CN112999861A - High-efficient circulation regeneration microbial degradation VOCs device - Google Patents
High-efficient circulation regeneration microbial degradation VOCs device Download PDFInfo
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- CN112999861A CN112999861A CN202110267824.5A CN202110267824A CN112999861A CN 112999861 A CN112999861 A CN 112999861A CN 202110267824 A CN202110267824 A CN 202110267824A CN 112999861 A CN112999861 A CN 112999861A
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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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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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
- B01D53/40—Acidic components
-
- 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
- B01D53/54—Nitrogen 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
- B01D53/74—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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- 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)
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Abstract
The invention relates to the technical field of waste gas treatment, and discloses a device for degrading VOCs (volatile organic compounds) by efficiently circulating and regenerating microorganisms, which comprises an alkaline spray tower, an acidic spray tower, a clear water washing tower, a resetting biological tank and a biochemical tank, wherein composite filler, a wire mesh dehydrator and granular activated carbon are arranged in the resetting biological tank, the top of the resetting biological tank is fixedly connected with a discharge mechanism, the left side of the discharge mechanism is fixedly connected with a centrifugal fan, the left side of the biological tank is provided with a humidifying pump, the left side of the biochemical tank is provided with an air blower, and the right side of the biochemical tank is provided with an activated sludge pump. In the invention, the right sides of the alkaline spray tower, the acidic spray tower and the clear water washing tower are fixedly connected with the storage tanks, the three storage tanks are fixedly connected with the top of the biochemical tank through water pipes, circulating liquid in the storage tanks can be periodically discharged into the biochemical tank for biochemical degradation, the self-purification effect of waste liquid in the whole system can be realized, and the generation of dangerous waste liquid of the system can not be increased.
Description
Technical Field
The invention belongs to the technical field of waste gas treatment, and particularly relates to a device for degrading VOCs (volatile organic compounds) by using high-efficiency circulating regeneration microorganisms.
Background
In industries such as garbage transfer stations, breeding plants, organic matter plants, food plants, feed plants, pharmaceutical factories and the like, because the industries generate a large amount of malodorous gases in the production process, the emission of malodorous gases is always a prominent problem. Because the enterprises in the current situation do not adopt the standard pipeline collection and reasonable process for treatment, the odor discharged in an unorganized way not only can cause serious atmospheric pollution (including severe weather problems such as acid rain and the like in local areas caused by photocatalytic reaction of atmospheric layers caused by sulfur-containing substances), but also can seriously damage the physical and psychological health of surrounding residents;
the existing stink treatment process in the market mainly comprises an activated carbon adsorption method, a UV photolysis purification method, a regenerative thermal oxidation method (RTO), a regenerative catalytic combustion method (RCO) and the like. The purification efficiency of the activated carbon at the initial stage of adsorption can reach 90%, but the activated carbon needs to be frequently replaced, the cost of replacing materials is high, the used activated carbon hazardous waste can cause secondary environmental pollution, and the cost of secondary treatment of the hazardous waste needs to be increased; the purification efficiency of the UV photolysis purification method only reaches about 50-70% under the normal operation condition, the service life of UV and the like is limited, the failure rate is high, and the cost of periodic maintenance and replacement is high; the heat accumulating type thermal oxidation (RTO) system has high investment cost and large wind resistance, so that the operation energy consumption is large, the RTO needs about 2 hours to reach the required temperature, when the concentration of waste gas is low, a large amount of natural gas is consumed for preheating, and carcinogenic substances such as dioxin and the like generated by processing halogen-containing elements are treated; the regenerative catalytic combustion (RCO) equipment has high operation energy consumption and high cost for replacing the catalyst, and the treatment of halogen-containing elements can cause the poisoning failure of the catalyst.
Disclosure of Invention
The invention aims to: in order to solve the problems, a device for degrading VOCs (volatile organic compounds) by efficiently recycling and regenerating microorganisms is provided.
The technical scheme adopted by the invention is as follows: the utility model provides a high-efficient circulation regeneration microbial degradation VOCs device, includes alkaline spray column, acid spray column, clear water scrubbing tower, resets biological pond and biochemical pond, alkaline spray column left side fixedly connected with waste gas import, alkaline spray column, acid spray column and clear water scrubbing tower are inside all to be provided with cloth fan housing and adsorption filler, alkaline spray column, acid spray column and clear water scrubbing tower right side fixedly connected with storage tank, storage tank top fixedly connected with spray pump, the biological pond that resets is inside to be provided with composite filler, dehydrator and granule active carbon, biological pond top fixedly connected with emission mechanism resets, emission mechanism left side fixedly connected with centrifugal fan, biological pond left side is provided with the humidification pump, biochemical pond left side is provided with the air-blower, biochemical pond right side is provided with the active sludge pump.
In a preferred embodiment, the top of the alkaline spray tower is fixedly connected with the outer wall of the left side of the acidic spray tower through a pipeline, the top of the acidic spray tower is fixedly connected with the outer wall of the left side of the clean water washing tower through a pipeline, the top of the clean water washing tower is fixedly connected with the top of the resetting biological tank through a pipeline, and the three-stage washing and microbial degradation improve the treatment efficiency.
In a preferred embodiment, all three storage tanks are fixedly connected with the top of the biochemical tank through water pipes, and circulating liquid in the storage tanks can be periodically discharged into the biochemical tank for biochemical degradation, so that the self-purification effect of the waste liquid in the whole system can be achieved, and the generation of dangerous waste liquid of the system can not be increased.
In a preferred embodiment, the composite filler is formed by mixing ceramsite, volcanic rock, pine bark and wood charcoal, and utilizes the adsorption, absorption and degradation functions of microbial cells on malodorous substances, wherein the microbial cells have the characteristics of small size, large surface area, strong adsorbability and various metabolic types, and the malodorous substances are adsorbed and then decomposed into simple inorganic substances such as CO, HO, HSO, HNO and the like. Effectively remove the malodorous components such as NH, HS and the like.
In a preferred embodiment, atomizers are arranged inside the alkaline spray tower, the acidic spray tower and the clean water washing tower, and the atomizers are connected with the storage tank through water pipes.
In a preferred embodiment, the alkaline spray tower is located on the left side of the acidic spray tower, and the acidic spray tower is located on the left side of the clear water washing tower.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. in the invention, the right sides of the alkaline spray tower, the acidic spray tower and the clear water washing tower are fixedly connected with the storage tanks, the three storage tanks are fixedly connected with the top of the biochemical tank through water pipes, circulating liquid in the storage tanks can be periodically discharged into the biochemical tank for biochemical degradation, the self-purification effect of waste liquid in the whole system can be realized, and the generation of dangerous waste liquid of the system can not be increased.
2. In the invention, high-concentration malodorous gas firstly enters an alkaline spray tower from a waste gas inlet to achieve the aim of removing acid-containing substances, is continuously pumped by a spray pump for circular washing, mixed liquid subjected to physical or chemical reaction enters a storage tank on the right side of the tower, the waste gas enters an acidic spray tower after being washed by the alkaline spray tower, the operation is repeated to treat the acidic gas in the waste gas, the malodorous gas enters a clear water washing tower after passing through the acidic spray tower, a small amount of chemical agents in the acidic spray tower are removed by the clear water washing tower, the influence of the acidic chemical agents on the normal metabolism of microorganisms in a biological filter is reduced, the waste gas enters a composite biological tank after passing through the clear water washing tower, the waste gas is humidified by a humidifying pump, and then the waste gas is decomposed into CO, CO and CO after being adsorbed by a humid and porous reset filler filled with active microorganisms, HO, HSO, HNO and other simple inorganic substances, effectively removes NH, HS and other malodorous components, and ensures that the air outlet of the equipment reaches the standard for emission.
Drawings
FIG. 1 is a schematic diagram of the structure of a device for degrading VOCs by using high-efficiency circulating regeneration microorganisms according to the invention.
The labels in the figure are: 1-alkaline spray tower, 2-acid spray tower, 3-clear water washing tower, 4-compound biological tank, 5-biochemical tank, 6-waste gas inlet, 7-air distribution cover, 8-adsorption filler, 9-storage tank, 10-spray pump, 11-compound filler, 12-wire mesh dehydrator, 13-granular active carbon, 14-discharge mechanism, 15-centrifugal fan, 16-humidifying pump, 17-active sludge pump and 18-blower.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a device for degrading VOCs (volatile organic compounds) by high-efficiency circulating regeneration microorganisms comprises an alkaline spray tower 1, an acidic spray tower 2, a clear water washing tower 3, a resetting biological tank 4 and a biochemical tank 5, wherein the alkaline spray tower 1 is positioned on the left side of the acidic spray tower 2, the acidic spray tower 2 is positioned on the left side of the clear water washing tower 3, the top of the alkaline spray tower 1 is fixedly connected with the outer wall of the left side of the acidic spray tower 2 through a pipeline, the top of the acidic spray tower 2 is fixedly connected with the outer wall of the left side of the clear water washing tower 3 through a pipeline, the top of the clear water washing tower 3 is fixedly connected with the top of the resetting biological tank 4 through a pipeline, the left side of the alkaline spray tower 1 is fixedly connected with a waste gas inlet 6, the interiors of the alkaline spray tower 1, the acidic spray tower 2 and the clear water washing tower 3 are respectively provided, the three storage tanks 9 are all fixedly connected with the top of the biochemical tank 5 through water pipes, circulating liquid of the storage tanks can be periodically discharged into the biochemical tank 5 for biochemical degradation, the waste liquid can achieve the self-purification effect in the whole system, the generation of dangerous waste liquid of the system can not be increased, atomizers are arranged in the alkaline spray tower 1, the acidic spray tower 2 and the clear water washing tower 3 and are connected with the storage tanks 9 through water pipes, a spray pump 10 is fixedly connected with the top of the storage tanks 9, a composite filler 11, a wire mesh dehydrator 12 and granular activated carbon 13 are arranged in the restoration biological tank 4, the composite filler 11 is formed by mixing ceramsite, volcanic rock, pine bark and wood carbon, the adsorption, absorption and degradation functions of malodorous substances by utilizing microbial cells are utilized, and the cells of the microbes have the characteristics of small size, large surface area, strong adsorption and various metabolic types, and the malodorous substances are decomposed into CO2, H2O, H2SO4, HNO3 and other simple inorganic substances. Effectively remove foul smell compositions such as NH3, H2S, reset biological pond 4 top fixedly connected with discharge mechanism 14, discharge mechanism 14 left side fixedly connected with centrifugal fan 15, biological pond 4 left side is provided with humidifying pump 16, biochemical pond 5 left side is provided with air-blower 18, biochemical pond 5 right side is provided with activated sludge pump 17.
The working principle is as follows: high-concentration malodorous gas firstly enters an alkaline spray tower 1 from a waste gas inlet 6, is uniformly distributed through a wind distribution cover 7 and then is combined with alkali liquor on the surface of an adsorption filler 8 to achieve the purpose of removing acid-containing substances, spray liquid is sprayed onto the adsorption filler 8 from the top of the alkaline spray tower 1 through a liquid atomizer, the contact time of steam and water is ensured to the greatest extent, the efficiency of dissolving organic pollutants in the alkali liquor is improved, the mixed liquid flows down along the surface of the filler and is continuously extracted through a spray pump 10 for circular washing, the mixed liquid after physical or chemical reaction enters a storage tank 9 on the right side of the tower, the waste gas enters an acidic spray tower 2 after being washed through the alkaline spray tower 1, the operation is repeated, the acidic gas in the waste gas is treated, the malodorous gas enters a clear water washing tower 3 after passing through the acidic spray tower 2, and a small amount of chemical agents in the acidic spray tower 2 are removed through the clear, reducing the influence of acid chemical agents on the normal metabolism of microorganisms in the biological filter, leading waste gas to enter a composite biological tank 4 after passing through a clear water washing tower 3, the waste gas is humidified by a humidifying pump 16, and then the waste gas passes through a resetting filler 11 which is humidified, porous and filled with active microorganisms to absorb malodorous substances and decompose the malodorous substances into simple inorganic substances such as CO2, H2O, H2SO4, HNO3 and the like, thereby effectively removing the malodorous components such as NH3, H2S and the like, ensuring the standard discharge of the air outlet of the equipment, adding a wire mesh dehydrator 12 and arranging granular active carbon 13 to the composite biological tank 4, the water consumption in the spraying process can be effectively reduced, the circulating liquid of the storage tank after three-stage washing and microbial degradation can be regularly discharged into the biochemical tank 5 for biochemical degradation, the waste liquid can achieve the self-purification effect in the whole system, and the generation of the dangerous waste liquid of the system can not be increased.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides a high-efficient circulation regeneration microbial degradation VOCs device, includes alkaline spray column (1), acid spray column (2), clear water scrubbing tower (3), biological pond (4) and biochemical pond (5) reset, its characterized in that: the device is characterized in that a waste gas inlet (6) is fixedly connected to the left side of the alkaline spray tower (1), a cloth fan cover (7) and an adsorption filler (8) are arranged inside the alkaline spray tower (1), the acidic spray tower (2) and the clear water washing tower (3), a storage tank (9) is fixedly connected to the right side of the alkaline spray tower (1), the acid spray tower (2) and the clear water washing tower (3), a spray pump (10) is fixedly connected to the top of the storage tank (9), a composite filler (11), a silk screen dehydrator (12) and granular activated carbon (13) are arranged inside the biological resetting tank (4), a discharging mechanism (14) is fixedly connected to the top of the biological resetting tank (4), a centrifugal fan (15) is fixedly connected to the left side of the discharging mechanism (14), a humidifying pump (16) is arranged on the left side of the biological air blower tank (4), and a biochemical tank (, an activated sludge pump (17) is arranged on the right side of the biochemical tank (5).
2. A device for the efficient recycling of microbial degradation of VOCs as recited in claim 1, wherein: the top of the alkaline spray tower (1) is fixedly connected with the outer wall of the left side of the acidic spray tower (2) through a pipeline, the top of the acidic spray tower (2) is fixedly connected with the outer wall of the left side of the clear water washing tower (3) through a pipeline, and the top of the clear water washing tower (3) is fixedly connected with the top of the reset biological pond (4) through a pipeline.
3. A device for the efficient recycling of microbial degradation of VOCs as recited in claim 1, wherein: the three storage tanks (9) are fixedly connected with the top of the biochemical tank (5) through water pipes.
4. A device for the efficient recycling of microbial degradation of VOCs as recited in claim 1, wherein: the composite filler (11) is formed by mixing ceramsite, volcanic rock, pine bark and wood charcoal.
5. A device for the efficient recycling of microbial degradation of VOCs as recited in claim 1, wherein: atomizers are arranged inside the alkaline spray tower (1), the acidic spray tower (2) and the clear water washing tower (3), and are connected with the storage tank (9) through water pipes.
6. A device for the efficient recycling of microbial degradation of VOCs as recited in claim 1, wherein: the alkaline spray tower (1) is positioned on the left side of the acidic spray tower (2), and the acidic spray tower (2) is positioned on the left side of the clear water washing tower (3).
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| CN102068878A (en) * | 2010-12-02 | 2011-05-25 | 广州中洲环保科技有限公司 | Method for treating odors produced by drying sewage sludge |
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Application publication date: 20210622 |