CN101708425A - Method for biofiltration processing of soot exhaust gas on basis of roofing greening nutritive soil - Google Patents
Method for biofiltration processing of soot exhaust gas on basis of roofing greening nutritive soil Download PDFInfo
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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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- Treating Waste Gases (AREA)
Abstract
The invention provides a method for biofiltration processing of soot exhaust gas on basis of roofing greening nutritive soil, comprising the following steps: taking roofing greening vegetation and the nutritive soil thereof as biological filler; arranging a supporting layer and a gas distribution device below the biological filler; spraying nutrient solution onto the biological filler; and when liquid phase pH is 6.0-7.5 and temperature is 20-35 DEG C, processing soot exhaust gas. The method of the invention has the advantages of large biomass, high mass transfer efficiency, small possibility of blocking, easy operation and control and the like; the invention expands the application of the roofing greening engineering, combines roofing greening with the processing of soot exhaust gas with a biological method and saves operation cost and floor space.
Description
(1) technical field
The present invention relates to a kind of method based on the autochthonal thing filtration treatment of roofing greening nutritive oil flue waste gas.
(2) background technology
Having more than 300 kind of composition debirs in the oil flue waste gas at least, mainly is aliphatic acid, alkane, alkene, aldehydes, ketone, alcohol, ester, aromatic and heterocyclic compound etc.It is very big to human body harm to contain aldehyde compound in the oil smoke, often causes the various symptoms of eyes and respiratory mucosa.The oil smoke gas of higher concentration has lungs toxicity.Also exist the cytogenetics toxicant of different biological such as can causing gene mutation, dna damage, chromosome damage in the oil flue waste gas, not only have genetoxic, and have potential carcinogenicity.
External fume purifying isolation technics mainly contains inertial separation, washing, absorption, electrostatic precipitation, thermal oxide burning, catalyst purification etc.Domestic existing traditional purification of waste gas method has electrostatic method, absorption method, filtration method, liquid scrubbing method, the water smoke method of purification, inertial separation method, thermal oxide burning method etc.These methods or can not realize harmless treatment fully, or be exactly that expense is too high to oil flue waste gas, therefore exploitation efficiently, cheaply, eco-friendly purification of waste gas treatment technology is subject to people's attention day by day.
The process of biological treatment waste gas, essence be attached to the microorganism on the biologic packing material medium under the adapt circumstance condition, utilize pollutant in the waste gas as the carbon source and the energy, keep its vital movement, and they be decomposed into CO
2, H
2O and NO
3-wait the process of harmless inorganic matter, be a green environmental protection technique.The oil flue waste gas biologic treating technique is because of having advantages such as the incomparable expense of conventional method is cheap, environmentally friendly, becoming a new and high technology of promoting rapidly in the purification of waste gas field, be particularly useful for low concentration, than the improvement of the oil flue waste gas and the foul gas of atm number.
But in urban land today in short supply day by day, the oil flue waste gas treatment facility is set specially need occupies certain soil and space, this becomes the restraining factors of a restriction bioanalysis handling oil smoke waste gas.How, overcome the defective of traditional biological treatment system, rationally utilize soil and space, explore the oil flue waste gas bioremediation of the prospect that has more, become and propose starting point of the present invention at physical parameters such as exhaust gas constituents, temperature, concentration, humidity.
(3) summary of the invention
The bioreactor bacterial classification is single in order to solve in the existing exhaust gas treatment technology, the initial stage fluctuation of service, need deficiency such as special land occupation, the invention provides a kind of method based on the autochthonal thing filtration treatment of roofing greening nutritive oil flue waste gas.
The technical solution used in the present invention is:
A kind of method based on the autochthonal thing filtration treatment of roofing greening nutritive oil flue waste gas, described method comprises: with roof greening vegetation and nutrition soil thereof is biologic packing material, (distribution device generally is positioned in the middle of supporting layer and the biologic packing material layer to be provided with supporting layer and distribution device below the biologic packing material, also can be arranged in biologic packing material layer bottom), spraying nutrient solution on the biologic packing material, at liquid phase pH 6.0～7.5, under 20～35 ℃ of conditions of temperature, oil flue waste gas is handled, under the decomposition of the absorption of root system of plant and microorganism, pollutants from cooking fume be trapped and progressively oxidation Decomposition become CO
2, H
2O and other simple compounds.
Described oil flue waste gas pollutant is one of following or a few class mixture:
(1) aliphatic acid (common have oleic acid etc.); (2) alkanes (common 1. decane being arranged, 2. nonane, 3. 2,4-dimethyl heptane, 4. 3-ethyl-cyclohexane etc.); (3) olefines (commonly have 1., 3-methylcyclohexene, 2. 1-ethyl-5-methyl cyclopentene, 3. 1,3-octadiene, 4. 1-octene etc.); (4) aldehydes (common have 1. formaldehyde, 2. hexanal, 3. valeral etc.); (5) other compounds: comprise ketone, alcohol, ester, aromatic and heterocyclic compound etc.
Described distribution device is positioned at described biologic packing material layer bottom, and the gas distribution mouth down is provided with, and stops up to prevent fine particle from entering pipeline.
Described biologic packing material layer and supporting layer separate with geotextiles.
Described nutrition soil is mixed by cinder, loess, peat and the perlite of diameter 2～50mm.
Described biologic packing material need carry out biofilm earlier to be handled: bacterial classification and nutrient solution are sprayed on biologic packing material, and pending oil flue waste gas enters the biologic packing material layer by distribution device, carries out biofilm and cultivated 10～18 days under liquid phase pH 6.0～7.5,20～35 ℃ of conditions of temperature.
Used bacterial classification is one of following or the mixture of its any two kinds (containing) above arbitrary proportion in the biofilm incubation: 1. laboratory single culture; 2. activated sludge or activated sludge supernatant; 3. the soil around the exhaust emission or the extract of water; 4. microorganism formulation.
Described nutrient solution contains certain proportion N, P, K, Mg, Ca, Fe and other micro-solution for what routine was used for biological processor for what bacterial strain provided nutrient.
Based on said method, the present invention has simulated a kind of bioreactor based on the roof greening engineering, arrange supporting layer, cloth gas port and packing layer in this reactor, this packing layer is simulated the nutrition soil structure and the composition of the required configuration of roof greening fully, carry out the simulated oil smoke waste gas simultaneously and handle experiment, concrete technological process is referring to Fig. 1.
Described bioreactor comprises oil smoke generator, main body reactor, spray system, circulation fluid and auxiliary watch-dog etc.The oil smoke generator carries out stripping by blower fan under the oil bath condition, pump into the main body reactor, and after the physics in reactor, the biological agent, Purge gas directly effluxes.Described main body reactor top is provided with the bacterial classification inlet, and the bottom is provided with exhaust gas entrance and the outlet of bacterium liquid, and described exhaust gas entrance is by waste gas duct and above-mentioned blower fan conducting.
Be provided with gas pipe in the described main body reactor, described gas pipe links to each other with described exhaust gas entrance.
Described waste gas duct is provided with control valve and flowmeter, and gas pipe adopts the inversion type gas distribution in the main body reactor, in case fine particle enters and stops up; Be provided with temperature controller in the main body reactor, circulation fluid interpolation process is provided with the pH controller, is convenient to control reaction condition.
Described nutrition soil filling-material structure layer reactor can be provided with lagging facility.
The beneficial effect of pollutant is mainly reflected in the autochthonal thing filtration treatment of the roofing greening nutritive of the present invention oil flue waste gas:
(1) separates with geotextiles between supporting layer and the nutrition soil layer, guaranteed the flow of holding of nutrition soil layer, blocking-up divot downward layer growth, purification of waste gas have better been guaranteed the qualified discharge of oil flue waste gas by the suction-operated of root system of plant and the biodegradation of microorganism.
(2) have advantages such as biomass is big, mass-transfer efficiency is high, difficult obstruction, easy operation control.
(3) application of roof greening engineering is expanded, realize that roof greening combines with bioanalysis handling oil smoke waste gas, and saved operating cost and taken up an area of the space.
(4) simple in structure, easy to use, adaptability is strong, and is practical, has the very great prospect of marketing.
(4) description of drawings
Fig. 1 is the bioreactor device schematic diagram based on the roof greening engineering of simulation; 1 is air pump, and 2 is flowmeter, and 3 is the oil smoke generator, and 4 is thermometer, and 5 is surge tank, and 6 is intake valve, and 7 is reactor, and 8 is air distribution plate, and 9 is the roof greening layer, 10 spray systems, and 11 is circulating pump, and 12 is circulation fluid, and 13 are the pH monitoring, and 14 is detector.
Fig. 2 is biologic packing material layer (roof greening layer) sectional view of oil flue waste gas biological treatment of the present invention.
(5) specific embodiment
The present invention is described further below in conjunction with specific embodiment, but protection scope of the present invention is not limited in this:
Referring to Fig. 1, oil flue waste gas biological treatment device based on the roof greening engineering, comprise that mainly the simulated oil smoke waste gas produces system (1～6), main body reactor (7), air distribution plate (8), roof greening layer (9) and spray system (10) are arranged in the main body reactor, and nutrient solution adds liquid systems (11～13) and tail-gas analyzer (14).
During actual the use, to take from the activated sludge supernatant of municipal sewage plant and nutrient solution adds liquid systems (11～13) by nutrient solution and enters main body reactor (7), waste gas produces system (1～6) through oil flue waste gas, enter main body reactor (7) by exhaust gas entrance, through evenly air inlet of air distribution plate (8), the cultivation temperature is monitored by temp probe, nutrient solution adds the pH of liquid systems by the pH probe monitors, after cultivating about 15 days, the oil flue waste gas treatment effeciency is continual and steady, and the biological treatment device of oil flue waste gas starts to be finished.
Embodiment 1:
Embodiment of the present invention and operation principle are: contain the oil flue waste gas that VOC concentration is 15.0mg/L, 20.0mg/L, 25.0mg/L, 30.0mg/L, 35.0mg/L and 40.0mg/L, carry out biofiltration processing experiment based on roof greening engineering nutrition soil layer, be divided into supporting layer, gas distribution insulating course, nutrition soil layer and divot in the main body reactor for the treatment of apparatus.Wherein the nutrition soil layer is made up of multiple material that (cinder, loess, peat, perlite 1: 1: 1 by volume: 0.2 mixes, hybrid particles diameter 2～50mm), nutrient solution soaks into whole nutrition soil layer, exhaust gas containing oil smoke enters from the bottom, disperse to form micro-bubble by the inversion type air distribution plate, fully contact with biomembrane on the nutrition soil layer, finish mass-transfer progress after, under the oxygenolysis of microorganism, pollutant is broken down into CO
2, H
2O and other simple compounds, the purpose of realization waste gas purification.The nutrition soil layer time of staying (EBRT) is 25s, pH value 6.5～7.5, and 25～35 ℃ of temperature, the exhaust-gas treatment result of various inlet VOC concentration sees table 1 for details.
Table 1: the oil flue waste gas result table of various inlet VOC concentration
Table 1 is the result show, the present invention is based on roofing greening nutritive soil bioanalysis handling oil smoke waste gas, and this technology can effectively be removed and contain the VOC oil flue waste gas, and the clearance of VOC is respectively 96.1%, 95.2%, 93.4%, 92.1%, 90.5% and 83.6%.
Embodiment 2:
Embodiment of the present invention and operation principle are: other condition is under the 30.0mg/L with embodiment 1 in VOC concentration, and the influence of the oil flue waste gas result of the different time of staying (EBRT) sees table 2 for details.
Table 2: the oil flue waste gas result table of the different time of staying (EBRT)
Table 2 is the result show, is 10s in the time of staying (EBRT), 15s, and 20s, 25s, under 30s and the 35s, this technology is respectively 76.5%, 84.5%, 90.5%, 92.7%, 94.2% and 96.3% to the clearance of VOC in the oil smoke.
Embodiment 3:
Embodiment of the present invention and operation principle are: other condition is with embodiment 1, and the time of staying (EBRT) is 20s, and VOC concentration is 30.0mg/L, and the influence of the oil flue waste gas result of different temperatures sees table 3 for details.
Table 3: the oil flue waste gas result table under the different temperatures
Table 3 is the result show, 10 ℃ of temperature, 15 ℃, 20 ℃, 25 ℃, 30 ℃, 35 ℃, 40 ℃, 45 ℃, 50 ℃ the time, this technology is respectively 64.5%, 72.5%, 80.5%, 88.4%, 92.5%, 93.6%, 70.3%, 62.6% and 52.1% to the clearance of oil smoke.
Embodiment 4:
Use the oil flue waste gas of handling certain restaurant unit based on the biofiltration device of roofing greening nutritive soil layer, wherein VOC concentration is 30.0mg/L in the oil smoke, oil flue waste gas enters from the filter bottom, form micro-bubble by the inversion type diffuser, fully contact with the liquid phase biomembrane with biomembrane on the filler, finish gas phase to liquid phase, arrive biomembranous mass transfer again, last under the oxygenolysis of biology, the oxidized CO that resolves into of compound
2, H
2O and other simple compounds, the purpose of realization waste gas purification.The time of staying (EBRT) is respectively 20,30s, liquid phase PH valve 6.5～7.5, and 25～35 ℃ of temperature, the treatment effeciency of VOC is respectively 92.6% and 94.1% in the oil flue waste gas.Oil flue waste gas after the processing and VOC concentration wherein all reach the concerned countries standard.
Claims (6)
1. method based on the autochthonal thing filtration treatment of roofing greening nutritive oil flue waste gas, described method comprises: with roof greening vegetation and nutrition soil thereof is biologic packing material, the biologic packing material below is provided with supporting layer and distribution device, spraying nutrient solution on the biologic packing material, under liquid phase pH6.0～7.5,20～35 ℃ of conditions of temperature, oil flue waste gas is handled.
2. the method for claim 1 is characterized in that described distribution device is positioned at described biologic packing material layer bottom, and the gas distribution mouth down is provided with.
3. the method for claim 1 is characterized in that described biologic packing material layer and supporting layer separate with geotextiles.
4. the method for claim 1, it is characterized in that described nutrition soil was by cinder, loess, peat and the perlite of diameter 2～50mm 1: 1: 1 by volume: 0.2 mixes.
5. the method for claim 1, it is characterized in that described biologic packing material carries out biofilm earlier and handles: bacterial classification and nutrient solution are sprayed on biologic packing material, pending oil flue waste gas enters the biologic packing material layer by distribution device, carries out biofilm and cultivated 10～18 days under liquid phase pH6.0～7.5,20～35 ℃ of conditions of temperature.
6. method as claimed in claim 5 is characterized in that described bacterial classification is one of following or wherein two or more mixture: 1. laboratory single culture; 2. activated sludge or activated sludge supernatant; 3. the soil around the exhaust emission or the extract of water; 4. microorganism formulation.
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| CN200910155161A CN101708425A (en) | 2009-12-07 | 2009-12-07 | Method for biofiltration processing of soot exhaust gas on basis of roofing greening nutritive soil |
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|---|---|---|---|
| CN200910155161A CN101708425A (en) | 2009-12-07 | 2009-12-07 | Method for biofiltration processing of soot exhaust gas on basis of roofing greening nutritive soil |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102512947A (en) * | 2011-12-27 | 2012-06-27 | 广东省南方环保生物科技有限公司 | Combined energy-saving deodorizing device |
| CN103396249A (en) * | 2013-08-09 | 2013-11-20 | 邹飞剑 | Preparation method of simple and long-acting nutrient soil |
| CN105688549A (en) * | 2016-04-21 | 2016-06-22 | 郑州大学 | Waste gas purifying device and oil fume waste gas purifying system |
| CN109877142A (en) * | 2019-03-29 | 2019-06-14 | 安徽安特治废弃物资源化研究中心有限公司 | A kind of house refuse aerobic fermentation system and fermentation process with self-purification function |
| CN110917868A (en) * | 2019-12-25 | 2020-03-27 | 余玉珍 | Liquid rotary active sludge treatment waste gas purification device |
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2009
- 2009-12-07 CN CN200910155161A patent/CN101708425A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102512947A (en) * | 2011-12-27 | 2012-06-27 | 广东省南方环保生物科技有限公司 | Combined energy-saving deodorizing device |
| CN103396249A (en) * | 2013-08-09 | 2013-11-20 | 邹飞剑 | Preparation method of simple and long-acting nutrient soil |
| CN105688549A (en) * | 2016-04-21 | 2016-06-22 | 郑州大学 | Waste gas purifying device and oil fume waste gas purifying system |
| CN105688549B (en) * | 2016-04-21 | 2019-01-15 | 郑州大学 | A kind of waste gas purification apparatus and purification of waste gas system |
| CN109877142A (en) * | 2019-03-29 | 2019-06-14 | 安徽安特治废弃物资源化研究中心有限公司 | A kind of house refuse aerobic fermentation system and fermentation process with self-purification function |
| CN110917868A (en) * | 2019-12-25 | 2020-03-27 | 余玉珍 | Liquid rotary active sludge treatment waste gas purification device |
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Application publication date: 20100519 |