Landfill leachate treatment device and process

Abstract

The invention discloses a landfill leachate treatment device and process, and relates to the technical field of sewage treatment. The landfill leachate treatment device comprises a treatment pond, a closing cover is arranged at the top of the treatment pond, a first connecting column is fixedly connected to the bottom of the treatment pond, a supporting bottom plate is fixedly connected to the bottom of the first connecting column, and a fixed bottom plate is fixedly connected to the bottom of the supporting bottom plate. According to the treatment device and process for the landfill leachate, a spiral push plate and a compression tank slowly rotate, the spiral push plate rotates to push impurities in the landfill leachate concentrated solution to move downwards to be converged into the compression tank, and the impurities in the liquid are gradually converged under the action of a rotating hollow pipe; and impurities are gradually attached to each other in the compression tank under the action of centrifugal force, and when the first driving motor drives the rotating hollow pipe to rotate at a high speed, impurity aggregates in the treatment tank are gathered towards the edge, so that the coagulation speed of the impurities in the landfill leachate can be accelerated.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and specifically to a treatment device and process for landfill leachate. Background Art

[0002] When garbage is piled up centrally, the internal garbage decomposes through fermentation to produce moisture. The leachate contains a large amount of pollutants and has a high concentration. If it flows freely without treatment, it will cause serious environmental pollution. The land polluted by the leachate is not conducive to plant growth. Therefore, in urban garbage treatment, the leachate needs to be treated after incineration, otherwise it will cause secondary pollution. The patent with the application number CN201010600135.3 discloses a method for treating landfill leachate. First, the landfill leachate is discharged into an adjustment tank for 9 - 15 days of water quality homogenization; then the treated landfill leachate is discharged into a coagulation reaction tank, and then a coagulant and a coagulation aid are added to precipitate with the landfill leachate. The precipitated leachate is discharged into a heating system, and the heated landfill leachate is pumped into an expanded granular sludge bed for anaerobic reaction. The reacted leachate is discharged into a sequencing batch reactor for aerobic reaction. The landfill leachate is filtered through the nanofiltration membrane of the nanofiltration system. The filtrate is discharged into a concentration tank for precipitation. The supernatant is recycled to the adjustment tank, and the precipitated sludge and waste residue are discharged into a filter press. When the existing equipment treats landfill leachate, it is necessary to transfer the landfill leachate for treatment in multiple tanks, and at the same time, it is necessary to wait for the impurities generated by the reaction to precipitate, which results in a slow treatment speed of the landfill leachate. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the present invention provides a treatment device and process for landfill leachate to solve the problems raised in the above background art.

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: A treatment device for landfill leachate includes a treatment tank. A closing cover is provided at the top of the treatment tank. A first connecting column is fixedly connected to the bottom of the treatment tank. The bottom of the first connecting column is fixedly connected to a support bottom plate. The bottom of the support bottom plate is fixedly connected to a fixed bottom plate. An ultraviolet germicidal lamp is fixedly connected to the top of the treatment tank under the closing cover. A mixing mechanism is fixedly connected to the top of the treatment tank. A sludge discharging mechanism is fixedly connected to the outer wall of the treatment tank. The mixing mechanism includes: A fixed frame fixedly connected to the top of the treatment tank; A first driving motor fixedly connected inside the fixed frame; A rotating hollow tube fixedly connected to the bottom of the first driving motor and fixedly connected to the output shaft of the first driving motor.

[0005] Preferably, two spiral push plates are fixedly connected to the outer wall of the rotating hollow tube, and compression grooves are fixedly connected to the bottoms of the two spiral push plates.

[0006] Preferably, openings are provided on the outer side of the compression groove, a limiting frame is fixedly connected to the outer side of the compression groove, a stretching rod is movably connected inside the limiting frame, a sealing cover is fixedly connected to the inner side of the stretching rod, and the sealing cover is located at the corresponding position of the opening of the compression groove. A pushing plate is fixedly connected to the outer side of the stretching rod, and a pressure limiting spring is provided on the outer side of the compression groove.

[0007] Preferably, three suction straight pipes are fixedly connected to the outer side of the rotating hollow tube, the suction straight pipes are communicated with the inside of the rotating hollow tube, a spiral plate is fixedly connected to the inside of the rotating hollow tube, and openings are provided at the corresponding positions of the outer wall of the rotating hollow tube where the two compression grooves are located.

[0008] Preferably, the silt removal mechanism includes an external groove which is arranged on the outer wall of the treatment tank. A fixed support arm is fixedly connected to the top of the treatment tank, the fixed support arm is fixedly connected to the outer wall of the treatment tank. A telescopic rod is fixedly connected to the bottom of the treatment tank, a closing sleeve is fixedly connected to the bottom of the telescopic rod, a second connecting column is fixedly connected to the bottom of the closing sleeve, and a discharge plate is fixedly connected to the bottom of the second connecting column.

[0009] Preferably, a polymerization groove is fixedly connected to the top of the fixed bottom plate at the bottom of the discharge plate, and the polymerization groove is provided with a notch.

[0010] Preferably, a pushing frame is movably connected to the inside of the polymerization groove, a push plate is arranged on the outer side of the pushing frame, a second driving motor is fixedly connected to the top of the fixed bottom plate inside the pushing frame, tooth patterns are arranged on the inner side of the pushing frame, a corresponding gear is arranged on the top of the second driving motor, and the second driving motor can drive the pushing frame to rotate through the gear.

[0011] A treatment process for landfill leachate: S1. First, put the landfill leachate concentrate into the treatment tank, start the first driving motor, and then the first driving motor drives the rotating hollow tube to rotate slowly to promote the aggregation of impurities in the landfill leachate concentrate in the treatment tank. Then, quickly extend the telescopic rod to discharge the impurities in the treatment tank through the silt removal mechanism; S2. After discharging the impurities, quickly retract the telescopic rod to reset. Then, add anaerobic bacteria into the treatment tank, close the closing cover, drive the rotating hollow tube to rotate through the first driving motor to promote the newly formed impurities in the reaction, and quickly extend the telescopic rod to discharge the newly formed impurities through the silt removal mechanism; S3. After discharging the impurities, start the ultraviolet germicidal lamp to inactivate the anaerobic bacteria in the treatment tank; S4. After inactivation, turn off the ultraviolet germicidal lamp, open the closing cover, and add aerobic bacteria into the treatment tank. S5. After the water inside the treatment tank reaches the discharge standard, pump it out for discharge.

[0012] The present invention provides a treatment device for landfill leachate, which has the following beneficial effects: 1. For the treatment device and process of landfill leachate, through the slow rotation of the spiral push plate and the compression tank, the spiral push plate rotates to push the impurities in the landfill leachate concentrate to move downward and gather inside the compression tank. Under the action of the rotating hollow tube, the impurities in the liquid gradually gather, and under the action of centrifugal force, the impurities gradually adhere to each other closely inside the compression tank. When the first driving motor drives the rotating hollow tube to rotate at a high speed, the impurity aggregates inside the treatment tank gather towards the edge, which can accelerate the sedimentation speed of the impurities in the landfill leachate, thereby improving the treatment speed.

[0013] 2. For the treatment device and process of landfill leachate, through the rapid extension of the telescopic rod, the closing sleeve moves downward, and at the same time, the closing sleeve separates the external tank from the inside of the treatment tank. The discharge plate is driven to move downward, so that the impurity polymer on the discharge plate is washed down by the residual liquid inside the external tank, and the impurities inside the landfill leachate concentrate are discharged into the polymerization tank through the gap formed between the discharge plate and the external tank. Without transferring the liquid, slag discharge is achieved, saving the time for transferring the liquid, and can greatly improve the treatment speed of the landfill leachate.

[0014] 3. For the treatment device and process of landfill leachate, when the first driving motor accelerates and rotates, the arc surface of the pushing plate will hit the first connecting column, and under the action of the arc surface of the pushing plate, it moves inward, and then moves again under the action of centrifugal force and hits the first connecting column, generating vibration. The vibration will be transmitted to the discharge plate. Since the discharge plate is in an inclined state, the vibration of the discharge plate will promote the substances adhering to the surface of the discharge plate to slide off the discharge plate, and at the same time, it can prevent impurities from sticking to the discharge plate, improving the speed of discharging impurities, and thus can improve the treatment speed of the landfill leachate. Brief Description of the Drawings

[0015] Figure 1 is the front view three-dimensional structure schematic diagram of the present invention; Figure 2 is the back view three-dimensional structure schematic diagram of the present invention; Figure 3 is Figure 1 the sectional structure schematic diagram; Figure 4 is the structure schematic diagram of the treatment tank of the present invention; Figure 5 is the structure schematic diagram of the first driving motor of the present invention; Figure 6Schematic structural diagram of the rotating hollow tube of the present invention; Figure 7 is Figure 6 Schematic sectional view structure; Figure 8 Schematic structural diagram of the limiting frame of the present invention; Figure 9 is Figure 3 Enlarged structural diagram of part A in; Figure 10 is Figure 4 Enlarged structural diagram of part B in; Figure 11 Schematic structural diagram of the polymerization tank of the present invention.

[0016] In the figure: 1, treatment tank; 2, closing cover; 3, supporting bottom plate; 4, first connecting column; 5, ultraviolet germicidal lamp; 6, mixing mechanism; 601, fixing frame; 602, first driving motor; 603, rotating hollow tube; 604, spiral pushing plate; 605, compression groove; 606, limiting frame; 607, stretching rod; 608, pressure limiting spring; 609, sealing cover; 610, pushing plate; 611, suction straight pipe; 612, spiral plate; 7, silt removal mechanism; 701, external groove; 702, fixing support arm; 703, telescopic rod; 704, closing sleeve; 705, discharge plate; 706, second connecting column; 707, polymerization tank; 708, pushing frame; 709, second driving motor; 8, fixing bottom plate. Detailed implementation manners

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0018] Examples of the described embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0019] Embodiment 1: Please refer to Figures 1-9 , the present invention provides a technical solution: a treatment device for landfill leachate, including a treatment tank 1, a closing cover 2 is arranged on the top of the treatment tank 1, a first connecting column 4 is fixedly connected to the bottom of the treatment tank 1, a supporting bottom plate 3 is fixedly connected to the bottom of the first connecting column 4, a fixing bottom plate 8 is fixedly connected to the bottom of the supporting bottom plate 3, an ultraviolet germicidal lamp 5 is fixedly connected to the top of the treatment tank 1 at the bottom of the closing cover 2, a mixing mechanism 6 is fixedly connected to the top of the treatment tank 1, and a silt removal mechanism 7 is fixedly connected to the outer wall of the treatment tank 1; The mixing mechanism 6 includes: Fixing frame 601, the fixing frame 601 is fixedly connected to the top of the treatment tank 1; First driving motor 602, the first driving motor 602 is fixedly connected inside the fixing frame 601; Rotating hollow tube 603, the rotating hollow tube 603 is fixedly connected to the bottom of the first driving motor 602, and the rotating hollow tube 603 is fixedly connected to the output shaft of the first driving motor 602.

[0020] First, put the garbage leachate concentrate into the treatment tank 1, start the first driving motor 602, and then the first driving motor 602 drives the rotating hollow tube 603 to rotate slowly.

[0021] Two spiral push plates 604 are fixedly connected to the outer wall of the rotating hollow tube 603, and compression grooves 605 are fixedly connected to the bottoms of the two spiral push plates 604.

[0022] The rotating hollow tube 603 will synchronously drive the spiral push plates 604 and the compression grooves 605 to rotate slowly. The rotation of the spiral push plates 604 will push the impurities in the garbage leachate concentrate downward to converge inside the compression grooves 605, and during the rotation of the rotating hollow tube 603, the impurities in the liquid will gradually converge, and under the action of centrifugal force, the impurities will gradually adhere to each other inside the compression grooves 605.

[0023] Openings are provided on the outside of the compression grooves 605. A limiting frame 606 is fixedly connected to the outside of the compression grooves 605. A stretching rod 607 is movably connected inside the limiting frame 606. A sealing cover 609 is fixedly connected to the inner side of the stretching rod 607, and the sealing cover 609 is located at the corresponding position of the opening of the compression groove 605. A pushing plate 610 is fixedly connected to the outside of the stretching rod 607. A pressure-limiting spring 608 is provided on the outside of the compression groove 605.

[0024] After the rotating hollow tube 603 rotates continuously and slowly for a certain period of time, the first driving motor 602 drives the rotating hollow tube 603 to rotate at a high speed. At this time, the rotation speed of the compression groove 605 will become faster, and then the centrifugal forces on the pushing plate 610 and the sealing cover 609 will become larger. The pressure-limiting spring 608 is pushed and compressed by the sealing cover 609, and then the sealing cover 609 moves outward, so that the sealing cover 609 no longer blocks the opening on the compression groove 605, and the accumulated impurities are discharged outward from the opening on the compression groove 605. The impurities in the garbage leachate concentrate inside the treatment tank 1 gather together, and during the rotation of the pushing plate 610, the pushing plate 610 will push the impurity aggregates at the bottom of the treatment tank 1 towards the edge. The maximum outer diameter of the spiral pushing plate 604 and the maximum outer diameter of the pushing plate 610 are smaller than the inner diameter of the treatment tank 1. When the inside of the treatment tank 1 rotates, there is a space between the rotating part and the inner wall of the treatment tank 1. The impurities will move to the edge of this part due to the action of centrifugal force and deviate from the center of the treatment tank 1. Since the impurities are heavier than water, there will not be too violent disturbances in this part of the space, so that the impurities will settle in this part.

[0025] Three suction straight pipes 611 are fixedly connected to the outside of the rotating hollow tube 603. The suction straight pipes 611 are communicated with the inside of the rotating hollow tube 603. A spiral plate 612 is fixedly connected to the inside of the rotating hollow tube 603. Openings are provided at the positions of the outer wall of the rotating hollow tube 603 corresponding to the two compression grooves 605. The liquid level at the edge of the rotating liquid inside the treatment tank 1 will rise, and when the suction straight pipe sucks in the liquid, it will suck in the liquid of the rising part.

[0026] During the rotation of the rotating hollow tube 603, the internal spiral plate 612 will push the liquid inside the rotating hollow tube 603 downward, and then the liquid will be discharged into the compression groove 605 through the corresponding opening. At the same time, the suction straight pipe 611 will absorb the water flow lifted at the top edge due to rotation into the spiral plate 612. When the water flow rushes towards the compression groove 605, the impurities that have already accumulated in the compression groove 605 will be polymerized with the impurities discharged from the rotating hollow tube 603, and it will prevent the impurities from adhering to the inner side of the compression groove 605. And when rotating slowly, the water flow discharged into the compression groove 605 does not have a strong impact force. When the water flow flows towards the outer end of the compression groove 605, it will gradually lose the impact force due to the resistance, and thus will not disperse the impurities. When the rotating hollow tube 603 accelerates rotation, the water discharged from the rotating hollow tube 603 pushed by the spiral plate 612 will promote the aggregation of the polymerized impurities on the compression groove 605 towards the edge of the treatment tank 1.

[0027] Embodiment 2: Please refer to Figures 1-11 , on the basis of Embodiment 1, the present invention provides a technical solution: The silt removal mechanism 7 includes an external trough 701, the external trough 701 is arranged on the outer wall of the treatment tank 1, a fixed support arm 702 is fixedly connected to the top of the treatment tank 1, the fixed support arm 702 is fixedly connected to the outer wall of the treatment tank 1, a telescopic rod 703 is fixedly connected to the bottom of the treatment tank 1, a closing sleeve 704 is fixedly connected to the bottom of the telescopic rod 703, a second connecting column 706 is fixedly connected to the bottom of the closing sleeve 704, and a discharge plate 705 is fixedly connected to the bottom of the second connecting column 706.

[0028] When the first driving motor 602 drives the rotating hollow tube 603 to rotate, the accumulated impurities will be pushed to the edge of the treatment tank 1. As the first driving motor 602 rotates at a high speed, the fixed frame 601 will push the accumulated impurities inside the treatment tank 1 to the top of the discharge plate 705, causing the telescopic rod 703 to quickly extend, and then causing the closing sleeve 704 to move downward. At the same time, the closing sleeve 704 will separate the external trough 701 from the inside of the treatment tank 1. The discharge plate 705 will also move downward under the push of the second connecting column 706. Then, the impurity polymer on the discharge plate 705 will be washed down by the residual liquid inside the external trough 701, and the impurities in the garbage leachate concentrate will be discharged from the gap formed between the discharge plate 705 and the external trough 701.

[0029] When the first driving motor 602 accelerates and rotates, the push plate 610 will move outward, and then the arc surface of the push plate 610 will hit the first connecting column 4. Under the action of the arc surface of the push plate 610, it will move inward, and then move and hit the first connecting column 4 again under the action of centrifugal force, generating vibration. The vibration is transmitted to the discharge plate 705. Since the discharge plate 705 is in an inclined state, the vibration of the discharge plate 705 will promote the substances adhered to the surface of the discharge plate 705 to slide off the discharge plate 705, improving the speed of impurity discharge.

[0030] At the top of the fixed bottom plate 8 and at the bottom of the discharge plate 705, a polymerization tank 707 is fixedly connected, and the polymerization tank 707 is provided with a notch.

[0031] The impurities discharged by the discharge plate 705 will enter the polymerization tank 707.

[0032] A push frame 708 is movably connected to the inner side of the polymerization tank 707. A push plate is arranged on the outer side of the push frame 708. A second driving motor 709 is fixedly connected to the top of the fixed bottom plate 8 and on the inner side of the push frame 708. Tooth patterns are arranged on the inner side of the push frame 708, and a corresponding gear is arranged on the top of the second driving motor 709. The second driving motor 709 can drive the push frame 708 to rotate through the gear.

[0033] The second drive motor 709 drives the corresponding gear to rotate, and then drives the push frame 708 to rotate through the tooth pattern, so that the impurities inside the polymerization tank 707 are pushed by the push plate on the outside of the push frame 708 and discharged from the notch on the polymerization tank 707 under the action of centrifugal force, facilitating the centralized treatment of impurities.

[0034] After the first impurity removal of the landfill leachate concentrate, the telescopic rod 703 quickly contracts and resets, then anaerobic bacteria are added to the treatment tank 1, the closing cover 2 is closed, the newly formed impurities are promoted through the mixing mechanism 6, and then the newly formed impurities are discharged through the sludge discharge mechanism 7.

[0035] Then the ultraviolet germicidal lamp 5 is started to inactivate the anaerobic bacteria inside the treatment tank 1.

[0036] After inactivation, the ultraviolet germicidal lamp 5 is turned off, the closing cover 2 is opened, aerobic bacteria are added to the treatment tank 1, and after the water inside the treatment tank 1 reaches the discharge standard, it can be pumped out for discharge.

[0037] Embodiment 3: Please refer to Figures 1-11 , based on Embodiment 1 and Embodiment 2, the present invention provides a technical solution: A treatment process for landfill leachate: S1. First, put the landfill leachate concentrate into the treatment tank 1, start the first drive motor 602, and then the first drive motor 602 drives the rotating hollow tube 603 to slowly rotate to promote the aggregation of impurities in the landfill leachate concentrate inside the treatment tank 1, and then let the telescopic rod 703 quickly extend to discharge the impurities in the treatment tank 1 through the sludge discharge mechanism 7; S2. After discharging the impurities, the telescopic rod 703 quickly contracts and resets, then anaerobic bacteria are added to the treatment tank 1, the closing cover 2 is closed, the first drive motor 602 drives the rotating hollow tube 603 to rotate to promote the newly formed impurities in the reaction, and let the telescopic rod 703 quickly extend to discharge the newly formed impurities through the sludge discharge mechanism 7; S3. After discharging the impurities, start the ultraviolet germicidal lamp 5 to inactivate the anaerobic bacteria inside the treatment tank 1; S4. After inactivation, turn off the ultraviolet germicidal lamp 5, open the closing cover 2 and add aerobic bacteria to the treatment tank 1; S5. After waiting for the water inside the treatment tank 1 to reach the discharge standard, pump it out for discharge.

[0038] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A device for treating landfill leachate, comprising a treatment tank (1), characterized in that: The top of the treatment pool (1) is provided with a closing cover (2), the bottom of the treatment pool (1) is fixedly connected to a first connecting column (4), the bottom of the first connecting column (4) is fixedly connected to a supporting bottom plate (3), the bottom of the supporting bottom plate (3) is fixedly connected to a fixed bottom plate (8), the top of the treatment pool (1) is located at the bottom of the closing cover (2) and is fixedly connected to an ultraviolet sterilization lamp (5), the top of the treatment pool (1) is fixedly connected to a mixing mechanism (6), and the outer wall of the treatment pool (1) is fixedly connected to a silt discharge mechanism (7); Hybrid institutions (6) include: A fixing frame (601), wherein the fixing frame (601) is fixedly connected to the top of the treatment tank (1); A first drive motor (602), the first drive motor (602) being fixedly connected inside the fixing frame (601); A rotating hollow tube (603), wherein the rotating hollow tube (603) is fixedly connected to the bottom of the first driving motor (602), and the rotating hollow tube (603) is fixedly connected to the output shaft of the first driving motor (602).

2. The device for treating landfill leachate according to claim 1, characterized in that: Two spiral push plates (604) are fixedly connected to the outer wall of the rotating hollow tube (603), and compression grooves (605) are fixedly connected to the bottoms of the two spiral push plates (604).

3. The device for treating landfill leachate according to claim 2, characterized in that: An opening is provided on the outside of the compression groove (605), a limiting frame (606) is fixedly connected to the outside of the compression groove (605), a stretching rod (607) is movably connected inside the limiting frame (606), a sealing cover (609) is fixedly connected to the inside of the stretching rod (607), and the sealing cover (609) is located at a corresponding position of the opening of the compression groove (605), an ejection plate (610) is fixedly connected to the outside of the stretching rod (607), and a limiting pressure spring (608) is provided on the outside of the compression groove (605).

4. The device for treating landfill leachate according to claim 3, characterized in that: Three straight suction pipes (611) are fixedly connected to the outside of the rotating hollow pipe (603); the straight suction pipes (611) are in communication with the inside of the rotating hollow pipe (603); a spiral plate (612) is fixedly connected to the inside of the rotating hollow pipe (603); and openings are provided on the outer wall of the rotating hollow pipe (603) at positions corresponding to the two compression grooves (605).

5. The device for treating landfill leachate according to claim 4, characterized in that: The sludge discharge mechanism (7) comprises an external groove (701), the external groove (701) being arranged on the outer wall of the treatment pool (1), the top of the treatment pool (1) being fixedly connected to a fixed support arm (702), the fixed support arm (702) being fixedly connected to the outer wall of the treatment pool (1), the bottom of the treatment pool (1) being fixedly connected to a telescopic rod (703), the bottom of the telescopic rod (703) being fixedly connected to a closing sleeve (704), the bottom of the closing sleeve (704) being fixedly connected to a second connecting column (706), and the bottom of the second connecting column (706) being fixedly connected to a discharge plate (705).

6. The device for treating landfill leachate according to claim 5, characterized in that: The top of the fixed bottom plate (8) is located at the bottom of the discharge plate (705) and is fixedly connected to a polymerization groove (707), and the polymerization groove (707) is provided with a notch.

7. The device for treating landfill leachate according to claim 6, characterized in that: The inner side of the aggregation groove (707) is movably connected to a pushing frame (708), the outer side of the pushing frame (708) is provided with a pushing plate, the top of the fixed bottom plate (8) is located inside the pushing frame (708) and is fixedly connected to a second driving motor (709), the inner side of the pushing frame (708) is provided with tooth patterns, the top of the second driving motor (709) is provided with a corresponding gear, and the second driving motor (709) can drive the pushing frame (708) to rotate through the gear.

8. A process for treating landfill leachate using the landfill leachate treatment device according to claim 7, characterized in that: S1, firstly put the garbage leachate concentrate into the treatment tank (1), start the first drive motor (602), then the first drive motor (602) drives the rotating hollow tube (603) to rotate slowly, so as to promote the accumulation of impurities in the garbage leachate concentrate in the treatment tank (1), and then the telescopic rod (703) is quickly extended to discharge the impurities in the treatment tank (1) through the sludge discharge mechanism (7); S2, after the impurities are discharged, the telescopic rod (703) is quickly retracted and reset, and then anaerobic bacteria are added into the treatment pool (1), the closing cover (2) is closed, and the first driving motor (602) drives the rotating hollow tube (603) to rotate to promote the reaction of newly formed impurities, and the telescopic rod (703) is quickly extended to discharge the newly formed impurities through the silt discharge mechanism (7); S3, after the impurities are discharged, the ultraviolet sterilization lamp (5) is started to inactivate the anaerobic bacteria inside the treatment pool (1); S4, after inactivation, turn off the ultraviolet sterilization lamp (5), open the closed cover (2) and add aerobic bacteria into the treatment pool (1); S5. Wait for the water in the treatment pool (1) to reach the discharge standard before pumping it out for discharge.

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