CN110917864A - Wet curtain root wood microbial deodorization process - Google Patents
Wet curtain root wood microbial deodorization process Download PDFInfo
- Publication number
- CN110917864A CN110917864A CN201811090872.6A CN201811090872A CN110917864A CN 110917864 A CN110917864 A CN 110917864A CN 201811090872 A CN201811090872 A CN 201811090872A CN 110917864 A CN110917864 A CN 110917864A
- Authority
- CN
- China
- Prior art keywords
- wet
- curtain
- deodorization
- wet curtain
- microbial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
- B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
-
- 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
- B01D53/14—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 absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- 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
- B01D53/58—Ammonia
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/50—Inorganic acids
- B01D2251/506—Sulfuric acid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/10—Inorganic absorbents
- B01D2252/103—Water
-
- 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
Abstract
The invention discloses a wet curtain root wood microbial deodorization process, which is characterized in that odorous gas is introduced into a deodorization chamber through a draught fan and is discharged after being sequentially subjected to washing, neutralization and microbial adsorption and decomposition operations, and the process comprises the following specific steps: (1) washing with water: a gas-washing wet curtain is arranged in the deodorization chamber, and water is continuously sprayed on the gas-washing wet curtain by a spray head above the gas-washing wet curtain; (2) neutralizing: a neutralization wet curtain is arranged between an air outlet of the deodorization chamber and the scrubbing wet curtain, and a spray head above the neutralization wet curtain continuously sprays diluted sulfuric acid solution onto the neutralization wet curtain; (3) and (3) microbial adsorption and decomposition: root wood is accumulated at the air outlet of the deodorization chamber. The invention realizes the concentration of odor by building a deodorization chamber, reduces the concentration of dust and odor in gas by using the operations of washing and neutralization, finally uses roots to slowly flow and adsorb the odor, and simultaneously realizes the rapid solidification and decomposition of the odor by matching with the microorganism strains for deodorization in the roots, thereby treating the odor to the maximum extent and with the most efficiency.
Description
Technical Field
The invention relates to the field of environmental protection, in particular to a wet curtain root wood microbial deodorization process.
Background
In the fields of the breeding industry, methane pools and the like, the rotting and fermentation of organic matters can generate very heavy odor, so that the deodorization process has great significance for protecting the environment. Wherein the biological deodorization effect is optimal.
The basic principle of biological treatment of odor is a process of absorbing malodorous substances dissolved in water into microorganisms by utilizing the microorganisms, and degrading the malodorous substances by the metabolic activity of the microorganisms. The acted substance is finally decomposed into inorganic acid by the microorganism, an acidic environment which is not beneficial to the life of the putrefying microorganism is formed, and substances which generate malodorous gas during decomposition are fundamentally degraded.
Microbial deodorization can be divided into three processes:
1. the malodorous gas is dissolved, namely, the malodorous gas is transferred from a gas phase to a liquid phase;
2. the odor component in the water solution is absorbed by microorganism, namely the odor dissolved in water is absorbed by the microorganism through the cell wall and the cell membrane of the microorganism, while the odor not dissolved in water is firstly attached outside the microorganism, and is decomposed into soluble substances by extracellular enzyme secreted by the microorganism and then permeates into cells;
3. the malodorous components entering the microbial cells are used as nutrient substances to be decomposed and utilized by the microbes, so that pollutants are removed.
Most of the existing biological deodorization methods are made into spray to spray at a specified place, but the action time is short, the effect is not good, and the lasting effect is short.
Disclosure of Invention
The invention aims to provide a wet curtain root wood microbial deodorization process which can deodorize for a long time and is stable in deodorization so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a wet curtain root wood microbial deodorization process introduces odor-containing gas into a deodorization chamber through a draught fan, and discharges the odor-containing gas after sequentially passing through washing, neutralization and microbial adsorption and decomposition operations, and the specific process is as follows:
(1) washing with water: installing a wet scrubbing curtain in the deodorization chamber, continuously spraying water to the wet scrubbing curtain by a spray head above the wet scrubbing curtain, and removing dust and a small part of ammonia gas in the gas by using the water which flows down continuously in the wet curtain;
(2) neutralizing: a neutralization wet curtain is arranged between an air outlet of the deodorization chamber and the scrubbing wet curtain, a spray head above the neutralization wet curtain continuously sprays diluted sulfuric acid solution to the neutralization wet curtain, and the sulfuric acid solution is used for absorbing ammonia gas;
(3) and (3) microbial adsorption and decomposition: the root wood with the thickness not less than 60cm is accumulated at the air outlet of the deodorization chamber, the water is regularly sprayed to the root wood to keep the humidity, and the root wood is inoculated with a microbial community for decomposing ammonia gas and used for adsorbing and decomposing residual ammonia gas.
As a further scheme of the invention: the microbial community mainly comprises sulfate reducing bacteria, hydrolytic bacteria and acidifying bacteria.
As a further scheme of the invention: the draught fan sets up in the air intake department of deodorization room, and the air intake of deodorization room passes through the position of pipe connection pig house, natural pond liquid pond discharge foul smell to can guarantee that the very first time introduces the peculiar smell in the deodorization room.
As a further scheme of the invention: wet curtain of washing gas and neutralization wet curtain all through connecting piece fixed connection on the inner wall of deodorization room, and the wet curtain of washing gas and neutralization wet curtain correspond respectively under and be provided with pond A and pond B for receive the liquid that falls down on the wet curtain, the shower nozzle subassembly that a plurality of shower nozzles establish ties and constitute is all installed to the wet curtain of washing gas and neutralization wet curtain's top, and the shower nozzle subassembly all corresponds the output of connecting the water pump through the pipeline, and the wet curtain of washing gas and the water pump that neutralization wet curtain corresponds are the immersible pump and correspond the setting in pond A and pond B.
As a further scheme of the invention: the air washing wet curtain and the neutralization wet curtain are both plastic wet curtains with the thickness of 15 cm.
As a further scheme of the invention: and a sulfuric acid storage tank is also arranged in the deodorization chamber, and is used for intermittently replenishing sulfuric acid to the water pool B through a metering pump, so that the pH value of the solution in the water pool B is maintained between 3.5 and 5, and concentrated sulfuric acid is stored in the sulfuric acid storage tank.
As a further scheme of the invention: a plurality of atomizing spray heads distributed in a matrix shape are installed on one side, facing the air inlet, of the wet air washing curtain, the output ends of the atomizing spray heads are opposite to the wet air washing curtain, the input end of each spray head is connected with the output end of the fourth water pump, and the input end of each water pump is communicated with the water tank A through a pipeline.
As a further scheme of the invention: and the end part of the air outlet of the deodorization chamber is vertically connected with a circle of stainless steel partition fence, and a plurality of root trees are filled in an area surrounded by the stainless steel partition fence.
Compared with the prior art, the invention has the beneficial effects that: the invention realizes the concentration of odor by building a deodorization chamber, reduces the concentration of dust and odor in gas by using the operations of washing and neutralization, finally uses roots to slowly flow and adsorb the odor, and simultaneously realizes the rapid solidification and decomposition of the odor by matching with the microorganism strains for deodorization in the roots, thereby treating the odor to the maximum extent and with the most efficiency.
Drawings
FIG. 1 is a schematic structural view of a wet radicle wood microbial deodorization process.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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, in the embodiment of the present invention, a wet curtain root wood microbial deodorization process introduces odorous gas into a deodorization chamber through a draught fan 9, and sequentially performs water washing, neutralization and microbial adsorption and decomposition to achieve deodorization, and the specific process is as follows:
(1) washing with water: a gas-washing wet curtain 1 is arranged in a deodorization chamber, a spray head 8 above the gas-washing wet curtain 1 continuously sprays water to the gas-washing wet curtain, and the water which does not flow continuously in the wet curtain is used for removing dust and a small part of ammonia in the gas;
(2) neutralizing: a neutralization wet curtain 3 is arranged between an air outlet of the deodorization chamber and the scrubbing wet curtain 1, a spray head 8 above the neutralization wet curtain 3 continuously sprays diluted sulfuric acid solution to the neutralization wet curtain, and the sulfuric acid solution is used for absorbing ammonia gas;
(3) and (3) microbial adsorption and decomposition: pile up root wood 7 that thickness is not less than 60cm at the gas outlet department of deodorization room, root wood 7 need regularly carry out the water spray and keep humidity, it has the microbiota that is used for decomposing the ammonia to inoculate on the root wood, the microbiota mainly is anaerobe (sulfate reducing bacteria), hydrolytic bacteria and acidizing bacteria etc., through the loose porous characteristic of root wood self, make it have the effect that certain absorption was detained the ammonia, thereby make the environment that forms the ammonia gathering on the root wood, be favorable to the growth of microbiota, and the microbiota can decompose the ammonia, thereby realize forward development.
The method removes dust and a small part of ammonia gas after the first washing; after the second neutralization operation, ammonia gas is removed by about 80%, a small amount of smell is smelled on site, and finally, after the third root wood deodorization process, no smell can be smelled through the nose.
Foretell draught fan 9 sets up in the air intake department of deodorization room, and the position of deodorization room's air intake through pipe connection pig house, natural pond liquid pond exhaust foul smell to can guarantee that the very first time introduces the peculiar smell in the deodorization room.
Above-mentioned wet curtain 1 of washing gas and wet curtain 3 of neutralization all through connecting piece fixed connection on the inner wall of deodorization room, wet curtain 1 of washing gas and wet curtain 3 of neutralization are the wet curtain of the thick plastics of 15cm, and the wet curtain 1 of washing gas and wet curtain 3 of neutralization correspond respectively under and are provided with pond A2 and pond B5 for receive the liquid that falls on the wet curtain, the shower nozzle subassembly that a plurality of shower nozzles 8 establish ties and constitute is all installed to the wet curtain 1 of washing gas and the top of wet curtain 3 of neutralization, and the shower nozzle subassembly all corresponds the output of connecting water pump 4 through the pipeline, and the wet curtain 1 of washing gas and the water pump 4 that wet curtain 3 of neutralization correspond are the immersible pump and correspond the setting in pond A2 and pond B5, realize the circulation.
A sulfuric acid storage tank 6 is also arranged in the deodorization chamber, the sulfuric acid storage tank 6 intermittently replenishes sulfuric acid to the water pool B5 through a metering pump, so that the pH value of the solution Ph in the water pool B5 is maintained between 3.5 and 5, concentrated sulfuric acid stored in the sulfuric acid storage tank 6, and the initial concentration of the exhaust gas of the pig farm is 20mg/m3The concentration is not high, and when the sulfuric acid is sprayed excessively, the ammonia gas is completely absorbed.
A plurality of atomizing spray heads 10 distributed in a matrix shape are installed on one side, facing the air inlet, of the wet air curtain 1, the output ends of the atomizing spray heads 10 are opposite to the wet air curtain 1, the input end of each spray head 10 is connected with the output end of a fourth water pump, the input end of each water pump is communicated with a water tank A2 through a pipeline, therefore, the humidity of the wet air curtain 1 can be increased, and the air washing effect is improved.
The deodorization chamber is characterized in that a circle of stainless steel partition is vertically connected to the end portion of an air outlet of the deodorization chamber, a plurality of root trees are filled in an area surrounded by the stainless steel partition so as to be in full contact with discharged air to realize adsorption and decomposition of residual ammonia gas, the thickness of the area surrounded by the stainless steel partition is not less than 60cm, certain gaps are kept among the root trees, odor is removed by utilizing microorganisms attached to the root trees, and the root trees are sprayed with water regularly to keep the root trees moist. After three deodorization processes, the pigsty odor can not smell through the nose.
The whole deodorization chamber is required to be fully sealed (only an air inlet and an air outlet are arranged), and the main water used in the deodorization process can cause the humidity in the deodorization chamber to be very high, so that the deodorization chamber is required to be well waterproof and not to have leakage, particularly the ground and a water pool (a waterproof coating is required to be arranged); the draught fan 9 in the scheme is a high-pressure fan, and the reserved space is about 5m (away from a fan wall). The later-stage operation cost of the scheme is not high, mainly comprising sulfuric acid (purchased in later stage at home, the approximate dosage is 0.125 kg/head/month), root wood (purchased in later stage at home), and the electricity charge of related pumps, wherein the water consumption of each piggery is about 2 t/day.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (8)
1. The wet curtain root wood microbial deodorization process is characterized in that odorous gas is introduced into a deodorization chamber through a draught fan and is discharged after being sequentially subjected to washing, neutralization and microbial adsorption and decomposition operations, and the specific process is as follows:
(1) washing with water: installing a wet scrubbing curtain in the deodorization chamber, continuously spraying water to the wet scrubbing curtain by a spray head above the wet scrubbing curtain, and removing dust and a small part of ammonia gas in the gas by using the water which flows down continuously in the wet curtain;
(2) neutralizing: a neutralization wet curtain is arranged between an air outlet of the deodorization chamber and the scrubbing wet curtain, a spray head above the neutralization wet curtain continuously sprays diluted sulfuric acid solution to the neutralization wet curtain, and the sulfuric acid solution is used for absorbing ammonia gas;
(3) and (3) microbial adsorption and decomposition: the root wood with the thickness not less than 60cm is accumulated at the air outlet of the deodorization chamber, the water is regularly sprayed to the root wood to keep the humidity, and the root wood is inoculated with a microbial community for decomposing ammonia gas and used for adsorbing and decomposing residual ammonia gas.
2. The wet shade root wood microbial deodorization process of claim 1, wherein the microbial populations are primarily sulfate-reducing bacteria, hydrolytic bacteria, and acidifying bacteria.
3. The wet curtain root wood microbial deodorization process as claimed in claim 1, wherein the induced draft fan is arranged at an air inlet of the deodorization chamber, and the air inlet of the deodorization chamber is connected with a pigsty and a biogas slurry pool through pipelines to discharge odor, so that the odor can be introduced into the deodorization chamber at the first time.
4. The wet curtain root wood microbial deodorization process as claimed in claim 1, wherein the wet scrubbing curtain and the wet neutralizing curtain are both fixedly connected to the inner wall of the deodorization chamber through connecting pieces, a water tank A and a water tank B are respectively and correspondingly arranged right below the wet scrubbing curtain and the wet neutralizing curtain for receiving liquid falling from the wet curtains, a plurality of spray head assemblies formed by serially connecting spray heads are respectively arranged above the wet scrubbing curtain and the wet neutralizing curtain, the spray head assemblies are both correspondingly connected with the output end of the water pump through pipelines, and the water pumps corresponding to the wet scrubbing curtain and the wet neutralizing curtain are submersible pumps and correspondingly arranged in the water tank A and the water tank B.
5. The wet curtain root wood microbial deodorization process as claimed in claim 1 or 4, wherein the scrubbing wet curtain and the neutralizing wet curtain are both 15cm thick plastic wet curtains.
6. The wet radicchis microbial deodorization process as claimed in claim 1, wherein a sulfuric acid storage tank is further arranged in the deodorization chamber, the sulfuric acid storage tank is used for supplementing sulfuric acid to the water pool B intermittently through a metering pump, so that the pH value of the solution in the water pool B is maintained between 3.5 and 5, and concentrated sulfuric acid is stored in the sulfuric acid storage tank.
7. The wet curtain root wood microbial deodorization process as claimed in claim 5, wherein a plurality of atomizing nozzles are arranged in a matrix shape on one side of the wet air curtain facing the air inlet, the output ends of the atomizing nozzles face the wet air curtain, the input ends of the atomizing nozzles are connected with the output end of a fourth water pump, and the input ends of the water pumps are communicated with the water pool A through pipelines.
8. The wet curtain root wood microbial deodorization process as claimed in claim 6, wherein a circle of stainless steel barriers are vertically connected to the end part of the air outlet of the deodorization chamber, and a plurality of root wood blocks are filled in the area surrounded by the stainless steel barriers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811090872.6A CN110917864A (en) | 2018-09-19 | 2018-09-19 | Wet curtain root wood microbial deodorization process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811090872.6A CN110917864A (en) | 2018-09-19 | 2018-09-19 | Wet curtain root wood microbial deodorization process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110917864A true CN110917864A (en) | 2020-03-27 |
Family
ID=69855901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811090872.6A Pending CN110917864A (en) | 2018-09-19 | 2018-09-19 | Wet curtain root wood microbial deodorization process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110917864A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112354216A (en) * | 2020-10-28 | 2021-02-12 | 苏州艾吉克膜科技有限公司 | Ammonia gas recovery device of natural pond liquid deamination |
| CN114588758A (en) * | 2022-05-10 | 2022-06-07 | 中国农业科学院农业环境与可持续发展研究所 | Multistage combined deodorization, ammonia reduction and sterilization system and method for farm |
-
2018
- 2018-09-19 CN CN201811090872.6A patent/CN110917864A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112354216A (en) * | 2020-10-28 | 2021-02-12 | 苏州艾吉克膜科技有限公司 | Ammonia gas recovery device of natural pond liquid deamination |
| CN114588758A (en) * | 2022-05-10 | 2022-06-07 | 中国农业科学院农业环境与可持续发展研究所 | Multistage combined deodorization, ammonia reduction and sterilization system and method for farm |
| CN114588758B (en) * | 2022-05-10 | 2022-08-02 | 中国农业科学院农业环境与可持续发展研究所 | Multistage combined deodorization, ammonia reduction and sterilization system and method for farm |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108854355A (en) | A kind of system and method for sewage treatment plant's foul smell Collecting and dealing | |
| CN204429097U (en) | A kind of biofilter odor purification system | |
| CN101745310B (en) | Method and device for filtration deodorization by utilizing biological soil | |
| CN104338436B (en) | A kind of efficient processing high concentration is mixed the deodoration system of foul smell | |
| CN210186866U (en) | Odor purification system in livestock and poultry farm house | |
| CN107583450A (en) | One kind wine brewing sewage treatment plant foul gas deodorization process | |
| CN104807085A (en) | Air purifier for removing PM2.5 by microalgae and application method of air purifier | |
| CN104437035A (en) | Multi-stage exhausting and deodorization device for livestock and poultry houses | |
| CN110917864A (en) | Wet curtain root wood microbial deodorization process | |
| CN204247069U (en) | Microorganism filter bed associating deodoration system | |
| CN205216574U (en) | Biofiltration purifies foul smell device | |
| CN104633778A (en) | Air purifier with PM2.5 (particulate matter 2.5) removing function on basis of micro-algae | |
| CN201565254U (en) | Deodorization device of biological filter | |
| CN117160165A (en) | Deodorization system and method for treating livestock manure fermentation shed | |
| CN209020187U (en) | A kind of biofilter multistage deodorization device | |
| CN208893851U (en) | A kind of system of sewage treatment plant's foul smell Collecting and dealing | |
| CN204320063U (en) | A kind of multistage exhaust odor removal for poultry house | |
| CN203568903U (en) | Ecological floating bed with artificial meadow | |
| CN205948665U (en) | Printing and dyeing wastewater hydrolytic acidification handles biological deodorization equipment of workshop section | |
| CN201534058U (en) | Device utilizing biological soil to filter and deodorize | |
| CN205676329U (en) | Integrated circular sewage disposal system | |
| CN205412665U (en) | Box organic waste gas biological processing device of integration | |
| CN205933575U (en) | Little biological deodorization equipment of overall process | |
| CN204502792U (en) | A kind of biological filter deodorizing device | |
| CN212651612U (en) | Novel tower deodorization biological filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200327 |