Waste gas collecting and treating device for wastewater treatment

Abstract

The utility model discloses a waste gas collection and treatment device for wastewater treatment, which comprises a waste gas collection system, a pretreatment system, an induced draft fan, a biological filter deodorization device, a circulating pump and an automatic control system. The odor enters a biological filter deodorization device after being subjected to temperature regulation, dust removal and humidification, the pretreatment system is an alkali-washing chemical washing tower, and the odor enters from the bottom of the alkali-washing chemical washing tower, is discharged from the top of the alkali-washing chemical washing tower and then enters the bottom of the biological filter deodorization device; the biological filter deodorization device comprises a first filter and a second filter. According to the utility model, pollutants are decomposed and converted into harmless substances by utilizing the biochemical action of microorganisms, so that the living quality of nearby residents is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas collection and treatment, in particular to a waste gas collection and treatment device for wastewater treatment. Background Art

[0002] At present, the public is most concerned about the possibility of odor leakage and harm to the health of the surrounding people in the wastewater facilities that have been built and new facilities are being constructed. Therefore, odor control has become one of the main considerations in the design and operation of wastewater collection, treatment and disposal facilities. In order to protect the health of operation and maintenance personnel and avoid affecting the living environment of the surrounding people and improve the quality of life of nearby residents, it is necessary to cover and collect domestic sewage treatment pools and chemical sewage treatment pools, deodorize the waste gas with biological filter deodorization devices that treat the symptoms and root causes, and centrally treat the odor generated by the sewage station. Some sewage treatment stations will produce odorous gases such as methane, ammonia, hydrogen sulfide, etc., which affect the lives and production of surrounding residents. Utility Model Content

[0003] The purpose of the utility model is to provide a method to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waste gas collection and treatment device for wastewater treatment, comprising a waste gas collection system, a pretreatment system, an induced draft fan, a biofilter deodorization device, a circulation pump and an automatic control system. After the odor gas is discharged from the waste gas collection system, it is introduced into the induced draft fan through an induced draft pipe, and first enters the pretreatment system after being transported by the induced draft fan. After temperature adjustment, dust removal and humidification, the odor enters the biofilter deodorization device. The pretreatment system is an alkali washing chemical washing tower. The odor enters from the bottom of the alkali washing chemical washing tower and enters the bottom of the biofilter deodorization device after being discharged from the top of the alkali washing chemical washing tower. The biofilter deodorization device comprises a first filter tank and a second filter tank, which are separated by a partition. The first filter tank and the second filter tank are connected to an air intake pipe. The alkali washing chemical washing tower, the first filter tank and the second filter tank are filled with fillers. The tops of the first filter tank and the second filter tank are connected to a discharge pipe, and the other end of the discharge pipe is connected to a fan, and the discharge port of the fan is connected to a discharge chimney.

[0005] Preferably, the end of the fan is also connected to a return pipe, the return pipe is connected to a sensor and a valve, and the end of the return pipe is connected to the air inlet end of the biofilter deodorization device.

[0006] Preferably, a washing nozzle is installed above the inner cavity of the first filter tank and the second filter tank, and the washing nozzle is connected to a circulation pump.

[0007] Preferably, a humidifying nozzle is installed in the alkaline chemical washing tower, and the humidifying nozzle is connected to a circulation pump.

[0008] Preferably, the automatic control system is respectively connected to the circulation pump, the pretreatment system, the induced draft fan, the blower, the sensing element in the biofilter deodorization device and the control valve signal.

[0009] Preferably, the alkaline chemical washing tower adopts a single-stage countercurrent washing tower, and its filler adopts ball ring filler and Taylor ring filler made of plastic.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The utility model utilizes the biochemical action of microorganisms to decompose pollutants and convert them into harmless substances. Microorganisms use organic matter as the substrate required for their growth and reproduction, and through different transformation pathways, they oxidize and decompose macromolecules or complex organic matter into simple inorganic substances such as water and carbon dioxide through alienation, thereby effectively removing the odor generated by sewage stations and improving the quality of life of nearby residents.

[0012] 2. The two filters of the utility model can be used alternately, which is convenient for ensuring that the equipment can still operate normally when the filler is replaced. The two filters can also be used at the same time to improve work efficiency. In addition, a return pipe is provided. When the equipment detects that the gas does not meet the emission standards, the gas can be controlled to re-enter the biological filter deodorization device, thereby improving the emission quality of the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 It is a schematic diagram of the working process of the utility model.

[0015] In the figure: 1. Waste gas collection system; 2. induced draft fan; 3. Biofilter deodorization device; 4. Alkaline chemical washing tower; 5. First filter; 6. Second filter; 7. Air intake pipe; 8. Discharge pipe; 9. Fan; 10. Chimney; 11. Return pipe; 12. Washing nozzle; 13. Circulation pump; 14. Humidification nozzle; 15. Automatic control system. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-2The utility model provides a technical solution for a waste gas collection and treatment device for wastewater treatment: it includes a waste gas collection system 1, a pretreatment system, an induced draft fan 2, a biofilter deodorization device 3, a circulating pump 13 and an automatic control system 15. After the odor gas is discharged from the waste gas collection system 1, it is introduced into the induced draft fan 2 through an induced draft pipe, and is first transported into the pretreatment system by the induced draft fan 2. After temperature adjustment, dust removal and humidification, the odor gas enters the biofilter deodorization device 3. The pretreatment system is an alkali washing chemical washing tower 4. The odor gas is discharged from the bottom of the alkali washing chemical washing tower 4. After entering and being discharged from the top of the alkaline chemical washing tower 4, it enters the bottom of the biological filter deodorization device 3. The biological filter deodorization device 3 includes a first filter 5 and a second filter 6. The two filters are separated by a partition. The first filter 5 and the second filter 6 are connected to an air intake pipe 7. The alkaline chemical washing tower 4, the first filter 5 and the second filter 6 are filled with fillers. The tops of the first filter 5 and the second filter 6 are connected to a discharge pipe 8. The other end of the discharge pipe 8 is connected to a fan 9. The discharge port of the fan 9 is connected to a discharge chimney 10.

[0018] The end of the fan 9 is also connected to a return pipe 11 , to which a sensor and a valve are connected. The end of the return pipe 11 is connected to the air inlet end of the biofilter deodorization device 3 .

[0019] A washing nozzle 12 is installed above the inner cavity of the first filter tank 5 and the second filter tank 6, and the washing nozzle 12 is connected to the circulation pump 13; a humidifying nozzle 14 is installed in the alkaline chemical washing tower 4, and the humidifying nozzle 14 is connected to the circulation pump 13. The function of the circulation pump 13 is to pressurize the circulating water and spray it onto the surface of the packing layer to maintain sufficient flow and lift.

[0020] The automatic control system 15 is respectively connected to the circulating pump 13, the pretreatment system, the induced draft fan 2, the fan 9, the sensing elements in the biofilter deodorization device 3 and the control valve signal.

[0021] The alkali washing chemical washing tower 4 adopts a single-stage countercurrent washing tower, and its filler adopts ball ring filler and Taylor ring filler made of plastic.

[0022] The fillers in the first filter tank 5 and the second filter tank 6 are composite biological fillers, which have high mechanical strength, do not deform under pressure, are not affected by humidity changes, and also have large specific surface area, high porosity, light weight, resistance to biodegradation, low wind resistance, low energy consumption, and can be used for a long time.

[0023] Working principle: After being discharged from the exhaust gas collection system 1, the malodorous gas is introduced into the induced draft fan 2 through the induced draft duct, and then transported by the induced draft fan 2 to the pretreatment system. After temperature adjustment, dust removal and humidification, it enters the biological filter deodorization device 3 for biological deodorization. The pollutants in the malodorous gas come into contact with microorganisms, are captured, degraded and oxidized by the microorganisms, and the pollutants are decomposed into harmless CO2 and H2O as well as inorganic substances such as sulfuric acid and nitric acid. The sulfuric acid, nitric acid, etc. are further decomposed into harmless substances by thiobacillus and nitrate bacteria.

[0024] The utility model utilizes the biochemical action of microorganisms to decompose pollutants and convert them into harmless substances. Microorganisms use organic matter as the substrate required for their growth and reproduction, and through different transformation pathways, they oxidize and decompose macromolecules or complex organic matter into simple inorganic substances such as water and carbon dioxide through dissimilation. At the same time, through assimilation and utilizing the energy generated in the process of dissimilation, the organisms of microorganisms grow and reproduce, creating favorable conditions for further exerting their ability to process organic matter.

[0025] At the same time, the present application is provided with two filter tanks, which can be used alternately, so as to ensure the normal operation of the equipment when the filler is replaced, and the two filter tanks can be used at the same time to improve the working efficiency. In addition, a return pipe 11 is provided. When the equipment detects that the gas does not meet the emission standard, the gas can be controlled to re-enter the biological filter deodorization device 3, thereby improving the quality of the exhaust gas.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste gas collection and treatment device for wastewater treatment, comprising a waste gas collection system (1), a pretreatment system, an induced draft fan (2), a biofilter deodorization device (3), a circulation pump (13) and an automatic control system (15), wherein the odorous gas is discharged from the waste gas collection system (1) and introduced into the induced draft fan (2) through an induced draft pipe, and then transported by the induced draft fan (2) to the pretreatment system first, and then the odorous gas enters the biofilter deodorization device (3) after temperature adjustment, dust removal and humidification, and is characterized in that: The pretreatment system is an alkali-washing chemical washing tower (4), wherein the odor enters from the bottom of the alkali-washing chemical washing tower (4), is discharged from the top of the alkali-washing chemical washing tower (4), and then enters the bottom of the biofilter deodorization device (3), wherein the biofilter deodorization device (3) comprises a first filter (5) and a second filter (6), wherein the two filter tanks are separated by a partition, wherein the first filter (5) and the second filter (6) are connected to an air intake pipe (7), wherein the alkali-washing chemical washing tower (4), the first filter (5) and the second filter (6) are filled with fillers, wherein the tops of the first filter (5) and the second filter (6) are connected to an exhaust pipe (8), wherein the other ends of the exhaust pipe (8) are connected to a fan (9), and the exhaust port of the fan (9) is connected to an exhaust chimney (10).

2. A wastewater treatment waste gas collection and treatment device according to claim 1, characterized in that: The end of the fan (9) is also connected to a return pipe (11), and a sensor and a valve are connected to the return pipe (11). The end of the return pipe (11) is connected to the air inlet end of the biofilter deodorization device (3).

3. A wastewater treatment waste gas collection and treatment device according to claim 1, characterized in that: A washing nozzle (12) is installed above the inner cavity of the first filter tank (5) and the second filter tank (6), and the washing nozzle (12) is connected to a circulation pump (13).

4. A wastewater treatment waste gas collection and treatment device according to claim 1, characterized in that: A humidifying nozzle (14) is installed in the alkaline chemical washing tower (4), and the humidifying nozzle (14) is connected to a circulation pump (13).

5. The wastewater treatment waste gas collection and treatment device according to claim 1, characterized in that: The automatic control system (15) is respectively connected to the circulation pump (13), the pretreatment system, the induced draft fan (2), the fan (9), the sensing elements in the biofilter deodorization device (3) and the control valve signal.

6. The wastewater treatment waste gas collection and treatment device according to claim 1, characterized in that: The alkaline chemical washing tower (4) is a single-stage countercurrent washing tower, and its fillers are ball ring fillers and Taylor ring fillers made of plastic.

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