A device for treating landfill leachate pollutants in arid and semi-arid regions

Abstract

The present application relates to the technical field of landfill leachate treatment, in particular to a landfill leachate pollutant treatment device for arid and semi-arid areas, which solves the problem that landfill leachate directly penetrates into soil, and the collected landfill leachate contains soil or garbage, and needs to be filtered after collection, increasing the treatment time. The device comprises a landfill pool, a partition plate is fixed in the landfill pool, a plurality of permeation holes in a rectangular array are arranged on the surface of the partition plate, the permeation holes penetrate through the upper and lower surfaces of the partition plate, and a filter plate is arranged below the partition plate. The device increases a garbage interception assembly at the bottom of the landfill pool, ensures that the collected landfill leachate does not contain garbage or soil, ensures the purity of the collected landfill leachate, and simplifies the process, shortens the treatment time, and improves the treatment efficiency of the landfill leachate.

Description

Technical Field

[0001] The invention relates to the technical field of landfill leachate treatment, in particular to a landfill leachate pollutant treatment device in arid and semi-arid areas. Background Art

[0002] Landfill leachate refers to a high-concentration organic wastewater formed by the moisture contained in the garbage itself in the landfill, rainwater, snow and other moisture entering the landfill, minus the saturated water holding capacity of the garbage and covering soil layers, and passing through the garbage layer and covering soil layers. Landfill leachate is a high-concentration organic wastewater. The properties of landfill leachate change with the operation time of the landfill, which is mainly determined by the stabilization process of the garbage in the landfill.

[0003] However, the landfill leachate directly seeps into the soil, and when collected, the landfill leachate will contain soil or garbage, and needs to be filtered after collection, which increases the processing time; therefore, it does not meet the existing needs. In this regard, we propose a landfill leachate pollutant treatment device for arid and semi-arid areas. Summary of the Invention

[0004] The object of the present invention is to provide a device for treating landfill leachate pollutants in arid and semi-arid areas, so as to solve the problems proposed in the above-mentioned background technology that landfill leachate directly seeps into the soil, contains mud or garbage in the landfill leachate during collection, and needs to be filtered after collection, which increases the processing time.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a device for treating landfill leachate pollutants in arid and semi-arid areas, wherein a partition is fixed inside a landfill, and a surface of the partition is provided with a plurality of permeation holes distributed in a rectangular array, wherein the permeation holes penetrate the upper and lower surfaces of the partition, and a filter plate is provided below the partition, and the four sides of the filter plate are fixed to the inner wall of the landfill, and a landfill leachate collection mechanism is fixed below the filter plate, and eight liquid level sensors are also installed below the filter plate, and the liquid level sensors are fixed to the inner wall of the landfill, and a landfill leachate delivery pipe is fixed to the bottom of the landfill, and the other end of the landfill leachate delivery pipe is connected to the landfill leachate treatment mechanism;

[0006] The filter plate includes a filter plate body, and a plurality of filter holes are distributed in a rectangular array on the surface of the filter plate body. Both ends of the filter holes are provided with guide slopes, and the inclination angle of the guide slopes is thirty degrees. Guide strips are provided on both sides of one end of the filter hole, and a guide plate is provided on the inner side of the guide strip, and the outer side of the guide plate is in contact with the inner wall of the filter hole.

[0007] Preferably, one end of the guide strip is inclined outward at an angle of forty-five degrees, the bottom of the guide plate is in contact with the guide slope surface, and the top of the guide plate is bent ninety degrees toward the inside of the filter hole.

[0008] Preferably, the landfill leachate treatment mechanism includes a support plate, a top plate is provided above the support plate, four steel frames are fixed between the top plate and the support plate, a plurality of support frames are fixed at the bottom of the support plate, and a buffer storage tube and a membrane filtration tank are detachably installed between the support plate and the top plate.

[0009] Preferably, the end of the landfill leachate delivery pipe close to the top plate is fixed to the top of a membrane filter tank at the outermost end, the bottom end of the buffer storage pipe is fixed with a lower connecting delivery pipe, and the top end of the buffer storage pipe is fixed with an upper connecting delivery pipe.

[0010] Preferably, the upper connecting delivery pipe and the lower connecting delivery pipe are both U-shaped, and the other end of the lower connecting delivery pipe is connected to the bottom end of the membrane filtration tank. The upper connecting delivery pipe is inclined and one end is connected to the top end of the membrane filtration tank, and a discharge pipe is fixed to the top end of one of the buffer storage pipes.

[0011] Preferably, the landfill leachate collection mechanism includes a fixed frame, which is fixed on the inner side of the landfill pool and fits on the bottom surface of the filter plate body. A plurality of rotating bars are rotatably installed on the inner side of the fixed frame. An adjusting rod is provided below the fixed frame. A plurality of push rods are fixed on the upper surface of the adjusting rod. The top end of the push rod is a sphere, and the number of the push rods is consistent with the number of rotating bars.

[0012] Preferably, the outer surface of the adjusting rod is provided with two guide grooves, and two symmetrical guide strips are provided on the outer sides of both ends of the adjusting rod. One end of the guide strip is fixed to the inner wall of the landfill pool, and the inner side of the guide strip is provided with a strip protrusion, which is clamped in the inner side of the guide groove.

[0013] Preferably, a guide slot is fixed to the bottom of the adjusting rod, an adjustable electric telescopic rod is fixed to one side of the bottom end of the guide slot, one end of the adjustable electric telescopic rod is fixed to the inner wall of the landfill pool, a fixed shielding plate is provided above the adjustable electric telescopic rod, one end of the fixed shielding plate is fixed to the landfill pool, a sliding shielding plate is slidably installed on the outside of one end of the fixed shielding plate, and one end of the sliding shielding plate is fixed to the guide slot.

[0014] Preferably, openings are provided on both sides of the landfill pool, a water inlet plate is fixed on the outside of the opening on one side of the landfill pool, a plurality of flushing water pipes are plugged into the inside of the water inlet plate, a connecting hollow plate is fixed on the outside of the opening on the other side of the landfill pool, and a flushing wastewater collection box is fixed on the other side of the connecting hollow plate.

[0015] Preferably, the landfill is equipped with a gate plate on the inner side of an opening connected to a hollow plate, and a closed electric telescopic rod is installed on the upper surface of the gate plate. The closed electric telescopic rod is fixed to the inner wall of the landfill, and the gate plate slides against the inner wall of the landfill.

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

[0017] 1. The present invention adds a garbage interception component at the bottom of the landfill to ensure that the landfill leachate does not contain garbage or soil when it is collected, thereby ensuring the purity of the collected landfill leachate. It does not require pretreatment of the landfill leachate, simplifies the process, shortens the processing time, and improves the treatment efficiency of the landfill leachate.

[0018] 2. The present invention uses guide strips and guide plates to guide water flushing the surface of the filter plate into the filter holes, so that water enters from one end of the filter plate and flushes out from the other end. At this time, the water enters the filter holes obliquely downward and flushes out of the filter holes obliquely upward, flushing out the debris blocking the filter holes and achieving cleaning of the inside of the filter holes, ensuring that the filtering performance of the filter holes will not be reduced;

[0019] 3. After the filter plate of the present invention has been used for a certain period of time, the power of the adjustment electric telescopic rod is turned on and started. The adjustment electric telescopic rod pulls the adjustment rod through the guide slide. At this time, the adjustment rod drives the push rod to move in the direction of the adjustment electric telescopic rod. At this time, the push rod passes under the rotating bar and pushes the rotating bar to rotate upward until the upper surface of the rotating bar is flush with the upper surface of the fixed frame. At this time, multiple rotating bars contact each other and block the bottom of the filter hole. At this time, the flushing water pipe sends cleaning water into the landfill pool and sprays it on the surface of the filter plate body. When the water flows through the filter plate body, it flushes away the waste in the filter hole. At this time, water will not penetrate downward from the bottom of the filter hole, avoiding the cleaning water from entering the garbage leachate. The flushing wastewater can be collected, purified and reused twice or multiple times, avoiding waste of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0021] Figure 2 It is a structural schematic diagram of the landfill leachate treatment mechanism of the present invention;

[0022] Figure 3 This is a schematic structural diagram of the lower connecting delivery pipe of the present invention;

[0023] Figure 4 This is a schematic diagram of the internal structure of the garbage landfill pool of the present invention;

[0024] Figure 5 for Figure 4 A magnified view of the structure at point A;

[0025] Figure 6 It is a structural schematic diagram of the garbage leachate collection mechanism of the present invention;

[0026] Figure 7 for Figure 6 A magnified view of the structure at B in the middle;

[0027] Figure 8 This is a schematic diagram of the connection between the adjusting rod and the guide bar of the present invention;

[0028] Figure 9 Schematic diagram of the structure of the filter plate of the present invention;

[0029] Figure 10 for Figure 9 Enlarged view of the structure at point C in the middle.

[0030] Figure: 1. Landfill; 2. Partition; 3. Flushing wastewater collection box; 4. Landfill leachate treatment mechanism; 401. Support plate; 402. Top plate; 403. Buffer storage pipe; 404. Membrane filter tank; 405. Upper connecting delivery pipe; 406. Discharge pipe; 407. Support frame; 408. Lower connecting delivery pipe; 5. Landfill leachate collection mechanism; 501. Fixed frame; 502. Rotating bar; 503. Adjustable electric telescopic rod; 504. Fixed shield Plate; 505, sliding baffle; 506, gate; 507, closed electric telescopic rod; 508, adjusting rod; 509, guide bar; 510, push rod; 511, guide chute; 6, filter plate; 601, filter plate body; 602, filter hole; 603, guide bar; 604, guide plate; 605, guide slope; 7, flushing water pipe; 8, infiltration hole; 9, landfill leachate delivery pipe; 10, connecting hollow plate; 11, liquid level sensor; 12, water inlet plate. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] like Figures 1 to 4As shown, a device for treating landfill leachate pollutants in arid and semi-arid areas includes a landfill 1, a partition 2 is fixed inside the landfill 1, and a surface of the partition 2 is provided with a plurality of infiltration holes 8 distributed in a rectangular array, the infiltration holes 8 passing through the upper and lower surfaces of the partition 2, a filter plate 6 is provided below the partition 2, and the four sides of the filter plate 6 are fixed to the inner wall of the landfill 1, a landfill leachate collecting mechanism 5 is fixed below the filter plate 6, and eight liquid level sensors 11 are also installed below the filter plate 6, and the liquid level sensors 11 are fixed to the inner wall of the landfill 1, a landfill leachate delivery pipe 9 is fixed to the bottom of the landfill 1, and the other end of the landfill leachate delivery pipe 9 is connected to the landfill leachate treatment mechanism 4, the partition 2 is used to support and isolate the leachate, and the landfill leachate penetrates downward through the infiltration holes 8, and the filter plate 6 performs secondary filtration on the infiltrated landfill leachate to remove impurities in the landfill leachate to ensure the purity of the landfill leachate.

[0033] The landfill leachate treatment mechanism 4 includes a support plate 401, a top plate 402 is provided above the support plate 401, four steel frames are fixed between the top plate 402 and the support plate 401, a plurality of support frames 407 are fixed at the bottom of the support plate 401, a buffer storage pipe 403 and a membrane filter tank 404 are detachably installed between the support plate 401 and the top plate 402, the end of the landfill leachate delivery pipe 9 close to the top plate 402 is fixed to the top of the outermost membrane filter tank 404, the bottom end of the buffer storage pipe 403 is fixed with a lower connecting delivery pipe 408, and the top end of the buffer storage pipe 403 is fixed with an upper connecting delivery pipe 405.

[0034] The upper connecting delivery pipe 405 and the lower connecting delivery pipe 408 are both U-shaped, and the other end of the lower connecting delivery pipe 408 is connected to the bottom end of the membrane filter tank 404. The upper connecting delivery pipe 405 is inclined and one end is connected to the top of the membrane filter tank 404. A discharge pipe 406 is fixed to the top of one of the buffer storage pipes 403. The collected landfill leachate is transported into the membrane filter tank 404 by the landfill leachate delivery pipe 9. The landfill leachate enters the membrane filter tank 404, is filtered by the osmotic membrane, and enters the buffer storage pipe 403 connected to this membrane filter tank 404. The landfill leachate entering the buffer storage pipe 403 enters another membrane filter tank 404 through the upper connecting delivery pipe 405. The landfill leachate is repeatedly filtered by multiple membrane filter tanks 404 to achieve purification and treatment of the landfill leachate.

[0035] like Figures 4 to 8As shown, the landfill leachate collection mechanism 5 includes a fixed frame 501, which is fixed to the inner side of the landfill pool 1 and fits on the bottom surface of the filter plate body 601. A plurality of rotating bars 502 are rotatably installed on the inner side of the fixed frame 501. An adjusting rod 508 is provided below the fixed frame 501. A plurality of pushing rods 510 are fixed to the upper surface of the adjusting rod 508. The top of the pushing rod 510 is a sphere, and the number of the pushing rods 510 is consistent with the number of the rotating bars 502. The pushing rods 510 on the upper surface of the adjusting rod 508 are used to push the rotating bars 502 from the bottom to realize the upward rotation and closure of the rotating bars 502, thereby sealing the fixed frame 501.

[0036] Two guide grooves 511 are provided on the outer surface of the adjusting rod 508, and two symmetrical guide bars 509 are provided on the outer sides of both ends of the adjusting rod 508. One end of the guide bar 509 is fixed to the inner wall of the landfill pool 1, and a bar-shaped protrusion is provided on the inner side of the guide bar 509. The bar protrusion is clamped on the inner side of the guide groove 511. The guide bar 509 is used to support the position and guide the movement of the adjusting rod 508, so that the guide bar 509 can only move along its axial direction and cannot rotate.

[0037] The bottom of the adjusting rod 508 is fixed with a guide slot 511, and one side of the bottom end of the guide slot 511 is fixed with an adjusting electric telescopic rod 503, one end of the adjusting electric telescopic rod 503 is fixed to the inner wall of the garbage landfill pool 1, and a fixed shielding plate 504 is provided above the adjusting electric telescopic rod 503, one end of the fixed shielding plate 504 is fixed to the garbage landfill pool 1, and a sliding shielding plate 505 is slidably installed on the outer side of one end of the fixed shielding plate 504, and one end of the sliding shielding plate 505 is fixed to the guide slot 511. By adjusting the electric The movable telescopic rod 503 drives the guide slide 511 to move, so that the adjusting rod 508 drives the pushing rod 510 to move, so that the pushing rod 510 pushes and rotates the rotating bar 502, and protects the adjustable electric telescopic rod 503 by the fixed shielding plate 504 and the sliding shielding plate 505 to prevent the landfill leachate from falling on the adjustable electric telescopic rod 503 and causing corrosion to the landfill leachate, or to prevent the landfill leachate from entering the interior of the adjustable electric telescopic rod 503 and causing malfunction of the adjustable electric telescopic rod 503.

[0038] There are openings on both sides of the landfill pool 1. An inlet plate 12 is fixed on the outside of the opening on one side of the landfill pool 1. A plurality of flushing water pipes 7 are plugged into the inside of the water inlet plate 12. A hollow plate 10 is fixed on the outside of the opening on the other side of the landfill pool 1. A flushing wastewater collection box 3 is fixed on the other side of the hollow plate 10. A gate plate 506 is provided on the inside of the opening connected to the hollow plate 10 of the landfill pool 1. A closed electric telescopic rod 507 is installed on the upper surface of the gate plate 506. The closed electric telescopic rod 507 is fixed to the inner wall of the landfill pool 1, and the gate plate 506 slides along the inner wall of the landfill pool 1. The flushing water flow is introduced into the interior of the landfill pool 1 by means of the flushing water pipe 7 and sprayed on the surface of the filter plate 6, so as to clean the surface of the filter plate 6. The cleaned wastewater enters the flushing wastewater collection box 3 through the opening connected to the hollow plate 10 for collection, so as to ensure that the filtering performance of the filter plate 6 will not be reduced.

[0039] like Figure 9 and Figure 10 As shown, the filter plate 6 includes a filter plate body 601, and a plurality of filter holes 602 are distributed in a rectangular array on the surface of the filter plate body 601. Guide slopes 605 are provided at both ends of the filter holes 602. The inclination angle of the guide slopes 605 is thirty degrees. Guide strips 603 are provided on both sides of one end of the filter hole 602, and a guide plate 604 is provided on the inner side of the guide strip 603. The outer side of the guide plate 604 fits the inner wall of the filter hole 602, and one end of the guide strip 603 is inclined at a forty-five degree angle toward the outside. The bottom of the guide plate 604 fits the surface of the guide slope 605, and the top of the guide plate 604 is bent at ninety degrees toward the inside of the filter hole 602. The guide strips 603 and the guide plates 604 are used to guide water that washes the surface of the filter plate body 601 into the filter hole 602, so that the water enters from one end of the filter plate body 601 and flushes out from the other end, thereby flushing the debris blocked in the filter hole 602, ensuring that the filtering performance of the filter hole 602 will not be reduced.

[0040] Working Principle: First, garbage is buried inside the landfill 1, and the garbage accumulates on the surface of the partition 2. At this time, the garbage leachate generated in the garbage passes through the permeation holes 8 and falls on the surface of the filter plate body 601. At the same time, some garbage passes through the permeation holes 8 and also falls on the surface of the filter plate body 601. The filter plate body 601 intercepts the garbage falling on its surface, while the garbage leachate falling on the surface of the filter plate body 601 passes through the filter holes 602 and reaches the bottom of the landfill 1. The garbage leachate accumulates at the bottom of the landfill 1 and accumulates in the landfill 1 until the liquid level reaches the liquid level sensor 11.

[0041] At this time, the landfill leachate conveying pipe 9 starts to extract the landfill leachate at the bottom of the landfill 1 and send it into the membrane filtration tank 404, and the landfill leachate enters the membrane filtration tank 404 and is filtered by the permeable membrane and enters the buffer storage pipe 403, at this time, the buffer storage pipe 403 stores the primary purified landfill leachate, after the buffer storage pipe 403 is full, the buffer storage pipe 403 sends the landfill leachate into another membrane filtration tank 404 through the upper connecting conveying pipe 405, and multiple adjacent membrane filtration tanks 404 are used to repeatedly filter the landfill leachate, so as to purify the landfill leachate;

[0042] After the filter plate 6 is used for a certain period of time, the power supply of the adjusting electric telescopic rod 503 is turned on and started, and the adjusting electric telescopic rod 503 pulls the adjusting rod 508 through the guide chute 511, at this time, the adjusting rod 508 drives the push rod 510 to move towards the adjusting electric telescopic rod 503, at this time, the push rod 510 passes under the rotating strip 502 and pushes the rotating strip 502 to rotate upwards, until the upper surface of the rotating strip 502 is flush with the upper surface of the fixed frame 501, at this time, multiple rotating strips 502 contact each other and shield the bottom of the filter hole 602, at this time, the flushing water pipe 7 sends cleaning water into the inside of the landfill 1 and sprays it on the surface of the filter plate body 601, when the water flows through the surface of the filter plate body 601, the waste in the filter hole 602 is washed away, at this time, the water cannot penetrate downward from the bottom of the filter hole 602, avoiding the cleaning water entering the landfill leachate, the flushing waste water can be collected, purified and reused, avoiding waste of water resources.

[0043] The above is only a preferred embodiment of the present application, and is not limited to the details of the above exemplary embodiments, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A device for treating landfill leachate pollutants in arid and semi-arid areas, comprising a landfill pool (1), characterized in that: A partition (2) is fixed inside the landfill (1), and a plurality of permeation holes (8) distributed in a rectangular array are provided on the surface of the partition (2), and the permeation holes (8) penetrate the upper and lower surfaces of the partition (2). A filter plate (6) is provided below the partition (2), and the four sides of the filter plate (6) are fixed to the inner wall of the landfill (1). A landfill leachate collecting mechanism (5) is fixed below the filter plate (6), and eight liquid level sensors (11) are also installed below the filter plate (6), and the liquid level sensors (11) are fixed on the inner wall of the landfill (1). A landfill leachate delivery pipe (9) is fixed at the bottom of the landfill (1), and the other end of the landfill leachate delivery pipe (9) is connected to a landfill leachate processing mechanism (4); The filter plate (6) comprises a filter plate body (601), a plurality of filter holes (602) are distributed in a rectangular array on the surface of the filter plate body (601), guide slopes (605) are provided at both ends of the filter holes (602), and the inclination angle of the guide slopes (605) is thirty degrees. Guide strips (603) are provided on both sides of one end of the filter hole (602), and a guide plate (604) is provided on the inner side of the guide strip (603), and the outer side of the guide plate (604) is in contact with the inner wall of the filter hole (602); The landfill leachate collection mechanism (5) comprises a fixed frame (501), the fixed frame (501) being fixed on the inner side of the landfill pool (1) and being attached to the bottom surface of the filter plate body (601), a plurality of rotating bars (502) being rotatably mounted on the inner side of the fixed frame (501), an adjusting rod (508) being provided below the fixed frame (501), a plurality of push rods (510) being fixed on the upper surface of the adjusting rod (508), the top ends of the push rods (510) being spherical, and the number of the push rods (510) being the same as the number of the rotating bars (502); The outer surface of the adjusting rod (508) is provided with two guide slots (511), and two symmetrical guide bars (509) are provided on the outer sides of both ends of the adjusting rod (508). One end of the guide bar (509) is fixed to the inner wall of the garbage landfill pool (1), and a strip-shaped protrusion is provided on the inner side of the guide bar (509), and the strip-shaped protrusion is clamped on the inner side of the guide slot (511); A guide chute (511) is fixed to the bottom of the adjusting rod (508), an adjusting electric telescopic rod (503) is fixed to one side of the bottom end of the guiding chute (511), one end of the adjusting electric telescopic rod (503) is fixed to the inner wall of the garbage landfill pool (1), a fixed shielding plate (504) is provided above the adjusting electric telescopic rod (503), one end of the fixed shielding plate (504) is fixed to the garbage landfill pool (1), a sliding shielding plate (505) is slidably mounted on the outer side of one end of the fixed shielding plate (504), and one end of the sliding shielding plate (505) is fixed to the guiding chute (511).

2. The device for treating landfill leachate pollutants in arid and semi-arid areas according to claim 1, characterized in that: One end of the guide strip (603) is inclined outward at a 45-degree angle, the bottom of the guide plate (604) is in contact with the surface of the guide slope (605), and the top of the guide plate (604) is bent at a 90-degree angle toward the inside of the filter hole (602).

3. The device for treating landfill leachate pollutants in arid and semi-arid areas according to claim 1, characterized in that: The landfill leachate treatment mechanism (4) comprises a support plate (401), a top plate (402) is provided above the support plate (401), four steel frames are fixed between the top plate (402) and the support plate (401), a plurality of support frames (407) are fixed at the bottom of the support plate (401), and a buffer storage tube (403) and a membrane filtration tank (404) are detachably installed between the support plate (401) and the top plate (402).

4. The device for treating landfill leachate pollutants in arid and semi-arid areas according to claim 3, characterized in that: The end of the landfill leachate delivery pipe (9) close to the top plate (402) is fixed to the top end of a membrane filtration tank (404) at the outermost end, a lower connecting delivery pipe (408) is fixed to the bottom end of the buffer storage pipe (403), and an upper connecting delivery pipe (405) is fixed to the top end of the buffer storage pipe (403).

5. The device for treating landfill leachate pollutants in arid and semi-arid areas according to claim 4, characterized in that: The upper connecting delivery pipe (405) and the lower connecting delivery pipe (408) are both U-shaped, and the other end of the lower connecting delivery pipe (408) is connected to the bottom end of the membrane filtration tank (404). The upper connecting delivery pipe (405) is inclined and one end is connected to the top end of the membrane filtration tank (404). A discharge pipe (406) is fixed to the top end of one of the buffer storage pipes (403).

6. The device for treating landfill leachate pollutants in arid and semi-arid areas according to claim 1, characterized in that: Both sides of the landfill pool (1) are provided with openings. A water inlet plate (12) is fixed to the outside of the opening on one side of the landfill pool (1), and a plurality of flushing water pipes (7) are plugged into the interior of the water inlet plate (12). A connecting hollow plate (10) is fixed to the outside of the opening on the other side of the landfill pool (1), and a flushing wastewater collection box (3) is fixed to the other side of the connecting hollow plate (10).

7. The device for treating landfill leachate pollutants in arid and semi-arid areas according to claim 6, characterized in that: The garbage landfill (1) is provided with a gate plate (506) on the inner side of an opening connected to a hollow plate (10), and a closed electric telescopic rod (507) is installed on the upper surface of the gate plate (506). The closed electric telescopic rod (507) is fixed to the inner wall of the garbage landfill (1), and the gate plate (506) slides in contact with the inner wall of the garbage landfill (1).

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