CN107469586A - A kind of plasma organic exhaust gas purifying system integrated with biofilter and method - Google Patents
A kind of plasma organic exhaust gas purifying system integrated with biofilter and method Download PDFInfo
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- CN107469586A CN107469586A CN201710904127.XA CN201710904127A CN107469586A CN 107469586 A CN107469586 A CN 107469586A CN 201710904127 A CN201710904127 A CN 201710904127A CN 107469586 A CN107469586 A CN 107469586A
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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
- B01D53/32—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 electrical effects other than those provided for in group B01D61/00
- B01D53/323—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 electrical effects other than those provided for in group B01D61/00 by electrostatic effects or by high-voltage electric fields
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
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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
- B01D53/34—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
- B01D53/85—Biological processes with gas-solid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0258—Other waste gases from painting equipments or paint drying installations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/818—Employing electrical discharges or the generation of a plasma
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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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- General Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
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- Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Treating Waste Gases (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of plasma organic exhaust gas purifying system integrated with biofiltration and method.The organic exhaust gas purifying system includes spraying system, plasma reaction system and biological filter system；Wherein, the spray equipment of spraying system, the plasma reactor of plasma reaction system, the biofilter of biological filter system are from top to bottom set in turn in a retort.The organic exhaust gas purifying system of the present invention is integral type structure, use that combines up and down to be arranged in a reactor plasma reactor and biofilter, huge cost is not increased while purification capacity can be improved under the less pressure loss, the advantages of plasma and biofilter can be kept each, and realize complementary coordinative role, obvious processing effect, stably, anti- load impact ability is strong, and system bulk can be reduced significantly, reduce floor space, it is simple in construction, be easily installed, effectively reduce cost.
Description
Technical field
The invention belongs to technical field of waste gas treatment.It is integrated with biofiltration more particularly, to a kind of plasma
Organic exhaust gas purifying system and method.
Background technology
In industrial processes, especially cover with paint, lacquer, colour wash, etc. production process in can produce substantial amounts of organic exhaust gas, exist complicated component,
The features such as air quantity is unstable, concentration is low so that exhaust-gas treatment difficulty is big, cost is high.Due to lacking effective treatment measures, much
Enterprise uses direct high altitude discharge substantially.Again because its concentration is less than discharge standard, the real-time detection difficulty of its concentration of emission is high, ring
Guarantor department is typically difficult to supervise, the place high to some environmental requirements, and enterprise's generally use charcoal absorption method deals with inspection.
Therefore serious environment and atmosphere pollution and resources loss are caused.
At present, the method for cleaning organic waste gas include absorption method, absorption process, Production by Catalytic Combustion Process, bioanalysis, at plasma
Logos, photooxidation catalysis method etc., wherein, bioanalysis and plasma processing method are more common processing methods.Biofiltration process
It is good to the removal effect of small molecule aldehyde, ketone, fat etc., almost can be degradable into harmless small molecule；It is but existing
It is generally larger that biofiltration reactor by self reason is influenceed floor space in actual applications, and is continuous stream process, right
In the waste gas of difficult for biological degradation, its treatment effect is bad or not thoroughly, therefore can only typically handle low concentration is easy to biology
The organic exhaust gas of degraded, the scope of application are smaller.And plasma reactor small volume, initial installation cost are low, it is easy to basis
Venting quality matter controlling switch, the efficiency high for the VOCs that degrades, but caused small molecule by-product is more, produces pollution again.
The content of the invention
The technical problem to be solved in the present invention is the defects of overcoming existing VOCs treatment technology and deficiency, by plasma
Reactor according and biofilter are designed in the way of combining successively up and down in a reactor, are reduced significantly system bulk
And the residence time is reduced, the system will not increase huge flower while purification capacity can be improved under the less pressure loss
Take, the advantages of plasma and biofilter can be kept each, and realize complementary coordinative role, single creature filtering can be handled
The not treatable organic exhaust gas of system.
It is an object of the invention to provide a kind of plasma organic exhaust gas purifying system integrated with biofiltration.
It is a further object of the present invention to provide a kind of plasma organic waste-gas purification method integrated with biofiltration.
Above-mentioned purpose of the present invention is achieved through the following technical solutions：
The invention provides a kind of plasma organic exhaust gas purifying system integrated with biofiltration, it is characterised in that bag
Include spraying system, plasma reaction system and biological filter system；Wherein, the spray equipment of spraying system, plasma are anti-
The plasma reactor of system, the biofilter of biological filter system is answered from top to bottom to be set in turn in a retort
In.
Specifically, the spraying system includes injector（1）, blower fan（5）And water pump（6）, plasma reaction system bag
Include plasma reactor（2）And high-tension transformer（9）, biological filter system includes biofilter（3）, tank（4）And battalion
Nutrient solution supply（7）With bubble supply（8）.
Preferably, injector（1）, plasma reactor（2）, biofilter（3）And tank（4）From top to bottom successively
It is arranged in a retort；Blower fan（5）, water pump（6）, nutrient solution supply（7）With bubble supply（8）Outside retort
Portion, blower fan（5）With injector（1）Connection, water pump（6）Pass through pipeline and injector respectively（1）And tank（4）Connection, nutrient solution
Supply（7）With bubble supply（8）And tank（4）Connection, high-tension transformer（9）With plasma reactor（2）Connection；
Other tank（4）Gas vent is provided with the upper end of side wall.
Preferably, the nutrient solution supply（7）With bubble supply（8）Connecting line on be provided with valve.
Preferably, the water pump（6）With injector（1）Connecting line access blower fan（5）With injector（1）Connecting tube
Lu Shang.
Preferably, the plasma reactor（2）Positioned at injector（1）The underface of tail end is a kind of low temperature etc. from
Daughter reactor.Such as typical rf (discharge) plasma, corona pulse, dielectrically impeded discharge or gliding arc discharge plasma
Body.
Preferably, the biofilter（3）Positioned at plasma reactor（2）Underface.
Preferably, the plasma reactor（2）Several can be set side by side with, corresponding injector（1）Spray
Head has several.
Preferably, the nutrient solution supply（7）There can be several.
In above-mentioned organic exhaust gas purifying system, the effect of each part is as follows：
Blower fan：For conveying organic exhaust gas to injector.
Injector：For inputting organic exhaust gas and recirculated water to system.
Plasma reactor：The first step for organic exhaust gas is handled, i.e., plasma technique is handled.
Biofilter：For the second step processing of organic exhaust gas after plasma technique processing, i.e., further biological mistake
The processing of filter method.
Tank：It is placed under biofilter, for storing the water from biofilter outflow.
Water pump：For the water circulation stored in the sink to be delivered into injector.
Nutrient solution supply and bubble supply：For supplying microbial nutrient solution and bubble, microorganism can be ensured at any time
Activity, the problems such as microbial activity reduces when waste gas treatment equipment interval is runed is can solve the problem that, avoids the fluctuation for the treatment of effect, is resisted
Load impact ability is stronger.
The present invention also provides a kind of plasma the organic waste-gas purification method integrated with biofiltration, by organic exhaust gas
Spraying system is inputted, the plasma reactor of spray to underface carries out first step processing, and the waste gas after first step processing is straight
Tap into biological filter system immediately below plasma reactor and carry out second step processing, the waste gas after purified treatment is from gas
Outlet discharge, while by the liquid circulation in the tank immediately below biofilter to spraying system, and supplement into tank micro-
Biological nutrient liquid and bubble.
Specifically, the organic waste-gas purification method is to utilize the above-mentioned plasma organic waste integrated with biofiltration
Gas cleaning system is handled：Organic exhaust gas purifying system is opened, organic exhaust gas is constantly inputted injector, organic waste by blower fan
Gas is sprayed the processing by plasma reactor and biofilter successively, and the gas after processing is discharged from gas vent；
The water pump of operation is constantly by the liquid circulation in tank to injector simultaneously, and nutrient solution supply and bubble supply are constantly
Microbial nutrient solution and bubble are conveyed to tank, maintains the normal sustained service of biofilter.
The invention has the advantages that：
, can be smaller the invention provides a kind of plasma organic exhaust gas purifying system integrated with biofiltration and method
The pressure loss under will not increase huge cost while improve purification capacity, and using Plasma Cleaning System and
Biological filter system is sequentially connected in series form, the advantages of can keeping plasma and biofilter each, and realizes complementary association
Tune acts on, and can handle the not treatable organic exhaust gas of single creature filtration system.And biofiltration process can be removed effectively
The accessory substance such as small molecule aldehyde, ketone, fat caused by ion body technique, almost can be degradable into harmless small molecule, no
Pollution can be produced again.
The present invention is integral type structure, and plasma reactor and biofilter are combined in a reactor, can
It is reduced significantly system bulk and reduces the residence time；And plasma reactor and biofilter use upper and lower combination side
Formula, i.e. waste gas spray arrive plasma reactor, directly arrive biofilter again after treatment；This mode waste gas is directly joined
With the generating process of plasma, using the starting stage of plasma discharge can produce high energy electron impact, highfield and
Pollutant that the effects such as electrolysis are directly destroyed in degraded waste gas, be allowed to degrade more thoroughly, even if the degraded of plasma
Effect performs to maximization；So as to improve the effect of exhaust-gas treatment, especially for the organic pollution of difficult degradation, effect shows
Write；And system bulk can be reduced significantly, and reduce floor space, it is simple in construction, be easily installed, cost of investment can be reduced.
In running of the present invention, waste gas directly participates in the generating process of plasma：The initial rank of plasma discharge
Section can produce the effects such as high energy electron impact, highfield and electrolysis, and the direct participation electric discharge of waste gas can be destroyed, degrade more
Add thoroughly.Therefore, it is possible to handle the organic pollution of difficult degradation, and obvious processing effect.
The biological treatment system of the present invention is provided with nutrient solution supply and bubble supply：It can ensure that microorganism lives at any time
Property, the problems such as microbial activity reduces when waste gas treatment equipment interval is runed is can solve the problem that, avoids the fluctuation for the treatment of effect, is resisted negative
Lotus impact capacity is strong.
Brief description of the drawings
Fig. 1 is the structural representation of organic exhaust gas purifying system of the present invention；In figure, injector 1, plasma reactor 2,
Biofilter 3, tank 4, blower fan 5, water pump 6, nutrient solution supply 7, bubble supply 8, high-tension transformer 9.
Fig. 2 is the operation principle schematic flow sheet of organic exhaust gas purifying system of the present invention.
Embodiment
Further illustrate the present invention below in conjunction with the drawings and specific embodiments, but embodiment the present invention is not done it is any
The restriction of form.Unless stated otherwise, the reagent of the invention used, method and apparatus is the art conventional reagent, methods
And equipment.
Embodiment 1
1st, a kind of plasma organic exhaust gas purifying system integrated with biofiltration, including reacting tank body, in reacting tank body
Portion is from top to bottom disposed with injector（1）, plasma reactor（2）And biofilter（3）, bottommost is tank
（4）；Blower fan is additionally provided with outside reacting tank body（5）, water pump（6）, nutrient solution supply（7）With bubble supply（8）；Blower fan
（5）With injector（1）Connection, water pump（6）Pass through pipeline and injector respectively（1）And tank（4）Connection, nutrient solution supply
（7）With bubble supply（8）And tank（4）Connection；Other tank（4）Gas vent is provided with the upper end of side wall, etc.
Plasma reactor（2）With high-tension transformer（9）Connection.
Wherein, the injector（1）On have several shower nozzles, correspond to several plasma reactors（2）.
The nutrient solution supply（7）There are several, particular number can be entered according to the size requirement and actual conditions of system
Row selection.
In addition, the plasma reactor（2）Positioned at injector（1）The underface of tail end, it is a kind of low-temperature plasma
Reactor according.Such as typical rf (discharge) plasma, corona pulse, dielectrically impeded discharge slide arc plasma.
The biofilter（3）Positioned at plasma reactor（2）Underface.
The nutrient solution supply（7）With bubble supply（8）Connecting line on be provided with valve.
The water pump（6）With injector（1）Connecting line access blower fan（5）With injector（1）Connecting line on.
2nd, in above-mentioned organic exhaust gas purifying system, the effect of each part is as follows：
Blower fan：For conveying organic exhaust gas to injector.
Injector：For inputting organic exhaust gas and recirculated water to system.
Plasma reactor：The first step for organic exhaust gas is handled, i.e., plasma technique is handled.
Biofilter：For the second step processing of organic exhaust gas after plasma technique processing, i.e., further biological mistake
The processing of filter method.
Tank：It is placed under biofilter, for storing the water from biofilter outflow.
Water pump：For the water circulation stored in the sink to be delivered into injector.
Nutrient solution supply and bubble supply：For supplying microbial nutrient solution and bubble, microorganism can be ensured at any time
Activity, the problems such as microbial activity reduces when waste gas treatment equipment interval is runed is can solve the problem that, avoids the fluctuation for the treatment of effect, is resisted
Load impact ability is stronger.
Embodiment 2
1st, a kind of plasma organic waste-gas purification method integrated with biofiltration, i.e., using net described in claim 1
Change system carries out the processing of organic exhaust gas（As shown in Figure 2）, specific method is as follows：
Organic exhaust gas purifying system is opened, organic exhaust gas is constantly inputted injector by blower fan, and organic exhaust gas is sprayed to pass through successively
The processing of plasma reactor and biofilter is crossed, the gas after processing is discharged from gas vent.The water pump of operation simultaneously
The liquid circulation in tank to injector, nutrient solution supply and bubble supply are constantly constantly conveyed into micro- life to tank
Thing nutrient solution and bubble, maintain the normal sustained service of biofilter.
2nd, in the purification method, the advantages of plasma and biofilter can not only be kept each, and realize mutual
Coordinative role is mended, the not treatable organic exhaust gas of single creature filtration system can be handled, can also effectively remove plasma skill
The accessory substance such as small molecule aldehyde, ketone, fat caused by art, will not produce secondary pollution.
In addition, for the mechanism of Low Temperature Plasma Treating technology, mainly there are three basic processes：
1）Primary process：In the starting stage of electric discharge, high energy electron impact, highfield and electrolysis, discharging product will be produced
There are ultraviolet, free radical, hydrogen peroxide, ozone etc..
2）Secondary process：Including ultraviolet, free radical, hydrogen peroxide, ozone and their synergy.Secondary process
Mainly produced by the product of primary process, therefore its degree of strength can be by primary process control, such as the adjustable purple of conversion carrier
Power of the presence or absence of outside line and ozone etc..
3）Regenerative process：The process and reaction product influenceed again by electric discharge including chemical reaction product leaves region of discharge
The course of reaction occurred later, mainly determined by the chemical property of organic matter in waste gas.
Wherein, primary process and secondary process the two processes are that organic pollutant degradation effect is mostly important the most key
, and the purified treatment scheme of the present invention can realize the recycling of primary process and secondary process, realize preferably processing
Effect.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than the present invention is protected
Protect the limitation of scope.Any modification for those skilled in the art, being made within the spirit and principles of the invention,
Equivalent substitution and improvement etc., should be included within the protection domain of the claims in the present invention.
Claims (7)
- A kind of 1. plasma organic exhaust gas purifying system integrated with biofiltration, it is characterised in that including spraying system, Plasma reaction system and biological filter system；Wherein, the spray equipment of spraying system, plasma reaction system etc. from Daughter reactor, the biofilter of biological filter system are from top to bottom set in turn in a retort.
- 2. organic exhaust gas purifying system according to claim 1, it is characterised in that the spraying system includes injector （1）, blower fan（5）And water pump（6）, plasma reaction system includes plasma reactor（2）And high-tension transformer（9）, it is raw Thing filtration system includes biofilter（3）, tank（4）With nutrient solution supply（7）With bubble supply（8）.
- 3. organic exhaust gas purifying system according to claim 2, it is characterised in that injector（1）, plasma reactor （2）, biofilter（3）And tank（4）From top to bottom it is set in turn in a retort；Blower fan（5）, water pump（6）, nutrition Liquid supply（7）With bubble supply（8）Outside retort, blower fan（5）With injector（1）Connection, water pump（6）Lead to respectively Cross pipeline and injector（1）And tank（4）Connection, nutrient solution supply（7）With bubble supply（8）And tank（4）Connection, High-tension transformer（9）With plasma reactor（2）Connection；Other tank（4）Gas vent is provided with the upper end of side wall.
- 4. organic exhaust gas purifying system according to claim 2, it is characterised in that the nutrient solution supply（7）It is gentle Steep supply（8）Connecting line on be provided with valve.
- 5. organic exhaust gas purifying system according to claim 1, it is characterised in that the water pump（6）With injector（1）'s Connecting line accesses blower fan（5）With injector（1）Connecting line on.
- 6. a kind of plasma organic waste-gas purification method integrated with biofiltration, it is characterised in that organic exhaust gas is defeated Enter spraying system, the plasma reactor sprayed to underface is handled, and then waste gas is directly entered plasma reaction Biological filter system immediately below device is handled, at the same by the liquid circulation in the tank immediately below biofilter to injection System, and bubble is blasted into tank, and regular replenishment microbial nutrient solution.
- 7. organic waste-gas purification method according to claim 6, it is characterised in that any described using Claims 1 to 55 Organic exhaust gas purifying system is handled, and opens cleaning system, and organic exhaust gas is constantly inputted injector, organic exhaust gas by blower fan The processing by plasma reactor and biofilter successively is sprayed, the gas after processing is discharged from gas vent；Together Liquid circulation in tank to injector, bubble supply are constantly constantly blasted gas by Shi Yunhang water pump into tank Bubble, nutrient solution supply periodically convey microbial nutrient solution to tank.
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| CN201710904127.XA CN107469586A (en) | 2017-09-29 | 2017-09-29 | A kind of plasma organic exhaust gas purifying system integrated with biofilter and method |
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| CN201710904127.XA CN107469586A (en) | 2017-09-29 | 2017-09-29 | A kind of plasma organic exhaust gas purifying system integrated with biofilter and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020151545A1 (en) * | 2019-01-26 | 2020-07-30 | 苏州敬天爱人环境科技有限公司 | Plasma catalysis method and biological method-based organic waste gas treatment device |
| CN113354194A (en) * | 2021-06-04 | 2021-09-07 | 清华大学 | Device for cooperatively treating printing waste gas and waste water and method for treating printing waste gas and waste water |
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Application publication date: 20171215 |
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