A biological treatment device for landfill leachate

Abstract

This application relates to a biological treatment device for landfill leachate, which relates to the technical field of waste treatment. It includes a treatment tank. One end of the treatment tank is provided with a liquid inlet, and the other end is provided with a liquid outlet. A plurality of active biological filler modules are arranged in the treatment tank. Each active biological filler module is connected to the treatment tank through a connection unit. The plurality of active biological filler modules are arranged at intervals along the flow direction of the leachate, and the treatment tank is divided into a plurality of treatment areas. It further includes an oxygenation mechanism, which is used to oxygenate the leachate upstream of each active biological filler module. A detection unit for detecting leachate parameters is arranged in each treatment area. This application has the effect of modularizing the entire active biological filler, improving the utilization rate of the active biological filler, and reducing the waste of the active biological filler.

Description

Technical Field

[0001] This application relates to the technical field of garbage treatment, and particularly relates to a biological treatment device for garbage leachate. Background Art

[0002] Garbage leachate is a liquid with a high concentration of organic or inorganic components generated during the stacking and landfill of garbage due to biochemical degradation effects such as compaction and fermentation, and at the same time under the seepage action of precipitation and groundwater. The composition of garbage leachate is complex, containing a large amount of ammonia nitrogen, heavy metals, and organic substances, etc., and it is necessary to treat the garbage leachate.

[0003] In the existing treatment method of garbage leachate, the garbage leachate is introduced into a treatment tank, and the garbage leachate is treated by the activated biological filler in the treatment tank. When replacing the activated biological filler, due to the different treatment loads of the organisms at the front end and the back end of the activated biological filler, the organisms at the front end of the activated biological filler are inactivated, while the organisms at the back end are still active. Therefore, replacing the entire activated biological filler as a whole will cause a great waste of the activated biological filler. Summary of the Invention

[0004] In order to improve the problem that replacing the entire activated biological filler as a whole will cause a great waste of the activated biological filler, this application provides a biological treatment device for garbage leachate.

[0005] A biological treatment device for garbage leachate provided by this application adopts the following technical solutions:

[0006] A biological treatment device for garbage leachate includes a treatment tank. One end of the treatment tank is provided with a liquid inlet, and the other end is provided with a liquid outlet. A plurality of activated biological filler modules are arranged in the treatment tank. Each activated biological filler module is connected to the treatment tank through a connection unit. The plurality of activated biological filler modules are arranged at intervals along the flow direction of the leachate, and the treatment tank is divided into a plurality of treatment areas;

[0007] It further includes an oxygenation mechanism for oxygenating the leachate upstream of each activated biological filler module, and a detection unit for detecting leachate parameters is arranged in each treatment area.

[0008] By adopting the above technical scheme, when treating the landfill leachate, the landfill leachate is introduced into the treatment tank through the liquid inlet, and then the landfill leachate flows through multiple active biological filler modules in the treatment tank in sequence, and the active biological filler modules purify the landfill leachate. The landfill leachate is oxygenated by the oxygenation mechanism, which can improve the activity of aerobic bacteria in the active biological filler modules and accelerate the purification of the landfill leachate. The parameters of the landfill leachate in each treatment area are detected by the detection unit, and it can be determined that there is a problem with the active biological filler module in a certain treatment area, and then the active biological filler module is replaced, thereby avoiding the replacement of the entire active biological filler. The entire active biological filler is modularized, which can improve the utilization rate of the active biological filler and reduce the waste of the active biological filler.

[0009] In a specific possible implementation manner, the active biological filler module comprises a frame body and a filler body, a mounting groove is provided in the processing area, and a mounting surface is provided on a side of the active biological filler module away from the downstream;

[0010] The connecting unit includes a fastener, a disassembly member and a control member, wherein the fastener is used to press the frame against the mounting surface, the disassembly member is used to drive the fastener to be separated from the frame, and the control member is used to control the fastener to press the frame against the mounting surface.

[0011] By adopting the above technical solution, when installing the active biological filler module, the active biological filler module is inserted into the installation groove and fits on the installation surface, and then the control component controls the fastener to press the frame against the installation surface to complete the installation of the active biological filler module. When disassembling and replacing the active biological filler module, the active biological filler module is pulled up, and the fastener is released from the frame through the disassembly component, thereby improving the convenience of disassembling, assembling and replacing the active biological filler module.

[0012] In a specific feasible implementation scheme, the fastener includes a rotating cylinder and a torsion spring. A fastening groove is opened on the side wall of the mounting groove. The rotating cylinder is rotatably arranged in the fastening groove along the vertical direction. A tightening portion is provided on the rotating cylinder. The rotating cylinder can drive the tightening portion to rotate to the side of the frame away from the mounting surface and press the frame against the mounting surface. The torsion spring is arranged on the rotating cylinder, and one end is fixed to the rotating cylinder, and the other end is fixed to the treatment tank, and is used to press the frame against the mounting surface.

[0013] By adopting the above technical solution, when installing the active biological filler module, the torsion spring pushes the rotating cylinder to rotate, and the rotating cylinder drives the pressing part to rotate out of the fastening groove and press the frame against the installation surface to install the active biological filler module.

[0014] In a specific feasible implementation scheme, the disassembly part includes a driving rod and a driving block. The driving rod is slidably arranged in the pool wall of the treatment pool along the vertical direction. The driving block is slidably arranged on the driving rod and can drive the driving rod to slide up and down. One end of the driving block extends to the top of the frame. The driving rod drives the rotating cylinder to rotate through a transmission member, so that the tightening part is disengaged from the frame.

[0015] By adopting the above technical solution, when disassembling the active biological filler module, the active biological filler module is first pulled up, and the active biological filler module pushes the driving block to drive the driving rod to move upward, and then the driving rod drives the rotating cylinder to rotate through the transmission member, and the rotating cylinder drives the pressing part to separate from the frame, which can avoid the pressing part always pressing against the frame during the extraction process of the active biological filler module, thereby improving the convenience of disassembling the active biological filler module.

[0016] In a specific feasible implementation mode, the transmission member includes a spur gear, a first bevel gear, and a second bevel gear. The driving rod is provided with a driving rack along its length direction. The spur gear is coaxially fixedly connected with the first bevel gear and is rotatably arranged with the treatment pool. The spur gear is meshed with the driving rack. The second bevel gear is rotatably arranged with the treatment pool and drives the rotating cylinder to rotate. The first bevel gear is meshed with the second bevel gear. When the driving rod slides upward, the pressing portion moves away from the frame.

[0017] By adopting the above technical solution, when the driving rod slides, the driving rod drives the spur gear to rotate through the driving rack, the spur gear drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, and the second bevel gear drives the rotating cylinder to rotate, thereby realizing transmission between the driving rod and the rotating cylinder.

[0018] In a specific possible implementation scheme, a guide surface is provided on the driving block, and a clearance groove is provided in the processing tank. When the abutting portion rotates into the fastening groove, the frame squeezes the guide surface so that the driving block is inserted into the clearance groove and the driving block is detached from the frame.

[0019] By adopting the above technical solution, as the active biological filler module moves upward, when the tightening part is completely turned into the fastening groove, the driving block slides to the clearance groove, and then the frame slides along the guide surface and pushes the driving block into the clearance groove, so that the driving block is separated from the frame, thereby reducing the load on the active biological filler module and facilitating the disassembly of the active biological filler module.

[0020] In a specific possible implementation scheme, the control member includes a control rod, one end of the control rod extends out of the mounting surface, and the other end extends to the driving rod, and the driving rod is provided with a slot for inserting the control rod. The control rod is inserted into the slot, so that the abutting portion can be confined in the fastening groove, and the frame can squeeze the control rod so that the control rod can be pulled out of the slot.

[0021] By adopting the above technical solution, when the pressing part is rotated into the fastening groove, the control rod is inserted into the slot to limit the sliding of the driving rod, so that the stability of the driving block and the frame can be improved, and at the same time, the rotation of the rotating cylinder can be limited, so that the pressing part can be more stably stopped in the fastening groove; when the frame of the replaced active biological filler module is attached to the installation surface, the frame squeezes the control rod to slide, and the control rod is pulled out of the slot to contact the restriction of the driving rod. At this time, the torsion spring pushes the rotating cylinder to rotate, and the rotating cylinder drives the pressing part to press the frame against the installation surface, thereby improving the convenience of replacing and installing the active biological filler module.

[0022] In a specific possible implementation manner, a push rod is slidably provided at the bottom of the processing area, and the push rod can push the frame of the spare active biological filler module against the mounting surface.

[0023] By adopting the above technical solution, when replacing the active biological filler module, first insert the new active biological filler module into the installation groove, and then remove the old active biological filler module. At this time, the landfill leachate flows through the new active biological filler module, and then the active biological filler module is pushed to fit the installation surface by the push rod, so that when replacing the active biological filler module, there is no need to stop the flow of landfill leachate, thereby improving the convenience of replacing the active biological filler module.

[0024] In a specific embodiment, the ends of the ventilation tubes correspond one-to-one to the active biological filler modules, one end of the ventilation tubes is connected to the outlet of the aerator, and the end of each ventilation tube is inserted into the leachate upstream of the active biological filler module.

[0025] By adopting the above technical solution, the aerator supplies oxygen to the upstream of each active biological filler module through the ventilation pipe, thereby improving the activity of aerobic bacteria in the active biological filler module and improving the efficiency of purifying landfill leachate.

[0026] In a specific embodiment, the detection unit includes a cod detector.

[0027] By adopting the above technical solution, the landfill leachate is tested by a COD detector, thereby improving the convenience of landfill leachate testing.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. When treating landfill leachate, the landfill leachate is introduced into the treatment tank through the liquid inlet, and then the landfill leachate flows through multiple activated biological filler modules in sequence in the treatment tank. The activated biological filler modules purify the landfill leachate. When a certain activated biological filler module becomes inactivated, the corresponding activated biological filler module is replaced, so as to avoid replacing the entire activated biological filler. Modularizing the entire activated biological filler can improve the utilization rate of the activated biological filler and reduce the waste of the activated biological filler;

[0030] 2. The aerator aerates the leachate in front of each activated biological filler module through the air pipe, which can improve the activity of aerobic bacteria in the activated biological filler module and accelerate the purification of the landfill leachate;

[0031] 3. The parameters of the landfill leachate in each treatment area can be detected by the COD detector, which can quickly judge that there is a problem with the activated biological filler module in a certain treatment area, and then replace the activated biological filler module. Brief Description of the Drawings

[0032] Figure 1 is a schematic structural diagram of a biological treatment device for landfill leachate according to an embodiment of the present application.

[0033] Figure 2 is a schematic structural diagram for showing the activated biological filler module.

[0034] Figure 3 is along Figure 2 the sectional view taken along line A-A in

[0035] Figure 4 is along Figure 2 the sectional view taken along line B-B in

[0036] Figure 5 is Figure 4 the enlarged view of part C in

[0037] Figure 6 is along Figure 2 the sectional view taken along line D-D in

[0038] Figure 7 is a schematic structural diagram for showing the slot.

[0039] Figure 8 is a schematic structural diagram for showing the push rod.

[0040] Description of the reference numerals: 1. treatment tank; 11. liquid inlet; 12. liquid outlet; 13. installation groove; 14. treatment area; 15. installation surface; 2. active biological filler module; 21. frame body; 22. filler body; 3. connection unit; 31. fastener; 311. rotating cylinder; 312. torsion spring; 313. fastening groove; 314. abutting portion; 32. disassembly part; 321. driving rod; 322. driving block; 323. sliding cavity; 324. strip-shaped hole; 325. guiding surface; 326. relief groove; 327. push plate; 328. telescopic spring; 329. driving rack; 33. control part; 331. control rod; 332. control cavity; 333. slot; 334. control spring; 34. transmission part; 341. spur gear; 342. first bevel gear; 343. second bevel gear; 344. gear shaft; 4. detection unit; 41. cod detector; 5. aeration mechanism; 51. aerator; 52. ventilation pipe; 6. push rod. Detailed implementation manners

[0041] The following is further described in detail with reference to the Figure 1-8 accompanying drawings to this application.

[0042] An embodiment of this application discloses a biological treatment device for landfill leachate.

[0043] Referring to Figure 1 , a biological treatment device for landfill leachate includes a treatment tank 1. The treatment tank 1 is in a long strip shape. A liquid inlet 11 and a liquid outlet 12 are respectively provided at the two farthest ends of the treatment tank 1, so that the landfill leachate can flow along the length direction of the treatment tank 1. A plurality of installation grooves 13 are formed in the pool wall of the treatment tank 1. The installation grooves 13 are located on the two side walls and the bottom wall of the treatment tank 1. An active biological filler module 2 is provided in each installation groove 13 of the treatment tank 1. The plurality of active biological filler modules 2 divide the treatment tank 1 into a plurality of treatment areas 14. The treatment areas 14 are located downstream of adjacent active biological filler modules 2. Each active biological filler module 2 is connected to the treatment tank 1 through a connection unit 3. A detection unit 4 is provided in each treatment area 14. The detection unit 4 in this embodiment is a cod detector 41. The cod value in the water is detected by the cod detector 41 to judge the treatment status of the landfill leachate.

[0044] When treating landfill leachate, the landfill leachate is introduced into the treatment tank 1 through the liquid inlet 11, and then the landfill leachate flows through a plurality of activated biological filler modules 2 in sequence in the treatment tank 1. The activated biological filler modules 2 purify the landfill leachate, and then the purification degree of the landfill leachate passing through each activated biological filler module 2 is detected by the COD detector 41. When the COD detector 41 detects that the COD value of the landfill leachate in the treatment area 14 is abnormal, the activated biological filler module 2 in this treatment area 14 is replaced, so as to avoid replacing the entire activated biological filler. Modularizing the entire activated biological filler can improve the utilization rate of the activated biological filler and reduce the waste of the activated biological filler.

[0045] Refer to Figure 1 , an oxygenation mechanism 5 is provided on the treatment tank 1. The oxygenation mechanism 5 in this embodiment includes an oxygenator 51 and an air pipe 52. The air pipe 52 corresponds to the activated biological filler module 2 one by one. A plurality of end heads are provided on the air pipe 52, and the end heads correspond to the activated biological filler module 2 one by one. The end heads extend to the upstream of the activated biological filler module 2 and are inserted into the landfill leachate. Oxygenating the landfill leachate through the oxygenation mechanism 5 can improve the activity of aerobic bacteria in the activated biological filler module 2, accelerate the purification of the landfill leachate, and improve the purification efficiency of the landfill leachate.

[0046] Refer to Figure 2 , the activated biological filler module 2 includes a frame body 21 and a filler body 22. The width of the filler body 22 is the same as the width of the treatment tank 1, and the height is less than the height of the treatment tank 1. The frame body 21 is a rectangular frame and is arranged around the filler body 22. Each installation groove 13 is provided with an installation surface 15 on the side far from the liquid outlet 12. The frame body 21 can be attached to the installation surface 15. The connection unit 3 in this embodiment includes a fastener 31 (such as Figure 3 ), a disassembly part 32 (such as Figure 4 ), and a control part 33 (such as Figure 6 ).

[0047] Refer to Figure 2 , Figure 3 , the fastener 31 in this embodiment includes a rotating cylinder 311 and a torsion spring 312. Fastening grooves 313 are formed on the opposite side walls of the installation groove 13. The two fastening grooves 313 are arranged opposite to each other. The rotating cylinder 311 corresponds to the fastening groove 313 one by one and is located in the fastening groove 313. The rotating cylinder 311 is arranged along the vertical direction and is rotatably connected to the treatment tank 1 through a rotating shaft. The torsion spring 312 is sleeved on the rotating shaft. One end of the torsion spring 312 is fixedly connected to the treatment tank 1, and the other end is fixedly connected to the rotating cylinder 311. The rotating cylinder 311 is provided with a pressing part 314 along its axial direction. The pressing part 314 can press the frame body 21 against the installation surface 15 and can rotate and shrink into the fastening groove 313.

[0048] Reference Figure 4 、 Figure 5 In this embodiment, the disassembling member 32 includes a driving rod 321 and a driving block 322. A sliding cavity 323 is provided on the side wall of the treatment tank 1 along the vertical direction. The driving rod 321 is slidably arranged in the sliding cavity 323. A strip-shaped hole 324 along the vertical direction is formed on the side wall of the fastening groove 313. The driving block 322 passes through the driving rod 321 along the horizontal direction and is slidably connected to the driving rod 321. One end of the driving block 322 passes through the strip-shaped hole 324 and extends above the frame 21. A guiding surface 325 is provided at one end of the driving block 322 extending above the frame 21. The guiding surface 325 is arranged on the side of the driving block 322 facing the frame 21. The guiding surface 325 is inclined upward from the extending direction of the driving block 322. A horizontally arranged relief groove 326 is formed on the side of the sliding cavity 323 away from the frame 21. The driving block 322 can be inserted into the relief groove 326. When the driving block 322 stops inserting into the relief groove 326, the driving block 322 can be disengaged from the frame 21. A push plate 327 is slidably arranged in the relief groove 326. A telescopic spring 328 is provided between the push plate 327 and the bottom wall of the relief groove 326. One end of the telescopic spring 328 is fixed to the bottom wall of the relief groove 326, and the other end is fixedly connected to the push plate 327. The telescopic spring 328 is used to push the driving block 322 out of the relief groove 326. A driving rack 329 is fixedly arranged on the driving rod 321 along its own length direction.

[0049] Reference Figure 3 、 Figure 4 The driving rod 321 is connected to the rotating cylinder 311 through a transmission member 34. The transmission member 34 in this embodiment includes a spur gear 341, a first bevel gear 342, and a second bevel gear 343. A gear shaft 344 is coaxially and fixedly arranged on the spur gear 341 and the first bevel gear 342. The gear shaft 344 is rotatably connected to the side wall of the treatment tank 1 along the horizontal direction. The spur gear 341 meshes with the driving rack 329. The second bevel gear 343 is coaxially and fixedly arranged with the rotating shaft on the rotating cylinder 311. The first bevel gear 342 meshes with the second bevel gear 343. When the frame 21 pushes the driving block 322 to slide upward, the rotating cylinder 311 drives the abutting portion 314 to rotate away from the frame 21 and finally rotate into the fastening groove 313. When the abutting portion 314 completely rotates into the fastening groove 313, the frame 21 inserts the driving block 322 into the relief groove 326 through the guiding surface 325.

[0050] Reference Figure 6 、 Figure 7, in this embodiment, the control member 33 includes a control rod 331. A control cavity 332 for the control rod 331 to slide in the horizontal direction is formed in the side wall of the treatment tank 1. The control rod 331 is in a U shape. One end of the control rod 331 extends out from the installation surface 15, and the other end extends to the driving rod 321. A slot 333 is provided on the driving rod 321 along the horizontal direction. One end of the control rod 331 can be inserted into the slot 333. When the control rod 331 is inserted into the slot 333, the driving rod 321 is restricted from being arranged in the vertical direction. A control spring 334 is provided between the control rod 331 and the wall of the control cavity 332. The control spring 334 is used to push the control rod 331 into the slot 333. When the frame 21 is in contact with the installation surface 15, the frame 21 pushes the control rod 331 out of the slot 333 to release the restriction on the driving rod 321.

[0051] Refer to Figure 1 , Figure 8 , a push rod 6 is provided at the bottom of each treatment area 14. The push rod 6 is slidably connected to the treatment tank 1 along the length direction of the treatment tank 1. A space for placing a new activated biological filler module 2 is provided between the push rod 6 and the installed activated biological filler module 2. The push rod 6 can push the new activated biological filler module 2 towards the installation surface 15.

[0052] When replacing the activated biological filler module 2, first insert the new activated biological filler module 2 into the installation groove 13 so that when replacing the old activated biological filler module 2, the leachate can still be purified by the new activated biological filler module 2, thereby improving the convenience of replacing the activated biological filler module 2.

[0053] First, pull the old activated biological filler module 2 upward. The frame 21 pushes the driving block 322 to slide upward. The driving block 322 pulls the driving rod 321 to slide upward. The driving rod 321 drives the spur gear 341 to rotate through the driving rack 329. The spur gear 341 drives the first bevel gear 342 to rotate through the gear shaft 344. The first bevel gear 342 drives the second bevel gear 343 to drive the rotating cylinder 311 to rotate. The rotating cylinder 311 drives the abutting portion 314 to rotate away from the frame 21 to release the abutting state between the abutting portion 314 and the frame 21, thereby being able to reduce the load of pulling up the activated biological filler module 2 and facilitating the disassembly of the activated biological filler module 2.

[0054] When the pressing portion 314 is completely rotated into the fastening groove 313, the driving block 322 is restricted by the end of the strip hole 324, so that the frame 21 can insert the driving block 322 into the clearance groove 326 through the guide surface 325. When the frame 21 is disengaged from the control rod 331, the control spring 334 pushes the control rod 331 to be inserted into the slot 333, limiting the sliding of the driving rod 321, thereby ensuring the stability of the driving block 322 being disengaged from the frame 21, and at the same time allowing the pressing portion 314 to stop more stably in the fastening groove 313.

[0055] Then, the push rod 6 is pushed toward the mounting surface 15, and the push rod 6 pushes the new active biological filler module 2 to fit into the mounting surface 15. Then, the frame 21 squeezes the control rod 331, so that the control rod 331 is pulled out of the slot 333, and the driving rod 321 is released from the restriction. At this time, the torsion spring 312 pushes the rotating cylinder 311 to rotate, and the rotating cylinder 311 drives the pressing part 314 to press the frame 21 against the mounting surface 15, thereby improving the convenience of replacing and installing the active biological filler module 2.

[0056] The implementation principle of a biological treatment device for leachate in an embodiment of the present application is as follows: when treating the leachate, the leachate is introduced into the treatment tank 1 through the liquid inlet 11, and then the leachate flows through multiple active biological filler modules 2 in the treatment tank 1 in sequence. The active biological filler modules 2 purify the leachate. When a certain active biological filler module 2 is inactivated, the corresponding active biological filler module 2 is replaced, thereby avoiding the need to replace the entire active biological filler. Modularizing the entire active biological filler can improve the utilization rate of the active biological filler and reduce the waste of the active biological filler.

[0057] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A biological treatment device for landfill leachate, characterized in that: The invention comprises a treatment pool (1), wherein one end of the treatment pool (1) is provided with a liquid inlet (11), and the other end is provided with a liquid outlet (12), a plurality of active biological filler modules (2) are provided in the treatment pool (1), each active biological filler module (2) is connected to the treatment pool (1) via a connecting unit (3), and the plurality of active biological filler modules (2) are arranged at intervals along the direction of flow of the leachate, and the treatment pool (1) is divided into a plurality of treatment areas (14); It also includes an oxygenation mechanism (5) for adding oxygen to the leachate upstream of each active biological filler module (2), and each treatment area (14) is provided with a detection unit (4) for detecting leachate parameters; The active biological filler module (2) comprises a frame (21) and a filler body (22); a mounting groove (13) is provided in the processing area (14); and a mounting surface (15) is provided on a side of the active biological filler module (2) away from the downstream. The connecting unit (3) comprises a fastener (31), a disassembly member (32) and a control member (33), wherein the control member (33) is used to control the fastener (31) to press the frame (21) against the mounting surface (15); The fastener (31) comprises a rotating cylinder (311) and a torsion spring (312). A fastening groove (313) is provided on a side wall of the mounting groove (13). The rotating cylinder (311) is rotatably arranged in the fastening groove (313) along a vertical direction. A pressing portion (314) is provided on the rotating cylinder (311). The rotating cylinder (311) can drive the pressing portion (314) to rotate to a side of the frame (21) away from the mounting surface (15), and press the frame (21) against the mounting surface (15). The torsion spring (312) is arranged on the rotating cylinder (311), and one end is fixedly arranged on the rotating cylinder (311), and the other end is fixedly arranged on the treatment tank (1), and is used to press the frame (21) against the mounting surface (15). The disassembly member (32) comprises a driving rod (321) and a driving block (322); the driving rod (321) is slidably arranged in the pool wall of the treatment pool (1) along the vertical direction; the driving block (322) is slidably arranged on the driving rod (321) and can drive the driving rod (321) to slide up and down; one end of the driving block (322) extends to the top of the frame (21); the driving rod (321) drives the rotating cylinder (311) to rotate through the transmission member (34); when the driving rod (321) slides upward, the abutting portion (314) rotates in a direction away from the frame (21); A guide surface (325) is provided on the driving block (322), and a clearance groove (326) is provided in the processing pool (1); when the abutting portion (314) rotates into the fastening groove (313), the frame (21) presses the guide surface (325), so that the driving block (322) is inserted into the clearance groove (326), and the driving block (322) is separated from the frame (21); The control member (33) comprises a control rod (331), one end of the control rod (331) protrudes from the mounting surface (15), and the other end extends to the driving rod (321), and a slot (333) for inserting the control rod (331) is provided on the driving rod (321), and the control rod (331) is inserted into the slot (333), so that the abutting portion (314) can be restricted in the fastening groove (313), and the frame (21) can squeeze the control rod (331) so that the control rod (331) is pulled out of the slot (333).

2. The biological treatment device for landfill leachate according to claim 1, characterized in that: The transmission member (34) comprises a spur gear (341), a first bevel gear (342), and a second bevel gear (343); the driving rod (321) is provided with a driving rack (329) along its length direction; the spur gear (341) is coaxially fixedly connected with the first bevel gear (342) and is rotatably arranged with the treatment tank (1); the spur gear (341) is meshed with the driving rack (329); the second bevel gear (343) is rotatably arranged with the treatment tank (1) and drives the rotating cylinder (311) to rotate; the first bevel gear (342) is meshed with the second bevel gear (343).

3. The biological treatment device for landfill leachate according to claim 1, characterized in that: A push rod (6) is slidably provided at the bottom of the processing area (14), and the push rod (6) can push the frame (21) of the spare active biological filler module (2) against the mounting surface (15).

4. The biological treatment device for landfill leachate according to claim 1, characterized in that: The oxygenation mechanism (5) comprises an oxygenator (51) and a ventilation pipe (52). The ends of the ventilation pipes (52) correspond to the active biological filler modules (2) one by one. One end of the ventilation pipes (52) is connected to the outlet of the oxygenator (51). The end of each ventilation pipe (52) is inserted into the leachate upstream of the active biological filler module (2).

5. The biological treatment device for landfill leachate according to claim 1, characterized in that: The detection unit (4) comprises a cod detector (41).

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