Landfill leachate treatment device for pollution treatment

Abstract

The utility model provides a landfill leachate treatment device for pollution treatment, which relates to the technical field of landfill leachate treatment and comprises a power distribution cabinet for equipment power supply distribution, an equipment base frame is arranged at the lower end of the power distribution cabinet, and a sand filter tank mounting frame is integrally connected to the upper end of the equipment base frame and positioned on one side of the power distribution cabinet. A sand filtering assembly for primary coarse filtration is fixedly mounted on the sand filtering tank mounting rack, and the raw water main pipe is mounted at the upper end of the equipment base frame through a main pipe mounting rack; according to the utility model, firstly, raw water is pressurized and introduced into the raw water main pipe, enters the sand filtering assembly along the raw water main pipe, is filtered in the sand filtering assembly, can filter out colloidal viscous substances carried in percolate, and flows through the double-head water inlet pipe on the filtered raw water pipe along the sand filtering back-flushing pipe at the lower end and a channel of the secondary raw water pipe; and then the small particles are converged into the filtering water outlet pipe from the middle filtering membrane water outlet pipe and enter the next treatment process.

Description

Technical Field

[0001] The utility model relates to the technical field of landfill leachate treatment, in particular to a landfill leachate treatment device for pollution control. Background Art

[0002] Landfill leachate is a highly concentrated organic wastewater formed by the water contained in the landfill itself, rainwater, snow, and other water that enters the landfill, minus the saturated water holding capacity of the landfill and the overburden, and then passing through the landfill and overburden layers. There is also water that leaks from accumulated garbage destined for incineration.

[0003] At present, in the initial stage of landfill leachate treatment, the leachate needs to be filtered to separate and filter the large particles carried therein. However, the current filtration equipment cannot effectively separate the colloidal and viscous substances carried in the landfill leachate, resulting in the subsequent small molecule filtration equipment being blocked, affecting the filtration effect. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a landfill leachate treatment device for pollution control, which solves the problem that in the initial stage of current landfill leachate treatment, the leachate needs to be filtered to separate and filter the large particles carried therein, while the current filtering equipment cannot effectively separate the colloidal and viscous substances carried in the landfill leachate, resulting in the subsequent small molecule filtering equipment being blocked, affecting the filtering effect.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a landfill leachate treatment device for pollution control, comprising a power distribution cabinet for equipment power distribution, an equipment base frame being provided at the lower end of the power distribution cabinet, a sand filter tank mounting frame being integrally connected to the upper end of the equipment base frame and located on one side of the power distribution cabinet, a sand filter assembly for primary coarse filtration being fixedly mounted on the sand filter tank mounting frame, a raw water main being fixedly connected to the upper end of the sand filter assembly, a plurality of main pipe mounting frames being fixedly mounted on the upper end of the equipment base frame, and the raw water main being mounted on the upper end of the equipment base frame via the main pipe mounting frame;

[0006] A plurality of filter membrane assembly mounting racks are fixedly mounted on the upper end of the equipment base frame, and a filter membrane assembly for secondary filtration is fixedly mounted on each of the filter membrane assembly mounting racks.

[0007] Preferably, the lower end of the sand filter assembly is fixedly connected to a sand filter backflush pipe, an electronic valve is fixedly installed on the upper end of the sand filter backflush pipe, one end of the equipment base frame is fixedly installed with a backflush pump mounting plate, and the upper end surface of the backflush pump mounting plate is fixedly installed with a backflush pump;

[0008] One end of the sand filter backwash pipe is connected to the output port of the backwash pump.

[0009] Preferably, one side of the sand filter backwash pipe is integrally connected with a secondary raw water pipe;

[0010] Several filter pipe racks are fixedly installed on the base frame of the equipment, and the first filter raw water pipe and the second filter raw water pipe are fixedly installed on the filter pipe rack. Several groups of three-way joints are fixedly installed on the filter raw water pipe and the filter outlet pipe, and each group of three-way joints has two and are not connected to each other.

[0011] Preferably, the secondary raw water pipe is connected to the filtered raw water pipe;

[0012] The two interfaces of one of the three-way connectors in each group are connected to the filtered raw water pipe and the other interface is connected to the double-headed water inlet pipe. The two interfaces of another three-way connector in each group are connected to the filtered water outlet pipe and the other interface is connected to the filter membrane outlet pipe.

[0013] Preferably, the sand filter assembly includes: a sand filter outer tank, a sand filter tank water inlet pipe head, a sand filter tank water outlet pipe head, a sand filter inner tank support frame, a sand filter inner tank, an inner tank water inlet pipe, a central conduit, a water guide cover, an inner tank water outlet pipe, a secondary water guide groove, a filter screen and a water guide platform;

[0014] The sand filter tank mounting frame is fixedly mounted with a sand filter outer tank, the upper end of the sand filter outer tank is integrally provided with a sand filter tank water inlet pipe head, and the lower end of the sand filter outer tank is integrally provided with a sand filter tank water outlet pipe head;

[0015] A plurality of sand filter inner tank support frames are fixedly installed on the inner wall of the lower end of the sand filter outer tank, and the sand filter inner tank is fixedly installed on the upper end of the sand filter inner tank support frame. An inner tank water inlet pipe is provided on the side of the sand filter inner tank, and the inner end of the inner tank water inlet pipe is fixedly connected to a central conduit, and the lower end of the central conduit is fixedly connected to a water guide cover, and an inner tank water outlet pipe is fixedly provided on the upper end of the central conduit, and a secondary water guide groove is fixedly installed on the upper end of the secondary water guide groove. A filter screen is fixedly installed;

[0016] The inner wall of the lower end of the sand filter inner tank is integrally provided with a water guide platform.

[0017] Preferably, the upper end of the inner tank water inlet pipe is connected to the sand filter tank water inlet pipe head, and the upper end of the sand filter tank water inlet pipe head is connected to the raw water main.

[0018] Preferably, the lower end of the inner tank water outlet pipe is connected to the sand filter tank water outlet pipe head, and the lower end of the sand filter tank water outlet pipe head is connected to the sand filter backwash pipe.

[0019] Preferably, the filter membrane assembly includes: a filter membrane assembly outer cylinder, an upper mounting head, a water-isolating inner cylinder, an inner cylinder water inlet head, a water inlet hole, a water filter baffle, a baffle connecting hole, a filter membrane support rod, a filter membrane, a filter membrane pressure dividing hole, a first filter water outlet, a second filter water outlet, a first outer cylinder clamping ring, a second outer cylinder clamping ring and an outer filter ring;

[0020] The upper end of the membrane assembly mounting frame is fixedly mounted with the outer cylinder of the membrane assembly, the upper end of the outer cylinder of the membrane assembly is integrally provided with an upper mounting head, the lower end of the upper mounting head is fixedly connected to the inner cylinder water inlet head, and the side of the inner cylinder water inlet head is provided with a plurality of water inlet holes;

[0021] The lower end of the water inlet head of the inner cylinder is integrally connected to a water-proof inner cylinder, and a plurality of water filter baffles are integrally provided on the inner wall of the water-proof inner cylinder. A plurality of filter membrane support rods are provided between every two of the water filter baffles, and a filter membrane is fixedly installed on the filter membrane support rod;

[0022] Each of the water filter partitions is provided with a partition connection hole, and each of the filter membranes is provided with a filter membrane pressure dividing hole;

[0023] The lower end of the outer tube of the filter membrane assembly is integrated with a first filter outlet and two second filter outlets. The lower end of the inner wall of the outer tube of the filter membrane assembly is fixedly installed with a first outer tube clamping ring. The lower end of the outer surface of the water-proof inner tube is integrated with a second outer tube clamping ring. Several outer filter rings are arranged between the outer tube of the filter membrane assembly and the water-proof inner tube.

[0024] Preferably, the upper end of the first filter water outlet is communicated with the water-proof inner cylinder, and the two second filter water outlets are communicated with the outer cylinder of the filter membrane assembly and the water-proof inner cylinder.

[0025] Preferably, the lower end of the first filter water outlet is connected to the filter membrane water outlet pipe, and the lower ends of the two second filter water outlets are respectively connected to the two joints of the double-headed water inlet pipe.

[0026] The utility model provides a landfill leachate treatment device for pollution control, which has the following beneficial effects:

[0027] The utility model first pressurizes raw water into the raw water main pipe, and then enters the filter sand assembly along the raw water main pipe. After filtering in the filter sand assembly, the colloidal and viscous substances carried in the leachate can be filtered out. Then, along the filter sand backwash pipe at the lower end and the channel of the secondary raw water pipe, from the double-headed water inlet pipe on the filter raw water pipe, it enters each filter membrane assembly for fine filtration of small particles, and then converges from the middle filter membrane outlet pipe to the filter outlet pipe to enter the next treatment process.

[0028] Among them, the quartz sand loaded in the filter sand inner tank of the filter sand assembly can effectively filter viscous substances. By guiding the raw water main into the leachate, the leachate enters the water inlet pipe of the inner tank and then enters the central conduit. The leachate is guided to the edge of the filter sand inner tank through the water guide cover at the lower end. After being filtered by the quartz sand therein, it passes through the filter screen at the upper end to separate the carried quartz sand and enter the inner tank outlet pipe from the secondary water guide groove so that it can flow out. By guiding the liquid to the outer ring of the container through the water guide cover, the flow path during filtration can be increased, so that the inner and outer rings form a cycle, the upper layer of liquid is taken out, and the filtering effect is enhanced, thereby being able to filter the colloidal viscous substances in the liquid.

[0029] Among them, the water filtration partition and filter membrane in the filter membrane assembly make the liquid form an alternating flow direction of the inner circle and the outer circle, which can enhance the filtering effect. First, the liquid after the above-mentioned first-level filtration is respectively passed into the two filter outlets through the two ports of the double-headed water inlet pipe, and then passes through the gap between the first outer tube clamping ring and the second outer tube clamping ring to perform the first filtration in this assembly, and then passes through the outer filter ring of the outer circle for the second filtration, enters the water-proof inner tube from the water inlet hole at the upper end, passes through the partition connection hole of the water filtration partition, and is filtered through the filter membrane. The liquid is filtered from the outside of the filter membrane and then enters the lower layer, thereby enhancing the filtering effect. By opening a filter membrane pressure dividing hole on the filter membrane, the water pressure of the filter membrane can be reduced, the filtration speed can be increased, and it can also avoid passing through the filter membrane pressure dividing hole after the filter membrane of this layer is blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0031] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0032] Figure 3 For this utility model Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0033] Figure 4 This is a schematic structural diagram of the sand filter assembly of the present invention;

[0034] Figure 5 This is a side structural diagram of the sand filter assembly of the present invention;

[0035] Figure 6 For this utility model Figure 4 Schematic diagram of the cross-sectional structure along line aa;

[0036] Figure 7 This is a schematic structural diagram of the filter membrane assembly of the utility model;

[0037] Figure 8This is a side view structural diagram of the filter membrane assembly of the present invention;

[0038] Figure 9 For this utility model Figure 8 Schematic diagram of the cross-sectional structure along the bb line;

[0039] Figure 10 For this utility model Figure 9 Schematic diagram of the enlarged structure at B in the middle;

[0040] Figure 11 For this utility model Figure 9 Schematic diagram of the enlarged structure at point C in the middle.

[0041] Among them, 1. Equipment base frame; 2. Sand filter tank mounting frame; 3. Sand filter assembly; 301. Sand filter outer tank; 302. Sand filter tank water inlet pipe head; 303. Sand filter tank water outlet pipe head; 304. Sand filter inner tank support frame; 305. Sand filter inner tank; 306. Inner tank water inlet pipe; 307. Center duct; 308. Water guide cover; 309. Inner tank water outlet pipe; 310. Secondary water guide groove; 311. Filter screen; 312. Water guide platform; 4. Raw water main; 5. Main mounting frame; 6. Power distribution cabinet; 7. Filter membrane assembly mounting frame; 8. Filter membrane assembly; 801. Filter membrane assembly outer cylinder; 802. Upper mounting head; 803. Waterproof inner cylinder; 80 4. Inner tube water inlet head; 805. Water inlet hole; 806. Water filter baffle; 807. Baffle connecting hole; 808. Filter membrane support rod; 809. Filter membrane; 810. Filter membrane pressure-dividing hole; 811. First filter water outlet; 812. Second filter water outlet; 813. First outer tube clamping ring; 814. Second outer tube clamping ring; 815. Outer filter ring; 9. Secondary raw water pipe; 10. Sand filter backwash pipe; 11. Electronic valve; 12. Backwash pump mounting plate; 13. Backwash pump; 14. Filter pipe rack; 15. Filter raw water pipe; 16. Filter outlet pipe; 17. Tee joint; 18. Double-headed water inlet pipe; 19. Filter membrane outlet pipe. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. The embodiments of the present invention and all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] like Figures 1 to 3As shown, an embodiment of the present invention provides a landfill leachate treatment device for pollution control, including a power distribution cabinet 6 for equipment power distribution, a device base frame 1 is provided at the lower end of the power distribution cabinet 6, and a filter sand tank mounting frame 2 is integrally connected to the upper end of the device base frame 1 and located on one side of the power distribution cabinet 6, a filter sand tank mounting frame 2 is fixedly installed with a filter sand assembly 3 for primary coarse filtration, and a raw water main pipe 4 is fixedly connected to the upper end of the filter sand assembly 3, a plurality of main pipe mounting frames 5 are fixedly installed on the upper end of the device base frame 1, and the raw water main pipe 4 is installed on the upper end of the device base frame 1 through the main pipe mounting frame 5; a plurality of filter membrane assembly mounting frames 7 are fixedly installed on the upper end of the device base frame 1, and a filter membrane assembly 8 for secondary filtration is fixedly installed on each of the filter membrane assembly mounting frames 7.

[0044] Among them, the lower end of the sand filter assembly 3 is fixedly connected to a sand filter backwash pipe 10, and an electronic valve 11 is fixedly installed on the upper end of the sand filter backwash pipe 10. A backwash pump mounting plate 12 is fixedly installed at one end of the equipment base frame 1, and a backwash pump 13 is fixedly installed on the upper end surface of the backwash pump mounting plate 12; one end of the sand filter backwash pipe 10 is connected to the output port of the backwash pump 13, and one side of the sand filter backwash pipe 10 is integrally connected to a secondary raw water pipe 9; a number of filter pipe racks 14 are fixedly installed on the equipment base frame 1, and the filter pipe racks 14 are fixedly installed on the upper end surface of the backwash pump mounting plate 12. A filtered raw water pipe 15 and a filtered water outlet pipe 16 are fixedly installed, and several groups of three-way joints 17 are fixedly installed on the filtered raw water pipe 15 and the filtered water outlet pipe 16. Each group of three-way joints 17 has two and they are not connected to each other. The secondary raw water pipe 9 is connected to the filtered raw water pipe 15; the two interfaces of one of the three-way joints 17 in each group are connected to the filtered raw water pipe 15 and the other interface is connected to the double-headed water inlet pipe 18, and the two interfaces of the other three-way joints 17 in each group are connected to the filtered water outlet pipe 16 and the other interface is connected to the filter membrane outlet pipe 19.

[0045] Through the above technical solution, the raw water is pressurized and passed into the raw water main pipe 4, and enters the filter sand assembly 3 along the raw water main pipe 4. After filtering in the filter sand assembly 3, the colloidal viscous substances carried in the leachate can be filtered out, and along the channel of the filter sand backwash pipe 10 at the lower end and the secondary raw water pipe 9, from the double-headed water inlet pipe 18 on the filter raw water pipe 15, enter each filter membrane assembly 8 for fine filtration of small particles, and then converge from the middle filter membrane outlet pipe 19 to the filter outlet pipe 16 to enter the next treatment process.

[0046] like Figure 1 、 Figures 4 to 6As shown, the sand filter assembly 3 includes: a sand filter outer tank 301, a sand filter tank water inlet pipe head 302, a sand filter tank water outlet pipe head 303, a sand filter inner tank support frame 304, a sand filter inner tank 305, an inner tank water inlet pipe 306, a central conduit 307, a water guide cover 308, an inner tank water outlet pipe 309, a secondary water guide groove 310, a filter screen 311 and a water guide platform 312; the sand filter outer tank 301 is fixedly installed on the sand filter tank mounting frame 2, the sand filter outer tank 301 is integrated with the sand filter tank water inlet pipe head 302 at the upper end, and the sand filter outer tank 301 is integrated with the sand filter tank water outlet pipe head 303 at the lower end; a plurality of sand filter inner tank support frames 304 are fixedly installed on the inner wall of the lower end of the sand filter outer tank 301, the sand filter inner tank 305 is fixedly installed on the upper end of the sand filter inner tank support frame 304, and the sand filter inner tank 30 An inner tank water inlet pipe 306 is provided on the side of the inner tank water inlet pipe 306, the inner end of which is fixedly connected to a central conduit 307, the lower end of which is fixedly connected to a water guide cover 308, the upper end of which is fixedly provided with an inner tank water outlet pipe 309, the upper end of which is fixedly installed with a secondary water guide groove 310, and the upper end of which is fixedly installed with a filter screen 311; a water guide platform 312 is integrally provided on the inner wall of the lower end of the sand filter inner tank 305, the upper end of the inner tank water inlet pipe 306 is connected to the sand filter tank water inlet pipe head 302, the upper end of which is connected to the raw water main 4, the lower end of the inner tank water outlet pipe 309 is connected to the sand filter tank water outlet pipe head 303, and the lower end of the sand filter tank water outlet pipe head 303 is connected to the sand filter backwash pipe 10.

[0047] Through the above technical solution, the quartz sand loaded in the filter sand inner tank 305 in the filter sand assembly 3 can effectively filter the viscous material, and the leachate is guided into the inner tank water inlet pipe 306 by the raw water main pipe 4, and then enters the central conduit 307. The leachate is guided to the edge of the filter sand inner tank 305 through the water guide cover 308 at the lower end, and after being filtered by the quartz sand therein, it passes through the filter screen 311 at the upper end, separates the carried quartz sand, and enters the inner tank water outlet pipe 309 from the secondary water guide groove 310, so that it can flow out. By guiding the liquid to the outer ring of the container through the water guide cover 308, the flow path in the filtration can be increased, so that the inner and outer rings form a cycle, the upper layer of liquid is taken out, and the filtering effect is enhanced, so that the colloidal viscous material in the liquid can be filtered.

[0048] like Figure 1 、 Figures 7 to 11As shown, the filter membrane assembly 8 includes: a filter membrane assembly outer cylinder 801, an upper mounting head 802, a water-proof inner cylinder 803, an inner cylinder water inlet head 804, a water inlet hole 805, a water filter baffle 806, a baffle connecting hole 807, a filter membrane support rod 808, a filter membrane 809, a filter membrane pressure dividing hole 810, a first filter water outlet 811, a second filter water outlet 812, a first outer cylinder clamping ring 813, a second outer cylinder clamping ring 814 and an outer filter ring 815; the upper end of the filter membrane assembly mounting frame 7 is fixedly installed with The outer cylinder 801 of the filter membrane assembly is provided with an upper mounting head 802 on the upper end of the outer cylinder 801 of the filter membrane assembly, and the lower end of the upper mounting head 802 is fixedly connected to the inner cylinder water inlet head 804, and the side of the inner cylinder water inlet head 804 is provided with a plurality of water inlet holes 805; the lower end of the inner cylinder water inlet head 804 is integrated with the water-proof inner cylinder 803, and the inner wall of the water-proof inner cylinder 803 is provided with a plurality of water filter baffles 806, and a plurality of filter membrane support rods 80 are provided between each two of the water filter baffles 806. 8. A filter membrane 809 is fixedly installed on the filter membrane support rod 808; each of the water filter partitions 806 is provided with a partition connection hole 807, and each of the filter membranes 809 is provided with a filter membrane pressure dividing hole 810; the lower end of the outer cylinder 801 of the filter membrane assembly is integrated with a first filter water outlet 811 and two second filter water outlets 812, the lower end of the inner wall of the outer cylinder 801 of the filter membrane assembly is fixed with a first outer cylinder clamping ring 813, and the lower end of the outer surface of the water-isolating inner cylinder 803 is integrated with a A second outer tube clamping ring 814 is provided, and several outer filter rings 815 are provided between the outer tube 801 of the filter membrane assembly and the water-proof inner tube 803. The upper end of the first filter water outlet 811 is connected to the water-proof inner tube 803, and the two second filter water outlets 812 are connected between the outer tube 801 of the filter membrane assembly and the water-proof inner tube 803. The lower end of the first filter water outlet 811 is connected to the filter membrane outlet pipe 19, and the lower ends of the two second filter water outlets 812 are respectively connected to the two joints of the double-headed water inlet pipe 18.

[0049] Through the above technical solution, the liquid is made to flow in an alternating direction between the inner circle and the outer circle through the water filter baffle 806 and the filter membrane 809 in the filter membrane assembly 8, which can enhance the filtering effect. First, the liquid after the above-mentioned first-level filtration is respectively passed into the two second filter outlets 812 through the two ports of the double-headed water inlet pipe 18, and then passes through the gap between the first outer tube clamping ring 813 and the second outer tube clamping ring 814 to perform the first filtration in this assembly, and then passes through the outer filter ring 815 of the outer circle to perform the second filtration, and enters the water-proof inner tube 803 from the water inlet hole 805 at the upper end, passes through the baffle connection hole 807 of the water filter baffle 806, and is filtered through the filter membrane 809. The liquid is filtered from the outside of the filter membrane 809 and then enters the lower layer, thereby enhancing the filtering effect. By opening the filter membrane pressure dividing hole 810 on the filter membrane 809, the water pressure of the filter membrane 809 can be reduced, the filtration speed can be increased, and it can also avoid passing through the filter membrane pressure dividing hole 810 after the filter membrane 809 of this layer is blocked.

[0050] Working principle:

[0051] The utility model first pressurizes raw water into the raw water main pipe 4, and then enters the filter sand assembly 3 along the raw water main pipe 4. After filtering in the filter sand assembly 3, the colloidal and viscous substances carried in the leachate can be filtered out. Then, along the channel of the filter sand backwash pipe 10 at the lower end and the secondary raw water pipe 9, the water enters each filter membrane assembly 8 from the double-headed water inlet pipe 18 on the filter raw water pipe 15 to finely filter small particles. After that, the water is merged from the middle filter membrane outlet pipe 19 to the filter outlet pipe 16 to enter the next treatment process.

[0052] Among them, the quartz sand loaded in the filter sand inner tank 305 in the filter sand assembly 3 can effectively filter viscous substances. The raw water main pipe 4 is used to guide the leachate into the inner tank water inlet pipe 306 and then into the central conduit 307. The leachate is guided to the edge of the filter sand inner tank 305 through the water guide cover 308 at the lower end. After being filtered by the quartz sand therein, it passes through the filter screen 311 at the upper end to separate the carried quartz sand and enter the inner tank outlet pipe 309 from the secondary water guide groove 310 so as to flow out. By guiding the liquid to the outer ring of the container through the water guide cover 308, the flow path during filtration can be increased, the inner and outer rings form a circulation, the upper liquid is taken out, the filtering effect is enhanced, and the colloidal viscous substances in the liquid can be filtered.

[0053] Among them, the water filtering partition 806 and the filter membrane 809 in the filter membrane assembly 8 make the liquid form an alternating flow direction of the inner circle and the outer circle, which can enhance the filtering effect. First, the liquid after the above-mentioned first-level filtration is respectively passed into the two second filter outlets 812 through the two ports of the double-headed water inlet pipe 18, and then passes through the gap between the first outer cylinder clamping ring 813 and the second outer cylinder clamping ring 814 to perform the first filtration in this assembly, and then passes through the outer filter ring 815 of the outer circle for the second filtration, enters the water-proof inner cylinder 803 from the water inlet hole 805 at the upper end, passes through the partition connection hole 807 of the water filtering partition 806, and is filtered through the filter membrane 809. The liquid is filtered from the outside of the filter membrane 809 and then enters the lower layer, thereby enhancing the filtering effect. By opening the filter membrane pressure dividing hole 810 on the filter membrane 809, the water pressure of the filter membrane 809 can be reduced, the filtration speed can be increased, and it can also avoid passing through the filter membrane pressure dividing hole 810 after the filter membrane 809 of this layer is blocked.

[0054] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A landfill leachate treatment device for pollution control, comprising a power distribution cabinet (6) for distributing power to equipment, characterized in that: The lower end of the power distribution cabinet (6) is provided with an equipment base frame (1), the upper end of the equipment base frame (1) and located on one side of the power distribution cabinet (6) is integrally connected with a filter sand tank mounting frame (2), a filter sand assembly (3) for primary coarse filtration is fixedly mounted on the filter sand tank mounting frame (2), the upper end of the filter sand assembly (3) is fixedly connected with a raw water main (4), the upper end of the equipment base frame (1) is fixedly mounted with a plurality of main pipe mounting frames (5), and the raw water main (4) is mounted on the upper end of the equipment base frame (1) through the main pipe mounting frames (5); A plurality of filter membrane assembly mounting frames (7) are fixedly mounted on the upper end of the equipment base frame (1), and a filter membrane assembly (8) for secondary filtration is fixedly mounted on each of the filter membrane assembly mounting frames (7).

2. The landfill leachate treatment device for pollution control according to claim 1, characterized in that: The lower end of the sand filter assembly (3) is fixedly connected to a sand filter backwash pipe (10), an electronic valve (11) is fixedly installed on the upper portion of the sand filter backwash pipe (10), one end of the equipment base frame (1) is fixedly installed with a backwash pump mounting plate (12), and a backwash pump (13) is fixedly installed on the upper end surface of the backwash pump mounting plate (12); One end of the sand filter backwash pipe (10) is connected to the output port of the backwash pump (13).

3. The landfill leachate treatment device for pollution control according to claim 2, characterized in that: One side of the sand filter backwash pipe (10) is integrally connected to a secondary raw water pipe (9); A plurality of filter tube racks (14) are fixedly mounted on the equipment base frame (1), a filter raw water pipe (15) and a filter outlet pipe (16) are fixedly mounted on the filter tube rack (14), and a plurality of groups of three-way joints (17) are fixedly mounted on the filter raw water pipe (15) and the filter outlet pipe (16), each group of three-way joints (17) having two and not connected to each other.

4. The landfill leachate treatment device for pollution control according to claim 3, characterized in that: The secondary raw water pipe (9) is connected to the filtered raw water pipe (15); Two interfaces of one of the three-way connectors (17) in each group are connected to the filtered raw water pipe (15) and the other interface is connected to the double-headed water inlet pipe (18); two interfaces of another three-way connector (17) in each group are connected to the filtered water outlet pipe (16) and the other interface is connected to the filter membrane water outlet pipe (19).

5. The landfill leachate treatment device for pollution control according to claim 4, characterized in that: The sand filter assembly (3) comprises: a sand filter outer tank (301), a sand filter tank water inlet pipe head (302), a sand filter tank water outlet pipe head (303), a sand filter inner tank support frame (304), a sand filter inner tank (305), an inner tank water inlet pipe (306), a central conduit (307), a water guide cover (308), an inner tank water outlet pipe (309), a secondary water guide groove (310), a filter screen (311) and a water guide platform (312); A sand filter outer tank (301) is fixedly mounted on the sand filter tank mounting frame (2); a sand filter tank water inlet pipe head (302) is integrally provided at the upper end of the sand filter outer tank (301); and a sand filter tank water outlet pipe head (303) is integrally provided at the lower end of the sand filter outer tank (301); A plurality of sand filter inner tank support frames (304) are fixedly mounted on the inner wall of the lower end of the sand filter outer tank (301); a sand filter inner tank (305) is fixedly mounted on the upper end of the sand filter inner tank support frame (304); an inner tank water inlet pipe (306) is provided on the side of the sand filter inner tank (305); the inner end of the inner tank water inlet pipe (306) is fixedly connected to a central conduit (307); the lower end of the central conduit (307) is fixedly connected to a water guide cover (308); the upper end of the central conduit (307) is fixedly mounted with an inner tank water outlet pipe (309); the upper end of the inner tank water outlet pipe (309) is fixedly mounted with a secondary water guide groove (310); and the upper end of the secondary water guide groove (310) is fixedly mounted with a filter screen (311); A water guide platform (312) is integrally provided on the inner wall of the lower end of the sand filter inner tank (305).

6. The landfill leachate treatment device for pollution control according to claim 5, characterized in that: The upper end of the inner tank water inlet pipe (306) is connected to the sand filter tank water inlet pipe head (302), and the upper end of the sand filter tank water inlet pipe head (302) is connected to the raw water main pipe (4).

7. The landfill leachate treatment device for pollution control according to claim 6, characterized in that: The lower end of the inner tank water outlet pipe (309) is connected to the sand filter tank water outlet pipe head (303), and the lower end of the sand filter tank water outlet pipe head (303) is connected to the sand filter backwash pipe (10).

8. The landfill leachate treatment device for pollution control according to claim 7, characterized in that: The filter membrane assembly (8) comprises: a filter membrane assembly outer cylinder (801), an upper mounting head (802), a water-isolating inner cylinder (803), an inner cylinder water inlet head (804), a water inlet hole (805), a water filtration baffle (806), a baffle connecting hole (807), a filter membrane support rod (808), a filter membrane (809), a filter membrane pressure-dividing hole (810), a first filter water outlet (811), a second filter water outlet (812), a first outer cylinder clamping ring (813), a second outer cylinder clamping ring (814), and an outer filter ring (815); The upper end of the filter membrane assembly mounting frame (7) is fixedly mounted with a filter membrane assembly outer cylinder (801), the upper end of the filter membrane assembly outer cylinder (801) is integrally provided with an upper mounting head (802), the lower end of the upper mounting head (802) is fixedly connected to an inner cylinder water inlet head (804), and a plurality of water inlet holes (805) are provided on the side of the inner cylinder water inlet head (804); The lower end of the inner cylinder water inlet head (804) is integrally connected to a water-isolating inner cylinder (803), and a plurality of water filtering baffles (806) are integrally provided on the inner wall of the water-isolating inner cylinder (803). A plurality of filter membrane support rods (808) are provided between every two of the water filtering baffles (806), and a filter membrane (809) is fixedly installed on the filter membrane support rods (808); Each of the water filtering partitions (806) is provided with a partition connection hole (807), and each of the filtering membranes (809) is provided with a filtering membrane pressure dividing hole (810); The lower end of the outer cylinder (801) of the filter membrane assembly is integrally provided with a first filter water outlet (811) and two second filter water outlets (812); the lower end of the inner wall of the outer cylinder (801) of the filter membrane assembly is fixedly installed with a first outer cylinder clamping ring (813); the lower end of the outer surface of the water-proof inner cylinder (803) is integrally provided with a second outer cylinder clamping ring (814); and a plurality of outer filter rings (815) are provided between the outer cylinder (801) of the filter membrane assembly and the water-proof inner cylinder (803).

9. The landfill leachate treatment device for pollution control according to claim 8, characterized in that: The upper end of the first filter water outlet (811) is connected to the water-proof inner cylinder (803), and the two second filter water outlets (812) are connected to the outer cylinder (801) of the filter membrane assembly and the water-proof inner cylinder (803).

10. The landfill leachate treatment device for pollution control according to claim 9, characterized in that: The lower end of the first filter water outlet (811) is connected to the filter membrane outlet pipe (19), and the lower ends of the two second filter water outlets (812) are respectively connected to the two joints of the double-headed water inlet pipe (18).

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