CN211864515U - Biological filter gas deodorization device of sewage treatment system - Google Patents
Biological filter gas deodorization device of sewage treatment system Download PDFInfo
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- CN211864515U CN211864515U CN201922401576.XU CN201922401576U CN211864515U CN 211864515 U CN211864515 U CN 211864515U CN 201922401576 U CN201922401576 U CN 201922401576U CN 211864515 U CN211864515 U CN 211864515U
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Abstract
The utility model provides a sewage treatment system's biological filter gas deodorizing device, including gas collection conveying mechanism, wash mechanism and biological deodorization tank with alkaline, gas collection conveying mechanism is linked together through first air duct and the bottom air inlet that washes the mechanism with alkaline, wash the top gas vent of mechanism with alkaline and be linked together through second air duct and biological deodorization tank top air inlet, glass steel grating is laid to biological deodorization tank lower part, divide biological deodorization tank into prewashing pond and biological filter through setting up vertical baffle on the glass steel grating, exhaust pipe is connected to biological filter top gas vent, be equipped with first biofilm carrier on the glass grating in the prewashing pond, be equipped with the second biofilm carrier on the glass grating in the biological filter. The utility model discloses equipment fixing is simple and convenient, improves exhaust purification efficiency.
Description
Technical Field
The utility model belongs to the technical field of exhaust-gas treatment, especially, relate to a sewage treatment system's gaseous deodorizing device of biological filter.
Background
With the development of the economy of China, particularly the advance of the economy of China to thirteen five, the environmental problem is gradually emphasized by the China, the coverage rate of sewage treatment plants in cities and towns of China reaches over 90 percent, and the centralized collection and treatment of sewage of the residents in cities and towns of China are basically met. However, with the continuous expansion of urban scale, the distance between the sewage treatment plant and the residents is closer and closer, and during the process of collecting and treating the sewage of the urban sewage treatment plant, organic matters in the sewage are subjected to biochemical reaction to mainly generate various malodorous gases such as ammonia gas, hydrogen sulfide, methyl mercaptan, volatile organic matters and the like, the gases not only corrode pipelines, but also generate malodor which causes great harm to the health of people to cause nausea, vomiting and the like, and even more, the gases may cause teratogenesis, carcinogenesis and the like. Therefore, sewage treatment plant odor
The problems caused by the method are continuously upgraded, and the odor treatment is gradually a focus problem of public attention.
The main process of sewage treatment comprises the working procedures of pretreatment, biological treatment, secondary precipitation, disinfection, sludge treatment and the like. The sewage from municipal sewage plants generally has an irritating odor. Mainly comes from the links of a grating, a pretreatment device, a primary sedimentation tank, a biological treatment device, a sludge concentration tank and the like,mainly by H2S and NH3Mainly, it has the smell of egg. If industrial waste water is mixed in the sewage, other foul smells may be caused. The normal activated sludge is dark brown, has a native smell which is caused by geosmin and isoborneol (borneol) secreted in the microbial catabolism process, and the two substances are blown off into the atmosphere in the biological treatment process to generate the native smell.
The biological deodorization is mainly characterized in that microorganisms attached to a solid carrier (filler) are utilized to convert odor substances in collected waste gas through physiological metabolism of the microorganisms under proper conditions, so that target pollutants are effectively decomposed and removed, and the purpose of treating the odor is achieved. Microorganisms oxidize organic substances into substances such as carbon dioxide and water, but the process is difficult to be carried out in a gas phase, so that the process of purifying organic waste gas is mostly completed in a liquid phase. The waste gas purifying process by the microorganism is mainly divided into two parts of mass transfer and biodegradation. The rates of these two processes are directly affecting the purification of VOCs. The microorganisms growing on the solid support require sufficient organic nutrients and therefore the solid support must have a high organic content. In order to maintain high activity of the microbial deodorant, a good survival condition must be created for the microbial deodorant.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the problem that exists, provide a sewage treatment system's gaseous deodorizing device of biological filter, improve waste gas and shift to the mass transfer rate in liquid phase by the gas phase to improve foul smell purification efficiency.
The utility model provides a technical scheme that above-mentioned technical problem adopted is: the utility model provides a sewage treatment system's gaseous deodorizing device of biological filter, a serial communication port, including gas collection conveying mechanism, alkali wash mechanism and biological deodorization tank, gas collection conveying mechanism through first air duct with alkali wash the bottom air inlet of mechanism and be linked together, alkali wash the top gas vent of mechanism through the second air duct with biological deodorization tank top air inlet is linked together, is equipped with a plurality of access holes on the biological deodorization tank roof, and glass steel grating is laid to the lower part, divide biological deodorization tank into prewashing pond and biological filter through setting up vertical baffle on the glass steel grating, exhaust pipe is connected to biological filter top gas vent, be equipped with first biofilm carrier on the glass grating in the prewashing pond, be equipped with the second biofilm carrier on the glass grating in the biological filter.
According to the scheme, the gas collection conveying mechanism comprises a gas collection pipe, a fan and an air inlet pipe, the gas collection pipe is communicated with the air inlet pipe, the fan is arranged in the air inlet pipe, and the air inlet pipe is communicated with the first air guide pipe.
According to the scheme, the alkaline washing mechanism comprises an alkaline washing tower, an alkaline washing nozzle, an alkaline washing pipe, a chemical water tank and a chemical circulating pump, wherein a glass grating is arranged in the middle of the alkaline washing tower, the first air duct is communicated with an air inlet at the bottom of the alkaline washing tower, the alkaline washing nozzle is arranged at the top of the alkaline washing tower, the alkaline washing pipe is connected with the chemical water tank, and the chemical circulating pump is arranged on the alkaline washing pipe.
According to the scheme, the bottom of the exhaust pipe and the bottom of the air inlet pipe are respectively provided with a pilot shower valve.
According to the scheme, the prewashing top of the tank is provided with the prewashing nozzle, the prewashing nozzle is connected with the prewashing water tank through the prewashing pipe, the prewashing pipe is provided with the prewashing water pump and the prewashing pressure gauge, and the second air duct is communicated with the air inlet at the top of the prewashing tank.
According to the scheme, the top of the biological filter tank is provided with the irrigation nozzle, the irrigation nozzle is connected with the irrigation water tank through the irrigation pipe, and the irrigation pipe is provided with the irrigation water pump and the irrigation pressure gauge.
According to the scheme, the first biological filler is a biological ball filler and has the thickness of 110 cm-130 cm, the second biological filler is an upper layer and a lower layer, the upper layer is a bark filler and has the thickness of 20 cm-30 cm, and the lower layer is a volcanic rock filler and has the thickness of 90 cm-100 cm.
According to the scheme, the length of the exhaust pipe is 15-18 m, and the diameter of the exhaust pipe is 0.8-1.2 m.
According to the scheme, the biological deodorization tank is of a rectangular body full-closed structure and is made of a steel skeleton and a glass fiber reinforced plastic shell.
The utility model has the advantages that: 1. the gas deodorization device of the biological filter tank of the sewage treatment system is provided, the deodorization device has strong impact resistance and better adaptability to sudden load change, the integrated biological filter tank is integrated with a humidification area and a filter bed, the tank body is of a fixed rectangular body full-closed structure, a steel skeleton is lined with a corrosion-resistant glass steel shell, and the quality is excellent and attractive; 2. During the use period of the biological filler, no nutrient solution is required to be added, the occupied area is saved, and the retention time of gas collected by the system passing through the filter bed is 20-24 seconds. The service life of the filter material is longer than 5 years, the filter material does not need to be replaced during normal operation, and the system can be operated at the interval of at most 2 months without re-culturing microorganisms; 3. the filler of the prewashing tank is a polyhedral hollow sphere, so that the prewashing tank has large specific surface area, wetting area and proper filler porosity, ensures that gas and liquid in the prewashing tank are uniformly distributed and have less passing resistance, is favorable for gas-liquid mass transfer rate, and increases the absorption efficiency.
Drawings
Fig. 1 is a front view of an embodiment of the present invention.
Fig. 2 is a top view of an embodiment of the present invention.
Detailed Description
For a better understanding of the present invention, the following description is given in conjunction with the accompanying drawings and examples.
As shown in fig. 1-2, a sewage treatment system's biological filter gas deodorizing device, including gas collection conveying mechanism, wash mechanism and biological deodorization tank with alkaline, gas collection conveying mechanism is linked together through first air duct 1 and the bottom air inlet that washes the mechanism with alkaline, wash mechanism's top gas vent with alkaline through second air duct 2 and biological deodorization tank top air inlet and be linked together, be equipped with a plurality of access holes 3 on the biological deodorization tank roof, glass steel grating 4 is laid to the lower part, divide biological deodorization tank into prewashing pond 6 and biological filter 7 through setting up vertical baffle 5 on the glass steel grating, exhaust pipe 8 is connected to biological filter top gas vent, be equipped with first biofilm carrier on the glass grating in the prewashing pond, be equipped with the second biofilm carrier on the glass grating in the biological filter.
The gas collection conveying mechanism comprises a gas collection pipe 9, a fan 10 and an air inlet pipe 11, the gas collection pipe is communicated with the air inlet pipe, the fan is arranged in the air inlet pipe, the air inlet pipe is communicated with a first air guide pipe, gas of each structure (including sewage treatment system structures such as an adjusting tank, a hydrolysis acidification tank and an aerobic tank) generating stink is uniformly collected, a centralized induced air conveying mode is adopted, micro negative pressure is kept in a waste gas generation source closed space, and therefore waste gas can be continuously conveyed to the air inlet pipe and conveyed to a subsequent deodorization mechanism through the first air guide pipe.
The alkali washing mechanism comprises an alkali washing tower 12, an alkali washing nozzle 13, an alkali washing pipe 14, a chemical water tank 15 and a chemical circulating pump 16, wherein a glass grating is arranged in the middle of the alkali washing tower, a first air duct is communicated with an air inlet at the bottom of the alkali washing tower, the alkali washing nozzle is arranged at the top of the alkali washing tower and is connected with the chemical water tank through the alkali washing pipe, and the chemical circulating pump is arranged on the alkali washing pipe. The alkali wash tower has the functions of spraying and absorbing, can dissolve easily-soluble substances in the waste gas and absorb and remove acid gas in the waste gas, the waste gas enters the bottom of the alkali wash tower and then upwards passes through the glass grating, and the glass grating plays a role in balancing the waste gas, so that the waste gas uniformly flows upwards in the countercurrent direction and finally enters the deodorization tank through the second gas guide pipe.
The top of the prewashing pool is provided with a prewashing nozzle 17 which is connected with a prewashing water tank 19 through a prewashing pipe 18, the prewashing pipe is provided with a prewashing water pump 20 and a prewashing pressure gauge 21, the second air duct is communicated with an air inlet at the top of the prewashing pool, and the prewashing pool is filled with a first biological filler which is selected from a biological ball filler 22 and has the thickness of 110 cm-130 cm.
The top of the biological filter is provided with an irrigation nozzle 23 which is connected with an irrigation water tank 25 through an irrigation pipe 24, the irrigation pipe is provided with an irrigation water pump 26 and an irrigation pressure gauge 27, the biological filter is filled with a second biological filler which is divided into an upper layer and a lower layer, the upper layer is a bark filler 28 and has a thickness of 20 cm-30 cm, the lower layer is a volcanic filler 29 and has a thickness of 90 cm-100 cm.
The pre-washing tank is communicated with the bottom of the biological filter, waste gas can enter the biological filter through the pre-washing tank, and the humidified waste gas also passes through the filler in the biological filter in a countercurrent mode to be purified.
The length of the exhaust pipe is 12 m-18 m, the diameter is 0.8 m-1.2 m, and the purified waste gas is discharged through the exhaust pipe.
The biological deodorization tank is of a rectangular body full-closed structure and is made of a steel skeleton and glass fiber reinforced plastic casing, and the top of the biological deodorization tank is provided with an access hole, so that maintenance work such as replacement, inspection and the like of a nozzle can be completed without opening the casing of the equipment. The bottom of the exhaust pipe and the bottom of the air inlet pipe are respectively provided with a guide shower valve 30 which can discharge condensed water in the pipeline.
When the device is used, waste gas collected by the gas collecting pipe enters the alkaline tower from the bottom through the first gas guide pipe under the pumping action of the fan through the gas inlet pipe, the waste gas uniformly rises from the bottom in the alkaline tower under the action of the glass fiber reinforced plastic grating, and the alkaline liquor is uniformly sprayed from top to bottom under the action of the alkaline washing nozzle arranged in the alkaline tower to form counter flow with the waste gas from bottom to top, so that the alkaline liquor can fully dissolve soluble substances in the waste gas and can fully absorb and remove acid gas in the waste gas; the waste gas absorbed by the alkali liquor continuously enters a front lattice prewashing tank of the biological deodorization tank from top to bottom through a second gas guide tube, the waste gas in the prewashing tank is contacted with water under the uniform spraying action of a built-in prewashing nozzle and then is gradually transferred to a liquid phase from a gas phase, microorganisms can oxidize organic matters into substances such as carbon dioxide, water and the like, but the process is difficult to be carried out in the gas phase, most of the processes for purifying the organic waste gas are finished in the liquid phase, so that the mass transfer process of the waste gas in the prewashing tank provides sufficient and favorable conditions for the biological filter tank to degrade the organic waste gas, and meanwhile, microorganisms attached to the biological spherical filler filled in the prewashing tank can also carry out preliminary biodegradation and absorption on odor components in the waste gas; the waste gas passing through the prewashing tank passes through a glass fiber reinforced plastic grating and then enters a back lattice biological filter tank of the biological deodorization tank from bottom to top, in the biological filter tank, on one hand, loose and porous volcanic filler fully absorbs odor components, on the other hand, microorganisms attached to the volcanic filler perform first biodegradation on the odor components in the biological filter tank and complete second biodegradation in the biological filter tank when the microorganisms pass through bark filler, and the odor components in the waste gas are finally converted into CO after triple absorption and degradation processes of an alkali washing tower, a prewashing tank and the biological filter tank2、H2O and inorganic salt, thereby achieving the effect of deodorization; finally, the standard-reaching waste gas passing through the biological filter enters an exhaust pipe with the length of 15-18 m from the top of the biological filter and is discharged into the atmosphere.
Claims (9)
1. The utility model provides a sewage treatment system's gaseous deodorizing device of biological filter, a serial communication port, including gas collection conveying mechanism, alkali wash mechanism and biological deodorization tank, gas collection conveying mechanism through first air duct with alkali wash the bottom air inlet of mechanism and be linked together, alkali wash the top gas vent of mechanism through the second air duct with biological deodorization tank top air inlet is linked together, is equipped with a plurality of access holes on the biological deodorization tank roof, and glass steel grating is laid to the lower part, divide biological deodorization tank into prewashing pond and biological filter through setting up vertical baffle on the glass steel grating, exhaust pipe is connected to biological filter top gas vent, be equipped with first biofilm carrier on the glass grating in the prewashing pond, be equipped with the second biofilm carrier on the glass grating in the biological filter.
2. A biofilter gas deodorization apparatus according to claim 1, wherein said gas collection delivery mechanism comprises a gas collection tube, a blower and an inlet tube, said gas collection tube being in communication with said inlet tube, said blower being disposed in said inlet tube, said inlet tube being in communication with said first gas-guide tube.
3. The biofilter gas deodorization device for a sewage treatment system according to claim 1, wherein said caustic washing mechanism comprises a caustic washing tower, a caustic washing nozzle, a caustic washing pipe, a chemical water tank and a chemical circulating pump, a glass grid is arranged in the middle of said caustic washing tower, said first gas duct is communicated with an air inlet at the bottom of the caustic washing tower, said caustic washing nozzle is arranged at the top of the caustic washing tower and connected with said chemical water tank through said caustic washing pipe, and said chemical circulating pump is arranged on the caustic washing pipe.
4. A biofilter gas deodorization apparatus for a sewage treatment system according to claim 2, wherein a drain valve is provided at a bottom of said exhaust pipe and a bottom of said intake pipe, respectively.
5. A biofilter gas deodorization apparatus for a sewage treatment system according to claim 1, wherein said prewash tank is provided at a top thereof with a prewash nozzle connected to a prewash water tank through a prewash pipe, said prewash pipe is provided with a prewash water pump and a prewash pressure gauge, and said second air duct is communicated with an air inlet at the top of the prewash tank.
6. A biofilter gas deodorization apparatus according to claim 1 or 5, wherein said biofilter is provided at a top thereof with an irrigation nozzle connected to an irrigation water tank through an irrigation pipe, said irrigation pipe being provided with an irrigation water pump and an irrigation pressure gauge.
7. A biofilter gas deodorization apparatus according to claim 6, wherein said first bio-packing is bio-sphere packing having a thickness of 110cm to 130cm, said second bio-packing is two upper and lower layers, the upper layer is bark packing having a thickness of 20cm to 30cm, and the lower layer is volcanic rock packing having a thickness of 90cm to 100 cm.
8. A biofilter gas deodorizing device according to claim 1, wherein said exhaust pipe has a length of 15m to 18m and a diameter of 0.8m to 1.2 m.
9. A biofilter gas deodorization apparatus according to claim 1, wherein said biological deodorization basin is of a rectangular body totally enclosed structure and is made of a steel skeleton and glass fiber reinforced plastic casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922401576.XU CN211864515U (en) | 2019-12-27 | 2019-12-27 | Biological filter gas deodorization device of sewage treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922401576.XU CN211864515U (en) | 2019-12-27 | 2019-12-27 | Biological filter gas deodorization device of sewage treatment system |
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| Publication Number | Publication Date |
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| CN211864515U true CN211864515U (en) | 2020-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922401576.XU Expired - Fee Related CN211864515U (en) | 2019-12-27 | 2019-12-27 | Biological filter gas deodorization device of sewage treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113351013A (en) * | 2021-05-28 | 2021-09-07 | 新疆广汇新能源有限公司 | Sewage VOC (volatile organic compound) odor treatment method |
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2019
- 2019-12-27 CN CN201922401576.XU patent/CN211864515U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113351013A (en) * | 2021-05-28 | 2021-09-07 | 新疆广汇新能源有限公司 | Sewage VOC (volatile organic compound) odor treatment method |
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Granted publication date: 20201106 Termination date: 20211227 |