CN201384916Y - Photochemical catalysis and microorganism combined equipment for treating industrial organic waste gas - Google Patents
Photochemical catalysis and microorganism combined equipment for treating industrial organic waste gas Download PDFInfo
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- CN201384916Y CN201384916Y CN200920051842U CN200920051842U CN201384916Y CN 201384916 Y CN201384916 Y CN 201384916Y CN 200920051842 U CN200920051842 U CN 200920051842U CN 200920051842 U CN200920051842 U CN 200920051842U CN 201384916 Y CN201384916 Y CN 201384916Y
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- exhaust gas
- organic exhaust
- microorganism
- industrial organic
- photocatalysis
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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 utility model provides photochemical catalysis and microorganism combined equipment for treating industrial organic waste gas; the equipment comprises a gas collection hood, a bag type dust collector, a photocatalytic reactor and a biological trickling filtration tower; by adopting the utility model, total suspended particulate matters and volatile organic compounds in the organic waste gas can be effectively removed. The equipment has compact assembly and small occupying area, microorganism culture medium is used in a circulating way by a circulating water tank of the biological trickling filtration tower, thereby not causing secondary pollution to the environment and reducing the cost.
Description
Technical field
The utility model relates to a kind of equipment of handling the organic exhaust gas method, particularly a kind of photocatalysis and microorganism coupling equipment of handling industrial organic exhaust gas.
Background technology
Organic pollution problem has become hot issue at present in the organic exhaust gas of photocatalysis technology improvement in recent years.Organic exhaust gas comprises volatile organic matter, as 3 benzene waste gas etc., and semi-volatile organic matter, as polycyclic aromatic hydrocarbon, PBDE etc.Trace murder by poisoning organic pollution is lower owing to its concentration in the organic exhaust gas, be difficult to fully contact in subsequent process and remove, thereby it is more and difficult relatively to make that some control technologys spend.There are certain potential advantages in gas-solid phase photochemical catalytic oxidation to removing micro quantity organic pollutant.But,, and might in the process of reaction, generate the intermediate product more hypertoxic more than former reactant because the reaction rate of gas-solid phase photochemical catalytic oxidation is slower.Therefore, for the enriching low-concentration noxious material in photocatalyst surface with improve the photochemical catalyst catalytic efficiency and prevent to react in the bigger micro-intermediate by-products of toxicity that generates be diffused in the atmospheric environment, the topmost measure that the researcher takes is to use the bigger material of specific area, adds on the nano titanic oxide catalyst as additive as active carbon.This measure has improved the catalytic efficiency and the service life of photochemical catalyst effectively.But, in the big organic exhaust gas processing procedure of flow since organic exhaust gas in photocatalytic oxidation device because the time of staying fall short of, cause the light-catalyzed reaction agent can not be effectively, the organic matter in the oxidation gaseous effluent more fully.In addition, along with the time lengthening of photocatalyst treatment organic exhaust gas, the catalytic efficiency of photochemical catalyst still can decrease along with the increase of handling load.
Summary of the invention
The utility model purpose is to overcome the deficiencies in the prior art, and a kind of photocatalysis and microorganism coupling equipment of handling industrial organic exhaust gas is provided.
The purpose of this utility model is achieved through the following technical solutions:
A kind of photocatalysis and microorganism coupling equipment of handling industrial organic exhaust gas comprises gas skirt, sack cleaner, photo catalysis reactor and bio-trickling filter; Gas skirt, sack cleaner, photo catalysis reactor and bio-trickling filter link to each other successively by pipeline; Wherein, be connected to wind speed Pressure gauge and blower fan between sack cleaner and the photo catalysis reactor successively.
In order to realize the utility model better, between described gas skirt and sack cleaner, cooling device is set.
Described photo catalysis reactor is for flowing through the formula photo catalysis reactor, and detailed structure is seen ZL200420088717.8, and photochemical catalyst wherein is the nano-TiO that loads on the NACF silk
2Photochemical catalyst or nano-ZnO-SnO
2Compound oxide photocatalyst.
Described bio-trickling filter is common bio-trickling filter, and inside is provided with 1～6 layer of packing layer.
Described packing layer is made up of microorganism and filler, and microorganism wherein is the efficient dominant bacteria B350 of american commerceization; Filler wherein be can load the organic porous aggregate (polyurethane foam, plastics porous microsphere a kind of or two kinds), a kind of or two kinds of mixtures of inorganic porous filler (a kind of or at least two kinds of mixtures of porous ceramic grain, Raschig ring or active carbon) of microorganism.
Described filler is preferably the mixture of Raschig ring and porous ceramic grain especially.
Sack cleaner of the present utility model can effectively be removed the particle in the waste gas, thereby reduces particle covering and intoxication photochemical catalyst.Particularly cool off by cooling device when industrial organic exhaust gas elder generation, make the industrial organic exhaust gas cooling reach treatment temperature, again through the sack cleaner dedusting, the particulate matter removal efficiencies greater than 2.5 μ m in the waste gas reaches more than 95%.The blower fan that is provided with between sack cleaner and the photo catalysis reactor can provide the flow velocity of power and control industrial organic exhaust gas, the flow velocity size of industrial organic exhaust gas can determine organic exhaust gas effectively to stop and the reaction time on catalyst, thereby influences the treatment effect of organic exhaust gas.The NACF silk of photo catalysis reactor helps organic matter fast enriching in the industrial organic exhaust gas on the surface of photochemical catalyst, is particularly conducive to the processing to the big industrial organic exhaust gas of flow.Semiconductor light-catalyst can produce the OH (hydroxyl radical free radical) with very strong oxidability through exciting under the irradiation of uviol lamp, OH can non-selectivity all organic matters of oxidation industrial organic exhaust gas, being decomposed into small organic molecule or mineralising is nontoxic CO
2And H
2O, small organic molecule help absorption, the metabolism of microorganism.Mass transport process between gas, liquid takes place when the organic matter in the industrial organic exhaust gas is again through the packing layer in the bio-trickling filter then, in the microorganism liquid film of filling surface, adsorbed metabolism by microorganism, a metabolin part that produces is dissolved in liquid phase, and some is (as CO
2) will transfer to gas phase from liquid phase.After the photocatalysis and microorganism coupling equipment clean of most organic in the industrial organic exhaust gas by the processing industrial organic exhaust gas, finally be broken down into nontoxic CO
2And H
2O.Wherein, can select the microorganism that can decompose at the organic exhaust gas component according to the component of industrial organic exhaust gas, be incubated at can the filler of load microorganism on, have the filler of microorganism to pack in the bio-trickling filter cultivation, thereby obtain packing layer.
The utility model has following advantage and beneficial effect with respect to prior art:
(1) the utility model combination is compact, floor space is little, and microbiological culture media recycles by the circulating water chennel of bio-trickling filter, not only can not cause secondary pollution to environment, and reduce cost;
(2) handling in the industrial organic exhaust gas process by the utility model, the organic matter degradation that act as organic exhaust gas of photo catalysis reactor becomes little molecule, thereby the microorganism that helps in the bio-trickling filter packing layer further absorbs, is degraded into nontoxic CO by metabolism to the residual harmful pollutant of organic exhaust gas
2And H
2O improves the treatment effeciency of the utility model to the organic exhaust gas residual organic matter.Show according to test result, adopt photocatalysis and microorganism coupling equipment that total treatment effeciency of chemical industry workshop organic exhaust gas benzene series thing is reached more than 99%.
Description of drawings
Fig. 1 is photocatalysis and the microorganism coupling device structure schematic diagram that is used to handle industrial organic exhaust gas.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment 1
Handle the photocatalysis and the microorganism coupling equipment of industrial organic exhaust gas: as shown in Figure 1, photocatalysis and microorganism coupling equipment by gas skirt 1, valve 2, sack cleaner 3, flow through formula photo catalysis reactor 6 (detailed structure is seen ZL200420088717.8) and bio-trickling filter 7 and link to each other successively by pipeline, wherein, be connected to wind speed Pressure gauge 4 and blower fan 5 between sack cleaner 3 and the photo catalysis reactor 6 successively.The described photochemical catalyst fixed bed that flows through formula photo catalysis reactor 6 is 5 layers, and the fixed bed size is 500 * 450mm, nano-ZnO-SnO
2Compound oxide photocatalyst is carried on the NACF silk.Described bio-trickling filter 7 is the stainless cylinder of steel of 2L, internal diameter is 400mm, structure is that the top is disposed with waste gas inlet, air intake control valve door, water-distributing device from top to bottom, the bottom is provided with gas outlet 8, the bio-trickling filter 7 inner packing layers that are of five storeys that are provided with, the packing layer interlamellar spacing is 300mm, the outer setting circulating water chennel, under the effect of water pump, the liquid of bio-trickling filter 7 bottoms can evenly spray liquid downwards by water-distributing device by circulating water chennel.Between gas skirt 1 and sack cleaner 3, cooling device is set.
It is that 4: 6 size is that the Raschig ring of 12 * 12 * 3mm and porous ceramic grain mixture that the particle diameter diameter is 5～6mm mix by mass ratio that the preparation of bio-trickling filter packing layer: 1L is in the efficient dominant bacteria B350 of the american commerceization bacterium liquid of exponential phase and 2Kg; add B350 culture of strains base to 8L; logical oxygen; make dissolved oxygen DO constant about 4ppm; cultivated 3 days, and obtained the Raschig ring and the porous ceramic grain of microorganism colonization.With the Raschig ring of microorganism colonization and the bio-trickling filter 7 of porous ceramic grain load map 1, form packing layer, floor height is 120mm.
Handle the photocatalysis of industrial organic exhaust gas and the operation of microorganism coupling equipment: by gas skirt 1 with 200m
3The speed of/h is collected industrial organic exhaust gas (described industrial organic exhaust gas is a benzene series thing industrial organic exhaust gas), again 95% overall suspended pellet in sack cleaner 3 removal waste gas.Organic exhaust gas after the dedusting is regulated organic exhaust gas by blower fan 5 and is entered the flow velocity that flows through formula photo catalysis reactor 6, with 200m
3The speed of/h enters and flows through in the formula photo catalysis reactor 6.Then organic exhaust gas is again with 200m
3/ h enters in the bio-trickling filter 7, makes industrial organic exhaust gas with after the carrying out of microorganism effectively contacts, and discharges the industrial organic exhaust gas after handling.The bio-trickling filter circulation fluid is a B350 culture of strains base, stops 8min after the circulation fluid spray is set to spray 20min, circulation repeatedly, and flow is 80L/h.Regularly gather the waste gas sample respectively at photo catalysis reactor gas outlet valve 2 and gas outlet 8 during test is carried out, analyze to measure photocatalysis and microorganism coupling equipment treatment effect to industrial organic exhaust gas.Handle the photocatalysis of industrial organic exhaust gas and the initial period of microorganism coupling device start, after the photocatalysis total benzene series thing being removed efficient is 88.6%, and total treatment effeciency is 96.1% after the process microbial degradation.Photocatalysis and the operation of microorganism coupling equipment are after one month, and it is 88.0% that photocatalysis is removed efficient to total benzene series thing, and total treatment effeciency is 99.5% after the process microbial degradation.This is because initial stage catalyst and uviol lamp all are in best period, and photocatalysis efficiency is higher, but this moment, microorganism was in the domestication stage, and microorganism is in the biofilm phase, and it is best that microbiological treatment efficient fails to reach.And the photocatalysis of processing industrial organic exhaust gas and the operation of microorganism coupling equipment are after one month, microorganism success biofilm, therefore later stage photocatalysis and microorganism coupling equipment increase to the removal efficient of benzene series thing, reached substantially the efficient stable of benzene series thing in the waste gas is removed fully.This shows, no matter be at the initial stage of handling or in the later stage, photocatalysis technology and microbial technique all can cooperate the efficient removal that reaches organic exhaust gas well.
The foregoing description is the utility model preferred implementation; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spiritual essence of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection domain of the present utility model.
Claims (4)
1, a kind of photocatalysis and microorganism coupling equipment of handling industrial organic exhaust gas, it is characterized in that: described equipment comprises gas skirt, sack cleaner, photo catalysis reactor and bio-trickling filter; Gas skirt, sack cleaner, photo catalysis reactor and bio-trickling filter link to each other successively by pipeline; Wherein, be connected to wind speed Pressure gauge and blower fan between sack cleaner and the photo catalysis reactor successively.
2, the photocatalysis of processing industrial organic exhaust gas according to claim 1 and microorganism coupling equipment is characterized in that: between described gas skirt and the sack cleaner cooling device is set.
3, the photocatalysis of processing industrial organic exhaust gas according to claim 1 and microorganism coupling equipment, it is characterized in that: described photo catalysis reactor is for flowing through the formula photo catalysis reactor.
4, the photocatalysis of processing industrial organic exhaust gas according to claim 1 and microorganism coupling equipment, it is characterized in that: the inside of described bio-trickling filter is provided with 1～6 layer of packing layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920051842U CN201384916Y (en) | 2009-02-27 | 2009-02-27 | Photochemical catalysis and microorganism combined equipment for treating industrial organic waste gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920051842U CN201384916Y (en) | 2009-02-27 | 2009-02-27 | Photochemical catalysis and microorganism combined equipment for treating industrial organic waste gas |
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| Publication Number | Publication Date |
|---|---|
| CN201384916Y true CN201384916Y (en) | 2010-01-20 |
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|---|---|---|---|
| CN200920051842U Expired - Fee Related CN201384916Y (en) | 2009-02-27 | 2009-02-27 | Photochemical catalysis and microorganism combined equipment for treating industrial organic waste gas |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102671615A (en) * | 2012-05-11 | 2012-09-19 | 浙江大学 | Raschig ring and porous medium combined biologic filling |
| CN103223291A (en) * | 2013-05-17 | 2013-07-31 | 北京帝力伟业科技开发有限公司 | System and process for treating waste gas in chemical industry by utilizing catalytic oxidization and biological filtration |
| WO2018032806A1 (en) * | 2016-08-16 | 2018-02-22 | 中电建水环境治理技术有限公司 | Multi-stage purification treatment system for tail gas from manufacturing ceramic by carbonization of sludge from bottom of river or lake |
-
2009
- 2009-02-27 CN CN200920051842U patent/CN201384916Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102671615A (en) * | 2012-05-11 | 2012-09-19 | 浙江大学 | Raschig ring and porous medium combined biologic filling |
| CN103223291A (en) * | 2013-05-17 | 2013-07-31 | 北京帝力伟业科技开发有限公司 | System and process for treating waste gas in chemical industry by utilizing catalytic oxidization and biological filtration |
| WO2018032806A1 (en) * | 2016-08-16 | 2018-02-22 | 中电建水环境治理技术有限公司 | Multi-stage purification treatment system for tail gas from manufacturing ceramic by carbonization of sludge from bottom of river or lake |
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| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20100120 Termination date: 20150227 |
|
| EXPY | Termination of patent right or utility model |