Landfill leachate adjusting tank

Abstract

The utility model relates to the technical field of wastewater treatment, and discloses a landfill leachate adjusting tank which comprises a tank body with a [-shaped flow channel and a plurality of sludge accumulation hoppers arranged along the path direction of the flow channel, a water inlet pipeline is arranged at the water inlet end of the flow channel of the tank body, and a water outlet pipeline is arranged at the water inlet end of the flow channel of the tank body. A sludge sliding inclined surface for guiding sludge to slide to the bottom of the tank body is formed on the side surface of the sludge accumulation hopper. According to the landfill leachate adjusting tank provided by the utility model, settled sludge is intensively guided to the sludge accumulation hopper area at the tank bottom by the sludge sliding inclined surface, so that the sludge is prevented from being diffused and accumulated at other positions at the tank bottom, the effective volume of the adjusting tank is effectively maintained, and the service life of a water quality and water quantity adjusting function is prolonged. Most of sludge in the pond is concentrated in the sludge accumulation bucket area, and accurate suction can be directly carried out on the bottom of each sludge accumulation bucket through the sludge suction pipeline independently arranged on each sludge accumulation bucket.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, and particularly relates to a garbage leachate regulating tank. Background Art

[0002] The garbage leachate regulating tank is mainly used to regulate the water quality (such as balancing pollutant concentration) and water volume of the garbage leachate, and provide stable influent conditions for subsequent treatment processes. However, the following technical problems generally exist in the existing garbage leachate regulating tanks during long-term operation:

[0003] Firstly, the sludge accumulation in the regulating tank causes the effective volume to continuously decrease, resulting in the loss of the regulating function. Currently, common regulating tanks mostly adopt a simple closed cuboid structure design. Although a certain slope and sump are set at the bottom of the tank, due to the extremely high suspended solid concentration in the garbage leachate, even with the pretreatment of a grille and sedimentation tank at the front section, the suspended solids in the leachate cannot be completely removed. At the same time, the chemical oxygen demand of the leachate is extremely high, and there is inevitably the phenomenon of anaerobic microorganism proliferation in the regulating tank, further promoting the continuous sedimentation and accumulation of organic and inorganic suspended solids at the bottom of the tank. As the operation time prolongs, the sludge at the bottom of the tank accumulates continuously, and the effective volume of the regulating tank gradually shrinks, ultimately losing the regulating functions of water quality and water volume.

[0004] Secondly, although in the prior art, the slope at the bottom of the tank, the sump and the sludge pumping pump are used to assist in dredging, due to the high viscosity and extremely poor fluidity of the deposited sludge, it basically cannot flow into the sump automatically, and the actual dredging effect of the sludge pumping pump is extremely limited.

[0005] In addition, the water quality regulation ability is limited. The structural design of the existing regulating tank is difficult to solve the problem of continuous sedimentation of suspended solids, resulting in unstable flow patterns in the tank, easy formation of short circuits (part of the water flow flows out without sufficient mixing) or dead zones (the water flow stagnates in local areas), further aggravating the sludge accumulation and reducing the water quality homogenization effect, and affecting the stability of subsequent treatment processes.

[0006] It can be seen that the prior art still needs to be improved and enhanced. Content of the Utility Model

[0007] In view of the deficiencies of the above prior art, the purpose of the utility model is to provide a garbage leachate regulating tank, aiming to guide the settled sludge to a centralized set area, and then accurately suck the sludge to ensure that the regulating tank has sufficient volume to regulate the water quality.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A landfill leachate regulating tank comprises a tank body with a 匚-shaped flow channel, a plurality of sludge hoppers arranged along the path direction of the 匚-shaped flow channel, a water inlet pipe is provided at the water inlet end of the 匚-shaped flow channel of the tank body, and a water outlet pipe is provided at the water outlet end of the 匚-shaped flow channel of the tank body, a mud sliding slope is formed on the side of the mud hopper for guiding the sludge to slide down to the bottom of the tank body, and each mud hopper is equipped with a sludge extraction pipe for extracting the sludge around the mud hopper, and the sludge extraction pipe extends out of the tank body and is connected to a screw pump.

[0010] As a further improvement of the above technical solution, the mud hopper is in the shape of a frustum.

[0011] As a further improvement of the above technical solution, the silt extraction pipeline includes a cross pipe and a connecting pipe. The cross pipe is buried in the mud hopper and the output end extends out of the mud-slip slope of the mud hopper.

[0012] As a further improvement of the above technical solution, a filler rack is provided on the top of the mud hopper, and an air supply pipe is provided inside the mud hopper. One end of the air supply pipe extends out of the top of the mud hopper and is connected to the aeration pipe, and the other end is connected to the exhaust fan on the top of the pool body.

[0013] As a further improvement of the above technical solution, the filler rack includes a chassis, a plurality of hanging rods vertically arranged on the chassis, and fillers arranged on the hanging rods.

[0014] As a further improvement of the above technical solution, a rotating shaft extending downward is fixedly provided at the center of the bottom surface of the chassis, and the rotating shaft is rotatably connected to the top of the mud bucket.

[0015] As a further improvement of the above technical solution, blades are further provided on the circumferential surface of the chassis.

[0016] As a further improvement of the above technical solution, a reduction motor is provided in the mud hopper, a first gear is sleeved on the output shaft of the reduction motor, a second gear is sleeved on the rotating shaft, and the first gear and the second gear are engaged for transmission.

[0017] As a further improvement of the above technical solution, the water inlet pipe includes a water inlet main pipe and multiple water inlet branch pipes connected to the water inlet main pipe, the water inlet branch pipes are arranged at intervals along the width direction of the flow channel, each of the water inlet branch pipes extends into the pool body and is provided with a gate valve; the water outlet pipe includes a water outlet main pipe and multiple water outlet branch pipes connected to the water outlet main pipe, the water outlet branch pipes are arranged at intervals along the width direction of the flow channel, each of the water outlet branch pipes extends into the pool body and is provided with a gate valve, and the number of the water inlet branch pipes is the same as the number of the water outlet branch pipes.

[0018] As a further improvement of the above technical solution, an inspection door is provided on the side wall of the pool body.

[0019] Advantages of the present utility model: Compared with traditional leachate regulating ponds, due to the flat bottom or insufficient slope of the pond, silt is easily dispersed and deposited in various areas at the bottom of the pond, resulting in a rapid reduction of the effective volume. The leachate regulating pond provided by the present utility model has a sludge sliding slope that centrally guides the settled silt to the sludge accumulation hopper area at the bottom of the pond, avoiding the diffusion and accumulation of silt in other positions at the bottom of the pond, effectively maintaining the effective volume of the regulating pond, and extending the service life of its water quality and quantity regulation function. Most of the silt in the pond is concentrated in the sludge accumulation hopper area. Through the sludge extraction pipelines independently configured for each sludge accumulation hopper, precise suction can be directly performed on the bottom of the sludge accumulation hopper. Description of the Drawings

[0020] Figure 1 It is a top view of the leachate regulating pond provided by the present utility model, and the arrow direction in the figure represents the water flow direction.

[0021] Figure 2 It is a three-dimensional view of the first type of rotatable packing rack arranged on the top of the sludge accumulation hopper.

[0022] Figure 3 It is a schematic internal structure diagram of the first type of rotatable packing rack arranged on the top of the sludge accumulation hopper.

[0023] Figure 4 It is a three-dimensional view of the second type of rotatable packing rack arranged on the top of the sludge accumulation hopper.

[0024] Figure 5 It is a schematic internal structure diagram of the second type of rotatable packing rack arranged on the top of the sludge accumulation hopper.

[0025] Main element symbol description: 1 - pond body, 10 - U-shaped flow channel, 11 - partition wall, 12 - pond bottom, 2 - sludge accumulation hopper, 21 - sludge sliding slope, 3 - inlet pipeline, 31 - inlet main pipe, 32 - inlet branch pipe, 4 - outlet pipeline, 41 - outlet main pipe, 42 - outlet branch pipe, 5 - sludge extraction pipeline, 51 - cross pipe, 52 - connecting pipe, 53 - screw pump, 6 - packing rack, 61 - chassis, 62 - hanging rod, 63 - rotating shaft, 71 - aeration pipe, 72 - air supply pipe, 80 - paddle, 81 - reduction motor, 82 - first gear, 83 - second gear, 84 - fixing frame, 85 - bearing, 86 - waterproof shell, 9 - inspection door. Detailed Implementation Modes

[0026] The present utility model provides a leachate regulating pond. To make the purpose, technical solution and effects of the present utility model clearer and more definite, the following further elaborates on the present utility model with reference to the attached drawings and by way of examples. It should be understood that the specific examples described herein are only used to explain the present utility model and are not used to limit the protection scope of the present utility model.

[0027] Please refer to Figures 1 to 5, the present utility model provides a garbage leachate regulating tank, which includes a tank body 1 having a U-shaped flow channel 10 and a plurality of sludge hoppers 2 arranged along the path direction of the U-shaped flow channel 10. The tank body 1 is provided with an inlet pipe 3 at the inlet end of the U-shaped flow channel 10, and the tank body 1 is provided with an outlet pipe 4 at the outlet end of the U-shaped flow channel 10. A sludge sliding slope 21 for guiding the sludge to slide down to the bottom of the tank body 1 is formed on the side surface of the sludge hopper 2. Each sludge hopper 2 is configured with a sludge extraction pipe 5 for extracting the sludge around the sludge hopper 2, and the sludge extraction pipe 5 extends outside the tank body 1 and is connected to a screw pump 53.

[0028] In fact, in order to form a U-shaped flow channel 10 inside the tank body 1, partition walls 11 will be provided inside the tank body 1. After the garbage leachate enters the tank body 1 through the inlet pipe 3, it flows towards the outlet pipe 4 in a U-shaped path. It can be understood that the water level in the tank will be much higher than the height of the sludge hopper 2, and the sludge hopper 2 will not hinder the normal flow of water.

[0029] The working principle of this garbage leachate regulating tank is as follows: When the garbage leachate enters the tank body 1 through the inlet pipe 3, the water flow flows along the path of the U-shaped flow channel 10, extending the residence time of the leachate in the tank and optimizing the flow pattern. During the flow process, the suspended solids in the leachate (including organic and inorganic particles, metabolites produced by the proliferation of anaerobic microorganisms, etc.) gradually settle due to gravity. Since a plurality of sludge hoppers 2 are arranged along the flow path direction of the tank bottom 12, and a sludge sliding slope 21 (usually with a slope greater than 45°) is formed on the side surface of each sludge hopper 2, the settled sludge will automatically slide down along the sludge sliding slope 21 to the bottom of the sludge hopper 2 under the action of gravity. Therefore, the sludge finally accumulates concentratedly in the area of the sludge hopper 2 at the bottom of the tank 12, rather than being dispersed and deposited at other positions on the bottom of the tank 12.

[0030] When the sludge in the area of the sludge hopper 2 accumulates to a certain amount, the sludge extraction pipe 5 corresponding to the sludge hopper 2 is started by an external screw pump 53, and the highly viscous sludge is directly extracted from the bottom of the sludge hopper 2 (this concentrated sludge accumulation area at the bottom of the tank 12) and pumped to subsequent treatment units such as a sludge thickening tank to achieve regular sludge cleaning. The design of the U-shaped flow channel 10 can also reduce the short-circuit flow and dead angle phenomena of the water flow in the tank, make the suspended solids settle more evenly and be captured by the sludge hopper 2, and further improve the sludge cleaning efficiency.

[0031] Compared with traditional leachate regulating ponds, due to the flat bottom 12 or insufficient slope, silt is easily dispersed and deposited in various areas of the bottom 12 of the pond, resulting in a rapid reduction in the effective volume. The leachate regulating pond provided by the present utility model has a sludge sliding slope 21 that centrally guides the settled silt to the sedimentation hopper 2 area at the bottom 12 of the pond (the bottom of the sedimentation hopper 2 is flush with the bottom 12 of the pond), avoiding the diffusion and accumulation of silt in other positions at the bottom 12 of the pond, effectively maintaining the effective volume of the regulating pond, and extending the service life of its water quality and quantity regulation function. The sedimentation hopper 2 area concentrates most of the silt in the pond. Through the sludge extraction pipelines 5 independently configured for each sedimentation hopper 2, precise suction can be directly carried out on the bottom of the sedimentation hopper 2 (the centralized silt accumulation area at the bottom 12 of the pond).

[0032] In this embodiment, the sedimentation hopper 2 is frustum-shaped, specifically it can be a quadrangular frustum or a conical frustum. The frustum-shaped sedimentation hopper 2 has a structure with a small top and a large bottom, forming a sludge sliding slope 21 that slopes outward. When the suspended solids in the leachate settle, the silt can quickly and smoothly slide down along the inclined sludge sliding slope 21 under the action of gravity to the bottom of the sedimentation hopper 2, effectively avoiding the large-scale scattered diffusion and accumulation of silt at the bottom 12 of the pond. Whether it is the regular inclined surface of the quadrangular frustum or the continuous and smooth curved surface of the conical frustum, both can provide a stable guiding path for the silt, enabling the silt to be centrally collected at the bottom of the sedimentation hopper 2 for easy cleaning. The sludge extraction pipeline 5 is arranged close to the bottom of the sedimentation hopper 2, and can directly aim at the area with the highest silt concentration and the largest accumulation volume, effectively reducing the difficulty of silt cleaning and saving the energy consumption for silt cleaning.

[0033] It can be understood that the outer contour of the frustum-shaped sedimentation hopper 2 is smooth, and the interference to the water flow in the regulating pond is small. The shape with a small top and a large bottom enables the water flow to bypass more smoothly when passing through the sedimentation hopper 2, reducing the formation of eddies and dead corners, helping to maintain the uniformity of the water flow, promoting the full mixing of the leachate, enhancing the water quality homogenization effect, and providing more stable and high-quality influent conditions for the subsequent treatment process.

[0034] Specifically, the sludge extraction pipeline 5 includes a cross pipe 51 and a connecting pipe 52. The cross pipe 51 is buried in the sedimentation hopper 2 and its output end extends out of the sludge sliding slope 21 of the sedimentation hopper 2. The four branches of the cross pipe 51 can extend to different areas at the bottom of the sedimentation hopper 2. Compared with a single sludge extraction pipeline 5, it can achieve all-round coverage extraction of the silt located outside the sedimentation hopper 2. Even if the silt is unevenly distributed around the sedimentation hopper 2, the cross pipe 51 can extract from multiple directions, avoiding the emergence of sludge extraction blind spots, ensuring that the silt outside the sedimentation hopper 2 is cleared as clean as possible, and enhancing the thoroughness of silt cleaning.

[0035] To stabilize the water quality treatment effect, degrade the organic matter in the leachate in advance, and reduce the load of downstream treatment, see Figures 2 to 5As shown, a packing rack 6 is provided at the top of the sludge hopper 2. An air supply pipe 72 is arranged inside the sludge hopper 2. One end of the air supply pipe 72 extends out of the top of the sludge hopper 2 and is connected to an aeration pipe 71, and the other end is connected to an exhaust fan at the top of the pool body. The packing rack 6 can be used to install packing, providing a carrier for microorganisms to attach and grow, and forming an anaerobic biofilm. During the operation of the landfill leachate regulating pool, anaerobic reaction occurs in the pool to generate biogas. After the exhaust fan is started, the biogas generated in the pool body is extracted through the air supply pipe. The extracted biogas is transported to the aeration pipe 71 and discharged from the outlet of the aeration pipe 71. During the discharge process, the biogas disturbs the anaerobic granular activated sludge and landfill leachate outside the sludge hopper, causing the anaerobic granular activated sludge and landfill leachate to be fully mixed and collide with each other, greatly increasing the contact area between the two. At the same time, microorganisms attached to the packing rack provided at the top of the sludge hopper form an anaerobic biofilm. Under the action of bubbles generated by the biogas disturbance, the sewage is in full contact with the anaerobic biofilm, and the microorganisms on the anaerobic biofilm also participate in the degradation process of the leachate pollutants. Due to the continuous disturbance of the biogas, the anaerobic granular activated sludge is always in a suspended and moving state, avoiding its deposition at the bottom of the sludge hopper and ensuring that the anaerobic reaction can proceed continuously and efficiently.

[0036] Specifically, the packing rack 6 includes a chassis 61, a plurality of hanging rods 62 vertically arranged on the chassis 61, and packing (such as a combination of fiber bundles and plastic rings) arranged on the hanging rods 62. The chassis 61 serves as a support foundation, providing a stable installation platform for the plurality of hanging rods 62, ensuring that the packing rack 6 is firmly arranged inside the sludge hopper 2. The vertically distributed hanging rods 62 can make full use of the three-dimensional space inside the pool body 1. Compared with the planar packing arrangement, the installation quantity and specific surface area of the packing can be significantly increased, providing a richer attachment carrier for microorganisms. After a large number of microorganisms attach to the surface of the packing to form an anaerobic biofilm, the contact area with the landfill leachate can be effectively enlarged, improving the degradation efficiency of microorganisms on pollutants such as organic matter in the leachate and further optimizing the effluent quality.

[0037] Furthermore, a rotating shaft 63 extending downward is fixedly provided at the center of the bottom surface of the chassis 61, and the rotating shaft 63 is rotatably connected to the top of the sludge hopper 2. The rotation of the packing rack 6 continuously changes the contact angle and position between the packing surface and the leachate. On the one hand, it can accelerate the shedding of the aging part on the surface of the anaerobic biofilm, creating space for the attachment and growth of new microorganisms, promoting the renewal of the anaerobic biofilm, and maintaining the activity and degradation ability of microorganisms. On the other hand, the water flow scouring at different angles helps microorganisms obtain more uniform nutrients, optimizing the microbial metabolic environment, further improving the degradation efficiency of pollutants in the leachate, reducing indicators such as chemical oxygen demand and ammonia nitrogen, and improving the effluent quality.

[0038] In one embodiment, see Figure 4 and Figure 5As shown, blades 80 are also provided on the circumferential surface of the chassis 61. Without the need for an additional power device, the natural flow of water can drive the rotation of the blades 80. The continuous rotation of the blades 80 promotes the formation of complex circulation and eddy currents in the pool, which can more efficiently increase the contact frequency and contact area between pollutants and anaerobic biofilm and anaerobic granular activated sludge.

[0039] In another embodiment, as shown in Figure 2 and Figure 3 As shown, a reduction motor 81 is provided in the sludge hopper 2. A first gear 82 is sleeved on the output shaft of the reduction motor 81, and a second gear 83 is sleeved on the rotating shaft 63. The first gear 82 and the second gear 83 are engaged for transmission. The reduction motor 81 can flexibly adjust the rotation speed according to actual needs, accurately control the rotation speed of the packing rack 6, and can better adapt to different working conditions compared with the uncontrollability of water flow drive. For example, during the dredging operation, the motor speed can be increased to drive the packing rack 6 to rotate quickly, enhancing the scouring and peeling effect on the sludge; during the water purification stage, the speed is reduced to enable the leachate to fully contact the biofilm while avoiding excessive disturbance. In addition, the motor can also achieve forward and reverse rotation control to further optimize the stirring effect on the sludge and water flow outside the sludge hopper 2.

[0040] Actually, a fixed frame 84 will be provided inside the sludge hopper 2. The rotating shaft 63 is rotatably connected to the fixed frame 84 through a bearing 85. The bearing 85 and the reduction motor 81 and related structures will be wrapped by a waterproof shell 86. The wires of the reduction motor 81 are led out of the pool body 1. The sludge hopper 2 is built in a conical shape by filling the fixed frame 84 with cement.

[0041] In the traditional regulating pool, the way of single-side single-pipe water inlet and multi-pump water pumping is likely to cause the water flow to concentrate and impact local areas, resulting in short-circuiting or dead angles. Therefore, in this embodiment, the water inlet pipe 3 includes a water inlet main pipe 31 and a plurality of water inlet branch pipes 32 connected to the water inlet main pipe 31. The water inlet branch pipes 32 are arranged at intervals along the width direction of the flow channel. The leachate enters the pool body 1 through multiple branch pipes, enabling the water flow to evenly cover the entire cross-section of the flow channel. The water outlet pipe 4 includes a water outlet main pipe 41 and a plurality of water outlet branch pipes 42 connected to the water outlet main pipe 41. The water outlet branch pipes 42 are arranged at intervals along the width direction of the flow channel to ensure that the water flow in each area is discharged synchronously during the water outlet process. The number of the water inlet branch pipes 32 is the same as the number of the water outlet branch pipes 42. Through uniform water distribution, the suspended solids in the leachate are evenly stressed in the pool, reducing the sludge accumulation caused by uneven water flow scouring force. At the same time, the stable water flow helps to direct the sludge to the sludge hopper 2. Cooperating with the dredging pipe 5 and the screw pump 53, the sludge can be removed more efficiently.

[0042] Each of the water inlet branch pipes 32 extends into the tank body 1 and is provided with a gate valve; each of the water outlet branch pipes 42 extends into the tank body 1 and is provided with a gate valve. The gate valves on each water inlet branch pipe 32 and water outlet branch pipe 42 can be flexibly adjusted according to the actual working conditions to control the water flow rate in each area, further enhancing the mixing effect. For example, when the influent water quality fluctuates, the water in the high-concentration area and the low-concentration area can be fully blended by adjusting the gate valve, quickly achieving water quality homogenization, reducing the pollutant concentration gradient, avoiding the influence of poor local water quality on the stability of the subsequent treatment process, and providing stable influent water quality for the downstream treatment unit.

[0043] Equipment such as the sludge hopper 2, sludge pumping pipeline 5, air supply pipe 72, and packing rack 6 inside the regulating tank are in the complex environment of landfill leachate for a long time, and problems such as blockage, corrosion, and damage may occur. Therefore, a maintenance door 9 is provided on the side wall of the tank body 1. Not only can the sewage discharge pipe of the dredging vehicle be put into the tank through the maintenance door 9 for dredging, but during the dredging process, the maintenance door 9 can be used as an auxiliary passage to facilitate the staff to carry tools into the tank to manually clean the sludge in the dead corner area, making up for the deficiency of mechanical dredging. At the same time, the staff can observe the dredging progress and effect in real time through the maintenance door 9, adjust the dredging strategy in time, ensure that the sludge is completely cleared, prevent problems such as the reduction of the effective volume of the regulating tank and water quality deterioration caused by sludge residue, and further improve the dredging efficiency and quality.

[0044] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0045] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0046] It is understandable that those of ordinary skill in the art can make equivalent substitutions or changes based on the technical solution of the present utility model and its inventive concept, and all such changes or substitutions should fall within the protection scope of the present utility model.

Claims

1. A leachate regulating pond, characterized in that, It includes a pool body with a 匚-shaped flow channel and multiple mud buckets arranged along the path direction of the 匚-shaped flow channel. The pool body is provided with an inlet pipe at the water inlet end of the 匚-shaped flow channel, and the pool body is provided with an outlet pipe at the water outlet end of the 匚-shaped flow channel. The side of the mud bucket forms a mud sliding slope for guiding the silt to slide down to the bottom of the pool body. Each mud bucket is equipped with a silt extraction pipe for extracting the silt around the mud bucket. The silt extraction pipe extends out of the pool body and is connected to a screw pump.

2. The leachate regulating pond according to claim 1, wherein The mud hopper is in the shape of a frustum.

3. The leachate regulating pond according to claim 1, wherein, The silt extraction pipeline comprises a cross pipe and a connecting pipe. The cross pipe is buried in the sludge hopper and the output end thereof extends out of the sludge-slip slope of the sludge hopper.

4. The leachate regulating pond according to claim 2 or 3, characterized in that, A filling rack is provided on the top of the mud hopper, and an air supply pipe is provided inside the mud hopper. One end of the air supply pipe extends out of the top of the mud hopper and is connected to the aeration pipe, and the other end is connected to the exhaust fan on the top of the pool body.

5. The leachate regulating pond according to claim 4, wherein, The filling frame comprises a chassis, a plurality of hanging rods vertically arranged on the chassis, and fillers arranged on the hanging rods.

6. The leachate regulating pond according to claim 5, characterized in that, A rotating shaft extending downward is fixedly provided at the center of the bottom surface of the chassis, and the rotating shaft is rotatably connected to the top of the mud hopper.

7. The leachate regulating pond according to claim 6, wherein Paddle blades are also provided on the circumferential surface of the chassis.

8. The leachate regulating pond according to claim 6, wherein, A reduction motor is provided in the mud hopper, a first gear is sleeved on the output shaft of the reduction motor, a second gear is sleeved on the rotating shaft, and the first gear and the second gear are meshed for transmission.

9. The leachate regulating pond according to claim 1, wherein, The water inlet pipe includes a main water inlet pipe and multiple water inlet branch pipes connected to the main water inlet pipe, and the water inlet branch pipes are arranged at intervals along the width direction of the flow channel, and each of the water inlet branch pipes extends into the pool body and is provided with a gate valve; the water outlet pipe includes a main water outlet pipe and multiple water outlet branch pipes connected to the main water outlet pipe, and the water outlet branch pipes are arranged at intervals along the width direction of the flow channel, and each of the water outlet branch pipes extends into the pool body and is provided with a gate valve, and the number of the water inlet branch pipes is the same as the number of the water outlet branch pipes.

10. The leachate regulating pond according to claim 1, wherein An inspection door is provided on the side wall of the pool body.

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