CN106039984A - Sewage plant waste gas purifying system based on pretreatment and biological filter pool combined process - Google Patents
Sewage plant waste gas purifying system based on pretreatment and biological filter pool combined process Download PDFInfo
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- CN106039984A CN106039984A CN201610586971.8A CN201610586971A CN106039984A CN 106039984 A CN106039984 A CN 106039984A CN 201610586971 A CN201610586971 A CN 201610586971A CN 106039984 A CN106039984 A CN 106039984A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
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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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
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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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
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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
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/95—Specific microorganisms
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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
- B01D2257/30—Sulfur compounds
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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
- B01D2257/30—Sulfur compounds
- B01D2257/304—Hydrogen sulfide
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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
- B01D2257/30—Sulfur compounds
- B01D2257/306—Organic sulfur compounds, e.g. mercaptans
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Environmental & Geological Engineering (AREA)
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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
- Treating Waste Gases (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
The invention discloses a sewage plant waste gas purifying system based on pretreatment and biological filter pool combined process. The sewage plant waste gas purifying system comprises a waste gas collection and delivery system and the pretreatment and biological filter pool combined process, collected waste gas is delivered to the combined process of a pretreatment and biological filter pool for purifying, a washing liquid spraying pipe and an air distribution system are arranged at the top and the bottom of the pretreatment and biological filter pool respectively, a biological filter material layer is arranged in the middle of the pretreatment and biological filter pool, a gas incoming pipe communicated with a pretreatment area is arranged at the bottom of the left side of a biological filter pool, a gas outgoing pipe communicated with a biological treatment area is arranged at the top of the right side of the biological filter pool, and a ventilation pipeline communicating the top of the pretreatment area and the biological filter pool is arranged between the top of the pretreatment area and the bottom of the biological filter pool. The pretreatment area is added before the combined process, and alkali circulation is adopted, so that pH of waste gas is increased, and effect of the subsequent biological filter pool is guaranteed; advantageous strains are cultured during biological treatment, pollutants in the waste gas are degraded in a targeted manner, and up-to-standard emission of the waste gas is realized.
Description
Technical field
The present invention relates to exhaust-gas treatment, give up particularly to a kind of Sewage Plant based on pretreatment and biofilter group technology
Gas cleaning system.
Background technology
Sewage treatment plant's main process is regulation section, anaerobism section and aerobic section and Treatment of Sludge section, these techniques
Section produces certain foul gas, and main foul gas is H2S, ammonia, mercaptan, CH4、CO2The air more than needed with aerobic aeration.
Above structures are sealed, is delivered on waste gas cleaning system after gas sampling, chemistry and biochemical reaction occur, reaches
To purifying malodorous gas purpose, and make tail gas qualified discharge.
Summary of the invention
The present invention seeks to: a kind of Sewage Plant of based on pretreatment and biofilter group technology waste gas purification system is provided
System, its simple in construction, purification efficiency is high, and tail gas qualified discharge, power consumption, operating cost is low, and operation management is simple.
The technical scheme is that
Sewage Plant waste gas cleaning system based on pretreatment and biofilter group technology, including gas sampling and induction system,
Pretreatment and biofilter combined system, the waste gas of collection is transported to induction system pretreatment and biofilter combined system is entered
Row purifies, and described pretreatment and biofilter combined system include pretreating zone and the biofilter split side by side, pretreating zone
Being respectively equipped with cleaning mixture shower with the top of biofilter, bottom is respectively equipped with gas distribution system, and middle part is respectively equipped with biological filter
The bed of material, pretreating zone left bottom is provided with the air inlet pipe connected with pretreating zone, and biofilter right hand top is provided with and biological filter
Pond connection escape pipe, bottom top, pretreating zone and biofilter between be provided with and make pretreating zone and biofilter communicate
Breather line.
Preferably, between the biological filter bed of material and the gas distribution system of described pretreating zone and biofilter by filler supporting plate every
Opening, described filler supporting plate uses glass fiber reinforced grid-like panel, and flase floor thickness is 25mm, and plate body is evenly distributed with some 20*20mm
Through hole.
Preferably, pretreatment cyclic water tank and biofilter also it are separately installed with outside described Sewage Plant waste gas cleaning system
Cyclic water tank；The clear liquid that water inlet is Aerobic Pond of described pretreatment cyclic water tank, circulation fluid is liquid caustic soda, and outlet pipe passes through recirculated water
It is pumped into the cleaning mixture shower at top, after the biological filter bed of material through pretreating zone filters, outlet bottom pretreating zone
Being connected with cyclic water tank, pretreatment cyclic water tank is provided with drainage screen, emptying and overflow pipe；The water inlet of described biofilter is preferably
Oxygen pond mud mixture and Zhong Shui, outlet pipe is transported to the cleaning mixture shower at top by water circulating pump, through biofilter
The biological filter bed of material purify after, bottom biofilter, outlet is connected with cyclic water tank, biofilter cyclic water tank set drainage screen,
Emptying and overflow pipe.
Preferably, described pretreatment cyclic water tank connects Aerobic Pond clear liquid and liquid caustic soda pipeline, is sprayed by cleaning mixture shower
Drenching liquid, the pH of regulation waste gas, biofilter cyclic water tank connects Aerobic Pond mud mixture and intermediate water pipeline, supplements biological filter
The biological bacteria in pond and the water of cyclic water tank.
Preferably, what described biofilter connected escape pipe is by centrifugal blower connection aiutage, at the bottom of described aiutage
Portion also connects exhausting pipeline, the hydrops in discharge aiutage.
Preferably, the filtrate of the biological filter bed of material of described pretreating zone is the spherical volcanic rock of 20-30mm, by Aerobic Pond
Clear liquid and alkali liquor are sprayed on volcanic rock, are adjusted the pH of waste gas by the space of volcanic rock, and are absorbed by the clear liquid of Aerobic Pond
Hydrogen sulfide and ammonia in waste gas, the Organic substance being adsorbed by volcanic rock, degrading in waste gas, reach to regulate wastewater pH and initial breakdown
The Effect of Pretreatment of waste gas, pretreatment flase floor is placed 304 screen clothes of 10 mesh, lays filtrate above screen cloth, and filtrate height exists
1.2-1.5m。
Preferably, the filtrate of the biological filter bed of material of described biofilter is sponge ball, coke, is mixed by the muddy water of Aerobic Pond
Thing is sprayed on sponge ball and coke, and the surface of sponge ball and coke and internal aufwuch bacterium, pollutant enter from filtrate
Being attached in the biomembrane of filter material surface, hydro carbons is decomposed into CO with other organic components are oxidized2And H2O, becomes containing sulfur reduction
Divide and be oxidized to S, SO4 2-, nitrogen containing component is oxidized resolves into NH4 -、NO2 -And NO3 -；By in biological bacteria biodegradation waste gas
Pollutant, by the water level of middle water replenishment cycles water tank.
The invention have the advantage that
Sewage plant bad smell biological cleaning system provided by the present invention, increases pretreatment at equipment leading portion, ensures at subsequent biochemical
The effect of reason.Cultivating dominant bacteria in biological treatment, the pollutant in degraded waste gas, compare tradition deodorization work targetedly
Skill, treatment effect and operation stability are more preferable, are embodied in: the pressure loss is little, and equipment operation energy consumption is low, and operating cost is less than
Additive method, such as absorbent charcoal method, burning method；Real green method does not use harmful chemical drugs, and the energy needs
Asking cheap, do not produce secondary pollution, last product is optimum；Automatic Control, all weather operations, only need to make an inspection tour, fortune
Line stabilization is reliable, adapts to the operation conditions of different condition；Treatment effeciency is high, removal effect is obvious, easy maintenance, satisfied different works
Make environment.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings and embodiment the invention will be further described:
Fig. 1 is the structural representation of sewage plant bad smell biological cleaning system of the present invention.
Detailed description of the invention
As it is shown in figure 1, disclosed Sewage Plant waste gas purification based on pretreatment and biofilter group technology
System, including gas sampling and induction system, pretreatment and biofilter group technology, the waste gas conveying that induction system will be collected
Group technology to pretreatment and biofilter purifies, and the top of pretreatment and biofilter is respectively equipped with cleaning mixture spray
Pipe, bottom is respectively equipped with gas distribution system, and middle part is respectively equipped with the biological filter bed of material, and biofilter left bottom is provided with and pretreating zone
Connection air inlet pipe, biofilter right hand top be provided with connect with biological treatment zone escape pipe, pretreatment top and biology
The breather line making pretreatment top and biofilter communicate it is provided with between bottom filter tank.
The casing material of described exhaust gas biological purifying system is 304 square steel frameworks, PP plate or frp lining, outer 30-
The insulation of 50mm heat-preservation cotton and 304 flat board external decoration, waste gas pipeline road is PP material or glass steel material, prevents the acidity of waste gas
Gas attack pipeline.Liner is PP plate or fiberglass prevents waste gas from corroding material, prevents biological bacteria from degrading inner lining material simultaneously.
Described pretreatment, being separated by filler supporting plate between the biological filter bed of material and gas distribution system, described filler supporting plate is adopted
With glass fiber reinforced grid-like panel, flase floor thickness is 25mm, and hole is 20*20mm.
Described it is separately installed with pretreatment cyclic water tank and biofilter cyclic water tank.Entering of described pretreatment cyclic water tank
Water is the clear liquid of Aerobic Pond, and alkali circulation is liquid caustic soda (liquid sodium hydroxide), and outlet pipe is transported to washing of top by water circulating pump
Washing liquid shower, after the media filtration of pretreatment, bottom pretreatment, outlet is connected with cyclic water tank, pretreatment recirculated water
Case is provided with drainage screen, emptying and overflow pipe.
The clear liquid that water inlet is Aerobic Pond of described pretreatment cyclic water tank, the pH of clear liquid is 7.5 ~ 8.5, by Aerobic Pond
Clear liquid reduces the liquid feeding alkali number neutralizing waste gas pH, and the pH controlling cyclic water tank is 7.0 ~ 8.0, when the pH of cyclic water tank is less than 7.0
Time add liquid caustic soda, improve pH to 8.0, when the pH of cyclic water tank reaches 8.0, stop adding liquid caustic soda, entered by continuous waste gas pre-
In process, the pH of cyclic water tank is gradually reduced, to pH reach 7.5 time, add Aerobic Pond clear liquid, continue into pre-place along with waste gas
In reason, the pH of cyclic water tank is dropping to 7.0, now stops adding the clear liquid of Aerobic Pond, starts to add liquid caustic soda.By above-mentioned chemistry
Reaction, hydrogen sulfide, ammonia and mercaptan etc. in waste gas are fully dissolved in the water of cyclic water tank, reach the pretreatment of alkali cleaning waste gas
Purpose, it is achieved that hydrogen sulfide and the removal of ammonia more than 90%, the removal of mercaptan more than 95%.Odor concentration in waste gas is from 5000
~ 8000 are reduced to 2500 ~ 4000, it is achieved the clearance of foul smell more than 50%.When the electrical conductivity of cyclic water tank reach 5000 ~
During 8000us/cm, the water of cyclic water tank is drained into by exhausting pipeline the regulating reservoir of sewage treatment plant, further processes.
Described pretreatment filtrate is the spherical volcanic rock of 20-30mm, and filtrate height is at about 1.2-1.5m, pretreatment lattice
Placing 304 screen clothes of 10 mesh on screen, lay filtrate above screen cloth, filtrate service life is 12 ~ 15 years.
Described pretreatment realizes removing the dust in foul smell, prevents dust from entering subsequent bio trickling filter and causes pressure drop to increase
Greatly, with the failure avoiding the increase of operating cost even to run.By washing, the foul smell making entrance subsequent biological treatment device is wet
Degree reaches degree of saturation, meets the biological treatment strict demand to humidity.By washing with water, it is also possible to remove part solubility and give up
Gas composition, alleviate and cause smelly composition and suddenly change the impact load that causes to a certain extent, it is ensured that the phase of subsequent biological treatment foul smell load
To stable.
About the 6.8 ~ 7.2 of described biofilter cyclic water tank, odor concentration is reduced to less than 20 from 2500 ~ 4000, in fact
The qualified discharge of existing foul smell.When the electrical conductivity of cyclic water tank reaches 2000 ~ 3000us/cm, by the water of cyclic water tank by putting
Vacant duct drains into the regulating reservoir of sewage treatment plant, water in supplementing, and the mud mixture of Aerobic Pond supplements once for every 3 days, controls to follow
The Biomass of ring water tank for precipitation 30min after be about 5%.In control cyclic water tank, the temperature of water is at 20 ~ 30 DEG C, it is ensured that biological
The production of bacterium and breeding.
The sulfur systems such as hydrogen sulfide, methanthiol, methyl sulfide, ethyl sulfide, methyl disulfide, Carbon bisulfide are disliked by described biofilter
Sordes matter processes, and enters the odor pollutant of microbial cell and is decomposed profit as the energy of microbial life activity or nutrient
With, so that pollutant are removed.The class gaseous contaminant Han organic sulfur in waste gas, in biological treatment section by being attached to biology
The composite bacterias such as grate sulfur thiobacillus on filler, thiobacillus thiooxidans carry out biodegradation, and proper extension gas and filler
Effectively time of contact, organic sulfur class gaseous contamination is degraded to SO4 2-, S2-, SO3 2-Deng.
The concrete transforming principle in described biofilter is as follows: enter the Organic substance in microbial cell body, at various cells
Under the catalytic action of endoenzyme (dehydrogenase, oxidase etc.), microorganism carries out oxidation Decomposition to it, carries out anabolism generation simultaneously
New microbial cell.A part of Organic substance is eventually converted into H by oxidation Decomposition2O and CO2Etc. stable inorganic substances, and from
The middle energy obtained required for the new cellular material of synthesis (protoplasm).This process can be as follows by formula:
。
Meanwhile, during microorganism utilizes another part Organic substance and catabolic process, produced energy synthesizes
Metabolism is to form new cellular material.This process can be represented by the formula:
。
In above-mentioned conversion process, when the content abundance of organic substrates, microorganism is in Fast growth phase, will have a large amount of
New cell synthesis, but along with the continuous oxidation Decomposition of substrate and microorganism and the continuous of cellular material quantity increase, microorganism is raw
Producing the demand to organic substrates to be gradually not being met, microorganism will go into the endogenous respiration stage.Now microorganism is to certainly
Body cellular material carries out oxidation Decomposition, and produces energy, becomes the major way maintaining its growth and breeding to provide energy, sees below formula
。
The process of described biofilter biological treatment mainly divides three steps: the first step, is adsorbed on filtrate by pollutant.This
One process is to be determined by the good adsorbent performance of filtrate.The hydrophobicity of its coating enhances absorption slightly solubility organic pollution
Ability.This adsorption process ensure that and degrades pollutant to greatest extent, also makes biofilter transport in system simultaneously
That goes has goodish treatment effect at the very start.In addition adsorption can ensure that the impact load energy that filter tank opposing is higher
Power, also is able to reach good treatment effect for flow and the pollutant levels big foul smell of fluctuation.Second step, pollutant are from filter
Enter on material in the biomembrane being attached to filter material surface.3rd step, reduced sulphur compound is oxidized to water under the effect of microorganism,
CO2And H2SO4。
What described biofilter connected escape pipe connects aiutage by centrifugal blower, also connects bottom described aiutage
Exhausting pipeline, the hydrops in discharge aiutage, it is achieved the qualified discharge of waste gas.Above-described embodiment is only for the technology of the explanation present invention
Design and feature, its object is to allow person skilled in the art will appreciate that present disclosure and to implement according to this, can not
Limit the scope of the invention with this.All modifications done according to the spirit of main technical schemes of the present invention, all should contain
Cover within protection scope of the present invention.
Claims (7)
1. Sewage Plant waste gas cleaning system based on pretreatment and biofilter group technology, including gas sampling and delivery system
System, pretreatment and biofilter combined system, the waste gas of collection is transported to pretreatment and biofilter combination system by induction system
System purifies, and described pretreatment and biofilter combined system include pretreating zone and the biofilter split side by side, locate in advance
The top of reason district and biofilter is respectively equipped with cleaning mixture shower, and bottom is respectively equipped with gas distribution system, and middle part is respectively equipped with life
Thing filter material layer, pretreating zone left bottom is provided with the air inlet pipe connected with pretreating zone, and biofilter right hand top is provided with raw
The connection of thing filter tank escape pipe, bottom top, pretreating zone and biofilter between be provided with and make pretreating zone and biofilter phase
Logical breather line.
Sewage Plant waste gas cleaning system the most according to claim 1, it is characterised in that: described pretreating zone and biofilter
The biological filter bed of material and gas distribution system between separated by filler supporting plate, described filler supporting plate use glass fiber reinforced grid-like panel, lattice
Screen thickness is 25mm, and plate body is evenly distributed with the through hole of some 20*20mm.
Sewage Plant waste gas cleaning system the most according to claim 2, it is characterised in that: described Sewage Plant waste gas cleaning system
Outside is also separately installed with pretreatment cyclic water tank and biofilter cyclic water tank；The water inlet of described pretreatment cyclic water tank is preferably
The clear liquid in oxygen pond and liquid caustic soda, outlet pipe is transported to the cleaning mixture shower at top by water circulating pump, through pretreating zone
After the biological filter bed of material filters, bottom pretreating zone, outlet is connected with cyclic water tank, and pretreatment cyclic water tank is provided with drainage screen, puts
Sky and overflow pipe；The water inlet of described biofilter is Aerobic Pond mud mixture and Zhong Shui, and outlet pipe is defeated by water circulating pump
Deliver to the cleaning mixture shower at top, after the biological filter bed of material through biofilter purifies, bottom biofilter outlet with follow
Ring water tank is connected, and biofilter cyclic water tank sets drainage screen, emptying and overflow pipe.
Sewage Plant waste gas cleaning system the most according to claim 3, it is characterised in that: described pretreatment cyclic water tank connects
Aerobic Pond clear liquid and liquid caustic soda pipeline, by cleaning mixture shower ejecting liquid, the pH of regulation waste gas, biofilter cyclic water tank is even
Connect Aerobic Pond mud mixture and intermediate water pipeline, supplement biological bacteria and the water of cyclic water tank of biofilter.
Sewage Plant waste gas cleaning system the most according to claim 4, it is characterised in that: described biofilter connection go out
Trachea connects aiutage by centrifugal blower, also connects exhausting pipeline, the hydrops in discharge aiutage bottom described aiutage.
Sewage Plant waste gas cleaning system the most according to claim 4, it is characterised in that: the biofilter material of described pretreating zone
The spherical volcanic rock that filtrate is 20-30mm of layer, is sprayed at Aerobic Pond clear liquid and alkali liquor on volcanic rock, by volcanic rock
Space adjusts the pH of waste gas, and absorbs hydrogen sulfide and ammonia in waste gas by the clear liquid of Aerobic Pond, is adsorbed by volcanic rock, degrades
Organic substance in waste gas, reaches to regulate wastewater pH and the Effect of Pretreatment of initial breakdown waste gas, and pretreatment flase floor is placed 10
Purpose 304 screen cloth, lays filtrate above screen cloth, filtrate height is at 1.2-1.5m.
Sewage Plant waste gas cleaning system the most according to claim 4, it is characterised in that: the biofilter material of described biofilter
The filtrate of layer is sponge ball, coke, is sprayed on sponge ball and coke by the mud mixture of Aerobic Pond, sponge ball and coke
Surface and internal aufwuch bacterium, pollutant enter in the biomembrane being attached to filter material surface from filtrate, and hydro carbons has with other
Machine thing composition is oxidized is decomposed into CO2And H2O, the composition containing sulfur reduction is oxidized to S, SO4 2-, nitrogen containing component is oxidized to be resolved into
NH4 -、NO2 -And NO3 -；By the pollutant in biological bacteria biodegradation waste gas, by the water level of middle water replenishment cycles water tank.
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| CN106492624A (en) * | 2016-11-02 | 2017-03-15 | 中胶橡胶资源再生（青岛）有限公司 | A kind of device and method of bioanalysises exhaust-gas treatment |
| CN106731780A (en) * | 2017-03-21 | 2017-05-31 | 上海兰宝环保科技有限公司 | Bacteria bed waste gas purification apparatus |
| CN107185396A (en) * | 2017-07-10 | 2017-09-22 | 西原环保工程(上海)有限公司 | Odor removal |
| CN107970715A (en) * | 2017-12-31 | 2018-05-01 | 江苏永益环保科技有限公司 | Ink prints waste gas treatment equipment |
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| CN111530270A (en) * | 2019-12-30 | 2020-08-14 | 安徽分创环保科技有限公司 | Efficient biological treatment device and treatment method for waste gas |
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