Biological deodorization equipment for sewage plant

Abstract

According to the biological deodorization equipment for the sewage plant, firstly, a biological deodorization agent is added into the biological deodorization agent bin to react with malodorous gas of sewage in the biological tank, so that the malodorous gas in the sewage is preliminarily decomposed and purified, and the sewage treatment efficiency is improved; the sewage subjected to primary decomposition and purification reaches the clean water tank through the biological tank, the biological deodorization bin arranged above the clean water tank further enhances the decomposition capacity of odor, and the upper biological filler layer and the lower biological filler layer provide rich growth carriers for microorganisms; multi-layer filtration and degradation of gas in the clean water tank are realized through vertical distribution, and further decomposition and purification of odor in sewage are realized; the arrangement of the hollow layer in the biological deodorization bin not only optimizes the distribution of airflow, but also introduces fresh air through the air inlet and the filter screen on the side edge, provides sufficient oxygen for metabolism of microorganisms, and improves the activity and deodorization efficiency of the microorganisms.

Description

Technical Field

[0001] This utility model relates to the field of wastewater deodorization technology, specifically a biological deodorization device for wastewater treatment plants. Background Technology

[0002] The malodorous gases produced during wastewater treatment not only pollute the surrounding environment but also adversely affect human health and quality of life. The main components of these gases include hydrogen sulfide, ammonia, methanethiol, and volatile organic compounds. These components have pungent odors and, if not effectively treated, can cause serious harm to nearby residents, factory workers, and the ecological environment. Therefore, the purification and treatment of malodorous gases in wastewater treatment plants has become an urgent problem to be solved.

[0003] Traditional deodorization methods mainly include physical, chemical, and biological methods. Among them, physical methods, such as adsorption and condensation, can effectively reduce odor concentration, but they have limited treatment efficiency and high operating costs. Chemical methods degrade odor components through chemical reactions, but they often require the addition of large amounts of chemical reagents, which may cause secondary pollution to the environment, and their operating costs are also high.

[0004] In contrast, biological methods, due to their advantages such as environmental friendliness, low cost, and high efficiency, are gradually becoming an important means of odor purification in wastewater treatment plants. Biological methods primarily rely on the metabolic processes of microorganisms to decompose pollutants in odorous gases into harmless substances. However, current biological deodorization equipment still faces some challenges in practical applications. For example, single-method microbial purification is not efficient in certain situations (such as at very low temperatures), making it difficult to adapt to diverse deodorization needs. Therefore, optimizing the structure of biological deodorization equipment, improving deodorization effects, and achieving efficient and flexible odor purification are key research directions within the industry. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a biological deodorization device for sewage treatment plants, which solves the problem of low deodorization efficiency in some traditional biological deodorization devices for sewage treatment plants.

[0006] A biological deodorization device for a wastewater treatment plant includes a biological tank, a clear water tank, a biological deodorizing agent tank, and a biological deodorization chamber. The biological deodorizing agent tank is located above the biological tank and connected to the biological tank via an inlet pipe. A first solenoid valve is installed at the inlet pipe. The clear water tank is connected to the side of the biological tank. The biological deodorization chamber is located above the clear water tank and connected to it. An air outlet is provided at the top of the biological deodorization chamber. The biological deodorization chamber contains, from top to bottom, an upper biological packing layer, a hollow layer, and a lower biological packing layer. An air inlet and a filter screen are provided on the side of the hollow layer. A fan is installed at the air outlet.

[0007] Furthermore, the biological pool includes a biological pool body and multiple microporous baffles. An inlet is provided at the bottom of one side of the biological pool body, and an outlet is provided at the upper middle part of the opposite side of the biological pool body. Multiple mounting positions are provided on the inner side of the biological pool body from top to bottom, and the microporous baffles are respectively installed at the mounting positions. A biofilm is attached to the microporous baffles.

[0008] Furthermore, a handle is provided on the microporous partition.

[0009] Furthermore, a second solenoid valve is provided on the water inlet, and a third solenoid valve is provided on the water outlet.

[0010] Furthermore, a PLC processor is installed above the biological pool, and a sensor is installed at the air outlet. The PLC processor is connected to the sensor, the first solenoid valve, the second solenoid valve, and the third solenoid valve.

[0011] Preferably, the upper biological filler layer is filled with microbial soil filler with a thickness of 1 meter, and the lower biological filler layer is filled with microbial soil filler with a thickness of 1.5 meters.

[0012] Preferably, the air outlet at the top of the biological deodorization chamber is connected to a deodorization pool via a pipe.

[0013] Preferably, an aeration device is provided at the bottom of the inner side of the biological pool.

[0014] Preferably, the biological deodorization chamber is provided with an opening and closing door on its side.

[0015] Preferably, a flow booster is provided at the bottom corner of the inner side of the biological pool.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This invention provides a biological deodorization device for a wastewater treatment plant. First, the biological deodorizing agent chamber reacts with odorous gases from the wastewater in the biological tank by adding biological deodorizing agents, thus initially decomposing and purifying the odor and improving wastewater treatment efficiency. The pre-decomposed and purified wastewater then flows through the biological tank to the clear water tank. The biological deodorization chamber above the clear water tank further enhances the decomposition of odors. The upper and lower biological packing layers provide abundant growth carriers for microorganisms, and their vertical distribution achieves multi-layered filtration and degradation of gases within the clear water tank, further decomposing and purifying the odor in the wastewater. The hollow layer within the biological deodorization chamber not only optimizes airflow distribution but also introduces fresh air through side inlets and filters, providing ample oxygen for microbial metabolism and enhancing microbial activity and deodorization efficiency. Furthermore, a blower at the outlet guides the airflow upwards, allowing gases from the clear water tank to flow upwards into the biological deodorization chamber, ensuring the continuity and thoroughness of the deodorization process and improving deodorization efficiency. Therefore, the biological deodorization equipment in this wastewater treatment plant can not only significantly reduce odor emissions in wastewater treatment, but also has the advantages of stable operation, high efficiency, environmental protection and economy, and is suitable for wastewater treatment scenarios with a variety of malodorous gas components. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the biological deodorization equipment for sewage treatment plants according to the present invention;

[0019] in:

[0020] 10-Biological tank, 20-Clear water tank, 30-Biological deodorizing agent chamber, 40-Biological deodorizing chamber, 50-Inlet pipe, 60-PLC processor, 11-First solenoid valve, 12-Microporous baffle, 13-Inlet, 14-Outlet, 15-Second solenoid valve, 16-Third solenoid valve, 17-Aeration device, 18-Flow promoter, 41-Air outlet, 42-Upper biological packing layer, 43-Hollow layer, 44-Lower biological packing layer, 45-Fan, 46-Sensor. Detailed Implementation

[0021] The embodiments described below are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0022] See Figure 1This embodiment provides a biological deodorization device for a wastewater treatment plant, which includes a biological tank 10, a clear water tank 20, a biological deodorizing agent tank 30, and a biological deodorization chamber 40. The biological deodorizing agent tank 30 is located above the biological tank 10 and is connected to the biological tank 10 through an inlet pipe 50. A first solenoid valve 11 is installed at the inlet pipe 50. The clear water tank 20 is connected to the side of the biological tank 10. The biological deodorization chamber 40 is located above the clear water tank 20 and is connected to the biological deodorization chamber 40. An air outlet 41 is provided at the top of the biological deodorization chamber 40. An upper biological packing layer 42, a hollow layer 43, and a lower biological packing layer 44 are arranged sequentially from top to bottom inside the biological deodorization chamber 40. An air inlet and a filter screen are provided on the side of the hollow layer 43. A blower 45 is installed on the air outlet 41.

[0023] Furthermore, the biological tank 10 includes a main body and multiple microporous baffles 12. An inlet 13 is located at the bottom of one side of the main body, and an outlet 14 is located at the upper middle part of the opposite side. Multiple mounting positions are arranged from top to bottom on the inner side of the main body, and the microporous baffles 12 are respectively mounted at these mounting positions. A biofilm is attached to the microporous baffles 12. The combined design of the main body of the biological tank 10 and the microporous baffles 12 effectively increases the surface area and active zone for biodegradation. The microporous baffles 12 create multiple tiny spaces inside the biological tank 10, and combined with the attached biofilm, provide more attachment area, which is conducive to the growth and reproduction of microorganisms, thereby achieving a faster and more efficient degradation rate of odors and some organic matter in the wastewater. Water then flows from the bottom of the biological tank 10 upwards through multiple layers of microporous baffles 12 to the outlet 14 of the biological tank 10, and then to the clear water tank 20.

[0024] Preferably, the mounting position includes a mounting plate disposed on the inner side of the biological pool 10 body and a slot disposed on the mounting plate. The microporous partition 12 is provided with a corresponding buckle. During installation, the buckle engages with the slot, thereby installing the microporous partition 12 into the mounting position. Furthermore, the biological pool 10 body is a frustum-shaped structure with a cross-sectional area decreasing from top to bottom. The diameter of the microporous partition 12 gradually decreases from top to bottom; that is, the microporous partition 12 with the largest diameter is installed in the uppermost mounting position of the biological pool 10 body, and the microporous partition 12 with the smallest diameter is installed in the lowermost mounting position of the biological pool 10 body. Furthermore, the microporous partition 12 is provided with a handle, which facilitates the disassembly and removal of the microporous partition 12 for periodic cleaning and maintenance.

[0025] Furthermore, a second solenoid valve 15 is installed on the inlet 13, and a third solenoid valve 16 is installed on the outlet 14. Furthermore, a PLC processor 60 is installed above the biological tank 10, and a sensor 46 is installed at the air outlet 41. The PLC processor 60 is connected to the sensor 46, the first solenoid valve 11, the second solenoid valve 15, and the third solenoid valve 16. It should be noted that the sensor 46 in this application is an MQ-135 air quality sensor 46, which can monitor the gas discharged from the air outlet 41. When biological activity is high or there is little odor in the wastewater, meaning the upper biological packing layer 42 and lower biological packing layer 44 in the biological deodorization chamber 40 can treat the odor in the wastewater to the point that the treated odor meets the acceptable standard, the PLC processor 60 controls the first solenoid valve 11 to close based on the signal from the MQ-135 air quality sensor 46. The agent in the biological deodorizing agent chamber 30 does not need to be added to the biological tank 10, which not only reduces the consumption of biological deodorizing agents but also reduces the cost of using related agents, making it more economical. When biological activity is low or there is a lot of odor in the wastewater, meaning the upper biological packing layer 42 and lower biological packing layer 44 in the biological deodorization chamber 40 cannot completely treat the odor in the wastewater, the PLC processor 60 controls the first solenoid valve 11 to open based on the signal from the MQ-135 air quality sensor 46. The biological deodorizing agent reacts with the wastewater, working in conjunction with the biological deodorization chamber 40 to deodorize the wastewater, ensuring that the emitted odor meets the standard. Therefore, the biological deodorization equipment in this wastewater treatment plant achieves appropriate regulation of the biological deodorization process, optimizes the odor treatment effect in the biological tank 10, and effectively reduces operating costs. Simultaneously, the PLC processor 60 can also control the opening and closing of the second solenoid valve 15 and the third solenoid valve 16. During the biological deodorization agent reaction process, the third solenoid valve 16 is closed, allowing the biological deodorization agent to fully react with the wastewater in the biological tank 10 before entering the clear water tank 20. It should be noted that the control of the solenoid valves by the PLC processor 60 is a simple control technique in the art and will not be elaborated upon here.

[0026] Preferably, the upper biological packing layer 42 is filled with microbial soil packing material with a thickness of 1 meter, and the lower biological packing layer 44 is filled with microbial soil packing material with a thickness of 1.5 meters. Firstly, the 1-meter thickness of the microbial soil packing material in the upper biological packing layer 42 and the 1.5-meter thickness in the lower biological packing layer 44 allow for efficient use of space and provide sufficient biological activity area. The lower microbial soil packing material effectively degrades odorous gases drawn into the biological deodorization chamber 40, while the upper packing layer further increases the efficiency and capacity of biodegradation, and also degrades and decomposes residual odorous gases in the clear water tank 20. Secondly, the slightly larger thickness of the lower biological packing layer 44 helps prevent gas infiltration into the hollow layer 43. The increased thickness of the packing layer reduces the channels for gas infiltration, effectively preventing cross-layer diffusion of gas and maintaining the stability of the gas treatment system.

[0027] Preferably, the air outlet 41 at the top of the biological deodorization chamber 40 is connected to a deodorization tank via a pipe. The deodorization tank is filled with a sodium carbonate solution with a concentration of 2%-3%. The gas treated by the biological deodorization chamber 40 can be deodorized again through the deodorization tank, resulting in cleaner exhaust gas. It should be noted that the pipe is equipped with an air outlet branch and a fan. When deodorization is not required again, the air outlet branch is opened, and the gas is discharged through the air outlet branch. When deodorization is required again, the air outlet branch is closed, and the fan is turned on to draw the gas through the pipe to the deodorization tank.

[0028] Preferably, an aeration device 17 is provided at the bottom inner side of the biological tank 10. This aeration device 17 provides oxygen to the biological tank 10 and the clear water tank 20, thereby enhancing the activity of microorganisms in the microporous baffle 12 and the biological deodorizing agent chamber, thus improving biodegradation efficiency. By providing sufficient oxygen, the aeration device 17 promotes the respiration of microorganisms, enhancing their ability to degrade organic matter and odors in wastewater. This accelerates the removal of odors from wastewater, effectively reducing malodor emissions during wastewater treatment and further improving treatment efficiency. Furthermore, the aeration device 17 also helps to circulate the water in the biological tank 10, preventing stagnation and ensuring sufficient contact between wastewater and microorganisms, thereby enhancing the wastewater treatment effect.

[0029] Preferably, the biological deodorization chamber 40 is provided with an opening and closing door on its side. This door design facilitates the cleaning, maintenance, and repair of the biological deodorization chamber 40 by operators when needed. The opening and closing door allows easy access to the interior of the biological deodorization chamber 40 to check the condition of the packing layer, remove debris, and perform necessary maintenance to ensure the long-term stable operation of the system.

[0030] Preferably, a flow booster 18 is provided at the bottom corner of the inner side of the biological tank 10. The flow booster 18 not only increases the kinetic energy of the water flow but also reduces stagnant water zones, ensuring that the microorganisms in the biological tank 10 are evenly distributed and achieve optimal degradation. At the same time, the flow booster 18 also enhances oxygen exchange in the water flow, helping to maintain the biological activity of microorganisms and thus accelerating the degradation process of odors and organic matter in wastewater.

[0031] This invention provides a biological deodorization device for a wastewater treatment plant. Firstly, the biological deodorizing agent chamber 30 reacts with the odorous gases in the wastewater of the biological tank 10 by adding biological deodorizing agents, thus initially decomposing and purifying the odor and improving wastewater treatment efficiency. The preliminarily decomposed and purified wastewater then flows through the biological tank 10 to the clear water tank 20. The biological deodorization chamber 40 located above the clear water tank 20 further enhances the decomposition of odors. The upper biological packing layer 42 and the lower biological packing layer 44 provide abundant growth carriers for microorganisms, and their vertical distribution achieves multi-layer filtration and degradation of gases within the clear water tank 20, thereby further decomposing and purifying the odor in the wastewater. Furthermore, the hollow layer 43 within the biological deodorization chamber 40 not only optimizes airflow distribution but also introduces fresh air through side air inlets and filters, providing sufficient oxygen for microbial metabolism and enhancing microbial activity and deodorization efficiency. Furthermore, the blower 45 on the air outlet 41 guides the airflow upwards, allowing the gas in the clear water tank 20 to flow upwards into the biological deodorization chamber 40, ensuring the continuity and thoroughness of the deodorization process and improving deodorization efficiency. Therefore, this biological deodorization equipment for wastewater treatment not only significantly reduces odor emissions in wastewater treatment but also boasts advantages such as stable operation, high treatment efficiency, and environmental friendliness and economy, making it suitable for wastewater treatment scenarios with various odorous gas components.

[0032] The above-disclosed embodiments are merely some preferred embodiments of the present utility model, and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the present utility model patent application shall still fall within the scope of the present utility model.

Claims

1. A biological deodorization plant for sewage plants, characterized in that: It comprises a biological pool, a clean water pool, a biological deodorization agent warehouse and a biological deodorization warehouse, the biological deodorization agent warehouse is arranged above the biological pool and communicates with the biological pool through a medicine inlet pipe, a first electromagnetic valve is arranged at the medicine inlet pipe, the side of the biological pool is connected with the clean water pool, the top of the clean water pool is provided with the biological deodorization warehouse and communicates with the biological deodorization warehouse, the top of the biological deodorization warehouse is provided with an air outlet, an upper biological filler layer, a hollow layer and a lower biological filler layer are arranged in the biological deodorization warehouse from top to bottom, the side of the hollow layer is provided with an air inlet and a filter screen, and a fan is arranged on the air outlet.

2. The sewage plant biological deodorization apparatus according to claim 1, wherein The biological pool comprises a biological pool body and a plurality of microporous partitions, a water inlet is arranged at the bottom of one side of the biological pool body, a water outlet is arranged at the middle and upper part of the other side of the biological pool body, a plurality of mounting positions are arranged on the inner side of the biological pool body from top to bottom, the microporous partitions are arranged on the mounting positions respectively, and biological membranes are attached to the microporous partitions.

3. The sewage plant biological deodorization apparatus according to claim 2, wherein A handle is arranged on the microporous partition.

4. The sewage plant biological deodorization apparatus according to claim 2, wherein A second electromagnetic valve is arranged on the water inlet, and a third electromagnetic valve is arranged on the water outlet.

5. The sewage plant biological deodorization apparatus as claimed in claim 4, wherein A PLC processor is arranged above the biological pool, a sensor is arranged at the air outlet, and the PLC processor is connected with the sensor, the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve.

6. The sewage plant biological deodorization apparatus as claimed in claim 1, wherein The upper biological filler layer is filled with microbial soil filler, and the thickness is 1m, and the lower biological filler layer is filled with microbial soil filler, and the thickness is 1.5m.

7. The sewage plant biological deodorization apparatus according to claim 1, wherein The air outlet arranged at the top of the biological deodorization warehouse communicates with a deodorization pool through a pipeline.

8. The sewage plant biological deodorization apparatus as claimed in claim 1, wherein An aeration device is arranged at the bottom of the inner side of the biological pool.

9. The sewage plant biological deodorization apparatus according to claim 1, wherein An opening and closing door is arranged at the side of the biological deodorization warehouse.

10. The biological deodorization facility for sewage plants as claimed in claim 1, characterized in that, A flow pusher is arranged at the corner of the bottom of the inner side of the biological pool.

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