Efficient wastewater denitrification device based on carbon source

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to an efficient wastewater denitrification device based on a carbon source, which comprises a treatment pond and a treatment unit, the treatment unit comprises a guide rail frame, a filter screen plate, a scraper blade, a wedging plate, a vertical rod frame, two partition plates, two connecting pipes, a feeding assembly and an aeration assembly, wastewater is discharged into the treatment pond, passes through the filter screen plate and then is discharged into the treatment pond through the scraper blade. Suspended solid particles are intercepted to one side of the filter screen plate, wastewater enters the space between the two partition plates through the connecting pipe, a liquid composite carbon source is added in cooperation with the adding assembly, nitrate is reduced into nitrogen, then the nitrogen flows into a cavity formed by the rightmost partition plate and the treatment pond, oxygen is provided through the aeration assembly, and then the nitrogen is discharged for precipitation; during cleaning, the vertical rod frame is held, the filter screen plate is driven to slide in the guide rail frame, and the scraper is driven to drive the impurities to integrally move upwards, so that the impurities in the treatment tank are cleaned in such a manner, and the influence on the subsequent nitrogen removal and removal efficiency and quality is avoided.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a high-efficiency denitrification device for wastewater based on a carbon source. Background Technology

[0002] With rapid industrial development, the types and quantities of wastewater have increased dramatically, especially high-concentration carbon and nitrogen wastewater, which is difficult to treat and hard to remove nitrogen and carbon at a deep level. In the current nitrogen and carbon removal process, only a portion of organic carbon can be removed during the anaerobic process to ensure the organic carbon source required for the subsequent biological denitrification process, resulting in a low energy conversion rate of organic carbon source.

[0003] The prior art patent application with authorization publication number CN 110255708 A discloses a method and device for ultra-deep denitrification and carbon removal treatment of high carbon and nitrogen wastewater. After carbon removal by high-efficiency anaerobic aeration, deep denitrification and carbon removal are achieved through nitrification treatment and ABR anaerobic ammonia oxidation and denitrification to achieve ultra-low concentration wastewater that meets the conditions. High-efficiency anaerobic carbon removal is achieved at the front end, and most of the organic carbon source is removed. In the process of denitrification and carbon removal, except for a small amount of aeration required for nitrification, anaerobic denitrification and carbon removal are achieved throughout the process, providing energy for the wastewater treatment process. The entire process can greatly reduce energy consumption.

[0004] However, in the aforementioned existing technologies, a large amount of sediment is generated in the pretreatment tank during the wastewater treatment process, which is detrimental to the work of staff and affects the efficiency and quality of subsequent denitrification. Utility Model Content

[0005] The purpose of this invention is to provide a carbon source-based high-efficiency denitrification device for wastewater, which aims to solve the problem that in the existing technology, a large amount of precipitate is generated in the pretreatment tank during the wastewater treatment process, which is not conducive to the work of the staff and affects the efficiency and quality of subsequent denitrification.

[0006] To achieve the above objectives, this utility model provides a high-efficiency nitrogen removal device for wastewater based on a carbon source, comprising a treatment tank and a treatment unit. The treatment unit includes a guide rail frame, a filter screen, a scraper, a clamping plate, a vertical support frame, two partitions, two connecting pipes, a dosing assembly, and an aeration assembly. The treatment unit is connected to the treatment tank. The guide rail frame is fixedly connected to the treatment tank and located on the inner wall of the treatment tank. The filter screen is slidably connected to the guide rail frame and located on the inner wall of the guide rail frame. The clamping plate is fixedly connected to the filter screen and located on the inner wall of the filter screen. Below, the fitting plate is adapted to the treatment tank, the scraper is fixedly connected to the filter screen plate and located on one side of the filter screen plate, and the scraper is slidably engaged with the treatment tank, the vertical rod frame is fixedly connected to the filter screen plate and located above the filter screen plate, both partitions are fixedly connected to the treatment tank and located on the inner side wall of the treatment tank respectively, two connecting pipes are respectively connected to the corresponding partitions and located on one side of the partitions, the dosing component is located above the treatment tank, and the aeration component is located on the inner side wall of the treatment tank.

[0007] The dosing assembly includes a storage tank, a mounting frame, a dispensing pipe, and a solenoid valve. The mounting frame is fixedly connected to the treatment pool and located above the treatment pool. The storage tank is detachably connected to the mounting frame and located above the mounting frame. The dispensing pipe is connected to the storage tank and located at the bottom of the storage tank. The solenoid valve is connected to the dispensing pipe and located in the middle of the dispensing pipe.

[0008] The dosing assembly further includes a stirring frame and a connecting frame. The stirring frame is disposed above the mounting frame, and the connecting frame is fixedly connected to the stirring frame and located above the stirring frame.

[0009] The aeration assembly includes an aerator, an air distribution pipe, and a nozzle. The aerator is detachably connected to the treatment tank and is located on the outer wall of the treatment tank. The air distribution pipe is connected to the aerator and is located at the output end of the aerator. The nozzle is connected to the air distribution pipe and is located on the outer wall of the air distribution pipe.

[0010] The aeration assembly further includes a support frame, which is fixedly connected to the treatment tank and located on the inner bottom wall of the treatment tank. The support frame is detachable from the air distribution pipe.

[0011] This utility model discloses a high-efficiency denitrification device for wastewater based on a carbon source. During use, wastewater is discharged into the treatment tank. After passing through the filter screen, suspended solid particles in the wastewater are trapped on one side of the filter screen. The wastewater then enters the space between two partitions through the connecting pipe. A liquid composite carbon source is added using the dosing component. Under anoxic or anaerobic conditions, denitrifying microorganisms use the composite carbon source as an electron donor to reduce nitrates to nitrogen gas. The nitrogen then flows into the chamber formed by the rightmost partition and the treatment tank, where oxygen is provided by the aeration component. Afterward, the nitrogen is discharged for sedimentation. Cleaning is simple: hold the vertical rod frame, which slides the filter screen within the guide rail frame, causing the scraper to move the impurities upwards. This method cleans the impurities in the treatment tank, preventing any impact on the efficiency and quality of subsequent denitrification. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a schematic diagram of the structure of the carbon source-based high-efficiency denitrification device for wastewater according to this utility model.

[0014] Figure 2 This is a top view of the carbon source-based high-efficiency denitrification device for wastewater according to this utility model.

[0015] Figure 3 This is a right view of the carbon source-based high-efficiency denitrification device for wastewater according to this utility model.

[0016] Figure 4 This is the utility model Figure 3 A sectional view along line AA.

[0017] 101-Treatment tank, 102-Guide rail frame, 103-Filter screen, 104-Scraper, 105-Matching plate, 106-Vertical rod frame, 107-Baffle, 108-Connecting pipe, 109-Storage tank, 110-Mounting frame, 111-Discharge pipe, 112-Solenoid valve, 113-Agitator, 114-Connecting frame, 115-Aerator, 116-Air distribution pipe, 117-Nozzle, 118-Support frame, 119-Drive motor. Detailed Implementation

[0018] Please see Figures 1 to 4 ,in, Figure 1 This is a schematic diagram of the structure of the carbon source-based high-efficiency nitrogen removal device for wastewater according to this utility model. Figure 2 This is a top view of the carbon source-based high-efficiency nitrogen removal device for wastewater according to this utility model. Figure 3 This is a right view of the carbon source-based high-efficiency nitrogen removal device for wastewater according to this utility model. Figure 4 This is the utility model Figure 3 A sectional view along line AA.

[0019] This utility model provides a carbon source-based high-efficiency denitrification device for wastewater, including a treatment tank 101 and a treatment unit. The treatment unit includes a guide rail frame 102, a filter screen 103, a scraper 104, a fitting plate 105, a vertical rod frame 106, two partitions 107, two connecting pipes 108, a dosing component, and an aeration component. The dosing component includes a storage tank 109, a mounting frame 110, a liquid outlet pipe 111, a solenoid valve 112, a stirring frame 113, and a connecting frame 114. The aeration component includes an aerator 115, an air distribution pipe 116, a nozzle 117, and a support frame 118.

[0020] The processing unit is connected to the processing pool 101; the guide rail frame 102 is fixedly connected to the processing pool 101 and located on the inner wall of the processing pool 101; the filter screen plate 103 is slidably connected to the guide rail frame 102 and located on the inner wall of the guide rail frame 102; the mating plate 105 is fixedly connected to the filter screen plate 103 and located below the filter screen plate 103, and the mating plate 105 is adapted to the processing pool 101; the scraper 104 is fixedly connected to the filter screen plate 103 and located below the filter screen plate 103. The scraper 104 is slidably engaged with the treatment tank 101, the vertical rod frame 106 is fixedly connected to the filter screen plate 103 and located above the filter screen plate 103, the two partitions 107 are fixedly connected to the treatment tank 101 and are respectively located on the inner side wall of the treatment tank 101, the two connecting pipes 108 are respectively connected to the corresponding partitions 107 and are located on one side of the partitions 107, the dosing component is disposed above the treatment tank 101, and the aeration component is disposed on the inner side wall of the treatment tank 101.

[0021] In this embodiment, wastewater is discharged into the treatment tank 101. After passing through the filter screen 103, suspended solid particles in the wastewater are trapped on one side of the filter screen 103. The wastewater then enters the space between the two partitions 107 through the connecting pipe 108. Liquid composite carbon source is added with the dosing component. Under anoxic or anaerobic conditions, denitrifying microorganisms use the composite carbon source as an electron donor to reduce nitrates to nitrogen gas. The nitrogen gas then flows into the chamber formed by the rightmost partition 107 and the treatment tank 101, where oxygen is provided by the aeration component. Afterward, the nitrogen gas is discharged for sedimentation. During cleaning, simply hold the vertical rod frame 106 to slide the filter screen 103 within the guide rail frame 102, causing the scraper 104 to move the impurities upward. This method cleans the impurities in the treatment tank 101, avoiding any impact on the efficiency and quality of subsequent nitrogen removal.

[0022] Furthermore, the mounting bracket 110 is fixedly connected to the treatment pool 101 and located above the treatment pool 101; the storage tank 109 is detachably connected to the mounting bracket 110 and located above the mounting bracket 110; the outlet pipe 111 is connected to the storage tank 109 and located at the bottom of the storage tank 109; and the solenoid valve 112 is connected to the outlet pipe 111 and located in the middle of the outlet pipe 111.

[0023] In this embodiment, the controller is clicked to activate the solenoid valve 112, which discharges the liquid composite carbon source in the storage tank 109 into the chamber formed by the two partitions 107. Under hypoxic or anaerobic conditions, the denitrifying microorganisms use the composite carbon source as an electron donor to reduce nitrate to nitrogen gas, thereby completing the removal of nitrogen gas from the wastewater.

[0024] Furthermore, the stirring rack 113 is disposed above the mounting frame 110, and the connecting frame 114 is fixedly connected to the stirring rack 113 and located above the stirring rack 113.

[0025] In this embodiment, the drive motor 119 is fixed to the mounting frame 110, and its output end is then fixed to the connecting frame 114. The drive motor 119 is started to drive the stirring frame 113 to rotate, thereby stirring and mixing the wastewater and liquid composite carbon source to improve the quality of nitrogen removal.

[0026] Furthermore, the aerator 115 is detachably connected to the treatment tank 101 and is located on the outer wall of the treatment tank 101. The air distribution pipe 116 is connected to the aerator 115 and is located at the output end of the aerator 115. The nozzle 117 is connected to the air distribution pipe 116 and is located on the outer wall of the air distribution pipe 116.

[0027] In this embodiment, the aerator 115 and the air distribution pipe 116 are used to provide oxygen. By generating bubbles and stirring the water flow, the activity of microorganisms in the aerobic tank is promoted. The rising and breaking of bubbles will drive the water flow, increase the turbulence in the water, and enable microorganisms to come into more full contact and mix with organic matter in the wastewater.

[0028] Furthermore, the support frame 118 is fixedly connected to the treatment tank 101 and is located on the inner bottom wall of the treatment tank 101, and the support frame 118 is detachably connected to the air distribution pipe 116.

[0029] In this embodiment, the support frame 118 is used to fix the air distribution pipe 116, to prevent the air distribution pipe 116 from shaking, and to reduce maintenance costs.

[0030] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art will understand that all or part of the processes for implementing the above embodiments, and equivalent variations made in accordance with the claims of this application, still fall within the scope of this application.

Claims

1. A high-efficiency nitrogen removal device for wastewater based on a carbon source, comprising a treatment tank, characterized in that, It also includes a processing unit, which is connected to the processing pool; The treatment unit includes a guide rail frame, a filter screen, a scraper, a mating plate, a vertical rod frame, two partitions, two connecting pipes, a dosing component, and an aeration component. The guide rail frame is fixedly connected to the treatment tank and located on the inner wall of the treatment tank. The filter screen is slidably connected to the guide rail frame and located on the inner wall of the guide rail frame. The mating plate is fixedly connected to the filter screen and located below the filter screen, and the mating plate is adapted to the treatment tank. The scraper is fixedly connected to the filter screen and located on one side of the filter screen, and the scraper is slidably engaged with the treatment tank. The vertical rod frame is fixedly connected to the filter screen and located above the filter screen. Both partitions are fixedly connected to the treatment tank and located on the inner wall of the treatment tank. The two connecting pipes communicate with the corresponding partitions and are located on one side of the partitions. The dosing component is located above the treatment tank, and the aeration component is located on the inner wall of the treatment tank.

2. The high-efficiency nitrogen removal device for wastewater based on a carbon source as described in claim 1, characterized in that, The dosing assembly includes a storage tank, a mounting frame, a dispensing pipe, and a solenoid valve. The mounting frame is fixedly connected to the treatment pool and located above the treatment pool. The storage tank is detachably connected to the mounting frame and located above the mounting frame. The dispensing pipe communicates with the storage tank and is located at the bottom of the storage tank. The solenoid valve communicates with the dispensing pipe and is located in the middle of the dispensing pipe.

3. The high-efficiency nitrogen removal device for wastewater based on a carbon source as described in claim 2, characterized in that, The dosing assembly also includes a stirring frame and a connecting frame. The stirring frame is disposed above the mounting frame, and the connecting frame is fixedly connected to the stirring frame and located above the stirring frame.

4. The high-efficiency nitrogen removal device for wastewater based on a carbon source as described in claim 3, characterized in that, The aeration assembly includes an aerator, an air distribution pipe, and a nozzle. The aerator is detachably connected to the treatment tank and is located on the outer wall of the treatment tank. The air distribution pipe is connected to the aerator and is located at the output end of the aerator. The nozzle is connected to the air distribution pipe and is located on the outer wall of the air distribution pipe.

5. The high-efficiency nitrogen removal device for wastewater based on a carbon source as described in claim 4, characterized in that, The aeration assembly also includes a support frame, which is fixedly connected to the treatment tank and located on the inner bottom wall of the treatment tank. The support frame is detachable from the air distribution pipe.

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