CN108126471A - The concentration photodissociation bioremediation of VOCs exhaust gas - Google Patents
The concentration photodissociation bioremediation of VOCs exhaust gas Download PDFInfo
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- CN108126471A CN108126471A CN201611089757.8A CN201611089757A CN108126471A CN 108126471 A CN108126471 A CN 108126471A CN 201611089757 A CN201611089757 A CN 201611089757A CN 108126471 A CN108126471 A CN 108126471A
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- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 21
- 238000006303 photolysis reaction Methods 0.000 title claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 15
- 230000001699 photocatalysis Effects 0.000 claims abstract description 12
- 239000005416 organic matter Substances 0.000 claims abstract description 11
- 238000007146 photocatalysis Methods 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 claims abstract description 9
- 239000002594 sorbent Substances 0.000 claims abstract description 8
- 238000010521 absorption reaction Methods 0.000 claims abstract description 7
- 239000003054 catalyst Substances 0.000 claims abstract description 7
- 239000000243 solution Substances 0.000 claims description 25
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 24
- 239000003610 charcoal Substances 0.000 claims description 17
- 239000002131 composite material Substances 0.000 claims description 17
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000002250 absorbent Substances 0.000 claims description 16
- 230000002745 absorbent Effects 0.000 claims description 16
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 14
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- 239000011259 mixed solution Substances 0.000 claims description 8
- 239000004408 titanium dioxide Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 229960000583 acetic acid Drugs 0.000 claims description 5
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 claims description 5
- 239000012362 glacial acetic acid Substances 0.000 claims description 5
- 239000012153 distilled water Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 238000001802 infusion Methods 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims 1
- 238000006555 catalytic reaction Methods 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 229910052719 titanium Inorganic materials 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000002306 biochemical method Methods 0.000 abstract description 2
- 238000003795 desorption Methods 0.000 description 7
- 239000003344 environmental pollutant Substances 0.000 description 7
- 231100000719 pollutant Toxicity 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 239000003463 adsorbent Substances 0.000 description 6
- 230000008929 regeneration Effects 0.000 description 6
- 238000011069 regeneration method Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 150000003384 small molecules Chemical class 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- GCNLQHANGFOQKY-UHFFFAOYSA-N [C+4].[O-2].[O-2].[Ti+4] Chemical compound [C+4].[O-2].[O-2].[Ti+4] GCNLQHANGFOQKY-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Classifications
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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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
-
- 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
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3416—Regenerating or reactivating of sorbents or filter aids comprising free carbon, e.g. activated carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3441—Regeneration or reactivation by electric current, ultrasound or irradiation, e.g. electromagnetic radiation such as X-rays, UV, light, microwaves
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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
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/804—UV light
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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Abstract
The present invention provides a kind of concentration photodissociation bioremediation of VOCs exhaust gas, step is as follows：A, the organic matter in gas is adsorbed using sorbing material, the clean gas direct emission after absorption；B, ultraviolet light under the effect of the catalyst, is irradiated sorbing material, and the polluter adsorbed on the sorbent is desorbed by photocatalysis, the sorbing material after reclaiming；C, the gas after being desorbed discharges after biofiltration is handled.Using the VOCs of concentration photodissociation Biochemical method atm number, it is that a kind of effect is good, invests low, low energy consumption, the method for non-secondary pollution.
Description
Technical field
The invention belongs to environmental protection industry (epi)s, are related to improvement and the Odor control of VOCs, and in particular to a kind of VOCs exhaust gas it is dense
Contracting photodissociation bioremediation.
Background technology
Many enterprises in process of production, can generate a large amount of VOCs and odorant pollutant, and ambient enviroment and scene are grasped
The health for making personnel causes larger impact.Due to large-minded, the cost of investment and processing cost of exhaust gas are all higher, at present
Common technology has physical treatment process, method of chemical treatment, biological treatment and catalytic oxidation.Physical treatment process is to utilize activity
The adsorbents such as charcoal, exhaust gas is adsorbed；Method of chemical treatment is carried out using acid, alkali or oxidant and the pollutant in exhaust gas
Chemical reaction；Biological treatment is that pollutant component is degraded using microorganism；Catalytic oxidation is the work in catalyst
Under, at a lower temperature, harmful combustible component in exhaust gas is subjected to oxygenolysis.
Since cost of investment is limited, single bioanalysis or catalytic oxidation, investment are used for the gas of atm number
Huge, enterprise is difficult to bear, therefore most enterprises are only taken at simple high-altitude dilution, chemical absorbing or activated carbon adsorption
Reason, although input cost is relatively low, can bring the secondary pollution of soda acid or discarded activated carbon, meanwhile, this single place
It is also limited to manage effect.
Invention content
In order to solve the above technical problem, the present invention provides a kind of concentration photodissociation bioremediation of VOCs exhaust gas,
Using the VOCs of concentration photodissociation Biochemical method atm number, it is that a kind of effect is good, invests low, low energy consumption, the side of non-secondary pollution
Method.
The present invention in order to achieve the above-mentioned object of the invention, adopts the following technical scheme that：
A kind of concentration photodissociation bioremediation of VOCs exhaust gas, step are as follows：
A, the organic matter in gas is adsorbed using sorbing material, the clean gas direct emission after absorption；
B, ultraviolet light under the effect of the catalyst, is irradiated sorbing material, and the polluter adsorbed on the sorbent passes through
Photocatalysis is desorbed, the sorbing material after reclaiming；
C, it is discharged after carrying out biofiltration processing to the gas after desorption.
Sorbing material adsorbs the organic matter in gas, and the clean gas direct emission after absorption, pollutant is being inhaled
Enclosure material surface is concentrated, and then by light-catalysed degradation and desorption, the tolerance after desorption greatly reduces, and is conducive to follow-up
After-treatment technique focuses on.
The polluter that adsorbent surface adsorbs is decomposed by the pollutant after absorption by Photocatalytic Regeneration technology
Small-molecule substance or carbon dioxide and water, adsorbent is regenerated after decomposition, is continuing with.Tail gas tolerance after decomposition subtracts
It is few, it is concentrated with respect to raw-gas.
Small molecule after being destroyed by photocatalysis enters subsequent biological treatment and carries out after-treatment, utilizes microorganism
Metabolism, under suitable environmental condition, be attached to the microorganism in filtrate medium using gaseous pollutant as carbon
Organic matter decomposition while sustaining life, is oxidized to the inorganic substances such as carbon dioxide and water, realizes thoroughly drop by source and energy
Solution, so as to have the function that purify exhaust gas.
Sorbing material of the present invention is nanometer titanium dioxide carbon/absorbent charcoal composite material.The sorbing material has specific
Structure type, have the characteristics that surface area is big, pressure drop is low, adsorption capacity be better than normal activated carbon, under the irradiation of ultraviolet light,
The in-situ regeneration of activated carbon can be realized again.
Preferably, the nano-titanium dioxide/absorbent charcoal composite material is prepared by collosol and gel-infusion process.
It is further preferred that the preparation method of nano-titanium dioxide/absorbent charcoal composite material is as follows：
Prepare solution A：Tetrabutyl titanate is slowly dropped into absolute ethyl alcohol, is uniformly mixed, forms solution A；
Prepare solution B：Glacial acetic acid and distilled water are added in absolute ethyl alcohol, are uniformly mixed, obtains solution B；
Solution A is slowly dropped into solution B, obtains mixed solution, activated carbon is immersed in the mixed solution, soak stagnant negative
It carries, drying is calcined to get to nano-titanium dioxide/absorbent charcoal composite material.
With tetrabutyl titanate [Ti (OC4H9)4] for predecessor, absolute ethyl alcohol (C2H5OH it is) solvent, glacial acetic acid (CH3COOH)
For chelating agent, TiO 2 sol is prepared.
Catalyst of the present invention is titanium dioxide.Ultraviolet light, can be with the generations such as O2, water under the action of titanium dioxide
Reaction generates OH and O2Deng OH and O2With very strong oxidisability, C-C keys, c h bond, C-O in organic matter can be destroyed
Key, C-N keys, O-H keys, N-H keys etc., generate the inorganic matters such as small molecule or carbon dioxide, water, and small molecule is easy to take off from activated carbon
It is attached, so as to which the adsorption capacity for making activated carbon is restored, realize the in-situ regeneration of activated carbon.
The beneficial effects of the present invention are：
1st, biofiltration process is that biologic packing material of the foul gas with inoculation membrane formation in flow process contacts, and gaseous pollutant will
It is first transferred in liquid phase or solid phase surface liquid film by gas phase, could be absorbed and degrade by surface microorganism in liquid phase or solid phase.Due to
By light-catalysed decomposition, small molecule is formed, is more advantageous to biodegradation.
2nd, the present invention, by adsorbent polluter desorption and initial breakdown, makes adsorbent by photocatalysis technology
Regeneration, is continuing with, and 90% regeneration rate is can reach within a hour, without regular replacement adsorbent, after concentration
Gas is degraded by biofilter by microbe.Whole process do not need to heating, low energy consumption.
3rd, the present invention under compound action, degrades to VOCs and makees by Adsorption Concentration, Photocatalytic Regeneration degradation and biodegradable
With fairly obvious, while cost of investment is low, and operating cost is few, and low energy consumption.
Description of the drawings
Fig. 1 is the process flow chart of the present invention.
Specific embodiment
The essentiality content of the present invention is described in further detail With reference to embodiment.
Embodiment 1
The concentration photodissociation bioremediation of a kind of VOCs exhaust gas, which is characterized in that step is as follows：
A, the organic matter in gas is adsorbed using sorbing material, the clean gas direct emission after absorption；
B, ultraviolet light under the effect of the catalyst, is irradiated sorbing material, and the polluter adsorbed on the sorbent passes through
Photocatalysis is desorbed, the sorbing material after reclaiming；
C, the gas after being desorbed discharges after biofiltration is handled.
Embodiment 2
The concentration photodissociation bioremediation of a kind of VOCs exhaust gas, which is characterized in that step is as follows：
A, the organic matter in gas is adsorbed as sorbing material using nano-titanium dioxide/absorbent charcoal composite material, inhaled
Attached clean gas direct emission；
B, ultraviolet light under the effect of the catalyst, is irradiated sorbing material, and the polluter adsorbed on the sorbent passes through
Photocatalysis is desorbed, the sorbing material after reclaiming；
C, the gas after being desorbed discharges after biofiltration is handled.
Embodiment 3
The concentration photodissociation bioremediation of a kind of VOCs exhaust gas, which is characterized in that step is as follows：
A, the organic matter in gas is adsorbed as sorbing material using nano-titanium dioxide/absorbent charcoal composite material, inhaled
Attached clean gas direct emission；
B, ultraviolet light is irradiated sorbing material under the action of titanium dioxide, and the polluter adsorbed on the sorbent leads to
Cross photocatalysis desorption, the sorbing material after reclaiming；
C, the gas after being desorbed discharges after biofiltration is handled.
Nano-titanium dioxide/the absorbent charcoal composite material is prepared by collosol and gel-infusion process.
Embodiment 4
The concentration photodissociation bioremediation of a kind of VOCs exhaust gas, which is characterized in that step is as follows：
A, the organic matter in gas is adsorbed as sorbing material using nano-titanium dioxide/absorbent charcoal composite material, inhaled
Attached clean gas direct emission；
B, ultraviolet light is irradiated sorbing material under the action of titanium dioxide, and the polluter adsorbed on the sorbent leads to
Cross photocatalysis desorption, the sorbing material after reclaiming；
C, the gas after being desorbed discharges after biofiltration is handled.
The preparation method of the nano-titanium dioxide/absorbent charcoal composite material is as follows：
Prepare solution A：Tetrabutyl titanate is slowly dropped into absolute ethyl alcohol, is uniformly mixed, forms solution A；
Prepare solution B：Glacial acetic acid and distilled water are added in absolute ethyl alcohol, are uniformly mixed, obtains solution B；
Solution A is slowly dropped into solution B, obtains mixed solution, activated carbon is immersed in the mixed solution, soak stagnant negative
It carries, drying is calcined to get to nano-titanium dioxide/absorbent charcoal composite material.
Embodiment 5
The concentration photodissociation bioremediation of a kind of VOCs exhaust gas, which is characterized in that step is as follows：
A, the organic matter in gas is adsorbed as sorbing material using nano-titanium dioxide/absorbent charcoal composite material, inhaled
Attached clean gas direct emission；
B, ultraviolet light is irradiated sorbing material under the action of titanium dioxide, and the polluter adsorbed on the sorbent leads to
Cross photocatalysis desorption, the sorbing material after reclaiming；
C, the gas after being desorbed discharges after biofiltration is handled.
The preparation method of the nano-titanium dioxide/absorbent charcoal composite material is as follows：
Prepare solution A：Tetrabutyl titanate is slowly dropped into absolute ethyl alcohol, is uniformly mixed, forms solution A；
Prepare solution B：Glacial acetic acid and distilled water are added in absolute ethyl alcohol, are uniformly mixed, obtains solution B；
Solution A is slowly dropped into solution B, obtains mixed solution, activated carbon is immersed in the mixed solution, soak stagnant negative
It carries, drying is calcined to get to nano-titanium dioxide/absorbent charcoal composite material.
Biofiltration processing of the present invention is conventional biofilter processing method.
Embodiment described above only expresses the specific embodiment of the present invention, and description is more specific and detailed, but can not
Therefore it is interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for those of ordinary skill in the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection model of the present invention
It encloses.
Claims (5)
1. the concentration photodissociation bioremediation of a kind of VOCs exhaust gas, which is characterized in that step is as follows：
A, the organic matter in gas is adsorbed using sorbing material, the clean gas direct emission after absorption；
B, ultraviolet light under the effect of the catalyst, is irradiated sorbing material, and the polluter adsorbed on the sorbent passes through
Photocatalysis is desorbed, the sorbing material after reclaiming；
C, the gas after being desorbed discharges after biofiltration is handled.
2. the concentration photodissociation bioremediation of VOCs exhaust gas according to claim 1, which is characterized in that the absorption
Material is nano-titanium dioxide/absorbent charcoal composite material.
3. the concentration photodissociation bioremediation of VOCs exhaust gas according to claim 2, which is characterized in that the nanometer
Titanium dioxide/active carbon composite material is prepared by collosol and gel-infusion process.
4. the concentration photodissociation bioremediation of VOCs exhaust gas according to claim 3, which is characterized in that nanometer titanium dioxide
The preparation method of titanium/absorbent charcoal composite material is as follows：
Prepare solution A：Tetrabutyl titanate is slowly dropped into absolute ethyl alcohol, is uniformly mixed, forms solution A；
Prepare solution B：Glacial acetic acid and distilled water are added in absolute ethyl alcohol, are uniformly mixed, obtains solution B；
Solution A is slowly dropped into solution B, obtains mixed solution, activated carbon is immersed in the mixed solution, soak stagnant negative
It carries, drying is calcined to get to nano-titanium dioxide/absorbent charcoal composite material.
5. the concentration photodissociation bioremediation of VOCs exhaust gas according to claim 1, which is characterized in that the catalysis
Agent is titanium dioxide.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110152481A (en) * | 2019-04-11 | 2019-08-23 | 南京大学环境规划设计研究院股份公司 | It is a kind of can in-situ regeneration VOCs adsorption photochemical catalysis and ozone cooperative purification method and device |
| CN114950123A (en) * | 2021-02-26 | 2022-08-30 | 河南正达环保科技有限公司 | System for purifying VOCs and malodorous gaseous pollutants in waste gas |
Citations (7)
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