CN214598111U - Sewage treatment plant waste gas deodorization processing system - Google Patents
Sewage treatment plant waste gas deodorization processing system Download PDFInfo
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- CN214598111U CN214598111U CN202023050377.8U CN202023050377U CN214598111U CN 214598111 U CN214598111 U CN 214598111U CN 202023050377 U CN202023050377 U CN 202023050377U CN 214598111 U CN214598111 U CN 214598111U
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Abstract
本实用新型涉及废气治理技术领域，公开了一种污水处理厂废气除臭处理系统，包括依次通过管道连接的集气管、抽吸风机、一体化除臭装置、排气管以及排气筒；所述集气管用于将废气源产生的废气收集后经抽吸风机输送至一体化除臭装置进行处理；所述一体化除臭装置的前端设置有进气口，其后端设置有排气口，其内部设置有碱洗段、水洗段以及生物过滤段，所述生物过滤段内设置有生物滤床，废气进入一体化除臭装置后，依次经过碱液喷淋吸收、水喷淋洗涤以及生物过滤降解处理后，经所述排气管送往排气筒排放。本实用新型的废气除臭处理系统工艺设计合理，各装置相互串联，便于操控，废气除臭净化效率高、效果好，适合推广应用。
The utility model relates to the technical field of waste gas treatment, and discloses a waste gas deodorization treatment system of a sewage treatment plant, which comprises a gas collecting pipe, a suction fan, an integrated deodorizing device, an exhaust pipe and an exhaust pipe connected in sequence through pipes; The gas collecting pipe is used to collect the exhaust gas generated by the exhaust gas source and then transport it to the integrated deodorization device for processing by the suction fan; the front end of the integrated deodorization device is provided with an air inlet, and the rear end is provided with an exhaust port , which is provided with alkali washing section, water washing section and biological filtration section. The biological filtration section is provided with biological filter bed. After the waste gas enters the integrated deodorization device, it is sequentially subjected to lye spray absorption, water spray washing and After being degraded by biological filtration, it is sent to the exhaust pipe for discharge through the exhaust pipe. The waste gas deodorization treatment system of the utility model has a reasonable technological design, and the devices are connected in series with each other, which is easy to control, has high waste gas deodorization purification efficiency and good effect, and is suitable for popularization and application.
Description
Technical Field
The utility model relates to a waste gas treatment technical field, more specifically relates to a sewage treatment plant waste gas deodorization processing system.
Background
In recent years, with the increasing attention of people to environmental problems, cities and towns and various enterprises have built sewage treatment plants one after another, so that the sewage treatment rates of all places are comprehensively improved, and the further deterioration of water pollution is effectively controlled. Most sewage plants can generate foul waste gas in the operation process, wherein the kinds of foul pollutants are various, and H is mainly generated2S、NH3、CH4Pyrophosphoric acid, methyl mercaptan, skatole, propionic acid, butyric acid and the like, and because the sewage plant generates a large amount of waste gas, has a low organic matter concentration, a low pH value and a large amount of acidic waste gas, and the human body has a strong sensory reaction to malodorous gas, the waste gas drifts to surrounding residential areas, so that secondary pollution is easily generated, and adverse effects are caused.
Therefore, with the perfection and implementation of various national environmental regulations, the discharge of malodorous pollutants is strictly limited, and many sewage plants adopt corresponding deodorization facilities to prevent and avoid the influence of the odor of the sewage treatment plants on the surrounding environment and the life of residents.
At present, the methods for treating waste gas are various, and the common methods comprise a condensation recovery method, a direct combustion method, a catalytic combustion method, an activated carbon adsorption method and the like, which have different characteristics, but all have defects, such as large investment, high energy consumption and high operating cost; the direct combustion method is suitable for treating high-concentration waste gas, usually needs a combustion improver or heating, has high energy consumption and high operation technical requirement, and is not easy to control and master; the catalytic combustion method is suitable for treating high-temperature and high-concentration organic waste gas, and is not suitable for treating low-concentration and high-air-volume organic waste gas; the activated carbon adsorption method has the defects that the activated carbon needs to be replaced regularly, the replaced activated carbon belongs to dangerous solid waste, and the treatment cost is high, so the common methods are not suitable for treating the waste gas of sewage plants.
Therefore, it is necessary to provide a sewage treatment plant exhaust gas deodorization treatment system which solves the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a sewage treatment plant waste gas deodorization processing system mainly used solves condensation recovery method, direct combustion method, catalytic combustion method, active carbon adsorption method etc. that present exhaust-gas treatment is used always and all exists not enoughly, for example invest in big, the energy consumption is high, technical requirement is high, the running cost is high, can not be applicable to the problem of sewage plant waste gas deodorization processing.
For solving the technical problem, the utility model discloses the technical scheme who adopts as follows:
a sewage treatment plant waste gas deodorization treatment system is used for carrying out deodorization treatment on waste gas collected after waste gas sources such as a coarse grid, a lift pump room, a waste water regulating tank, an anaerobic tank, an emergency accident tank, a hydrolysis acidification tank, a sludge dewatering machine room and the like of a sewage treatment plant are closed, and the waste gas deodorization treatment system comprises a gas collecting pipe, a suction fan, an integrated deodorization device, an exhaust pipe and an exhaust barrel which are sequentially connected through a pipeline;
the gas collecting pipe is communicated with the closed collecting hoods arranged around the waste gas sources and is used for conveying the collected waste gas to the integrated deodorization device for treatment through the suction fan;
the integrated deodorization device is of a box-type structure, an air inlet connected with the gas collecting pipe is formed in the lower side of the front end of the integrated deodorization device, an air outlet connected with the exhaust pipe is formed in the upper side of the rear end of the integrated deodorization device, an alkaline washing section, a water washing section and a biological filtering section are sequentially arranged in the integrated deodorization device along the air flow direction, a biological filter bed is arranged in the biological filtering section, the top of the alkaline washing section is communicated with the top of the water washing section, the bottom of the water washing section is communicated with the bottom of the biological filtering section, and the flowing direction of waste gas in the integrated deodorization device is as follows: after entering the device from the air inlet, the water enters the device and then passes through the alkaline washing section upwards, the water passes through the water washing section downwards after being bent at the top of the alkaline washing section, and then is bent at the bottom of the water washing section and passes through the biological filtering section, and finally is discharged through the air outlet;
and the waste gas conveyed by the gas collecting pipe enters the integrated deodorization device, is sequentially subjected to alkali liquor spraying absorption, water spraying washing and biological filtering degradation treatment, and then is conveyed to the exhaust funnel through the exhaust pipe to be discharged.
Furthermore, the alkali washing section is provided with a first packing layer and a first spraying device at intervals from bottom to top, the water washing section is provided with a second packing layer and a second spraying device at intervals from bottom to top, a third spraying device is arranged above a biological filter bed of the biological filter section, a grating plate for uniform gas distribution is arranged at the bottom of the biological filter bed, the packing layer and the spraying layer are arranged to enhance the gas-liquid contact mixing effect of the alkali washing section, the water washing section and the biological filter section, and the mass transfer efficiency is improved.
Furthermore, a water retaining weir is arranged at the communication position of the bottom of the water washing section and the bottom of the biological filtering section and used for isolating accumulated liquid at the bottom of the water washing section and the bottom of the biological filtering section and preventing series flow.
Furthermore, an alkali liquor tank, a spraying water tank and a liquid supplementing tank are arranged outside the integrated deodorization device in a matched manner, the alkali liquor tank is communicated with the first spraying device through an alkali liquor conveying pipe arranged between the alkali liquor tank and the first spraying device, the spraying water tank is communicated with the second spraying device through a spraying water conveying pipe arranged between the spraying water tank and the second spraying device, the liquid supplementing tank is communicated with the third spraying device through a liquid conveying pipe arranged between the third spraying device and the third spraying device, and the liquid supplementing tank is used for supplementing nutrient solution or water required by growth and reproduction of microorganisms to the biological filtration section;
the alkali liquor conveying pipe is provided with an alkali liquor conveying pump, the spray water conveying pipe is provided with a spray water conveying pump, and the liquid conveying pipe is provided with a liquid conveying pump.
Further, an alkali liquor recovery pipe communicated with the bottom of the alkali washing section is arranged at the top of the alkali liquor tank, and an alkali liquor discharge pipe is arranged at the bottom of the alkali liquor tank;
a spray water recovery pipe communicated with the bottom of the washing section is arranged at the top of the spray water tank, and a waste water discharge pipe is arranged at the bottom of the spray water tank;
a liquid recovery pipe communicated with the bottom of the biological filtering section is arranged at the top of the liquid supplementing tank, and a waste liquid discharge pipe is arranged at the bottom of the liquid supplementing tank;
and the tail ends of the alkali liquor discharge pipe, the waste water discharge pipe and the waste liquid discharge pipe are converged and then led to a factory sewage treatment system for retreatment.
Furthermore, a defogging device is arranged at the upper part of the alkaline washing section, and the defogging device adopts a wire mesh defogger or a baffle defogger. The aim at who sets up defogging device, waste gas is after the alkali cleaning treatment, wherein can smuggle the tiny liquid drop of a large amount of alkali lye secretly, aggravates after-treatment system's load easily and influences the biological purification treatment effect of after-treatment system, consequently need remove the foam through defogging device defogging, reduces the foam and smugglies secretly.
Furthermore, a plurality of spiral nozzles are arranged at the bottoms of the first spraying device, the second spraying device and the third spraying device in a matched manner. The spiral nozzle is a typical impact type dispersion spraying component, no part is arranged in the spiral nozzle, the spiral nozzle is a smooth channel, the spiral nozzle is naturally designed and has the characteristic of blockage resistance, and water flow is changed into tiny liquid beads to be sprayed out to form fog after being tangent and collided with a continuously reduced spiral surface on the periphery of the spiral nozzle.
Furthermore, the lye tank, the spray water tank and the liquid supplementing tank are communicated with a tap water pipe which is matched with the system and used for supplementing tap water to each tank, and floating ball type liquid level meters which are contacted with the liquid level are correspondingly arranged in the lye tank, the spray water tank and the liquid supplementing tank, so that the tap water can be supplemented to each tank according to the liquid level requirement.
Further, the first packing layer and the second packing layer are filled with Taylor rosette packing. The taylor rosette packing is similar to a sphere formed by winding a spiral spring end to end, and is mainly characterized in that the packing has the advantages of large void ratio, difficult blockage, large flux, small resistance and the like, and the gap of the packing has higher liquid stagnation amount, so that the liquid in the packing layer can stay for a longer time, thereby increasing the contact time of gas and liquid and improving the mass transfer efficiency.
Furthermore, an automatic detection device is arranged on the exhaust pipe, and the exhaust pipe can detect and feed back whether the components of the exhaust gas reach the standard in real time.
Furthermore, the bottom of aiutage is provided with the fluid-discharge tube for regularly discharge inside hydrops, it is big to prevent that the too high air current resistance that leads to of liquid level in the aiutage.
Furthermore, a composite filler containing composite polyurethane filler, ceramsite, bark and volcanic rock is filled in the biological filter bed of the biological filter section, and microorganism composite strains are attached to the composite filler. The microbial composite strain adopts different types of strains commonly used in the sewage treatment industry, and can enable the biological filter bed to create a proper environment for microbial growth, such as proper temperature, humidity, pH value conditions and nutrient substances, by effective control. The organic matter in the waste gas can provide nutrient elements such as carbon, nitrogen, phosphorus and partial trace elements required by the growth and reproduction of microorganisms, and when certain nutrient elements are deficient, a proper amount of nutrient elements can be selectively supplied, so that when the waste gas passes through the biological filter bed, the malodorous components in the waste gas are subjected to biological oxidation degradation by the microbial compound strains on the biological filter bed, and the deep purification and deodorization effects of the waste gas are achieved.
The utility model discloses a sewage treatment plant waste gas deodorization processing system rationale as follows: in the alkaline washing section of the integrated deodorization device, sodium hydroxide solution (with the concentration of 30%) is used as alkaline liquor to spray and wash the waste gas, and H contained in the waste gas passes through the alkaline washing section from bottom to top by utilizing the gas-liquid phase countercurrent mass transfer principle2S、SO2Malodorous acid gases such as methyl mercaptan and the like and alkali liquor generate irreversible chemical reaction to generate new salt substances which fall along with the alkali liquor and are converged at the bottom of the alkali washing section, so that the primary purification and deodorization purposes of waste gas are achieved;
in the water washing section, raw water is adopted to wash the waste gas after alkali washing, and soluble components in the waste gas and alkali liquor carried in the waste gas are further washed and absorbed, so that secondary purification treatment is carried out on the waste gas;
in the biological filtering section, on the basis of the principle of a biological deodorization method, the malodorous organic pollutants in the waste gas are absorbed, metabolized and utilized by microorganisms by utilizing the biochemical action of the microorganisms and are used as nutrient substances required by the growth and the propagation of the malodorous organic pollutants, so that the organic pollutants are finally decomposed into harmless substances such as water, carbon dioxide and the like. The process of removing pollutants in waste gas by microorganisms is complex and consists of physical, chemical, physicochemical and biochemical reactions, and the purification process can be divided into three steps: firstly, a malodorous gas dissolving process; adsorption and absorption processes of malodorous substances; ③ the biological degradation process of the malodorous substance. Therefore, the microbial composite strain formed by multiple biological strains is cultured and attached in the composite filler of the biological filter bed, a suitable environment for the growth of the microorganisms can be created through effective control, organic matters in the waste gas can provide required nutrient elements such as carbon, nitrogen, phosphorus and partial trace elements for the growth and the propagation of the microorganisms, so that the malodorous components in the waste gas are subjected to biological oxidation degradation through the microbial composite strain on the biological filter bed when the waste gas passes through the biological filter bed, the waste gas is subjected to deep purification treatment, and sulfuric acid, nitrous acid, spraying waste liquid and the like generated in the process are collected at the bottom of the biological filter section and sent to a sewage treatment system for retreatment.
Compared with the prior art, the utility model discloses technical scheme's beneficial effect is:
1. the waste gas deodorization treatment system of the sewage treatment plant has reasonable process design, integrated combination of deodorization equipment, small occupied area, low investment cost, mutual series arrangement of the devices, advanced process technology, convenient control and management of the equipment and contribution to continuous and stable operation;
2. the waste gas deodorization treatment system of the sewage treatment plant utilizes the waste gas deodorization and purification principle of 'alkali wash spray + biological filtration degradation', and the waste gas generated by the waste gas source of the sewage treatment plant is intensively conveyed into the integrated deodorization device by the gas collecting pipe, and after alkali liquor spray absorption, water spray washing and biological filtration degradation treatment in sequence, the waste gas is discharged by the exhaust funnel in a high-altitude standard-reaching manner, so that the waste gas deodorization and purification system meets the environmental protection requirement, has high waste gas deodorization and purification efficiency and good effect, and is suitable for popularization and application;
3. the utility model discloses an alkali lye section among the sewage treatment plant waste gas deodorization processing system, the back cyclic utilization all can be retrieved to the liquid that sprays of washing section to saving system water consumption reduces running cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a process flow diagram of the waste gas deodorization treatment system of the sewage treatment plant of the present invention.
In the figure: 1-a gas collecting pipe, 2-a suction fan, 3-an integrated deodorization device, 31-a gas inlet, 32-a gas outlet, 33-an alkali washing section, 331-a first packing layer, 332-a first spraying device, 333-a demisting device, 34-a water washing section, 341-a second packing layer, 342-a second spraying device, 35-a biological filtering section, 351-a biological filter bed, 352-a third spraying device, 353-a grating plate, 36-a water retaining weir, 4-an exhaust pipe, 41-an automatic detection device, 5-an exhaust cylinder, 51-a liquid discharge pipe, 6-an alkali liquor groove, 61-an alkali liquor conveying pipe, 611-an alkali liquor conveying pump, 62-an alkali liquor recycling pipe, 63-an alkali liquor discharge pipe, 7-a spraying water groove and 71-a spraying water conveying pipe, 711-spray water delivery pump, 72-spray water recovery pipe, 73-waste water discharge pipe, 8-liquid supplementing tank, 81-liquid delivery pipe, 811-liquid delivery pump, 82-liquid recovery pipe, 83-waste liquid discharge pipe and 9-tap water pipe.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for better illustration of the present embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The description of "first", "second", etc. referred to in the embodiments of the present invention is for descriptive purposes only and is not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated, whereby the features defined as "first", "second", etc. may explicitly or implicitly include at least one such feature.
Meanwhile, the terms "upper", "lower", "front", "rear", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the designated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, so to speak, connected internally to the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
For the purpose of clearly understanding the technical features, objects, and effects of the present invention, the detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, but the embodiments of the present invention are not limited thereto.
As shown in fig. 1, a waste gas deodorization treatment system for a sewage treatment plant is used for deodorizing waste gas collected after sealing waste gas sources such as a coarse grid, a lift pump room, a waste water adjusting tank, an anaerobic tank, an emergency tank, a hydrolysis acidification tank, a sludge dewatering machine room and the like of the sewage treatment plant, and comprises a gas collecting pipe 1, a suction fan 2, an integrated deodorization device 3, an exhaust pipe 4 and an exhaust barrel 5 which are sequentially connected through a pipeline;
the gas collecting pipe 1 is communicated with a closed collecting cover (not shown in the figure) arranged around each waste gas source and is used for pumping the collected waste gas to the integrated deodorization device 3 for treatment through the suction fan 2;
the waste gas delivered by the gas collecting pipe 1 enters the integrated deodorization device 3, is sequentially subjected to alkali liquor spraying absorption, water spraying washing and biological filtration degradation treatment, and then is delivered to the exhaust funnel 5 through the exhaust pipe 4 for emission.
The alkaline washing section 33 is provided with first packing layer 331 and first spray set 332 from bottom to top at interval, the water washing section 34 is provided with second packing layer 341 and second spray set 342 from bottom to top at interval, biofilter 351 top of biofilter section 35 is provided with third spray set 352, biofilter 351 bottom is provided with grating 353 that is used for even gas distribution and supports biofilter 351, the purpose of setting up packing layer and spray layer is in order to strengthen the gas-liquid phase contact mixing effect of alkaline washing section 33, water washing section 34 and biofilter section 35, improve mass transfer efficiency.
The bottom of the washing section 34 is communicated with the bottom of the biological filtering section 35 to form a water-retaining weir 36 for isolating the accumulated liquid at the bottom of the washing section 34 and the bottom of the biological filtering section 35 to prevent series flow.
The outer side of the integrated deodorization device 3 is provided with an alkali liquor tank 6, a spraying water tank 7 and a liquid supplementing tank 8 in a matching way, the alkali liquor tank 6 is communicated with the first spraying device 332 through an alkali liquor conveying pipe 61 arranged between the two, the spraying water tank 7 is communicated with the second spraying device 342 through a spraying water conveying pipe 71 arranged between the two, the liquid supplementing tank 8 is communicated with the third spraying device 352 through a liquid conveying pipe 81 arranged between the two, and the liquid supplementing tank 8 is used for supplementing nutrient solution or water required by the growth and the propagation of microorganisms to the biological filtration section 35;
the alkali liquor delivery pipe 61 is provided with an alkali liquor delivery pump 611, the spray water delivery pipe 71 is provided with a spray water delivery pump 711, and the liquid delivery pipe 81 is provided with a liquid delivery pump 811.
The top of the lye tank 6 is provided with a lye recovery pipe 62 communicated with the bottom of the alkali washing section 33, and the bottom of the lye tank 6 is provided with a lye discharge pipe 63;
a spray water recovery pipe 72 communicated with the bottom of the water washing section 34 is arranged at the top of the spray water tank 7, and a waste water discharge pipe 73 is arranged at the bottom of the spray water tank 7;
the top of the liquid supplementing groove 8 is provided with a liquid recovery pipe 82 communicated with the bottom of the biological filtering section 35, and the bottom of the liquid supplementing groove 8 is provided with a waste liquid discharge pipe 83;
the tail ends of the alkali liquor discharge pipe 63, the waste water discharge pipe 73 and the waste liquid discharge pipe 83 are converged and then led to a factory sewage treatment system for retreatment.
The upper part of the alkaline washing section 33 is provided with a demisting device 333, and the demisting device 333 adopts a wire mesh demister or a baffle demister. The purpose of setting up defogging device 333 is that after the waste gas was handled through the alkali wash, wherein can smuggle the tiny liquid drop of a large amount of alkali lye secretly, aggravated after-treatment system's load and influence the biological purification treatment effect of back system easily, consequently need remove the fog through defogging device 333 defogging and remove the foam, reduce the fog foam and smuggle secretly.
The bottoms of the first spray device 332, the second spray device 342 and the third spray device 352 are all provided with a plurality of spiral nozzles in a matching way.
The lye tank 6, the spray water tank 7 and the liquid supplementing tank 8 are communicated with a tap water pipe 9 which is matched with the system and used for supplementing tap water to each tank, and floating ball type liquid level meters which are contacted with the liquid level are correspondingly arranged in the lye tank 6, the spray water tank 7 and the liquid supplementing tank 8, so that the tap water can be supplemented to each tank according to the liquid level requirement.
Both the first packing layer 331 and the second packing layer 341 are filled with taylor rosette packing.
The exhaust pipe 4 is provided with an automatic detection device 41 for detecting and feeding back whether the composition of the exhaust gas reaches the standard in real time.
The bottom of aiutage 5 is provided with fluid-discharge tube 51 for regularly discharge inside hydrops, prevent that too high liquid level leads to the air current resistance big in aiutage 5.
The biological filter bed 351 of the biological filter section 35 is filled with composite filler containing composite polyurethane filler, ceramsite, bark and volcanic rock, and microorganism composite strains are attached to the composite filler. The microorganism composite strain adopts different types of strains commonly used in the sewage treatment industry, and can enable the biological filter bed 351 to create a proper environment for the growth of microorganisms, such as proper temperature, humidity, pH value conditions and nutrient substances, through effective control. The organic matter in the waste gas can provide nutrient elements such as carbon, nitrogen, phosphorus and partial trace elements required by the growth and reproduction of microorganisms, and when certain nutrient elements are deficient, a proper amount of nutrient elements can be selectively supplied, so that when the waste gas passes through the biological filter bed 351, the malodorous components in the waste gas are subjected to biological oxidation and degradation by the microbial compound strains on the biological filter bed 351, and the deep purification and deodorization effects of the waste gas are achieved.
The utility model discloses a sewage treatment plant waste gas deodorization processing system rationale as follows: in the alkaline washing section 33 of the integrated deodorization device 3, sodium hydroxide solution (with the concentration of 30%) is used as alkaline liquor to spray and wash the waste gas, and H contained in the waste gas is generated in the process that the waste gas passes through the alkaline washing section 33 from bottom to top by utilizing the gas-liquid phase countercurrent mass transfer principle2S、SO2Malodorous acid gases such as methyl mercaptan and the like and alkali liquor generate irreversible chemical reaction to generate new salt substances which fall along with the alkali liquor and are converged at the bottom of the alkali washing section 33, so as to achieve the purpose of preliminary purification and deodorization of waste gas;
in the water washing section 34, the waste gas after alkali washing is washed by raw water, and soluble components in the waste gas and alkali liquor carried in the waste gas are further washed and absorbed, so that the waste gas is subjected to secondary purification treatment;
in the biological filtering section 35, the malodorous organic pollutants in the waste gas are absorbed, metabolized and utilized by the microorganisms based on the principle of a biological deodorization method by utilizing the biochemical action of the microorganisms, and are used as nutrient substances required by the growth and reproduction of the microorganisms, so that the organic pollutants are finally decomposed into harmless substances such as water, carbon dioxide and the like. The process of removing pollutants in waste gas by microorganisms is complex and consists of physical, chemical, physicochemical and biochemical reactions, and the purification process can be divided into three steps: firstly, a malodorous gas dissolving process; adsorption and absorption processes of malodorous substances; ③ the biological degradation process of the malodorous substance. Therefore, the microbial composite strain composed of a plurality of biological strains is cultured and attached in the composite filler of the biological filter bed 351, a suitable environment for the growth of the microorganisms can be created through effective control, organic matters in the waste gas can provide required nutrient elements such as carbon, nitrogen, phosphorus and partial trace elements for the growth and reproduction of the microorganisms, so that the malodorous components in the waste gas are subjected to biological oxidation degradation through the microbial composite strain on the biological filter bed 351 when the waste gas passes through the biological filter bed 351, the waste gas is subjected to deep purification treatment, and sulfuric acid, nitrous acid, spray waste liquid and the like generated in the process are collected at the bottom of the biological filter section 35 and are sent to a sewage treatment system for further treatment.
In the drawings, the positional relationship is described for illustrative purposes only and is not to be construed as limiting the present patent; it is to be understood that the above-described embodiments of the present invention are merely examples provided for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. A sewage treatment plant waste gas deodorization processing system is used for carrying out deodorization processing after collecting waste gas generated by a sewage treatment plant and is characterized by comprising a gas collecting pipe, a suction fan, an integrated deodorization device, an exhaust pipe and an exhaust funnel which are sequentially connected through a pipeline;
the gas collecting pipe is used for collecting waste gas generated by a waste gas source and then conveying the waste gas to the integrated deodorization device for treatment through the suction fan;
the integrated deodorization device is of a box-type structure, the front end of the integrated deodorization device is provided with an air inlet connected with the air collecting pipe, the rear end of the integrated deodorization device is provided with an air outlet connected with the exhaust pipe, an alkaline washing section, a water washing section and a biological filtering section are sequentially arranged in the integrated deodorization device along the air flow direction, a biological filter bed is arranged in the biological filtering section, the top of the alkaline washing section is communicated with the top of the water washing section, and the bottom of the water washing section is communicated with the bottom of the biological filtering section;
and the waste gas conveyed by the gas collecting pipe enters the integrated deodorization device, is sequentially subjected to alkali liquor spraying absorption, water spraying washing and biological filtering degradation treatment, and is conveyed to the exhaust funnel through the exhaust pipe to be discharged.
2. The sewage treatment plant waste gas deodorization treatment system according to claim 1, wherein the alkaline washing section is provided with a first packing layer and a first spraying device at intervals from bottom to top, the water washing section is provided with a second packing layer and a second spraying device at intervals from bottom to top, and a third spraying device is arranged above a biofilter bed of the biofilter section.
3. The sewage treatment plant waste gas deodorization treatment system as set forth in claim 2, wherein a water-retaining weir is provided at a communication position of the bottom of the washing section and the bottom of the biofiltration section for isolating accumulated liquid generated at the bottom of the washing section and the bottom of the biofiltration section.
4. The sewage treatment plant waste gas deodorization treatment system according to claim 3, wherein an alkali liquor tank, a spray water tank and a makeup tank are arranged outside the integrated deodorization device in a matching manner, the alkali liquor tank is communicated with the first spray device through an alkali liquor conveying pipe arranged between the alkali liquor tank and the first spray device, the spray water tank is communicated with the second spray device through a spray water conveying pipe arranged between the spray water tank and the second spray device, and the makeup tank is communicated with the third spray device through a liquid conveying pipe arranged between the spray water tank and the third spray device;
the alkali liquor conveying pipe is provided with an alkali liquor conveying pump, the spray water conveying pipe is provided with a spray water conveying pump, and the liquid conveying pipe is provided with a liquid conveying pump.
5. The sewage treatment plant waste gas deodorization processing system as set forth in claim 4, wherein a lye recovery pipe communicated with the bottom of the alkali washing section is arranged at the top of the lye tank, and a lye discharge pipe is arranged at the bottom of the lye tank;
a spray water recovery pipe communicated with the bottom of the washing section is arranged at the top of the spray water tank, and a waste water discharge pipe is arranged at the bottom of the spray water tank;
a liquid recovery pipe communicated with the bottom of the biological filtering section is arranged at the top of the liquid supplementing tank, and a waste liquid discharge pipe is arranged at the bottom of the liquid supplementing tank;
and the tail ends of the alkali liquor discharge pipe, the waste water discharge pipe and the waste liquid discharge pipe are converged and then led to a factory sewage treatment system.
6. The sewage treatment plant waste gas deodorization treatment system according to claim 5, wherein a plurality of spiral nozzles are arranged at the bottoms of the first spray device, the second spray device and the third spray device in a matched manner.
7. The sewage treatment plant waste gas deodorization treatment system as set forth in claim 6, wherein a demister is disposed at an upper portion of the alkaline washing section, and the demister is a wire mesh demister or a baffle demister.
8. The sewage treatment plant waste gas deodorization treatment system as recited in claim 7, wherein the lye tank, the spray tank and the replenishment tank are communicated with tap water pipes provided in association with the system for replenishing tap water in each tank, and a floating ball type level meter is provided in each of the lye tank, the spray tank and the replenishment tank.
9. The sewage treatment plant exhaust gas deodorization treatment system according to claim 8, wherein the first filler layer and the second filler layer are filled with Taylor rosette filler.
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| CN202023050377.8U CN214598111U (en) | 2020-12-17 | 2020-12-17 | Sewage treatment plant waste gas deodorization processing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116395843A (en) * | 2023-03-14 | 2023-07-07 | 青岛中舟环保技术工程有限公司 | A high-efficiency wastewater and waste gas biochemical purification device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116395843A (en) * | 2023-03-14 | 2023-07-07 | 青岛中舟环保技术工程有限公司 | A high-efficiency wastewater and waste gas biochemical purification device |
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