Wastewater treatment device based on biochar-based filter bed treatment

Abstract

The utility model discloses a wastewater treatment device based on charcoal-based filter bed treatment. The wastewater treatment device comprises a water inlet, a box body, an aeration tank, a charcoal filter tank I, a charcoal filter tank II, a filter plate replacement mechanism, a filter plate mechanism, a water outlet I and a water outlet II, the water inlet is formed in the front end of the box body, the aeration tank, the carbon filter tank I and the carbon filter tank II are sequentially arranged in the box body from front to back, the carbon filter tank I and the carbon filter tank II are arranged, and the two groups of carbon filter tanks alternately work when the carbon filter plates are replaced, so that the adsorption and filtration of carbon are not influenced, and the adsorption and filtration efficiency is improved. The carbon filter plate is automatically replaced through the filter plate replacement mechanism; a carbon filter plate of the filter plate mechanism adsorbs and filters wastewater, and the locking mechanism locks the carbon filter plate in a filter plate bracket, so that the stability of the carbon filter plate in the adsorption and filtration process is ensured; the filter plate replacement mechanism adjusts the position of the trigger mechanism, and the trigger mechanism controls the locking mechanism to be opened and closed, so that the replacement of the carbon filter plate is completed.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, and specifically relates to a wastewater treatment device based on biochar-based filter bed treatment. Background Technology

[0002] Traditional biochar treatment tanks typically fix the carbon filter plates in the tank using a mounting bracket. After prolonged use, the carbon filter plates need to be replaced manually after the tank is shut down and the wastewater is drained. This process involves multiple steps, including disassembling the mounting bracket, replacing the carbon filter plates, and reinstalling them. This is time-consuming, labor-intensive, and increases labor costs. Furthermore, the system's processing capacity drops to zero during the replacement process, affecting work efficiency and the continuity of wastewater treatment.

[0003] A search revealed a wastewater treatment device based on a biochar-based filter bed, with prior art authorization announcement number CN222151005U. When the biochar-based filter bed in one or more filter chambers needs replacement, the corresponding inlet and outlet branch pipes are blocked, and then the filter chamber is removed for treatment of the biochar-based filter bed. Although the device does not require shutdown during replacement, the removed portion of the filter chamber affects the overall filtration effect of the wastewater. Another search revealed a wastewater treatment device with prior art authorization announcement number CN223016564U. This device allows the filter frame and activated carbon frame to be removed from the pipes for cleaning. However, during the cleaning and replacement of the filter frame and activated carbon frame, the device must be shut down, reducing the system's processing capacity to zero, affecting work efficiency and the continuity of wastewater treatment. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a wastewater treatment device based on biochar-based filter bed treatment. By setting up biochar filter tank I and biochar filter tank II, the two sets of biochar filter tanks work alternately when the biochar filter plates are replaced. Without affecting biochar adsorption and filtration, the biochar filter plates are automatically replaced by a filter plate replacement mechanism. The biochar filter plates of the filter plate mechanism adsorb and filter the wastewater, and a locking mechanism locks the biochar filter plates within the filter plate support to ensure the stability of the biochar filter plates during the adsorption and filtration process. The filter plate replacement mechanism adjusts the position of the trigger mechanism, which controls the opening and closing of the locking mechanism to complete the replacement of the biochar filter plates.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A wastewater treatment device based on biochar-based filter bed includes an inlet, a housing, an aeration tank, a biochar filter tank I, a biochar filter tank II, a filter plate replacement mechanism, a filter plate mechanism, an outlet I, and an outlet II. The inlet is located at the front end of the housing. Inside the housing, from front to back, the aeration tank, biochar filter tank I, and biochar filter tank II are arranged sequentially. A transparent observation cover is provided on the upper part of the housing, with multiple sets of lifting ports. A transparent cover is provided above each lifting port. The inlet is connected to the aeration tank, and an aeration pipe is located at the bottom of the aeration tank. A grid plate is located at the rear end of the aeration tank, and biochar filter tank I is located at the rear end of the grid plate. A partition is located at the rear end of biochar filter tank I, and a connecting pipe is located below the partition. A one-way valve is installed inside the connecting pipe. Biochar filter tank II is located at the rear end of the partition. Outlet I is located on the side of biochar filter tank I, and outlet II is located on the side of biochar filter tank II. Both outlet I and outlet II are equipped with one-way valves. Multiple filter plate mechanisms are provided, evenly distributed inside carbon filter tank I and carbon filter tank II. Filter plate replacement mechanisms are located on both sides of the tank.

[0007] Wastewater enters the aeration tank through the inlet, where aeration pipes aerate the wastewater. After initial filtration by the bar screen, the wastewater enters the carbon filter tank I, where the filter plate mechanism adsorbs and filters the wastewater. The filtered wastewater flows out of the tank through outlet I to proceed to the next process. When the filter plate mechanism in carbon filter tank I needs to be replaced after prolonged use, outlet I is first closed via a check valve, and then the check valve in the connecting pipe on the baffle is opened. The wastewater passes through carbon filter tank I and then through the connecting pipe into carbon filter tank II. At this time, the filter plate replacement mechanism replaces the filter plate mechanism in carbon filter tank I. The replacement process does not affect the filtration operation of carbon filter tank II. After adsorption and filtration by the filter plate mechanism in carbon filter tank II, the filtered wastewater flows out of the tank through outlet II to proceed to the next process.

[0008] The filter plate replacement mechanism includes a motor, a fixed platform, a lead screw, a moving block, a moving frame, a triggering mechanism, and a limiting shaft. The motor is mounted on a motor mounting plate, which is fixed to the fixed platform. The fixed platform is fixed to both sides of the housing. The motor output end is connected to the lead screw. There are two sets of moving blocks: one set is connected to the lead screw, and the other set is slidably connected to the limiting shaft. A moving frame is provided on the upper part of the moving block, and two sets of triggering mechanisms are provided on both sides of the moving frame. The motor controls the lead screw to rotate, the lead screw drives the moving block to move, the moving block drives the moving frame to move, and the moving frame drives the triggering mechanism to adjust the position of the triggering mechanism.

[0009] The triggering mechanism includes a moving platform I, an electric actuator, a fixed plate I, a connecting rod, a contact block, a limiting rod, a limiting plate, and a moving platform II. The moving platform I and moving platform II are fixedly connected to the moving frame. The electric actuator is fixed to the moving platform II. The protruding end of the electric actuator is provided with a rack I, which is disposed in a moving slide groove I. The moving slide groove I is fixed to the moving platform II. The rack I meshes with a gear I, which is disposed on a transmission shaft I. The transmission shaft I is disposed between the fixed plates I, which are fixed to the moving platform I. The transmission shaft I is rotatably connected to the fixed plate I. One end of the transmission shaft I is equipped with a connecting rod, and the lower part of the connecting rod is equipped with a contact block. A limiting rod is provided on one side of the contact block. The limiting rod is set in a groove on the limiting plate. The limiting plate is fixed on the moving platform I. The electric push rod pushes the rack I. The rack I moves along the direction of the moving groove I. The rack I meshes with the gear I. The rotation of the gear I drives the transmission shaft I to rotate. The transmission shaft I drives the connecting rod to swing. The connecting rod drives the contact block to swing. The limiting rod on one side of the contact block is set in a groove on the limiting plate. The limiting plate ensures the movement range of the contact block.

[0010] The filter plate mechanism includes a filter plate support, a carbon filter plate, lifting lugs, a baffle, and a locking mechanism. The filter plate support is fixed inside the housing, and the carbon filter plate is disposed inside the filter plate support. The carbon filter plate is slidably connected to the filter plate support. A pair of lifting lugs are provided on the upper part of the carbon filter plate. The baffle is fixed on one side of the filter plate support, and a locking mechanism is provided on the upper part of the baffle. The locking mechanism is also disposed on the filter plate support to ensure the stability of the carbon filter plate inside the filter plate support.

[0011] The locking mechanism includes a fixed plate II, a connecting shaft, a fixed plate III, a spring, a contact plate, a Z-shaped cover plate, and a movable slide groove II. The fixed plate II is fixed on the filter plate support. The connecting shaft is located between two sets of fixed plates II and is rotatably connected to the fixed plate II. The Z-shaped cover plate and gear II are located on the connecting shaft. Gear II is fixedly connected to the connecting shaft. Gear II meshes with gear I. Gear I is located on the transmission shaft III and is rotatably connected to the transmission shaft III. Both ends of the transmission shaft III are fixed inside the housing. Gear III meshes with rack II. Rack II is located in the movable slide groove II and is slidably connected to the movable slide groove II. One end of rack II is provided with a contact plate. The upper part of rack II is fixed with fixed plate III. The sliding shaft passes through a round hole provided on fixed plate III and is fixedly connected to the filter plate support. The sliding shaft is slidably connected to fixed plate III. A spring is provided between fixed plate III and filter plate support, and the spring is also sleeved on the sliding shaft.

[0012] The electric actuator of the triggering mechanism pushes rack I, which moves along the sliding groove I. Rack I meshes with gear I, and the rotation of gear I drives the transmission shaft I to rotate. The transmission shaft I drives the connecting rod to swing, and the connecting rod drives the contact block to swing. The contact block touches the contact plate of the locking mechanism, and the contact plate pushes rack II to move backward. The fixed plate III on rack II pushes the spring to contract, and rack II meshes with gear III. Gear III meshes with gear II, and gear II drives the connecting shaft to rotate. The connecting shaft drives the Z-shaped cover plate to rotate, and the upper opening of the filter plate support opens. The carbon filter plate is then lifted through the lifting lug and lifted out of the housing through the lifting port, completing the replacement of the carbon filter plate. When the contact block of the triggering mechanism swings backward and no longer touches the contact plate of the locking mechanism, the contracted spring pushes the fixed plate III forward to reset. The fixed plate III drives rack II to move forward, and rack II meshes with gear III. Gear III meshes with gear II, and gear II drives the connecting shaft. The connecting shaft drives the Z-shaped cover plate to reset, ensuring the stability of the carbon filter plate within the filter plate support.

[0013] The advantages of this utility model compared with the prior art are as follows:

[0014] By setting up carbon filter tank I and carbon filter tank II, the two sets of carbon filter tanks work alternately when the carbon filter plates are replaced. Without affecting the carbon adsorption and filtration, the carbon filter plates are automatically replaced by the filter plate replacement mechanism. The carbon filter plates of the filter plate mechanism adsorb and filter the wastewater. The locking mechanism locks the carbon filter plates in the filter plate support to ensure the stability of the carbon filter plates during the adsorption and filtration process. The filter plate replacement mechanism adjusts the position of the trigger mechanism, which controls the opening and closing of the locking mechanism to complete the replacement of the carbon filter plates. Attached Figure Description

[0015] Appendix Figure 1 This is a schematic diagram of a wastewater treatment device based on a biochar-based filter bed according to this utility model. Figure 1 ;

[0016] Appendix Figure 2 It is attached Figure 1 Schematic diagram of the intermediate filter plate replacement mechanism;

[0017] Appendix Figure 3 It is attached Figure 2 Schematic diagram of the trigger mechanism;

[0018] Appendix Figure 4 It is attached Figure 1 Schematic diagram of the middle filter plate mechanism;

[0019] Appendix Figure 5 It is attached Figure 4 Schematic diagram of the locking mechanism;

[0020] Appendix Figure 6 This is a schematic diagram of a wastewater treatment device based on a biochar-based filter bed according to this utility model. Figure 2 ;

[0021] In the diagram: 11. Inlet; 12. Box body; 13. Aeration tank; 14. Aeration pipe; 15. Grating plate; 16. Carbon filter tank I; 17. Baffle plate; 18. Connecting pipe; 19. Carbon filter tank II; 20. Filter plate replacement mechanism; 21. Filter plate mechanism; 22. Outlet I; 23. Outlet II; 24. Transparent observation cover; 25. Lifting port;

[0022] 101. Motor; 102. Motor mounting plate; 103. Fixed platform; 104. Lead screw; 105. Moving block; 106. Moving frame; 107. Triggering mechanism; 108. Limit shaft;

[0023] 1101. Moving Platform I; 1102. Electric Actuator; 1103. Rack I; 1104. Moving Slide I; 1105. Gear I; 1106. Drive Shaft I; 1107. Fixed Plate I; 1108. Connecting Rod; 1109. Contact Block; 1110. Limiting Rod; 1111. Limiting Plate; 1112. Moving Platform II;

[0024] 201. Filter plate support; 202. Carbon filter plate; 203. Lifting lug; 204. Baffle; 205. Locking mechanism;

[0025] 2101. Fixed plate II; 2102. Connecting shaft; 2103. Gear II; 2104. Gear III; 2105. Transmission shaft III; 2106. Rack II; 2107. Fixed plate III; 2108. Sliding shaft; 2109. Spring; 2110. Contact plate; 2111. Z-shaped cover plate; 2112. Moving slide II. Detailed Implementation

[0026] To facilitate understanding by those skilled in the art, the following is a detailed explanation in conjunction with the appendix. Figure 1-6 The technical solution of this utility model will be further described in detail below.

[0027] A wastewater treatment device based on biochar-based filter bed includes an inlet 11, a housing 12, an aeration tank 13, a biochar filter I 16, a biochar filter II 19, a filter plate replacement mechanism 20, a filter plate mechanism 21, an outlet I 22, and an outlet II 23. The inlet 11 is located at the front end of the housing 12. The aeration tank 13, biochar filter I 16, and biochar filter II 19 are arranged sequentially from front to back inside the housing 12. A transparent observation cover 24 is provided on the upper part of the housing 12, and the transparent observation cover 24 has multiple sets of lifting ports 25. The upper part of the hoisting port 25 is equipped with a transparent cover plate. The inlet 11 is connected to the aeration tank 13. The aeration pipe 14 is set at the bottom of the aeration tank 13. The rear end of the aeration tank 13 is equipped with a grid plate 15. The rear end of the grid plate 15 is equipped with a carbon filter tank I 16. The rear end of the carbon filter tank I 16 is equipped with a partition plate 17. The connecting pipe 18 is set at the lower part of the partition plate 17. The connecting pipe 18 is equipped with a one-way valve. The rear end of the partition plate 17 is equipped with a carbon filter tank II 19. The side of the carbon filter tank I 16 is equipped with an outlet I 22. The side of the carbon filter tank II 19 is equipped with an outlet II 23. Both outlet I 22 and outlet II 23 are equipped with one-way valves. The filter plate mechanism 21 is provided in multiple sets, which are evenly arranged inside the carbon filter tank I 16 and the carbon filter tank II 19. The filter plate replacement mechanism 20 is set on both sides of the box body 12.

[0028] Wastewater enters aeration tank 13 through inlet 11. Aeration pipe 14 in aeration tank 13 aerates the wastewater. After preliminary filtration by bar screen 15, the wastewater enters carbon filter tank I 16. Filter plate mechanism 21 adsorbs and filters the wastewater. The filtered wastewater flows out of tank 12 through outlet I 22 and enters the next process. When filter plate mechanism 21 in carbon filter tank I 16 needs to be replaced after long-term operation, first close outlet I 22 through check valve, open check valve in connecting pipe 18 on partition 17. Wastewater passes through carbon filter tank I 16 and then through connecting pipe 18 into carbon filter tank II 19. At this time, filter plate replacement mechanism 20 replaces filter plate mechanism 21 in carbon filter tank I 16. The replacement process does not affect the filtration operation of carbon filter tank II 19. After adsorption and filtration by filter plate mechanism 21 in carbon filter tank II 19, the filtered wastewater flows out of tank 12 through outlet II 23 and enters the next process.

[0029] The filter plate replacement mechanism 20 includes a motor 101, a fixed platform 103, a lead screw 104, a moving block 105, a moving frame 106, a triggering mechanism 107, and a limiting shaft 108. The motor 101 is mounted on a motor mounting plate 102, which is fixed to the fixed platform 103. The fixed platform 103 is fixed to both sides of the housing 12. The output end of the motor 101 is connected to the lead screw 104. The moving block 105 has two sets: one set is connected to the lead screw 104, and the other set is slidably connected to the limiting shaft 108. The moving frame 106 is located on the upper part of the moving block 105, and two sets of triggering mechanisms 107 are located on both sides of the moving frame 106. The motor 101 controls the lead screw 104 to rotate, the lead screw 104 drives the moving block 105 to move, the moving block 105 drives the moving frame 106 to move, and the moving frame 106 drives the triggering mechanism 107 to adjust the position of the triggering mechanism 107.

[0030] The triggering mechanism 107 includes a moving platform I 1101, an electric push rod 1102, a fixed plate I 1107, a connecting rod 1108, a contact block 1109, a limiting rod 1110, a limiting plate 1111, and a moving platform II 1112. The moving platform I 1101 and moving platform II 1112 are fixedly connected to the moving frame 106. The electric push rod 1102 is fixed on the moving platform II 1112. The protruding end of the electric push rod 1102 is provided with a rack I 1103, which is disposed in a moving slide groove I 1104. The moving slide groove I 1104 is fixed on the moving platform II 1112. The rack I 1103 meshes with a gear I 1105, which is disposed on a transmission shaft I 1106. The transmission shaft I 1106 is disposed between the fixed plates I 1107, which are fixed on the moving platform I 1101. 6 is rotatably connected to the fixed plate I1107. One end of the transmission shaft I1106 is provided with a connecting rod 1108. The lower part of the connecting rod 1108 is provided with a contact block 1109. One side of the contact block 1109 is provided with a limiting rod 1110. The limiting rod 1110 is set in the slide groove on the limiting plate 1111. The limiting plate 1111 is fixed on the moving platform I1101. The electric push rod 1102 pushes the rack I1103. The rack I1103 moves along the sliding groove. When groove I1104 moves in the direction of the rack I1103, it meshes with gear I1105. The rotation of gear I1105 drives the transmission shaft I1106 to rotate. The transmission shaft I1106 drives the connecting rod 1108 to swing. The connecting rod 1108 drives the contact block 1109 to swing. The limiting rod 1110 on one side of the contact block 1109 is set in the slide groove on the limiting plate 1111. The limiting plate 1111 ensures the movement range of the contact block 1109.

[0031] The filter plate mechanism 21 includes a filter plate support 201, a carbon filter plate 202, lifting lugs 203, a baffle 204, and a locking mechanism 205. The filter plate support 201 is fixed inside the housing 12, and the carbon filter plate 202 is disposed inside the filter plate support 201. The carbon filter plate 202 is slidably connected to the filter plate support 201. A pair of lifting lugs 203 are provided on the upper part of the carbon filter plate 202. The baffle 204 is fixed on one side of the filter plate support 201, and the locking mechanism 205 is provided on the upper part of the baffle 204. The locking mechanism 205 is also disposed on the filter plate support 201, and the stability of the carbon filter plate 202 inside the filter plate support 201 is ensured by the locking mechanism 205.

[0032] The locking mechanism 205 includes a fixed plate II 2101, a connecting shaft 2102, a fixed plate III 2107, a spring 2109, a contact plate 2110, a Z-shaped cover plate 2111, and a movable slide groove II 2112. The fixed plate II 2101 is fixed on the filter plate support 201. The connecting shaft 2102 is disposed between the two sets of fixed plates II 2101 and is rotatably connected to the fixed plate II 2101. The Z-shaped cover plate 2111 and gear II 2103 are disposed on the connecting shaft 2102. Gear II 2103 is fixedly connected to the connecting shaft 2102 and meshes with gear I 1105. Gear I 1105 is disposed on the transmission shaft III 2105 and is connected to the transmission shaft III 2105. Ⅲ2105 is rotatably connected, and both ends of the drive shaft Ⅲ2105 are fixed inside the housing 12. Gear Ⅲ2104 meshes with rack Ⅱ2106. Rack Ⅱ2106 is set in the movable slide groove Ⅱ2112 and is slidably connected to the movable slide groove Ⅱ2112. One end of rack Ⅱ2106 is provided with a contact plate 2110. A fixing plate Ⅲ2107 is fixed on the upper part of rack Ⅱ2106. Sliding shaft 2108 passes through the round hole provided on the fixing plate Ⅲ2107 and is fixedly connected to the filter plate support 201. Sliding shaft 2108 is slidably connected to fixing plate Ⅲ2107. A spring 2109 is provided between fixing plate Ⅲ2107 and filter plate support 201. The spring 2109 is also sleeved on sliding shaft 2108.

[0033] The electric actuator 1102 of the triggering mechanism 107 pushes rack I 1103, which moves along the sliding groove I 1104. Rack I 1103 meshes with gear I 1105, and the rotation of gear I 1105 drives the transmission shaft I 1106 to rotate. The transmission shaft I 1106 drives the connecting rod 1108 to swing, and the connecting rod 1108 drives the contact block 1109 to swing. The contact block 1109 touches the contact plate 2110 of the locking mechanism 205, and the contact plate 2110 pushes rack II 2106 to move backward. The fixing plate III 2107 on rack II 2106 pushes the spring 2109 to contract. Rack II 2106 meshes with gear III 2104, and gear III 2104 meshes with gear II 2103. Gear II 2103 drives the connecting shaft 2102 to rotate, and the connecting shaft 2102 drives the Z-shaped cover plate. Rotating 2111 opens the upper opening of the filter plate support 201, allowing the carbon filter plate 202 to be hoisted via the lifting lug 203. The transparent cover is then removed, and the carbon filter plate 202 is hoisted out of the housing 12 through the hoisting port 25, completing the replacement of the carbon filter plate 202. When the contact block 1109 of the trigger mechanism 107 swings backward and no longer touches the contact plate 2110 of the locking mechanism 205, the spring 2109 in its contracted state pushes the fixing plate Ⅲ 2107 forward to reset. The fixing plate Ⅲ 2107 drives the rack Ⅱ 2106 to move forward. The rack Ⅱ 2106 meshes with the gear Ⅲ 2104, and the gear Ⅲ 2104 meshes with the gear Ⅱ 2103. The gear Ⅱ 2103 drives the connecting shaft 2102, which in turn drives the Z-shaped cover plate 2111 to reset, ensuring the stability of the carbon filter plate 202 within the filter plate support 201.

[0034] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] In summary, the electronic or electrical components, including but not limited to motors and electric actuators, are existing components that were custom-made or purchased. The electrical connections between these components are conventional circuit or electrical connections in the prior art and are not within the scope of protection of this utility model.

[0036] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A wastewater treatment device based on biochar-based filter bed treatment, comprising an inlet, a housing, an aeration tank, a biochar filter tank I, a biochar filter tank II, a filter plate replacement mechanism, a filter plate mechanism, an outlet I, and an outlet II; characterized in that... The inlet is located at the front of the tank. Inside the tank, from front to back, there are an aeration tank, a carbon filter tank I, and a carbon filter tank II. The inlet is connected to the aeration tank. An aeration pipe is located at the bottom of the aeration tank. A grid plate is located at the rear of the aeration tank. Carbon filter tank I is located at the rear of the grid plate. A partition is located at the rear of carbon filter tank I. A connecting pipe is located at the lower part of the partition. A one-way valve is installed in the connecting pipe. Carbon filter tank II is located at the rear of the partition. Outlet I is located on the side of carbon filter tank I. Outlet II is located on the side of carbon filter tank II. One-way valves are installed in both outlet I and outlet II. Multiple filter plate mechanisms are provided and evenly distributed inside carbon filter tank I and carbon filter tank II. Filter plate replacement mechanisms are located on both sides of the tank.

2. The wastewater treatment device based on biochar-based filter bed treatment according to claim 1, characterized in that... The filter plate replacement mechanism includes a motor, a fixed platform, a lead screw, a moving block, a moving frame, a triggering mechanism, and a limiting shaft. The motor is mounted on a motor mounting plate, which is fixed to the fixed platform. The fixed platform is fixed to both sides of the housing. The motor output end is connected to the lead screw. There are two sets of moving blocks: one set is connected to the lead screw, and the other set is slidably connected to the limiting shaft. A moving frame is provided on the upper part of the moving block, and two sets of triggering mechanisms are provided on both sides of the moving frame. The motor controls the lead screw to rotate, the lead screw drives the moving block to move, the moving block drives the moving frame to move, and the moving frame drives the triggering mechanism to adjust the position of the triggering mechanism.

3. The wastewater treatment device based on biochar-based filter bed treatment according to claim 2, characterized in that... The triggering mechanism includes a moving platform I, an electric push rod, a fixed plate I, a connecting rod, a contact block, a limiting rod, a limiting plate, and a moving platform II. The moving platform I and the moving platform II are fixedly connected to the moving frame. The electric push rod is fixed on the moving platform II. The top end of the electric push rod is provided with a rack I, which is set in a moving slide groove I. The moving slide groove I is fixed on the moving platform II. The rack I meshes with a gear I, which is set on a transmission shaft I. The transmission shaft I is set between the fixed plates I and the fixed plate I is fixed on the moving platform I. The transmission shaft I is rotatably connected to the fixed plate I. One end of the transmission shaft I is provided with a connecting rod, and the lower part of the connecting rod is provided with a contact block. One side of the contact block is provided with a limiting rod, which is set in a slide groove on the limiting plate. The limiting plate is fixed on the moving platform I.

4. The wastewater treatment device based on biochar-based filter bed treatment according to claim 1, characterized in that... The filter plate mechanism includes a filter plate support, a carbon filter plate, lifting lugs, a baffle, and a locking mechanism. The filter plate support is fixed inside the housing, and the carbon filter plate is disposed inside the filter plate support. The carbon filter plate is slidably connected to the filter plate support. A pair of lifting lugs are provided on the upper part of the carbon filter plate. The baffle is fixed on one side of the filter plate support, and a locking mechanism is provided on the upper part of the baffle. The locking mechanism is also disposed on the filter plate support.

5. A wastewater treatment device based on biochar-based filter bed treatment according to claim 4, characterized in that... The locking mechanism includes a fixed plate II, a connecting shaft, a fixed plate III, a sliding shaft, a spring, a contact plate, a Z-shaped cover plate, and a movable slide groove II. The fixed plate II is fixed on the filter plate support. The connecting shaft is located between two sets of fixed plates II and is rotatably connected to the fixed plate II. The Z-shaped cover plate and gear II are located on the connecting shaft. Gear II is fixedly connected to the connecting shaft. Gear II meshes with gear I. Gear I is located on the transmission shaft III and is rotatably connected to the transmission shaft III. Both ends of the transmission shaft III are fixed inside the housing. Gear III meshes with rack II. Rack II is located in the movable slide groove II and is slidably connected to the movable slide groove II. One end of rack II is provided with a contact plate. The upper part of rack II is fixed with fixed plate III. The sliding shaft passes through a round hole provided on fixed plate III and is fixedly connected to the filter plate support. The sliding shaft is slidably connected to fixed plate III. A spring is provided between fixed plate III and filter plate support, and the spring is also sleeved on the sliding shaft.

6. The wastewater treatment device based on biochar-based filter bed treatment according to claim 1, characterized in that... The upper part of the box is equipped with a transparent observation cover, which has multiple sets of lifting ports, and the upper part of the lifting ports is equipped with a transparent cover plate.

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