Landfill leachate pollutant treatment device for arid and semi-arid regions

Abstract

The invention relates to the technical field of landfill leachate treatment, in particular to a landfill leachate pollutant treatment device for arid and semi-arid regions, and solves the problems that landfill leachate directly permeates into soil, soil or garbage is contained in the landfill leachate during collection, the landfill leachate needs to be filtered after collection, and the treatment time is prolonged. According to the landfill leachate pollutant treatment device for the arid and semi-arid regions, a partition plate is fixed in a landfill pool, a plurality of permeation holes distributed in a rectangular array are formed in the surface of the partition plate, the permeation holes penetrate through the upper surface and the lower surface of the partition plate, and a filter plate is arranged below the partition plate. The assembly for intercepting the garbage is additionally arranged at the bottom of the garbage landfill pool, it is guaranteed that no garbage or soil is contained in the garbage leachate during collection, the purity of the collected garbage leachate is guaranteed, the garbage leachate does not need to be pretreated, the working procedures are simplified, the treatment time is shortened, and the treatment efficiency of the garbage leachate is improved.

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] 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 layer. Leachate is a high-concentration organic wastewater. The properties of 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 infiltrates 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 purpose of the present invention is to provide a device for treating pollutants in landfill leachate in arid and semi-arid areas, so as to solve the problems in the above-mentioned background technology that the landfill leachate directly infiltrates into the soil, contains soil or garbage when collected, and needs to be filtered after collection, which increases the processing time.

[0005] To achieve the above-mentioned purpose, 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 the landfill, and a plurality of infiltration holes distributed in a rectangular array are provided on the surface of the partition, and the infiltration 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 collecting 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 on the inner wall of the landfill, and a landfill leachate delivery pipe is fixed at the bottom of the landfill, and the other end of the landfill leachate delivery pipe is connected to a landfill leachate treatment mechanism;

[0006] The filter plate comprises a filter plate body, a plurality of filter holes are distributed in a rectangular array on the surface of the filter plate body, guide slopes are provided at both ends of the filter holes, the inclination angle of the guide slopes is thirty degrees, guide strips are provided on both sides of one end of the filter holes, 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 garbage 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 to 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 garbage leachate delivery pipe close to the top plate is fixed to the top of an outermost membrane filtration tank, 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 under the fixed frame, a plurality of pushing rods are fixed on the upper surface of the adjusting rod, the top end of the pushing rod is a sphere, and the number of the pushing rods is consistent with the number of the rotating bars.

[0012] Preferably, the outer surface of the adjusting rod is provided with two guide grooves, and two symmetrically positioned 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 to 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 to the outside of the opening on the other side of the landfill pool, and a flushing wastewater collection box is fixed to the other side of the connecting hollow plate.

[0015] Preferably, the landfill is equipped with an opening connected to a hollow plate, the inner side of which is provided with a gate plate, the upper surface of which is equipped with a closed electric telescopic rod, 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 pool to ensure that the garbage leachate does not contain garbage or soil when it is collected, and ensures the purity of the collected garbage leachate. It is unnecessary to pre-treat the garbage leachate, thus simplifying the process, shortening the processing time, and improving the processing efficiency of the garbage 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 the 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 the debris blocked in the filter holes, achieving cleaning of the inside of the filter holes, and 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 supply of the adjustable electric telescopic rod is turned on and started, and the adjustable electric telescopic rod pulls the adjusting rod through the guide slide slot. At this time, the adjusting rod drives the pushing rod to move in the direction of the adjustable electric telescopic rod. At this time, the pushing 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 the 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 surface, it flushes away the waste in the filter hole. At this time, the water will not penetrate downward from the bottom of the filter hole, avoiding the cleaning water from entering the garbage leachate. The flushing waste water can be collected, purified and reused twice or multiple times to avoid waste of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

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

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

[0023] Figure 4 It 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 center 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 It is a schematic diagram of the connection between the adjusting rod and the guide strip of the present invention;

[0028] Fig. 9 It is a structural schematic diagram of the filter plate of the present invention;

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

[0030] In the figure: 1. landfill pool; 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 conveying pipe; 406. discharge pipe; 407. support frame; 408. lower connecting conveying pipe; 5. landfill leachate collection mechanism; 501. fixed frame; 502. rotating bar; 503. adjustable electric telescopic rod; 504. fixed shielding plate ; 505, sliding baffle; 506, gate; 507, closed electric telescopic rod; 508, adjusting rod; 509, guide strip; 510, pushing rod; 511, guide chute; 6, filter plate; 601, filter plate body; 602, filter hole; 603, guide strip; 604, guide plate; 605, guide slope; 7, flushing water pipe; 8, penetration hole; 9, garbage 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 described clearly and completely 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 comprises a landfill 1, wherein a partition 2 is fixed inside the landfill 1, and a plurality of infiltration holes 8 distributed in a rectangular array are arranged on the surface of the partition 2, and the infiltration holes 8 penetrate the upper and lower surfaces of the partition 2, and a filter plate 6 is arranged below the partition 2, and the four sides of the filter plate 6 are fixed to the inner wall of the landfill 1, and 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, and a landfill leachate conveying pipe 9 is fixed at the bottom of the landfill 1, and the other end of the landfill leachate conveying pipe 9 is connected to a landfill leachate treatment mechanism 4, and the partition 2 is used to support and isolate the tie, and the landfill leachate penetrates downward through the infiltration holes 8, and the filter plate 6 performs secondary filtration on the infiltrated landfill leachate, removes the sundries in the landfill leachate, and ensures the purity of the landfill leachate.

[0033] The garbage 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 garbage leachate delivery pipe 9 close to the top plate 402 is fixed to the top end of a membrane filter 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.

[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 garbage leachate is transported into the membrane filter tank 404 by the garbage leachate delivery pipe 9. The garbage leachate enters the membrane filter tank 404, is filtered by the osmotic membrane and enters the buffer storage pipe 403 connected to the membrane filter tank 404. The garbage leachate entering the buffer storage pipe 403 enters another membrane filter tank 404 through the upper connecting delivery pipe 405. The garbage leachate is repeatedly filtered by multiple membrane filter tanks 404 to achieve purification and treatment of the garbage leachate.

[0035] like Figures 4 to 8As shown, the garbage leachate collection mechanism 5 includes a fixed frame 501, which is fixed on the inner side of the garbage 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 on 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 strip protrusion is provided on the inner side of the guide bar 509. The strip 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 but cannot rotate.

[0037] A guide slot 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 slot 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 arranged 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 installed on the outer side of one end of the fixed shielding plate 504, one end of the sliding shielding plate 505 is fixed to the guiding slot 511, and the adjusting electric The movable telescopic rod 503 drives the guide slide groove 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, so as to prevent the garbage leachate from falling on the adjustable electric telescopic rod 503 and corroding the garbage leachate, or to prevent the garbage leachate from entering the adjustable electric telescopic rod 503 and causing a malfunction of the adjustable electric telescopic rod 503.

[0038] Openings are provided on both sides of the landfill 1. An inlet plate 12 is fixed on the outer side of the opening on one side of the landfill 1. A plurality of flushing water pipes 7 are plugged into the water inlet plate 12. A hollow plate 10 is fixed on the outer side of the opening on the other side of the landfill 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 inner side of the opening connected to the hollow plate 10 installed in the landfill 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 1, and the gate plate 506 slides against the inner wall of the landfill 1. The flushing water flow is introduced into the interior of the landfill 1 by 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 Fig. 9 and Fig.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, 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. 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 outward at an angle of forty-five degrees. 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 ninety degrees toward the inner side of the filter hole 602. The guide strips 603 and the guide plates 604 are used to introduce water for washing 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 rushes out from the other end, and the debris blocked in the filter hole 602 is washed, so as to ensure that the filtering performance of the filter hole 602 will not be reduced.

[0040] Working principle: First, the garbage is buried inside the garbage landfill 1, and the garbage is accumulated on the surface of the partition 2. At this time, the garbage leachate generated in the garbage passes through the penetration hole 8 and falls on the surface of the filter plate body 601. At the same time, part of the garbage passes through the penetration hole 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, and the garbage leachate falling on the surface of the filter plate body 601 passes through the filter hole 602 to the bottom of the garbage landfill 1. The garbage leachate accumulates at the bottom of the garbage landfill 1. The garbage leachate accumulates in the garbage landfill 1 until the liquid level reaches the liquid level sensor 11;

[0041] At this time, the garbage leachate delivery pipe 9 starts to extract the garbage leachate at the bottom of the garbage landfill pool 1 and delivers it to the membrane filter tank 404. The garbage leachate enters the membrane filter tank 404, is filtered by the permeable membrane and enters the buffer storage pipe 403. At this time, the buffer storage pipe 403 stores the initially purified garbage leachate. After the buffer storage pipe 403 is full, the buffer storage pipe 403 delivers the garbage leachate to another membrane filter tank 404 through the upper connection delivery pipe 405. The garbage leachate is repeatedly filtered by multiple adjacent membrane filter tanks 404 to achieve the purification of the garbage leachate.

[0042] After the filter plate 6 has been used for a certain period of time, the power supply of the adjustment electric telescopic rod 503 is turned on and started. The adjustment electric telescopic rod 503 pulls the adjustment rod 508 through the guide slide groove 511. At this time, the adjustment rod 508 drives the push rod 510 to move in the direction of the adjustment electric telescopic rod 503. At this time, the push rod 510 passes under the rotating bar 502 and pushes the rotating bar 502 to rotate upward until the upper surface of the rotating bar 502 is flush with the upper surface of the fixed frame 501. At this time, multiple rotating bars 502 contact each other and block the bottom of the filter hole 602. At this time, the flushing water pipe 7 sends the cleaning water into the garbage landfill pool 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 will not penetrate downward from the bottom of the filter hole 602, avoiding the cleaning water from entering the garbage leachate. The flushing wastewater can be collected, purified and reused twice or multiple times to avoid waste of water resources.

[0043] The above are only preferred embodiments of the present invention and are not limited to the details of the above exemplary embodiments. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for treating pollutants in landfill leachate in arid and semi-arid areas, comprising a landfill pool (1), characterized in that: A partition (2) is fixed inside the garbage 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 garbage landfill (1). A garbage leachate collection 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 garbage landfill (1). A garbage leachate delivery pipe (9) is fixed at the bottom of the garbage landfill (1), and the other end of the garbage leachate delivery pipe (9) is connected to a garbage leachate treatment 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), both ends of the filter holes (602) are provided with guide slopes (605), 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), 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).

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 an angle of forty-five degrees, 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 ninety degrees 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 is characterized by: 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 is characterized by: 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 bends, 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), and 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 is characterized by: 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 pushing rods (510) being fixed on the upper surface of the adjusting rod (508), the top end of the pushing rod (510) being a sphere, and the number of the pushing rods (510) being the same as the number of the rotating bars (502).

7. The device for treating landfill leachate pollutants in arid and semi-arid areas according to claim 6, characterized in that: 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 the inner side of the guide bar (509) is provided with a strip-shaped protrusion, which is clamped on the inner side of the guide slot (511).

8. The device for treating landfill leachate pollutants in arid and semi-arid areas according to claim 7, characterized in that: A guide slot (511) is fixed at 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 slot (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); one end of the sliding shielding plate (505) is fixed to the guiding slot (511).

9. The device for treating landfill leachate pollutants in arid and semi-arid areas according to claim 8, characterized in that: Both sides of the garbage 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 garbage landfill pool (1), and a plurality of flushing water pipes (7) are plugged into the inside 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 garbage landfill pool (1), and a flushing wastewater collection box (3) is fixed to the other side of the connecting hollow plate (10).

10. The device for treating landfill leachate pollutants in arid and semi-arid areas according to claim 9, 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).

Images