Landfill leachate treatment equipment

Abstract

The invention relates to the technical field of garbage treatment, and discloses garbage leachate treatment equipment which comprises a shell, an adjusting tank, a first reaction tank, a second reaction tank and a sedimentation tank are sequentially arranged at the left end of the shell from back to front, an anaerobic tank and an aerobic tank are arranged in the middle of the shell, the anaerobic tank is located on the left side of the aerobic tank, and the aerobic tank is located on the right side of the shell. A medicament pool is arranged in the right end of the shell; a filtering assembly is arranged in the aerobic tank; aeration assemblies are arranged in the regulating tank and the aerobic tank, and a chemical adding assembly is arranged in the chemical tank. By arranging the adjusting tank, the first reaction tank, the second reaction tank, the sedimentation tank, the anaerobic tank, the aerobic tank and the filter assembly in the shell, the integration degree is high, and the landfill leachate is treated by adding sodium hydroxide and a deodorant into the adjusting tank, adding PAC into the first reaction tank and adding PAM into the second reaction tank. The landfill leachate is treated by anaerobic bacteria and aerobic bacteria, so that the purpose of treating the landfill leachate is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of garbage treatment, in particular to garbage leachate treatment equipment. Background Art

[0002] Urban garbage transfer stations are generally built in various areas of the city to reduce investment and transportation costs. A large amount of filtrate will be produced during the garbage compression process, and the amount of filtrate, pollutant composition and concentration vary greatly with the garbage composition, seasonal climate (including temperature, humidity, cloudy and sunny, rainy and snowy factors, etc.), high concentration of organic pollutants, complex composition, and direct discharge will cause secondary pollution. However, most of the sewage from compression stations in cities across the country is now discharged directly without treatment. During the discharge process, a large amount of odor will be released and overflow from various sewage wells, affecting the surrounding environment.

[0003] In addition, when treating the garbage filter press liquid, sodium hydroxide needs to be added to adjust the pH of the filter press liquid, and a deodorant needs to be added for deodorization, and then PAC and PAM are added in sequence for flocculation treatment, and then the filter press liquid flows into the anaerobic tank and the aerobic tank in turn, and the organic matter in the filter press liquid is decomposed by anaerobic bacteria and aerobic bacteria. Finally, it needs to be filtered to make the filter press liquid meet the discharge standards. However, in the above treatment process, multiple treatment tanks or other containers for storing the filter press liquid need to be set up, and the space required is also large, so further improvements can be made. Summary of the invention

[0004] Technical issues solved: In view of the shortcomings of the prior art, the present invention provides a garbage leachate treatment equipment, which has the advantages of treating the filtrate and a high degree of integration of the treatment device, thereby solving the problems of direct discharge of the filtrate affecting the surrounding environment and the large area occupied by the treatment pool.

[0005] Technical solution: In order to achieve the above-mentioned purpose of treating the filtrate with a high degree of integration of the treatment device, the present invention provides the following technical solutions: a garbage leachate treatment equipment, comprising an outer shell, a regulating tank, a reaction tank one, a reaction tank two and a sedimentation tank are arranged in sequence at the left end of the outer shell from back to front, an anaerobic tank and an aerobic tank are arranged in the middle of the outer shell, the anaerobic tank is located on the left side of the aerobic tank, and a reagent tank is arranged in the right end of the outer shell; the garbage leachate flows through the regulating tank, the reaction tank one, the reaction tank two, the sedimentation tank, the anaerobic tank, and the aerobic tank in sequence, and a filtering component is arranged in the aerobic tank; an aeration component is arranged in the regulating tank and the aerobic tank, and a dosing component is arranged in the reagent tank.

[0006] Preferably, the regulating tank and reaction tank one are separated by partition one, and the reaction tank one and reaction tank two are separated by partition two, and the top of the outer shell, the top of partition one and the top of partition two are lowered in sequence; the left inner wall and the right inner wall of the reaction tank two are fixedly installed with slide rails, the slide rails penetrate the partition two, and the rear end of the slide rails is fixedly installed on the surface of the partition one, and a guide rod is fixedly installed on the upper surface of the slide rails, and the guide rod is in the reaction tank two; a floating plate is slidably connected to the guide rod, and a plurality of leakage holes are penetrated on the surface of the floating plate, and a submersible sewage pump is fixedly installed on the bottom of the floating plate, and a connecting pipe one is connected to the top output end of the submersible sewage pump, and the other end of the connecting pipe one is connected to the left side of the sedimentation tank, and the connecting pipe one is connected to the sedimentation tank.

[0007] Preferably, the two groups of slide rails are slidably connected with a slide seat at the bottom, and a slot is penetrated on the partition plate two, and the slide seat is slidably connected in the slot; a threaded ring is fixedly installed on the middle part of the left side of the slide seat, and a guide groove is provided on the left side of the shell, and the guide groove is connected with reaction tank one and reaction tank two, and the threaded ring is slidably connected in the threaded ring; a sealing cover is fixedly installed on the left side of the shell, and a threaded rod is arranged inside the sealing cover along its length direction, the threaded ring is threadedly connected with the threaded rod, and a motor one is fixedly installed at one end of the threaded rod; a mud discharge pipe one is fixedly installed on the lower part of the left side of the shell, and the mud discharge pipe one is connected with reaction tank one, and a valve one is arranged on the mud discharge pipe one; a mud discharge pipe two is fixedly installed on the lower part of the left side of the shell, and the mud discharge pipe two is connected with reaction tank two, and a valve two is arranged on the mud discharge pipe two; two groups of air intake pipes are fixedly installed in the middle part of the left side of the shell, and the two groups of air intake pipes are respectively connected with reaction tank one and reaction tank two, and the top of the air intake pipe is flush with the top of the partition plate one.

[0008] Preferably, a filtering inclined tube is embedded in the middle of the sedimentation tank, and a plurality of filter holes are opened through the top of the filtering inclined tube. The filter holes are inclined, and the cross-section of the filter holes is a regular hexagon. An embedding groove is opened on the top right side of the sedimentation tank, and the sedimentation tank is connected with the anaerobic tank through the embedding groove, and a filter screen is inserted in the embedding groove.

[0009] Preferably, a diversion port is opened on the top right side of the anaerobic tank, and the anaerobic tank is connected with the aerobic tank through the diversion port; a support plate is fixedly installed on the inner wall of the anaerobic tank, a grid frame is placed on the top of the support plate, a plurality of support rods 1 are fixedly installed on the grid frame, and a plastic strip 1 is fixedly installed on the support rod 1.

[0010] Preferably, a mounting frame 1 is placed inside the aerobic pool, a plurality of support rods 2 are fixedly installed inside the mounting frame 1, the support rods 2 are provided with plastic disks in an array along their length direction, and the plastic disks are provided with plastic strips 2 in an array on their circumferential surfaces.

[0011] Preferably, the filtration assembly includes a mounting frame 2 placed in the aerobic tank, a guide box is fixedly installed on the top of the mounting frame 2, a plurality of MBR membranes are fixedly installed on the bottom of the guide box, the MBR membranes are connected to the guide box, and a suction pipe is fixedly installed on the top of the guide box.

[0012] Preferably, the aeration assembly includes a blower, the output end of the blower is connected to a four-way pipe, the other three ends of the four-way pipe are connected to connecting pipe 2, and the other end of connecting pipe 2 is connected to an aeration plate; one of the aeration plates on the left is placed in the regulating tank, and the two aeration plates on the right are placed in the aerobic tank, and the two aeration plates on the right are fixed in mounting frame 1.

[0013] Preferably, the dosing component includes four groups of pump casings, an impeller is rotatably connected inside the pump casing, a connecting shaft is fixedly installed at the top center of the impeller, the connecting shaft passes through the top center of the pump casing, the impeller is connected to a sprocket through the connecting shaft, the four groups of sprockets are connected by chain belts, and the center of the rearmost sprocket is connected to motor 2; the input end of the pump casing is connected to a drug inlet pipe, and the output end of the pump casing is connected to a drug outlet pipe; the reagent pool is equally divided into four parts, and from back to front they are: sodium hydroxide bin, deodorant bin, PAC bin, PAM bin, the four groups of drug inlet pipes are respectively inserted in the sodium hydroxide bin, deodorant bin, PAC bin and PAM bin; the four groups of drug outlet pipes are inserted in reaction tank 2, reaction tank 1, the front half of the regulating tank, and the back half of the regulating tank from front to back.

[0014] Beneficial effects: Compared with the prior art, the present invention provides a landfill leachate treatment equipment, which has the following beneficial effects: 1. The landfill leachate treatment equipment has a high degree of integration by arranging a regulating tank, a first reaction tank, a second reaction tank, a sedimentation tank, an anaerobic tank, an aerobic tank and a filtering component in a shell, and treats the landfill leachate by adding sodium hydroxide and a deodorant into the regulating tank, adding PAC into the first reaction tank, and adding PAM into the second reaction tank. After the landfill leachate is filtered, it enters the anaerobic tank and the aerobic tank in sequence. The landfill leachate is treated by anaerobic bacteria and aerobic bacteria to decompose organic matter in the landfill leachate. Finally, the landfill leachate is filtered by the filtering component to achieve the purpose of treating the landfill leachate. 2. The garbage leachate treatment equipment drives the threaded rod to rotate through the motor 1, driving the threaded ring and the slide seat to slide along the slide rail until the slide seat fits on the front inner wall of the reaction tank 2. The slide seat divides the reaction tank 2 into two parts, the upper and lower parts, and the valve 2 is adjusted to discharge the large alum flocs in the lower half of the reaction tank 2 from the mud discharge pipe 2; thereby achieving the purpose of facilitating the discharge of flocculants generated in the process of garbage leachate treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the three-dimensional structure of a landfill leachate treatment device proposed by the present invention; Figure 2 A schematic diagram of the three-dimensional structure inside the shell of a garbage leachate treatment equipment proposed by the present invention; Figure 3 A schematic diagram of the top view of a landfill leachate treatment device proposed by the present invention; Figure 4 This is a schematic diagram of a three-dimensional cutaway structure at the left end of a housing of a garbage leachate treatment device proposed by the present invention; Figure 5 This is a schematic diagram of the three-dimensional assembly structure of the slide rail and the slide seat of the garbage leachate treatment equipment proposed by the present invention; Figure 6 A schematic diagram of the three-dimensional structure inside a reaction tank 2 of a landfill leachate treatment equipment proposed by the present invention; Figure 7 This is a schematic diagram of a three-dimensional cutaway structure of a housing of a garbage leachate treatment device proposed by the present invention; Figure 8 A landfill leachate treatment equipment proposed by the present invention Figure 7 A is a schematic diagram of the enlarged structure of the details; Fig. 9 This is a schematic diagram of the internal three-dimensional structure of an anaerobic tank of a landfill leachate treatment equipment proposed by the present invention; Fig.10 A schematic diagram of the internal three-dimensional structure of an aerobic tank of a landfill leachate treatment equipment proposed by the present invention; Fig.11 A schematic diagram of the three-dimensional structure of a filter assembly of a landfill leachate treatment device proposed by the present invention; Fig.12 This is a schematic diagram of the three-dimensional structure of an aeration component of a landfill leachate treatment equipment proposed by the present invention; Fig.13 This is a schematic diagram of the three-dimensional structure of a dosing component of a landfill leachate treatment equipment proposed by the present invention; Fig.14 This is a schematic diagram of the three-dimensional assembly structure of a pump casing and an impeller of a landfill leachate treatment equipment proposed by the present invention.

[0016] In the figure: 100, housing; 200, regulating tank; 300, reaction tank 1; 400, reaction tank 2; 500, sedimentation tank; 600, anaerobic tank; 700, aerobic tank; 800, filtration component; 900, reagent tank; 1000, aeration component; 1100, dosing component; Partition 1; 401, partition 2; 402, slide rail; 403, guide rod; 404, floating plate; 405, submersible sewage pump; 406, connecting pipe 1; 407, slide seat; 408, slot; 409, threaded collar; 410, guide groove; 411, sealing cover; 412, threaded rod; 413, motor 1; 414, mud discharge pipe 1; 415, valve 1; 416, mud discharge pipe 2; 417, valve 2; 418, air intake pipe; Filter inclined tube; 502, embedded groove; 503, filter screen; diversion port; 602, support plate; 603, grid frame; 604, support rod one; 605, plastic strip one; Mounting frame 1; 702, support rod 2; 703, plastic plate; 704, plastic strip 2; Mounting frame 2; 802, guide box; 803, MBR membrane; 804, suction pipe; Blower; 1002, four-way pipe; 1003, connecting pipe 2; 1004, aeration plate; Pump casing; 1102, impeller; 1103, sprocket; 1104, chain belt; 1105, motor 2; 1106, medicine inlet pipe; 1107, medicine outlet pipe. DETAILED DESCRIPTION

[0017] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0018] 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 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 creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 3A landfill leachate treatment equipment comprises a shell 100, wherein a regulating tank 200, a reaction tank 1 300, a reaction tank 2 400 and a sedimentation tank 500 are sequentially arranged at the left end of the shell 100 from back to front, an anaerobic tank 600 and an aerobic tank 700 are arranged in the middle of the shell 100, the anaerobic tank 600 is located on the left side of the aerobic tank 700, and a reagent tank 900 is arranged in the right end of the shell 100; the landfill leachate flows through the regulating tank 200, the reaction tank 1 300, the reaction tank 2 400, the sedimentation tank 500, the anaerobic tank 600 and the aerobic tank 700 in sequence, and a filtering component 800 is arranged in the aerobic tank 700; an aeration component 1000 is arranged in the regulating tank 200 and the aerobic tank 700.

[0020] A dosing component 1100 is provided in the reagent pool 900. The reagent pool 900 is equally divided into four parts, and from back to front, they are: sodium hydroxide bin, deodorant bin, PAC bin, and PAM bin. Sodium hydroxide is added to the regulating pool 200 through the reagent pool 900 to adjust the pH of the landfill leachate and the pH value of the sewage. The pH of the raw water is 4-5, and the pH required by the flocculant is 5.6-8. The deodorant is added to the regulating pool 200 through the reagent pool 900, and the landfill leachate is deodorized. Then, PAC and PAM are added to the reaction pool 1 300 and the reaction pool 2 400 respectively through the reagent pool 900. PAC combines with colloidal suspended particles or milky pollutants that are difficult to precipitate in the water in the reaction pool 1 300 to form small alum flowers. Afterwards, when the landfill leachate flows into the reaction pool 2 400, PAM causes the small alum flowers to aggregate into large alum flowers.

[0021] See also Figure 4 , the regulating tank 200 and the reaction tank 1 300 are separated by the partition 1 301, and the reaction tank 1 300 and the reaction tank 2 400 are separated by the partition 2 401, and the top of the housing 100, the top of the partition 1 301 and the top of the partition 2 401 are successively lowered. When the liquid level of the garbage leachate in the regulating tank 200 exceeds the top of the partition 1 301, the garbage leachate flows into the reaction tank 1 300; when the liquid level of the garbage leachate in the reaction tank 1 300 exceeds the top of the partition 2 401, the garbage leachate flows into the reaction tank 2 400.

[0022] The left inner wall and the right inner wall of the reaction tank 2 400 are fixedly installed with a slide rail 402, which penetrates the partition 2 401, and the rear end of the slide rail 402 is fixedly installed on the surface of the partition 1 301. A guide rod 403 is fixedly installed on the upper surface of the slide rail 402, and the guide rod 403 is in the reaction tank 2 400. A floating plate 404 is slidably connected to the guide rod 403, and a plurality of water leakage holes are opened on the surface of the floating plate 404. A submersible sewage pump 405 is fixedly installed at the bottom of the floating plate 404, and a connecting pipe 1 406 is connected to the top output end of the submersible sewage pump 405. The other end of the connecting pipe 1 406 is connected to the left side of the sedimentation tank 500, and the connecting pipe 1 406 is connected to the sedimentation tank 500. The floating plate 404 floats on the liquid surface inside the reaction tank 2 400, so that the submersible sewage pump 405 is in the supernatant inside the reaction tank 2 400, and the submersible sewage pump 405 and the connecting pipe 1 406 cooperate to transport the supernatant inside the reaction tank 2 400 to the lower half of the sedimentation tank 500.

[0023] The bottom of the two sets of slide rails 402 are slidably connected with a slide seat 407, and a slot 408 is provided through the partition plate 401, and the slide seat 407 is slidably connected in the slot 408. The upper surface of the slide seat 407 is provided with a mounting groove with an isosceles trapezoidal cross section, and the cross section of the lower half of the slide rail 402 is adapted to the cross section of the mounting groove, and the lower half of the slide rail 402 is located in the slot 408. When the slide seat 407 slides along the slide rail 402 and fits on the front inner wall of the reaction pool 2 400, the slide seat 407 divides the reaction pool 2 400 into two upper and lower parts. When the slide seat 407 slides to fit on the rear inner wall of the reaction pool 1 300, the slide seat 407 divides the reaction pool 1 300 into two upper and lower parts.

[0024] A threaded collar 409 is fixedly installed in the middle of the left side of the slide 407, and a guide groove 410 is provided on the left side of the shell 100. The guide groove 410 is connected with the reaction pool 1 300 and the reaction pool 2 400, and the threaded collar 409 is slidably connected in the threaded collar 409. A sealing cover 411 is fixedly installed on the left side of the shell 100, and the sealing cover 411 seals the opening of the guide groove 410. A threaded rod 412 is arranged inside the sealing cover 411 along its length direction, and the threaded collar 409 is threadedly connected with the threaded rod 412, and a motor 1 413 is fixedly installed at one end of the threaded rod 412. The threaded rod 412 is driven to rotate by the motor 1 413, and the threaded collar 409 and the slide 407 are driven to slide along the slide rail 402.

[0025] A mud discharge pipe 1 414 is fixedly installed at the lower left side of the housing 100, and the mud discharge pipe 1 414 is connected to the reaction tank 1 300, and a valve 1 415 is arranged on the mud discharge pipe 1 414. When the slide 407 separates the reaction tank 1 300 into two parts, the flocculants in the lower half of the reaction tank 1 300 are discharged through the mud discharge pipe 1 414 by adjusting the valve 1 415. A mud discharge pipe 2 416 is fixedly installed at the lower left side of the housing 100, and the mud discharge pipe 2 416 is connected to the reaction tank 2 400, and a valve 2 417 is arranged on the mud discharge pipe 2 416. When the slide 407 separates the reaction tank 2 400 into two parts, the flocculants in the lower half of the reaction tank 2 400 are discharged through the mud discharge pipe 2 416 by adjusting the valve 2 417.

[0026] In actual operation, the valve 415 is used to keep the mud discharge pipe 414 in a sealed state for a long time, so that the small alum flowers inside the reaction pool 300 flow into the reaction pool 2 400. When the small alum flowers form large alum flowers under the action of PAM, they are discharged through the mud discharge pipe 416. When there are too many small alum flowers inside the reaction pool 300, the slide seat 407 is used to separate the reaction pool 300 into two parts, and then the small alum flowers at the bottom of the reaction pool 300 are discharged through the mud discharge pipe 414.

[0027] Two groups of air inlet pipes 418 are fixedly installed in the middle of the left side of the housing 100. The two groups of air inlet pipes 418 are connected to the reaction pool 1 300 and the reaction pool 2 400 respectively. The top of the air inlet pipe 418 is flush with the top of the partition 1 301. Through the arrangement of the air inlet pipe 418, external air can enter the lower half of the reaction pool 1 300 or the lower half of the reaction pool 2 400, ensuring that the flocculants in the lower half of the reaction pool 1 300 or the lower half of the reaction pool 2 400 can be discharged stably.

[0028] See also Figure 7-Figure 8 A filtering inclined tube 501 is embedded in the middle of the sedimentation tank 500, and a plurality of filter holes are opened through the top of the filtering inclined tube 501. The filter holes are inclined, and the cross-section of the filter holes is a regular hexagon. A groove 502 is opened on the top of the right side of the sedimentation tank 500, and the sedimentation tank 500 is connected to the anaerobic tank 600 through the groove 502. A filter screen 503 is inserted in the groove 502. The filtering effect of the filtering inclined tube 501 and the filter screen 503 on the landfill leachate prevents the alum flowers in the landfill leachate from entering the anaerobic tank 600.

[0029] See also Figure 7 and Fig. 9A diversion port 601 is provided on the top right side of the anaerobic tank 600, and the anaerobic tank 600 is connected to the aerobic tank 700 through the diversion port 601; a support plate 602 is fixedly installed on the inner wall of the anaerobic tank 600, and a grid frame 603 is placed on the top of the support plate 602. A plurality of support rods 604 are fixedly installed on the grid frame 603, and a plastic strip 605 is fixedly installed on the support rod 604. The plastic strip 605 is used to attach anaerobic bacteria. The anaerobic bacteria release extracellular enzymes in the anaerobic tank 600 to cause the organic matter to undergo four stages of hydrolysis, acidification, acetic acid production and methanogenesis, so that the high molecular organic matter in the sewage is decomposed into small molecules, and the organic matter in the wastewater is removed.

[0030] In the hydrolysis stage, high molecular weight organic matter cannot be directly used by bacteria due to its huge relative molecular weight. In this stage, they are decomposed into small molecules by bacterial extracellular enzymes. For example, cellulose is hydrolyzed into cellobiose and glucose, and starch is decomposed into maltose and glucose.

[0031] In the acidification stage, dissolved organic matter is converted into end products mainly composed of volatile fatty acids. In this stage, the above small molecular compounds are converted into simpler compounds in the cells of acidifying bacteria and secreted outside the cells. The main products of this stage are volatile fatty acids, alcohols, lactic acid, carbon dioxide, hydrogen, ammonia, hydrogen sulfide, etc.

[0032] In the acetogenic stage, under the action of hydrogen-producing acetogenic bacteria, the products of the previous stage are further converted into acetic acid, hydrogen, carbonic acid and new cellular substances.

[0033] In the methanogenic phase, acetic acid, hydrogen, carbonic acid, formic acid, and methanol are converted to methane, carbon dioxide, and new cellular material. The conversion of acetic acid, acetate, and hydrogen to methane by methanogens is accomplished by two physiologically distinct methanogens, one group converting hydrogen and carbon dioxide to methane, and the other group producing methane from acetic acid or acetate by decarboxylation.

[0034] See also Fig.10 A mounting frame 701 is placed inside the aerobic pool 700, and a plurality of support rods 702 are fixedly installed inside the mounting frame 701. The support rods 702 are provided with plastic plates 703 in array along their length, and plastic strips 704 are arranged in array on the circumference of the plastic plates 703. The plastic strips 704 are used to attach aerobic bacteria, and the aerobic bacteria decompose organic matter in the sewage into inorganic salts.

[0035] See also Fig.11The filter assembly 800 includes a mounting frame 801 placed in the aerobic tank 700, a guide box 802 is fixedly installed on the top of the mounting frame 801, a plurality of MBR membranes 803 are fixedly installed on the bottom of the guide box 802, the MBR membrane 803 is connected to the guide box 802, and a suction pipe 804 is fixedly installed on the top of the guide box 802. The other end of the suction pipe 804 is connected to a suction pump. The MBR membrane 803 filtration can effectively intercept the activated sludge and macromolecular organic matter in the system, and can achieve deep purification of sewage while retaining microorganisms with a long generation cycle.

[0036] See also Fig.12 The aeration assembly 1000 includes a blower 1001, the output end of the blower 1001 is connected to a four-way pipe 1002, the other three ends of the four-way pipe 1002 are connected to a connecting pipe 1003, and the other end of the connecting pipe 1003 is connected to an aeration plate 1004; an aeration plate 1004 on the left is placed in the regulating tank 200, and two aeration plates 1004 on the right are placed in the aerobic tank 700, and the two aeration plates 1004 on the right are fixed in the mounting frame 1 701. Air is introduced into the regulating tank 200 through the aeration plate 1004 on the left to perform pre-aeration treatment, so as to prevent the precipitation and hardening of suspended matter in the sewage, which causes the effective water storage capacity of the regulating tank 200 to be reduced, and to reduce the stench of sewage in the anaerobic state of the regulating tank 200, and at the same time, it can play a role in stripping ammonia nitrogen. Air is introduced into the mounting frame 1 701 through the two groups of aeration plates 1004 on the right to provide sufficient oxygen for the survival of aerobic bacteria.

[0037] See also Figure 13-14 The dosing assembly 1100 includes four groups of pump casings 1101, and an impeller 1102 is rotatably connected in the pump casing 1101. A connecting shaft is fixedly installed at the top center of the impeller 1102, and the connecting shaft runs through the top center of the pump casing 1101. The impeller 1102 is connected to a sprocket 1103 through the connecting shaft. The four groups of sprockets 1103 are connected through a chain belt 1104, and the center of the rear sprocket 1103 is connected to a motor 2 1105. The rear sprocket 1103 is driven to rotate by the motor 2 1105, and the transmission effect of the chain belt 1104 drives the other three groups of sprockets 1103 to rotate, thereby driving the four groups of impellers 1102 to rotate. The input end of the pump casing 1101 is connected to a drug inlet pipe 1106, and the output end of the pump casing 1101 is connected to a drug outlet pipe 1107. Four groups of drug inlet pipes 1106 are respectively inserted into the sodium hydroxide bin, the deodorant bin, the PAC bin and the PAM bin; four groups of drug outlet pipes 1107 are sequentially inserted into the reaction tank 2 400, the reaction tank 1 300, the front half of the regulating tank 200 and the rear half of the regulating tank 200 from front to back. Thus, sodium hydroxide and deodorant are transported to the regulating tank 200, PAC is transported to the reaction tank 1 300, and PAM is transported to the reaction tank 2 400.

[0038] When in use, firstly, the garbage leachate is added into the regulating tank 200. When the liquid level of the leachate in the regulating tank 200 exceeds the partition 1 301, the garbage leachate flows into the reaction tank 1 300 by itself; when the liquid level in the reaction tank 1 300 exceeds the partition 2 401, the garbage leachate flows into the reaction tank 2 400 by itself; the leachate floats on the liquid level in the reaction tank 2 400 through the floating plate 404, and the submersible sewage pump 405 cooperates with the connecting pipe 1 406 to suck the supernatant of the garbage leachate into the sedimentation tank 500; then, the garbage leachate in the sedimentation tank 500 passes through the filter screen 503 and enters the anaerobic tank 600, and then, the garbage leachate passes through the diversion port 601 and enters the aerobic tank 700; The rear sprocket 1103 is driven to rotate by the second motor 1105, and the transmission function of the chain belt 1104 is coordinated to drive the four sets of impellers 1102 to rotate, so that the sodium hydroxide, deodorant, PAC and PAM in the reagent pool 900 are sucked out through the four sets of drug inlet pipes 1106, and the sodium hydroxide and deodorant are transported to the regulating pool 200 through the four sets of drug outlet pipes 1107, and the PAC is transported to the reaction pool 1 300, and the PAM is transported to the reaction pool 2 400; At the same time, the blower 1001 delivers air to the cross-tube 1002, and cooperates with the connecting function of the connecting pipe 1003 to allow the left set of aeration discs 1004 to pass air into the regulating tank 200, and the right two sets of aeration discs 1004 to pass air into the mounting frame 1 701; The leachate in the regulating tank 200 is regulated in pH by sodium hydroxide, and deodorized by a deodorant. Then, under the action of PAC, the colloidal suspended particles or emulsion pollutants that are difficult to precipitate in the leachate are combined to form small alum flowers, and then, under the action of PAM, the small alum flowers are aggregated into large alum flowers. The threaded rod 412 is driven to rotate by the motor 1 413, driving the threaded collar 409 and the slide 407 to slide along the slide rail 402 until the slide 407 is attached to the front inner wall of the reaction tank 2 400. The slide 407 separates the reaction tank 2 400 into two parts, the upper and lower parts. The valve 2 417 is adjusted to discharge the large alum flowers in the lower half of the reaction tank 2 400 from the mud discharge pipe 2 416. After the garbage leachate enters the anaerobic tank 600, the anaerobic bacteria cause the organic matter to undergo four stages of hydrolysis, acidification, acetic acid production and methanogenesis; after the garbage leachate enters the aerobic tank 700, the aerobic bacteria decompose the organic matter in the sewage into inorganic salts; Finally, the MBR membrane 803 is sucked through the suction pipe 804 and the guide box 802, and the MBR membrane 803 filters the landfill leachate to obtain the landfill leachate that meets the discharge standard.

[0039] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A landfill leachate treatment device, comprising a housing (100), characterized in that: The left end of the housing (100) is provided with a regulating tank (200), a reaction tank 1 (300), a reaction tank 2 (400) and a sedimentation tank (500) in order from the back to the front, the middle of the housing (100) is provided with an anaerobic tank (600) and an aerobic tank (700), the anaerobic tank (600) is located on the left side of the aerobic tank (700), and the right end of the housing (100) is provided with a reagent tank (900); The garbage leachate flows sequentially through a regulating tank (200), a first reaction tank (300), a second reaction tank (400), a sedimentation tank (500), an anaerobic tank (600), and an aerobic tank (700), wherein a filtering component (800) is provided in the aerobic tank (700); An aeration component (1000) is provided in the regulating tank (200) and the aerobic tank (700), and a dosing component (1100) is provided in the reagent tank (900).

2. The landfill leachate treatment equipment according to claim 1, characterized in that: The regulating pool (200) and the reaction pool 1 (300) are separated by a partition 1 (301), and the reaction pool 1 (300) and the reaction pool 2 (400) are separated by a partition 2 (401), and the top of the housing (100), the top of the partition 1 (301), and the top of the partition 2 (401) are successively lowered; The left inner wall and the right inner wall of the reaction pool 2 (400) are both fixedly mounted with slide rails (402), the slide rails (402) penetrate the partition 2 (401), and the rear end of the slide rails (402) is fixedly mounted on the surface of the partition 1 (301), and the upper surface of the slide rails (402) is fixedly mounted with guide rods (403), and the guide rods (403) are located in the reaction pool 2 (400); A floating plate (404) is slidably connected to the guide rod (403), a plurality of water leakage holes are formed through the surface of the floating plate (404), a submersible sewage pump (405) is fixedly installed at the bottom of the floating plate (404), a connecting pipe (406) is connected to the top output end of the submersible sewage pump (405), the other end of the connecting pipe (406) is connected to the left side of the sedimentation tank (500), and the connecting pipe (406) is communicated with the sedimentation tank (500).

3. The landfill leachate treatment equipment according to claim 2, characterized in that: The bottoms of the two groups of slide rails (402) are slidably connected with slide seats (407), a slot (408) is penetrated through the second partition plate (401), and the slide seat (407) is slidably connected in the slot (408); A threaded collar (409) is fixedly mounted in the middle of the left side of the slide seat (407), a guide groove (410) is opened on the left side of the housing (100), the guide groove (410) is connected to the reaction pool 1 (300) and the reaction pool 2 (400), and the threaded collar (409) is slidably connected in the threaded collar (409); A sealing cover (411) is fixedly mounted on the left side of the housing (100); a threaded rod (412) is arranged inside the sealing cover (411) along its length direction; the threaded collar (409) is threadedly connected to the threaded rod (412); and a motor 1 (413) is fixedly mounted on one end of the threaded rod (412); A mud discharge pipe (414) is fixedly installed at the lower left side of the housing (100), the mud discharge pipe (414) is connected to the reaction tank (300), and a valve (415) is provided on the mud discharge pipe (414); A second mud discharge pipe (416) is fixedly installed at the lower left side of the housing (100), the second mud discharge pipe (416) is connected to the second reaction tank (400), and a second valve (417) is provided on the second mud discharge pipe (416); Two groups of air inlet pipes (418) are fixedly installed in the middle of the left side of the shell (100), and the two groups of air inlet pipes (418) are respectively connected to the reaction pool 1 (300) and the reaction pool 2 (400), and the top of the air inlet pipe (418) is flush with the top of the partition plate 1 (301).

4. The landfill leachate treatment equipment according to claim 1, characterized in that: A filtering inclined tube (501) is embedded in the middle of the sedimentation tank (500), and a plurality of filtering holes are formed through the top of the filtering inclined tube (501), wherein the filtering holes are inclined and have a regular hexagonal cross section; A groove (502) is provided at the top right side of the sedimentation tank (500), and the sedimentation tank (500) is connected to the anaerobic tank (600) via the groove (502). A filter screen (503) is inserted into the groove (502).

5. The landfill leachate treatment equipment according to claim 1, characterized in that: A flow guide port (601) is provided at the top right side of the anaerobic tank (600), and the anaerobic tank (600) is connected to the aerobic tank (700) through the flow guide port (601); A support plate (602) is fixedly mounted on the inner wall of the anaerobic tank (600), a grid frame (603) is placed on the top of the support plate (602), a plurality of support rods (604) are fixedly penetrated on the grid frame (603), and a plastic strip (605) is fixedly mounted on the support rod (604).

6. The landfill leachate treatment equipment according to claim 1, characterized in that: A mounting frame 1 (701) is placed inside the aerobic pool (700), and a plurality of support rods 2 (702) are fixedly installed inside the mounting frame 1 (701). Plastic plates (703) are arranged in an array along the length direction of the support rods 2 (702), and plastic strips 2 (704) are arranged in an array on the circumferential surface of the plastic plates (703).

7. The landfill leachate treatment equipment according to claim 1, characterized in that: The filtration assembly (800) comprises a second mounting frame (801) placed in the aerobic tank (700); a flow guide box (802) is fixedly mounted on the top of the second mounting frame (801); a plurality of MBR membranes (803) are fixedly mounted on the bottom of the flow guide box (802); the MBR membranes (803) are connected to the flow guide box (802); and a suction pipe (804) is fixedly mounted on the top of the flow guide box (802).

8. The landfill leachate treatment equipment according to claim 1, characterized in that: The aeration assembly (1000) comprises a blower (1001), the output end of the blower (1001) is connected to a four-way pipe (1002), the other three ends of the four-way pipe (1002) are connected to a second connecting pipe (1003), and the other end of the second connecting pipe (1003) is connected to an aeration plate (1004); One aeration disc (1004) on the left is placed in the regulating tank (200), and two aeration discs (1004) on the right are placed in the aerobic tank (700), and the two aeration discs (1004) on the right are fixed in the mounting frame 1 (701).

9. The landfill leachate treatment equipment according to claim 1, characterized in that: The dosing assembly (1100) comprises four groups of pump casings (1101), wherein an impeller (1102) is rotatably connected inside the pump casing (1101), a connecting shaft is fixedly installed at the top center of the impeller (1102), the connecting shaft passes through the top center of the pump casing (1101), the impeller (1102) is connected to a sprocket (1103) via the connecting shaft, the four groups of sprockets (1103) are connected via a chain belt (1104), and a second motor (1105) is connected at the center of the rearmost sprocket (1103); The input end of the pump housing (1101) is connected to a medicine inlet pipe (1106), and the output end of the pump housing (1101) is connected to a medicine outlet pipe (1107); The reagent pool (900) is equally divided into four parts, which are, from back to front, a sodium hydroxide compartment, a deodorant compartment, a PAC compartment, and a PAM compartment. The four groups of reagent inlet pipes (1106) are respectively inserted into the sodium hydroxide compartment, the deodorant compartment, the PAC compartment, and the PAM compartment. The four groups of drug outlet pipes (1107) are inserted into the second reaction pool (400), the first reaction pool (300), the front half of the regulating pool (200), and the back half of the regulating pool (200) in sequence from front to back.

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