A device for treating leachate from urban domestic waste

Abstract

The present invention discloses a device for treating leachate of urban domestic garbage, which relates to the field of treatment of garbage leachate and solves the problem that existing garbage leachate treatment devices are difficult to treat efficiently. The device comprises: a device bracket and a feed tank, a plurality of treatment tanks are arranged on the inner side of the device bracket, a plurality of evaporators are fixedly installed on the inner side of the device bracket, and the evaporators are connected to the treatment tanks through connecting pipes; the device also comprises: an injection mechanism for respectively sending the garbage leachate in the feed tank into the plurality of treatment tanks, the injection mechanism is installed at the bottom of the feed tank, the injection mechanism comprises a distribution plate arranged at the bottom of the feed tank, and the distribution plate can send the garbage leachate into the plurality of treatment tanks in turn; the present invention can utilize the rotation of the distribution plate through the injection mechanism to make the garbage leachate in the feed tank enter the plurality of treatment tanks in turn, thereby realizing continuous treatment of the garbage leachate and improving the treatment efficiency of the garbage leachate.

Description

Technical Field

[0001] The invention relates to the field of landfill leachate treatment, in particular to a device for treating urban domestic landfill leachate. Background Art

[0002] Urban domestic waste leachate refers to the high-concentration organic wastewater that seeps out from the garbage layer due to compaction, fermentation, rainwater erosion, surface water or groundwater immersion during the storage, landfill or treatment of domestic waste. After seeping into the groundwater or surface water, it causes water quality to deteriorate and threatens the safety of drinking water. Therefore, the leachate needs to be treated in a timely manner.

[0003] Sealed evaporation treatment of landfill leachate is an efficient treatment technology that evaporates and separates water in the leachate through a closed evaporation system to achieve pollutant concentration or solidification. It is suitable for leachate with high salinity and high concentration of difficult-to-degrade organic matter. Before evaporation treatment, the landfill leachate needs to be pretreated. The landfill leachate is loaded into a tank, and chemical agents are added to make the colloids, suspended matter and some soluble pollutants in the water condense into larger particles, and then separated by gravity sedimentation. Due to the long processing time of mixing and precipitation, only a certain amount of landfill leachate can be loaded, and it can only be treated again after evaporation treatment and discharge, making it difficult to achieve efficient treatment of landfill leachate. Summary of the Invention

[0004] The object of the present invention is to provide a device for treating leachate from municipal solid waste to solve the problems mentioned above.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A device for treating leachate from municipal solid waste comprises: a device support and a feed tank arranged on the top of the device support, a plurality of treatment tanks symmetrically distributed in the center are arranged on the inner side of the device support, a plurality of evaporators symmetrically distributed in the center are fixedly installed on the inner side of the device support, and the evaporators are connected to the treatment tanks through connecting pipes; and further comprises: a material injection mechanism for respectively sending the landfill leachate in the feed tank into the plurality of treatment tanks, the material injection mechanism being installed at the bottom of the feed tank, the material injection mechanism comprising a material distribution plate arranged at the bottom of the feed tank, the material distribution plate The disk can sequentially deliver the leachate into a plurality of the treatment tanks; a feeding mechanism is used to automatically feed chemicals into the treatment tanks; the feeding mechanism is installed on the inner side of the treatment tanks; the feeding mechanism includes a feeding barrel fixedly installed on the inner wall of the top of the treatment tanks; the feeding barrel can quantitatively feed chemicals into the treatment tanks; a scraping mechanism is used to scrape off impurities remaining in the treatment tanks; the scraping mechanism is installed on the inner side of the treatment tanks; the scraping mechanism includes a spiral scraping bar arranged on the inner wall of the treatment tanks; the spiral scraping bar can scrape off impurities on the inner wall of the treatment tanks downwards.

[0007] Preferably, the injection mechanism also includes a mounting base fixedly mounted on the top of the device bracket, the bottom of the feed tank is fixedly mounted on the top of the mounting base, the distribution plate is rotatably mounted on the inner side of the mounting base, the outer side of the distribution plate is provided with a first discharge hole, the outer side of the mounting base is provided with a plurality of second discharge holes distributed in a central symmetrical manner, the number of the second discharge holes is the same as the number of the processing tanks, and the second discharge holes are docked with the processing tanks through discharge pipes, the outer side of the device bracket is fixedly mounted with a mounting plate, the outer side of the mounting plate is provided with a plurality of mounting holes distributed in a central symmetrical manner, the processing tank is fixedly mounted on the inner side of the mounting hole, the bottom of the mounting plate is fixedly mounted with a driving motor, the output end of the driving motor is fixedly mounted with a rotating rod, the rotating rod passes through the mounting plate and the mounting base, and the end of the rotating rod away from the driving motor is fixedly connected to the bottom of the distribution plate.

[0008] Preferably, the unloading mechanism further includes a storage box fixedly mounted on the top of the mounting plate, the storage box is annular in structure, and a unloading tube is fixedly mounted between the storage box and the unloading barrel, the bottom inner wall of the unloading barrel and the bottom inner wall of the unloading tube are fixedly mounted with a discharge plate, a plurality of first unloading holes are opened on the outer side of the discharge plate, a first sealing plate is slidably mounted on the inner side of the unloading barrel, the top of the first sealing plate contacts the discharge plate on the unloading barrel, a second sealing plate is slidably mounted on the top of the unloading barrel, the top of the second sealing plate contacts the discharge plate on the unloading tube The material trays are in contact, and the first sealing plate and the second sealing plate are both provided with multiple second discharge holes, and the first sealing plate and the second sealing plate are staggered. A pull plate is fixedly installed on the outer side of the first sealing plate, and a push rod sliding through the discharge barrel is fixedly installed on the side of the pull plate away from the first sealing plate. A support plate is fixedly installed between the push rod and the second sealing plate, and two symmetrically distributed tension springs are fixedly installed between the pull plate and the inner side of the discharge barrel. A push plate is fixedly installed on the outer side of the rotating rod, and the push plate and the corresponding end of the push rod are both arc-shaped structures.

[0009] Preferably, the scraper mechanism also includes a driven rod rotatably mounted on the inner side of the processing tank, scrapers are fixedly mounted on both ends of the spiral scraper, the outer side of the spiral scraper is in contact with the inner side of the processing tank, the scraper located at the bottom of the spiral scraper is in contact with the bottom inner wall of the processing tank, the end of the scraper away from the spiral scraper is fixedly mounted on the outer side of the driven rod, a main gear is fixedly mounted on the outer side of the rotating rod, the top end of the driven rod extends to the top of the processing tank, and a transmission gear is fixedly mounted on the top end of the driven rod, and the transmission gear is meshed with the main gear.

[0010] Preferably, a collecting tank is fixedly mounted on the bottom inner wall of the device bracket, and the bottom of the processing tank is connected to the collecting tank via a sewage valve.

[0011] Preferably, a slip ring is rotatably installed on the outer side of the distribution plate, an annular cavity is opened on the inner side of the mounting seat for the slip ring to slide in a limited position, and a spring is fixedly installed between the top inner wall of the annular cavity and the outer side of the slip ring.

[0012] Preferably, a support tube is fixedly installed between the discharge barrel and the inner side of the processing tank, and the push rod is slidably installed on the inner side of the support tube.

[0013] Preferably, pulleys are rotatably mounted on the top and bottom of the push plate, two symmetrically distributed annular slide rails are fixedly mounted on the inner side of the mounting plate, and the two pulleys are slidably mounted on the inner sides of the two annular slide rails respectively.

[0014] Preferably, a limit block is fixedly installed on one end of the push rod close to the pull plate.

[0015] Preferably, a sleeve is rotatably mounted on the outer side of the driven rod, and the sleeve is fixedly mounted on the outer side of the storage box.

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

[0017] The present invention uses an injection mechanism and the rotation of a distribution plate to allow the landfill leachate in a feed tank to enter a plurality of treatment tanks in sequence. With the cooperation of the treatment tanks and the evaporator, the plurality of treatment tanks can treat the landfill leachate in sequence and discharge it in sequence, thereby realizing continuous treatment of the landfill leachate and improving the treatment efficiency of the landfill leachate.

[0018] The present invention uses a discharge mechanism, which can make the push plate contact with the push rods on the outside of multiple processing tanks in turn when the distribution disc rotates, seal the discharge pipe, and open the discharge barrel, so that the medicine in the discharge barrel is put into the processing tank; and when the push rod is away from the push rod, the rebound force of the tension spring is used to seal the discharge barrel, and the discharge pipe is opened, and the medicine in the storage box can enter the discharge barrel, thereby achieving the effect of quantitative feeding and improving the convenience and accuracy of medicine feeding.

[0019] The present invention uses a scraping mechanism, which enables the main gear to drive the transmission gear to rotate during the rotation of the rotating rod, and the transmission gear drives the driven rod to rotate synchronously, so that the spiral scraping bar scrapes the impurities inside the processing tank downwards, and the scraper scrapes the impurities on the inner wall of the bottom of the processing tank, thereby achieving the effect of rapid discharge. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 This is a schematic diagram of the structure of the feed tank and the aggregate tank in the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the discharge pipe and the processing tank in the present invention;

[0023] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of area A;

[0024] Figure 5 This is a schematic diagram of the structure of the mounting base and the distribution tray in the present invention;

[0025] Figure 6 This is a schematic diagram of the main gear and mounting plate structure of the present invention;

[0026] Figure 7 Schematic diagram of the structure of the spiral scraper and the scraper in the present invention;

[0027] Figure 8 It is a schematic diagram of the structure of the discharge tray and the push rod in the present invention.

[0028] In the figure: 1. Device bracket; 2. Feed tank; 3. Processing tank; 4. Evaporator; 5. Distribution tray; 6. Discharge barrel; 7. Spiral scraper; 8. Mounting seat; 9. Discharge pipe; 10. Mounting plate; 11. Driving motor; 12. Rotating rod; 13. Storage box; 14. Discharge pipe; 15. Discharge tray; 16. First sealing plate; 17. Second sealing plate; 18. Pull plate; 19. Push rod; 20. Support plate; 21. Tension spring; 22. Push plate; 23. Driven rod; 24. Scraper; 25. Main gear; 26. Transmission gear; 27. Collecting tank; 28. Drain valve; 29. ​​Slip ring; 30. Spring; 31. Support pipe; 32. Pulley; 33. Annular slide rail; 34. Limit block; 35. Sleeve. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example 1: Please refer to Figures 1-8 The figure shows a device for treating leachate from urban domestic waste, comprising a device support 1 and a feed tank 2 arranged on the top of the device support 1, for injecting the leachate to be treated into the feed tank 2, and a plurality of treatment tanks 3 symmetrically distributed in the center are arranged on the inner side of the device support 1, a plurality of evaporators 4 symmetrically distributed in the center are fixedly installed on the inner side of the device support 1, and the evaporators 4 are connected to the treatment tanks 3 through connecting pipes, so that the evaporators 4 evaporate the leachate in the treatment tanks 3, and a relief valve is installed on the top of the treatment tank 3; it also includes: an injection mechanism for respectively sending the leachate in the feed tank 2 into the plurality of treatment tanks 3, and the injection mechanism is installed at the bottom of the feed tank 2.

[0031] The injection mechanism includes a distribution plate 5 arranged at the bottom of the feed tank 2, and the distribution plate 5 can sequentially feed the garbage leachate into multiple treatment tanks 3. The injection mechanism also includes a mounting seat 8 fixedly mounted on the top of the device bracket 1. The bottom of the feed tank 2 is fixedly mounted on the top of the mounting seat 8. The distribution plate 5 is rotatably mounted on the inner side of the mounting seat 8, so that the feed tank 2 and the distribution plate 5 temporarily store the garbage leachate. A first discharge hole is opened on the outer side of the distribution plate 5, and a plurality of second discharge holes are opened on the outer side of the mounting seat 8, which are centrally symmetrically distributed. The number of the second discharge holes is the same as that of the treatment tank 3. The number of is the same, and the second discharge hole is connected to the processing tank 3 through the discharge pipe 9. When the distribution plate 5 rotates, the first discharge hole is aligned with the second discharge hole, so that the leachate in the feed tank 2 can enter the discharge pipe 9 through the first discharge hole and the second discharge hole, and as the distribution plate 5 rotates, the multiple processing tanks 3 are filled in sequence. A mounting plate 10 is fixedly installed on the outside of the device bracket 1. A plurality of mounting holes symmetrically distributed in the center are opened on the outside of the mounting plate 10. The processing tank 3 is fixedly installed on the inner side of the mounting hole, so that the mounting plate 10 provides the processing tank 3 with a The bottom of the mounting plate 10 is fixedly mounted with a driving motor 11, and the output end of the driving motor 11 is fixedly mounted with a rotating rod 12, which passes through the mounting plate 10 and the mounting seat 8. The end of the rotating rod 12 away from the driving motor 11 is fixedly connected to the bottom of the distribution plate 5. The driving motor 11 can drive the distribution plate 5 to rotate through the rotating rod 12, so that the first drainage hole on the distribution plate 5 is aligned with the multiple second drainage holes in sequence, so as to realize the sequential filling of multiple processing tanks 3, which is convenient for the continuous evaporation treatment of the landfill leachate. The bottom inner wall of the device bracket 1 is fixedly mounted with an aggregate Tank 27, the bottom of the treatment tank 3 is connected to the collecting tank 27 through a drain valve 28, so that the impurities evaporated from the inside of the treatment tank 3 can enter the collecting tank 27 for recycling and treatment. A slip ring 29 is rotatably installed on the outer side of the distribution plate 5, and an annular cavity for the limited sliding of the slip ring 29 is opened on the inner side of the mounting seat 8. A spring 30 is fixedly installed between the top inner wall of the annular cavity and the outer side of the slip ring 29. The elastic potential energy of the spring 30 is used to make the slip ring 29 elastically press the distribution plate 5, thereby improving the sealing between the distribution plate 5 and the mounting seat 8 to prevent leakage.

[0032] Example 2: Please refer to Figure 2-Figure 8, this embodiment further explains Example 1. The unloading mechanism in the figure includes a unloading barrel 6 fixedly mounted on the top inner wall of the processing tank 3. The unloading barrel 6 can quantitatively put medicine into the processing tank 3. The unloading mechanism also includes a storage box 13 fixedly mounted on the top of the mounting plate 10 for storing medicine. The storage box 13 is annular in structure, and a unloading pipe 14 is fixedly mounted between the storage box 13 and the unloading barrel 6, so that the medicine in the storage box 13 can enter the unloading barrel 6 through the unloading pipe 14. The bottom inner wall of the unloading barrel 6 and the bottom inner wall of the unloading pipe 14 are fixedly mounted with a discharge tray 15. A plurality of first unloading holes are provided on the outer side of the discharge tray 15. A first sealing plate 16 is slidably mounted on the inner side of the unloading barrel 6. The top of the first sealing plate 16 is in contact with the upper surface of the unloading barrel 6. The discharge disc 15 of the discharge barrel 6 is in contact with the second sealing plate 17, and the top of the discharge barrel 6 is slidably installed with a second sealing plate 17. The top of the second sealing plate 17 is in contact with the discharge disc 15 on the discharge pipe 14, and the first sealing plate 16 and the second sealing plate 17 are both provided with a plurality of second discharge holes, and the first sealing plate 16 and the second sealing plate 17 are staggered. When the second discharge hole on the first sealing plate 16 is aligned with the first discharge hole of the discharge disc 15 on the discharge barrel 6, the second discharge hole on the second sealing plate 17 can be staggered with the first discharge hole of the discharge disc 15 on the discharge pipe 14, and the second sealing plate 17 can seal the discharge pipe 14, and the medicine in the discharge barrel 6 can be put into the processing tank 3. On the contrary, the second discharge hole on the second sealing plate 17 is aligned with the discharge disc 15 on the discharge pipe 14. 5, the second discharge hole on the first sealing plate 16 is staggered with the first discharge hole of the discharge disk 15 on the discharge barrel 6, and the medicine in the storage box 13 can enter the discharge barrel 6 through the discharge pipe 14, so as to realize the quantitative discharge and storage of the medicine. A pull plate 18 is fixedly installed on the outer side of the first sealing plate 16, and a push rod 19 that slides through the discharge barrel 6 is fixedly installed on the side of the pull plate 18 away from the first sealing plate 16. A support plate 20 is fixedly installed between the push rod 19 and the second sealing plate 17, so that when the push rod 19 moves, the first sealing plate 16 and the second sealing plate 17 can be driven to move synchronously through the pull plate 18 and the support plate 20. Two symmetrically distributed tension springs 21 are fixedly installed between the pull plate 18 and the inner side of the discharge barrel 6 to facilitate the movement of the pull plate 18 The push rod 19 is manually reset. A push plate 22 is fixedly installed on the outside of the rotating rod 12, and the end of the push plate 22 corresponding to the push rod 19 is an arc-shaped structure, so that when the rotating rod 12 rotates, it can drive the push plate 22 to make a circular motion with the rotating rod 12 as the center. When the push plate 22 contacts the push rod 19, the push plate 22 can push the push rod 19 to move, thereby realizing the movement of the first sealing plate 16 and the second sealing plate 17. A support tube 31 is fixedly installed between the inner side of the discharge barrel 6 and the processing tank 3. The push rod 19 is slidably installed on the inner side of the support tube 31 to provide support and guidance for the movement of the push rod 19, thereby improving the stability of the movement of the push rod 19. The top and bottom of the push plate 22 are rotatably installed with pulleys 32, and the inner side of the mounting plate 10 is fixedly installed with two symmetrically distributed annular slide rails 33.The two pulleys 32 are slidably mounted on the inner sides of the two annular guide rails 33, respectively. When the push plate 22 makes a circular motion, it can drive the pulleys 32 to move along the inner sides of the annular guide rails 33, thereby improving the smooth movement of the push plate 22. A limit block 34 is fixedly mounted on the end of the push rod 19 near the pull plate 18. When the tension spring 21 pulls the pull plate 18 to reset, the limit block 34 can abut against the inner side of the discharge barrel 6, ensuring the accurate movement of the first and second sealing plates 16 and 17.

[0033] Example 3: Please refer to Figure 3-Figure 7 , this embodiment is further explained for other embodiments. The scraping mechanism in the figure includes a spiral scraper 7 arranged on the inner wall of the processing tank 3, and the spiral scraper 7 can scrape the impurities on the inner wall of the processing tank 3 downward. The scraping mechanism also includes a driven rod 23 rotatably installed on the inner side of the processing tank 3. Scrapers 24 are fixedly installed at both ends of the spiral scraper 7. The outer side of the spiral scraper 7 contacts the inner side of the processing tank 3, so that the spiral scraper 7 can scrape the impurities inside the processing tank 3 downward when it rotates. The scraper 24 at the bottom of the spiral scraper 7 contacts the bottom inner wall of the processing tank 3, so that when the spiral scraper 7 moves, the scraper 24 can move along the bottom inner wall of the processing tank 3, which is convenient for scraping the processing tank. To process impurities at the bottom of the processing tank 3, the end of the scraper 24 away from the spiral scraper 7 is fixedly mounted on the outside of the driven rod 23, and a main gear 25 is fixedly mounted on the outside of the rotating rod 12. The top of the driven rod 23 extends to the top of the processing tank 3, and a transmission gear 26 is fixedly mounted on the top of the driven rod 23. The transmission gear 26 is engaged with the main gear 25, so that when the rotating rod 12 rotates, the main gear 25 can be driven to rotate synchronously. The main gear 25 can drive the driven rod 23 to rotate through the transmission gear 26, which is convenient for scraping impurities in the processing tank 3. A sleeve 35 is rotatably mounted on the outside of the driven rod 23, and the sleeve 35 is fixedly mounted on the outside of the storage box 13 to improve the stability of the rotation of the driven rod 23.

[0034] Working principle: First, the staff connects the pipe for discharging landfill leachate with the feed tank 2, so that the landfill leachate enters the feed tank 2. At this time, the staff starts the drive motor 11, so that the drive motor 11 drives the rotating rod 12 to rotate intermittently, and the rotating rod 12 drives the distribution plate 5 to rotate synchronously, so that the first discharge hole on the distribution plate 5 is aligned with the second discharge hole on the mounting seat 8, and the landfill leachate in the feed tank 2 enters the discharge pipe 9 through the second discharge hole aligned with the first discharge hole, so that the landfill leachate can enter the corresponding treatment tank 3 through the discharge pipe 9. At the same time, the rotating rod 12 drives the push plate 22 to rotate, and the push plate 22 is aligned with the treatment tank filled with landfill leachate. The processing tank 3 is close to each other, so that the push plate 22 pushes the push rod 19 outside the processing tank 3, and the push rod 19 drives the pull plate 18 and the support plate 20 to move synchronously, so that the pull plate 18 and the support plate 20 respectively drive the first sealing plate 16 and the second sealing plate 17 to move synchronously, and the second discharge hole on the first sealing plate 16 is aligned with the first discharge hole of the discharge disk 15 on the discharge barrel 6, and the second discharge hole on the second sealing plate 17 is staggered with the first discharge hole of the discharge disk 15 on the discharge pipe 14, so that the second sealing plate 17 seals the discharge pipe 14, and the medicine in the discharge barrel 6 enters the processing tank 3 through the second discharge hole on the first sealing plate 16 and the first discharge hole on the discharge disk 15. The first sealing plate 16 and the second sealing plate 17 are reset synchronously, so that the second discharge hole on the second sealing plate 17 is aligned with the first discharge hole of the discharge plate 15 on the discharge pipe 14, and the second discharge hole is aligned with the first discharge hole of the discharge plate 15 on the discharge pipe 14. The second discharge hole on the sealing plate 16 is staggered with the first discharge hole of the discharge plate 15 on the discharge barrel 6, so as to achieve the sealing of the discharge barrel 6 and open the discharge pipe 14. The medicine in the storage box 13 can enter the discharge barrel 6 through the discharge pipe 14 to achieve the feeding of the discharge barrel 6. Thus, with the intermittent rotation of the rotating rod 12, the landfill leachate in the feed tank 2 can enter the multiple treatment tanks 3 in sequence. The multiple treatment tanks 3 can evaporate the landfill leachate in sequence and discharge the treated landfill leachate from the drain valve 28 into the collecting tank 27 in sequence, thereby achieving continuous treatment of the landfill leachate, thereby improving the treatment efficiency of the landfill leachate.

[0035] When the rotating rod 12 rotates, it can drive the main gear 25 to rotate synchronously. The main gear 25 can drive the driven rod 23 to rotate through the transmission gear 26, so that the transmission gear 26 drives the driven rod 23 to rotate synchronously. The driven rod 23 drives the spiral scraper 7 to rotate through the scraper 24, so that the spiral scraper 7 scrapes the impurities inside the processing tank 3 downwards, and the scraper 24 located at the bottom of the spiral scraper 7 moves along the bottom inner wall of the processing tank 3, so as to facilitate the delivery of impurities into the collecting tank 27, thereby achieving the effect of rapid discharge.

[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0037] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for treating leachate from municipal solid waste, characterized in that: include: A device bracket (1) and a feed tank (2), wherein a plurality of treatment tanks (3) are provided on the inner side of the device bracket (1), a plurality of evaporators (4) are fixedly installed on the inner side of the device bracket (1), and the evaporators (4) are connected to the treatment tanks (3) via connecting pipes; Also includes: The injection mechanism is used to send the landfill leachate in the feed tank (2) into a plurality of treatment tanks (3) respectively. The injection mechanism is installed at the bottom of the feed tank (2). The injection mechanism includes a distribution plate (5) arranged at the bottom of the feed tank (2). The distribution plate (5) can sequentially send the landfill leachate into the plurality of treatment tanks (3). The injection mechanism also includes a mounting seat (8) installed on the top of the device bracket (1). The bottom of the feed tank (2) is installed on the top of the mounting seat (8). The outer side of the distribution plate (5) is provided with a first discharge hole. The outer side of the mounting seat (8) is provided with a first discharge hole. A plurality of second discharge holes are provided, the number of the second discharge holes is the same as the number of the processing tank (3), and the second discharge holes are docked with the processing tank (3) through a discharge pipe (9); a mounting plate (10) is installed on the outside of the device bracket (1), a plurality of mounting holes are provided on the outside of the mounting plate (10), the processing tank (3) is fixedly installed on the inner side of the mounting holes, a driving motor (11) is installed on the bottom of the mounting plate (10), a rotating rod (12) is fixedly installed on the output end of the driving motor (11), and one end of the rotating rod (12) is fixedly connected to the bottom of the distribution plate (5); A feeding mechanism is used to automatically feed medicine into the processing tank (3), the feeding mechanism is installed on the inner side of the processing tank (3), the feeding mechanism includes a feeding barrel (6) installed on the inner wall of the top of the processing tank (3), the feeding barrel (6) can quantitatively feed medicine into the processing tank (3), the feeding mechanism also includes a storage box (13) installed on the top of the mounting plate (10), and a feeding tube (14) is installed between the storage box (13) and the feeding barrel (6), the bottom inner wall of the feeding barrel (6) and the bottom inner wall of the feeding tube (14) are fixedly installed with a discharge plate (15), the outer side of the discharge plate (15) is provided with a plurality of first feeding holes, and the inner side of the feeding barrel (6) is slidable. A first sealing plate (16) is movably installed, a second sealing plate (17) is slidably installed on the top of the discharge barrel (6), and the first sealing plate (16) and the second sealing plate (17) are both provided with a plurality of second discharge holes, and the first sealing plate (16) and the second sealing plate (17) are staggered, a pull plate (18) is installed on the outer side of the first sealing plate (16), a push rod (19) is fixedly installed on one side of the pull plate (18), a support plate (20) is fixedly installed between the push rod (19) and the second sealing plate (17), two tension springs (21) are installed between the pull plate (18) and the inner side of the discharge barrel (6), and a push plate (22) is fixedly installed on the outer side of the rotating rod (12); The top and bottom of the push plate (22) are both rotatably mounted with pulleys (32), the inner side of the mounting plate (10) is fixedly mounted with two annular slide rails (33), and the two pulleys (32) are respectively slidably mounted on the inner sides of the two annular slide rails (33); A scraping mechanism is used to scrape off impurities remaining in the processing tank (3). The scraping mechanism is installed on the inner side of the processing tank (3). The scraping mechanism includes a spiral scraper (7) arranged on the inner wall of the processing tank (3). The spiral scraper (7) can scrape off impurities on the inner wall of the processing tank (3) downward. The scraping mechanism also includes a driven rod (23) rotatably installed on the inner side of the processing tank (3). Both ends of the spiral scraper (7) are fixedly installed with scrapers (24). The scraper (24) located at the bottom of the spiral scraper (7) contacts the bottom inner wall of the processing tank (3). One end of the scraper (24) is fixedly installed on the outer side of the driven rod (23). A main gear (25) is fixedly installed on the outer side of the rotating rod (12). A transmission gear (26) is fixedly installed on the top of the driven rod (23). The transmission gear (26) is meshed with the main gear (25).

2. The municipal solid waste leachate treatment device according to claim 1, characterized in that: A collecting tank (27) is installed on the inner wall of the bottom of the device bracket (1), and the bottom of the processing tank (3) is connected to the collecting tank (27) via a sewage valve (28).

3. The municipal solid waste leachate treatment device according to claim 1, characterized in that: A slip ring (29) is rotatably mounted on the outer side of the distribution plate (5), an annular cavity is provided on the inner side of the mounting seat (8), and a spring (30) is fixedly mounted between the top inner wall of the annular cavity and the outer side of the slip ring (29).

4. The municipal solid waste leachate treatment device according to claim 1, characterized in that: A support tube (31) is installed between the discharge barrel (6) and the inner side of the processing tank (3), and the push rod (19) is slidably installed on the inner side of the support tube (31).

5. The municipal solid waste leachate treatment device according to claim 1, characterized in that: A limit block (34) is fixedly mounted on one end of the push rod (19).

6. The municipal solid waste leachate treatment device according to claim 1, characterized in that: A sleeve (35) is rotatably mounted on the outer side of the driven rod (23), and the sleeve (35) is mounted on the outer side of the material storage box (13).

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