.
Concrete, described method is carried out as follows:
(1) in activated sludge, adds culture medium, 133.93mg/m
3NaNO
2And 2.67mg/m
3K
2HPO
4Nutrient solution mix in 5: 1 ratio, respectively as nitrogenous source and phosphorus source, in temperature is 25 ℃ blake bottle, carry out continuous aeration, constantly aerating oxygen carries out domestication and the cultivation to nitrobacteria in the activated sludge;
(2) 15~25 days, target product (NaNO is arranged after testing
3) occur, continue to cultivate, add a certain amount of organic carbon source, enrichment culture;
(3) the bacterium liquid of taming out is poured in the inoculation basin, filler is selected the porous charcoal material, and biofilm continues 80~100 days;
(4) porous aggregate after the biofilm is packed in the Filter column of filtration system, and keeping the pH value in the Filter column is 7.0~7.5, makes to contain nitric oxide production waste gas and pass through Filter column.
Pass through Filter column for keeping gas humidity, can make in the described method step (4) to contain nitric oxide production waste gas from top to bottom with aerosol.Described aerosol can come from supersonic gas-dissolving glue generator.
The beneficial effect that contains the bioremediation of nitric oxide waste gas of the present invention is mainly reflected in: the filler pressure drop that (1) this method adopts is little, and specific area is big, and the biomass that can bear is big, is fit to handle big flow and contains NO waste gas; (2) treatment effeciency height: after adding organic carbon source, remove efficient and can reach more than 90%; (3) be specially adapted to low concentration of NO waste gas, remove efficient and can be stabilized in more than 90%, also can reach about 70% in NO waste gas efficient for middle and high concentration; (4) operation is carried out at normal temperatures, and operating condition is simple, and is economical and practical.
(4) description of drawings
Fig. 1 is a biofilm system flow schematic diagram of the present invention;
Fig. 2 is a treatment system schematic flow sheet of the present invention.
(5) specific embodiment
The present invention is described further below in conjunction with specific embodiment:
Embodiment 1:
Step:
(1) in activated sludge (5L), adds culture medium, wherein contain (NH
4)
3SO
4(10g), FeSO
4(1g), K
2HPO
4(5g), MgSO
4(2.5g), NaCl (10g), CaCO
3(5g), and add 133.93mg/m by mass ratio ratio mixing in 5: 1
3NaNO
2-N and 2.67mg/m
3K
2HPO
4The nutrient mix of-P, NaNO
2And K
2HPO
4Respectively as nitrogenous source and phosphorus source, in being 25 ℃ blake bottle, temperature carries out continuous aeration then, and constantly aerating oxygen carries out domestication and the cultivation to nitrobacteria in the activated sludge.
(2) after about 20 days, target product (NaNO is arranged after testing
3) occur, continue to cultivate, add 5g glucose, enrichment culture.
(3) the biofilm stage: step (2) gained bacterium liquid is poured in the inoculation basin, and the inoculation basin is made by lucite, and as shown in Figure 1, bacterium liquid pressurizes through pump, is showered on the biologic packing material of inoculating in the basin through liquid distributor then.Filler selects for use name to be called the porous charcoal material of Carbon Foam, and biofilm continues about 3 months.
(4) porous aggregate after the biofilm is packed in as shown in Figure 2 the Filter column, and this filtration system comprises the polypropylene cylinder that 3 internal diameters are 50.8mm, and the filtrate floor height is 305mm.And adopt a supersonic gas-dissolving glue generator, and being placed on the underwater in the independent cylinder, aerosol takes place in the energising back, and this aerosol is transported to from top to bottom with the NO inlet air flow keeps gas humidity in the Filter column.Concentration and tolerance that mass flow instrument in the employing NO inlet pipeline and the spinner flowmeter in the outlet conduit are regulated NO.Nozzle is equipped with at the top of Filter column, when NO gas stops to import, adopts tubing pump by this nozzle regularly, automatically add nutrient solution and organic carbon source (glucose) to keep the metabolism of flora; Nozzle also can be used as spray cushioning liquid (6g/L NaHCO
3Solution) keep pH value in the biofilter in 7.0~7.5 scopes, to satisfy the desired alkalescence environment of autotrophy nitrifier.
Adopt this bacteria bed PROCESS FOR TREATMENT laboratory simulation waste gas, nitric oxide concentration is 130mg/m
3The time of staying is 2.6min, laboratory simulation waste gas is nitric oxide and air mixture, and earlier with after the blending tank emptying, nitric oxide enters blending tank with air to be mixed, mist enters in the cylinder on the aerosol generator then, together enter from top to bottom in the Filter column with aerosol, the removal efficiencies of waste gas shows: remove the startup stage (first week), remove efficient and reach about 80%, after this remove efficient and increase, be stabilized in 91%~93% after 12 days.
Embodiment 2:
Step:
(1) adds culture medium in the extract mixtures (5L) of soil around exhaust emission and water, wherein contain (NH
4)
3SO
4(10g), FeSO
4(1g), K
2HPO
4(5g), MgSO
4(2.5g), NaCl (10g), CaCO
3(5g), and add 133.93mg/m by mass ratio ratio mixing in 5: 1
3NaNO
2-N and 2.67mg/m
3K
2HPO
4The nutrient mix of-P, NaNO
2And K
2HPO
4Respectively as nitrogenous source and phosphorus source, in being 25 ℃ blake bottle, temperature carries out continuous aeration then, and constantly aerating oxygen carries out domestication and the cultivation to nitrobacteria in the activated sludge.
(2) after about 15 days, target product (NaNO is arranged after testing
3) occur, continue to cultivate, add the glucose of 5g, enrichment culture.
(3) the biofilm stage: the bacterium liquid of taming out is poured in the inoculation basin, and the inoculation basin is made by lucite, as shown in Figure 1.Filler is selected the porous charcoal material of Carbon Foam by name.Biofilm continues about 2 months.
(4) porous aggregate after the biofilm is packed in as shown in Figure 2 the filtration system, and this filtration system comprises the polypropylene cylinder Filter column that 3 internal diameters are 50.8mm, and the filtrate floor height is 305mm.And adopt a supersonic gas-dissolving glue generator, and being placed on the underwater in the independent cylinder, aerosol takes place in the energising back, and this aerosol is transported to from top to bottom with the NO inlet air flow keeps gas humidity in the Filter column.Concentration and tolerance that mass flow instrument in the employing NO inlet pipeline and the spinner flowmeter in the outlet conduit are regulated NO.Nozzle is equipped with at the top of each Filter column, when NO gas stops to import, adopts tubing pump by this nozzle regularly, automatically add nutrient solution and organic carbon source (glucose) to keep the metabolism of flora; Nozzle also can be used as spray cushioning liquid (6g/LNaHCO
3Solution) keep pH value in the biological filter system in 7.0~7.5 scopes, to satisfy the desired alkalescence environment of autotrophy nitrifier.
Adopt this biological treatment treatment of laboratory simulated exhaust, nitric oxide concentration is 150mg/m
3, the time of staying is 3.0min, the removal efficiencies of waste gas shows: remove the startup stage (first week), remove efficient and reach about 85%, after this remove efficient and increase, be stabilized in 92%~95% after 14 days.
Embodiment 3:
Step:
(1) at the 5L culture medium, wherein contains (NH
4)
3SO
4(10g), FeSO
4(1g), K
2HPO
4(5g), MgSO
4(2.5g), NaCl (10g), CaCO
3(5g), add the mixture 50mL of nitrobacteria bacterial classification and 1: 1 mass ratio of activated sludge supernatant, and add 133.93mg/m in mass ratio ratio mixing in 5: 1
3NaNO
2-N and 2.67mg/m
3K
2HPO
4The nutrient mix of-P, NaNO
2And K
2HPO
4Respectively as nitrogenous source and phosphorus source, in being 25 ℃ blake bottle, temperature carries out continuous aeration then, and constantly aerating oxygen carries out domestication and the cultivation to nitrobacteria in the activated sludge.
(2) after about 15 days, target product (NaNO is arranged after testing
3) occur, continue to cultivate, add the glucose of a certain amount of 5g, enrichment culture.
(3) the biofilm stage: step (2) gained bacterium liquid is poured in the inoculation basin, and the inoculation basin is made by lucite, as shown in Figure 1.Filler is selected the porous charcoal material of Carbon Foam by name.Biofilm continues about 3 months.
(4) porous aggregate after the biofilm is packed in as shown in Figure 2 the filtration system, and this filtration system comprises the polypropylene cylinder Filter column that 3 internal diameters are 50.8mm, and the filtrate floor height is 305mm.And adopt a supersonic gas-dissolving glue generator, and being placed on the underwater in the independent cylinder, aerosol takes place in the energising back, and this aerosol is transported to from top to bottom with the NO inlet air flow keeps gas humidity in the Filter column.Concentration and tolerance that mass flow instrument in the employing NO inlet pipeline and the spinner flowmeter in the outlet conduit are regulated NO.Nozzle is equipped with at the top of each Filter column, when NO gas stops to import, adopts tubing pump by this nozzle regularly, automatically add nutrient solution and organic carbon source (glucose) to keep the metabolism of flora; Nozzle also can be used as spray cushioning liquid (6g/LNaHCO
3Solution) keep pH value in the biological filter system in 7.0~7.5 scopes, to satisfy the desired alkalescence environment of autotrophy nitrifier.
Adopt this biological treatment treatment of laboratory simulated exhaust, nitric oxide concentration is 100mg/m
3, the time of staying is 1.5min, the removal efficiencies of waste gas shows: remove the startup stage (first week), remove efficient and reach about 80%, after this remove efficient and increase, be stabilized in 90%~92% after 14 days.
Claims (9)
1. biological oxidation processing method that contains nitric oxide production waste gas, it is characterized in that described method is that the nitrobacteria bacterial classification was carried out amplification cultivation after 15~20 days, resulting mixed bacteria liquid is sprayed on the biologic packing material, made biomembranous filler, made describedly to contain nitric oxide production waste gas by biomembranous filler being arranged to remove the nitric oxide in the waste gas; Describedly contain nitric oxide production waste gas and keep required nutrient solution of flora metabolism and organic carbon source by there being biomembranous filler to add simultaneously.
2. the biological oxidation processing method that contains nitric oxide production waste gas as claimed in claim 1 is characterized in that described organic carbon source is a glucose.
3. the biological oxidation processing method that contains nitric oxide production waste gas as claimed in claim 1 is characterized in that nitric oxide concentration is less than 200mg/m in the described waste gas
3
4. as the described biological oxidation processing method that contains nitric oxide production waste gas of one of claim 1~3, it is characterized in that described nitrobacteria bacterial classification is one of following or the mixture of its two or more arbitrary proportion:
1. 2. 3. 4. mixed bacteria liquid of activated sludge supernatant of activated sludge of pure culture
5. 6. microorganism formulation of the extract of soil around the exhaust emission or water.
5. the biological oxidation processing method that contains nitric oxide production waste gas as claimed in claim 4, the nutrient solution that it is characterized in that described nitrobacteria amplification cultivation are 5: 1 133.93mg/m of mass ratio
3NaNO
2And 2.67mg/m
3K
2HPO
4Nutrient mix.
6. the biological oxidation processing method that contains nitric oxide production waste gas as claimed in claim 4 is characterized in that described biologic packing material is the porous charcoal material.
7. the biological oxidation processing method that contains nitric oxide production waste gas as claimed in claim 1 is characterized in that described method carries out as follows:
(1) in activated sludge, adds culture medium, 133.93mg/m
3NaNO
2And 2.67mg/m
3K
2HPO
4Nutrient solution mix in 5: 1 ratio, respectively as nitrogenous source and phosphorus source, in temperature is 25 ℃ blake bottle, carry out continuous aeration, constantly aerating oxygen carries out domestication and the cultivation to nitrobacteria in the activated sludge;
(2) 15~25 days, target product NaNO is arranged after testing
3Occur, continue to cultivate, add a certain amount of organic carbon source, enrichment culture;
(3) the bacterium liquid of taming out is poured in the inoculation basin, filler is selected the porous charcoal material, and biofilm continues 80~100 days;
(4) porous aggregate after the biofilm is packed in the Filter column of filtration system, and keeping the pH value in the Filter column is 7.0~7.5, makes to contain nitric oxide production waste gas and pass through Filter column.
8. the biological oxidation processing method that contains nitric oxide production waste gas as claimed in claim 7 is characterized in that described method step (4) makes and contains nitric oxide production waste gas and pass through Filter column from top to bottom with aerosol.
9. the biological oxidation processing method that contains nitric oxide production waste gas as claimed in claim 8 is characterized in that described aerosol comes from supersonic gas-dissolving glue generator.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB2004100673489A CN100344347C (en) | 2004-10-21 | 2004-10-21 | Process for biological oxidation treatment of waste gas containing nitrogen oxide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB2004100673489A CN100344347C (en) | 2004-10-21 | 2004-10-21 | Process for biological oxidation treatment of waste gas containing nitrogen oxide |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1724123A CN1724123A (en) | 2006-01-25 |
CN100344347C true CN100344347C (en) | 2007-10-24 |
Family
ID=35923834
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB2004100673489A Expired - Fee Related CN100344347C (en) | 2004-10-21 | 2004-10-21 | Process for biological oxidation treatment of waste gas containing nitrogen oxide |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN100344347C (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100444935C (en) * | 2007-02-14 | 2008-12-24 | 杭州能源环境工程有限公司 | Sewage biological desulphurizing device |
CN104147920A (en) * | 2014-08-19 | 2014-11-19 | 东北电力大学 | Apparatus for processing nitrogen oxide through cooperation of ferrous complexing agent and aerobic denitrifying bacteria, and method thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5480484A (en) * | 1977-12-10 | 1979-06-27 | Kubota Ltd | Deodorization of ammonia-containing gas |
JPH0919699A (en) * | 1995-07-04 | 1997-01-21 | Kurita Water Ind Ltd | Method for preventing degradation in activity of nitrifying bacteria |
CN1453062A (en) * | 2002-04-23 | 2003-11-05 | 长春市环保技术开发公司 | Biological filtering method of eliminating off odour from solid waste |
-
2004
- 2004-10-21 CN CNB2004100673489A patent/CN100344347C/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5480484A (en) * | 1977-12-10 | 1979-06-27 | Kubota Ltd | Deodorization of ammonia-containing gas |
JPH0919699A (en) * | 1995-07-04 | 1997-01-21 | Kurita Water Ind Ltd | Method for preventing degradation in activity of nitrifying bacteria |
CN1453062A (en) * | 2002-04-23 | 2003-11-05 | 长春市环保技术开发公司 | Biological filtering method of eliminating off odour from solid waste |
Non-Patent Citations (1)
Title |
---|
自养型生物过滤器硝化氧化一氧化氮 陈建孟 等,环境科学,第24卷第2期 2003 * |
Also Published As
Publication number | Publication date |
---|---|
CN1724123A (en) | 2006-01-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Van Groenestijn et al. | Biofilters based on the action of fungi | |
US5795751A (en) | Biofilter for removal of nitrogen oxides from contaminated gases under aerobic conditions | |
Baltrėnas et al. | Investigation into the air treatment efficiency of biofilters of different structures | |
CN106215687A (en) | Biofilter odor treating device and method | |
EP2767585A1 (en) | Microbiological method of H2S removal from biogas | |
CN113636640B (en) | Biological trickling filter pilot test device and short-cut nitrification domestication method using same | |
Kim et al. | Performance of an immobilized cell biofilter for ammonia removal from contaminated air stream | |
Zhang et al. | Removal of nitric oxide from simulated flue gas via denitrification in a hollow-fiber membrane bioreactor | |
Morral et al. | A review of biotechnologies for the abatement of ammonia emissions | |
WO2020156371A1 (en) | Method for simultaneously removing high-load sulfur dioxide and nitrogen oxide in waste gas | |
CN106268291A (en) | Filter tower device and the method for biological desulphurization deodorization are dripped in a kind of biological desulphurization deodorization | |
CN1898003A (en) | Biological filter | |
Baltrenas et al. | Investigation of cleaning efficiency of a biofilter with an aeration chamber | |
Chen et al. | Abiotic and biological mechanisms of nitric oxide removal from waste air in biotrickling filters | |
CN106914127A (en) | A kind of method for coupling bacterium bacteria bed treatment of Nitrobenzene waste gas | |
CN100344347C (en) | Process for biological oxidation treatment of waste gas containing nitrogen oxide | |
Wei et al. | Performance and mechanism of nitric oxide removal using a thermophilic membrane biofilm reactor | |
Xue et al. | A pilot field-scale study on biotrickling filter treatment of NH3-containing odorous gases from organic waste composting plants | |
CN1194796C (en) | Biologic cleaning method for low-concentration organic waste gas | |
CN102091530A (en) | Bio-filtration deodorization method | |
Jianwei et al. | Performance of two biofilters with neutral and low pH treating off-gases | |
CN112705040A (en) | A exhaust gas purification device for atmospheric pollution administers | |
Wang et al. | Review of biofiltration-effect of support media on biofilter performance | |
CN101293179B (en) | Method for purifying organic matter waste gas by using waste timber biological mix liquid | |
CN111495169B (en) | Method for removing high-load nitrogen oxides in waste gas by biological method direct acidification |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071024 Termination date: 20141021 |
|
EXPY | Termination of patent right or utility model |