A skid-mounted leachate full-volume treatment device

Abstract

This invention discloses a skid-mounted leachate treatment unit, comprising a skid-mounted housing and, mounted on the housing, a pretreatment unit, an anaerobic treatment unit, an aerobic biological treatment unit, a chemical oxidation treatment unit, and a sludge treatment unit. The pretreatment unit filters to obtain filtrate and filter cake; the anaerobic treatment unit obtains anaerobic effluent and anaerobic sludge; the aerobic biological treatment unit obtains aerobic biochemical effluent and aerobic excess sludge; and the chemical oxidation treatment unit obtains purified water and chemical sludge. The sludge treatment unit processes the filter cake, anaerobic sludge, aerobic excess sludge, and chemical sludge to obtain solid sludge and concentrate. This device integrates the pretreatment unit, anaerobic treatment unit, aerobic biological treatment unit, chemical oxidation treatment unit, and sludge treatment unit onto the skid-mounted housing, forming a dedicated system for leachate treatment that allows for flexible layout.

Description

Technical Field

[0001] This invention belongs to the field of waste treatment technology, specifically a skid-mounted leachate full-volume treatment device. Background Technology

[0002] Leachate treatment equipment is an environmental protection facility specifically designed to treat high-concentration leachate (i.e., organic wastewater) generated from landfills, incinerators, and other similar sites. It removes pollutants from the wastewater through physical, chemical, or biological processes to achieve compliant discharge or reuse.

[0003] Most urban solid waste is typically transported to specific areas (such as landfills) for natural decomposition. However, the complex composition of waste, containing large amounts of organic matter, ammonia nitrogen, and other substances, generates significant amounts of leachate, impacting the surrounding aquatic environment. Furthermore, the unique locations of landfills make it difficult to deploy large-scale waste treatment plants; therefore, this problem urgently needs to be addressed. Summary of the Invention

[0004] The purpose of this invention is to provide a skid-mounted leachate full-volume treatment device, which integrates a pretreatment unit, an anaerobic treatment unit, an aerobic biological treatment unit, a chemical oxidation treatment unit, and a sludge treatment unit on a skid-mounted housing to form a device specifically for leachate treatment, which can meet the requirements of flexible layout.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a skid-mounted leachate full-volume treatment device, including a skid-mounted housing and a pretreatment unit, an anaerobic treatment unit, an aerobic biological treatment unit, a chemical oxidation treatment unit and a sludge treatment unit installed on the skid-mounted housing; The pretreatment unit is used to receive leachate and obtain filtrate and filter residue through filtration; the anaerobic treatment unit is used to receive filtrate and obtain anaerobic effluent and anaerobic sludge through anaerobic treatment. The aerobic biological treatment unit is used to receive anaerobic effluent and obtain aerobic biochemical effluent and aerobic excess sludge through aerobic biological treatment; the chemical oxidation treatment unit is used to receive aerobic biochemical effluent and obtain purified water and chemical sludge through chemical oxidation treatment; the sludge treatment unit is used to receive filter residue, anaerobic sludge, aerobic excess sludge, and chemical sludge, and obtain solid sludge and concentrate through pressure filtration treatment.

[0006] As a further embodiment of the present invention, the pretreatment unit includes a housing and a filter plate. The housing has an inlet end on one side and an outlet end on the other side. The housing also has a liquid outlet at the bottom, and the inlet end is higher than the outlet end. The filter plates are arranged at an angle in the housing along the direction from the feed end to the discharge end, and the liquid outlet is located below the filter plates.

[0007] As a further embodiment of the present invention, the pretreatment unit further includes a cleaning mechanism, which includes a support member, a spraying assembly and a driving mechanism, with the support member disposed on the housing; The spray assembly is connected to the support and located below the filter plate, spraying the fluid medium toward the bottom surface of the filter plate; The drive mechanism is connected to the support and is used to drive the support to move within the bottom surface of the filter plate.

[0008] As a further embodiment of the present invention, a filter groove is provided on the filter plate along the direction from the feed end to the discharge end, the support member moves along the extension direction of the filter groove, and the cleaning mechanism also includes a cleaning roller located above the filter plate. The cleaning roller includes a roller body and multiple blades. The roller body is rotatably connected to a support. Each blade is spaced apart on the periphery of the roller body and contacts the upper surface of the filter plate and is close to the spray assembly, so that at least part of the fluid medium is sprayed onto the blades after passing through the filter tank, thereby driving the roller body to rotate.

[0009] As a further embodiment of the present invention, the support member is located above the filter plate and has a receiving groove on the side facing the filter plate, and the cleaning roller is located in the receiving groove.

[0010] As a further embodiment of the present invention, the spray assembly includes a spray pipe and a plurality of nozzles connected to the spray pipe, each nozzle corresponding to a filter tank. The support is also equipped with a connecting plate, which passes through the corresponding filter tank and connects to the spray pipe.

[0011] As a further embodiment of the present invention, two cleaning rollers and two nozzles are arranged at intervals along the extension direction of the filter tank, and each nozzle faces the cleaning roller that is close to it.

[0012] As a further embodiment of the present invention, the driving mechanism includes a first driving member and a transmission assembly, wherein the first driving member is connected to the support member through the transmission assembly.

[0013] As a further embodiment of the present invention, the pretreatment unit also includes a conveying assembly disposed at the discharge end, the conveying assembly being used to send out the filter residue.

[0014] As a further embodiment of the present invention, the conveying assembly includes a U-shaped trough, a spiral shaft, and a second driving component. The U-shaped trough is located at the discharge end, and one end is the discharge port. The screw shaft is rotated inside the U-shaped trough, and the second drive component is located on the side opposite to the discharge port and is connected to the screw shaft for transmission.

[0015] The present invention provides a skid-mounted leachate full-volume treatment device, which has at least the following technical effects: the skid-mounted leachate full-volume treatment device includes a skid-mounted housing and a pretreatment unit, an anaerobic treatment unit, an aerobic biological treatment unit, a chemical oxidation treatment unit, and a sludge treatment unit disposed on the skid-mounted housing. The pretreatment unit is used to receive leachate and obtain filtrate and filter residue through filtration. The anaerobic treatment unit is used to receive filtrate and obtain anaerobic effluent and anaerobic sludge through anaerobic treatment. The aerobic biological treatment unit is used to receive anaerobic effluent and obtain aerobic biochemical effluent and aerobic excess sludge through aerobic biological treatment. The chemical oxidation treatment unit is used to receive aerobic biochemical effluent and obtain purified water and chemical sludge through chemical oxidation treatment. The sludge treatment unit is used to receive filter residue, anaerobic sludge, aerobic excess sludge, and chemical sludge, and obtain solid sludge and concentrate through pressure filtration. The solid sludge can be transported for incineration or landfill, and the concentrate can be returned to the front end for reprocessing.

[0016] Therefore, the skid-mounted leachate full-volume treatment device provided by the present invention integrates the pretreatment unit, anaerobic treatment unit, aerobic biological treatment unit, chemical oxidation treatment unit and sludge treatment unit on the skid-mounted box to form a set of devices specifically for leachate treatment. It can be transported by truck or hoisted to the required location. It has a high degree of integration and can overcome the problem that it is not convenient to build a plant due to the special location of the landfill. Thus, it can be flexibly arranged according to the terrain of the landfill. Attached Figure Description

[0017] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a partial schematic diagram of the skid-mounted leachate full-volume treatment device provided in an embodiment of the present invention; Figure 2 for Figure 1 A top view of the preprocessing unit in the diagram; Figure 3 for Figure 2 A sectional view along section AA in the middle; Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0019] Figure label: 100. Skid-mounted enclosure; 200. Pretreatment unit; 210. Housing; 211. Feeding end; 212. Discharge end; 213. Liquid outlet; 220. Filter plate; 221. Filter tank; 230. Cleaning mechanism; 231. Support component; 232. Spray assembly; 233. Drive mechanism; 234. Cleaning roller; 240. Conveying assembly; 241. U-shaped trough; 242. Spiral shaft; 243. Second drive component; 300. Anaerobic treatment unit; 400. Aerobic biological treatment unit; 500. Chemical oxidation treatment unit; 600. Sludge treatment unit. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0022] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0026] Please see Figures 1 to 4 As shown, this embodiment of the invention provides a skid-mounted leachate full-volume treatment device, including a skid-mounted housing 100 and a pretreatment unit 200, an anaerobic treatment unit 300, an aerobic biological treatment unit 400, a chemical oxidation treatment unit 500, and a sludge treatment unit 600 disposed on the skid-mounted housing 100.

[0027] The pretreatment unit 200 is used to receive leachate and obtain filtrate and filter cake through filtration. The anaerobic treatment unit 300 is used to receive filtrate and obtain anaerobic effluent and anaerobic sludge through anaerobic treatment.

[0028] The aerobic biological treatment unit 400 receives anaerobic effluent and processes it to obtain aerobic biochemical effluent and aerobic excess sludge. The chemical oxidation treatment unit 500 receives aerobic biochemical effluent and processes it to obtain purified water and chemical sludge. The sludge treatment unit 600 receives filter cake, anaerobic sludge, aerobic excess sludge, and chemical sludge, and processes them through filter press to obtain solid sludge and concentrate.

[0029] In this embodiment, the device body 100 can be an assembled structure such as a frame or shell, similar to the structure of a container used for automobile transportation, and has lifting lugs or connection holes for easy hoisting.

[0030] The pretreatment unit 200 in this embodiment is used to remove large particulate impurities, adjust water quality and quantity, and reduce the load on subsequent treatment. For example, it intercepts large suspended solids such as plastic bags, sand, and fibers to prevent blockage of pipes, pumps and subsequent treatment equipment. It mainly plays a filtering role, which can remove large particles in leachate and generate filtrate and filter residue to be treated.

[0031] In this embodiment, the anaerobic treatment unit 300 is used to decompose macromolecular organic matter into methane, carbon dioxide, etc. in an anaerobic environment, efficiently removing a large amount of COD. The biogas produced can be recycled and reused, and then anaerobic effluent and anaerobic sludge to be treated are generated.

[0032] In this embodiment, the aerobic biological treatment unit 400 uses aerobic microorganisms (bacteria, fungi, etc.) to oxidize and decompose residual dissolved organic matter, further reducing COD and BOD, completing ammonia nitrogen nitrification, converting ammonia nitrogen into nitrate nitrogen, and cooperating with the anoxic section to achieve denitrification, ensuring that total nitrogen meets the standards, removing some suspended solids, and significantly improving the biochemical indicators of the effluent, and finally generating aerobic biological effluent to be treated and aerobic excess sludge.

[0033] In this embodiment, the chemical oxidation treatment unit 500 targets biodegradable organic compounds such as humic acid and fulvic acid, and destroys their structure through Fenton oxidation, ozone oxidation, and other methods to further remove residual COD and color, reduce the concentration of recalcitrant pollutants, and then generate purified water and chemical sludge. The effluent meets the discharge standards or reuse requirements.

[0034] The sludge treatment unit 600 in this embodiment is used to collect filter residue, anaerobic sludge, aerobic excess sludge, and chemical sludge. It reduces the volume of sludge and lowers the water content through concentration and dewatering (plate and frame filter press, centrifugation, etc.). The filter press process yields solid sludge and concentrated liquid. The solid sludge can be transported for incineration or landfill, and the concentrated liquid can be returned to the front end for reprocessing, thus achieving full-volume treatment.

[0035] Specifically, the skid-mounted leachate full-volume treatment device can be moved to any landfill by vehicle, transporting the landfill leachate to the pretreatment unit 200, where it is then treated in sequence by the anaerobic treatment unit 300, the aerobic biological treatment unit 400, the chemical oxidation treatment unit 500, and the sludge treatment unit 600 to achieve full-volume treatment.

[0036] Therefore, the application of the skid-mounted leachate full-volume treatment device provided in this embodiment of the invention integrates the pretreatment unit 200, anaerobic treatment unit 300, aerobic biological treatment unit 400, chemical oxidation treatment unit 500 and sludge treatment unit 600 on the skid-mounted housing 100 to form a set of devices specifically for leachate treatment. It can be transported by truck or hoisted to the required location. It has a high degree of integration and can overcome the problem that it is not convenient to build a plant due to the special location of the landfill. Thus, it can be flexibly arranged according to the terrain of the landfill.

[0037] In some embodiments, the pretreatment unit 200 includes a housing 210 and a filter plate 220. The housing 210 has an inlet end 211 on one side and an outlet end 212 on the other side. The housing 210 also has a liquid outlet 213 below it, and the inlet end 211 is higher than the outlet end 212.

[0038] The filter plate 220 is arranged inclinedly in the housing 210 along the direction from the feed end 211 to the discharge end 212, and the liquid outlet 213 is located below the filter plate 220.

[0039] Specifically, such as Figure 2 , Figure 3 As shown, the housing 210 is used to accommodate the filter plate 220. The feed end 211 on the housing 210 is higher than the discharge end 212. The filter plate 220 is arranged inclinedly in the housing 210 along the direction from the feed end 211 to the discharge end 212. The angle between the filter plate 220 and the horizontal plane is 30°~60°. The feed end 211 is used to receive the leachate, the discharge end 212 is used to discharge the filter residue, and the liquid outlet 213 below the housing 210 is used to discharge the filtrate to the anaerobic treatment unit 300.

[0040] As the leachate moves from the feed end 211 to the discharge end 212, coarse suspended solids such as adhering materials, plastic bags, sand, and fibers move to the discharge end 212, making it easier for the sludge treatment unit 600 to process them. Meanwhile, the filtrate passing through the filter plate 220 is discharged to the anaerobic treatment unit 300 through the outlet 213, thereby removing large particulate impurities, adjusting water quality and quantity, and reducing the load on subsequent treatments.

[0041] Furthermore, in this embodiment, the pretreatment unit 200 also includes a cleaning mechanism 230, which includes a support member 231, a spraying assembly 232 and a driving mechanism 233. The support member 231 is disposed on the housing 210.

[0042] The spray assembly 232 is connected to the support 231 and is located below the filter plate 220, and sprays the fluid medium toward the bottom surface of the filter plate 220.

[0043] The drive mechanism 233 is connected to the support member 231 and is used to drive the support member 231 to move within the bottom surface of the filter plate 220.

[0044] Specifically, such as Figure 2 , Figure 3 , Figure 4 As shown, the support member 231 can be a plate or shell structure, and its two sides can be connected to the shell 210 via guide rails, guide rods, etc., and reciprocate along a direction parallel to the filter plate 220 and along the feed end 211 to the discharge end 212. The spray assembly 232 is located below the filter plate 220 and connected to the support member 231. The spray assembly 232 is connected to the high-pressure source pipeline through a pipeline. The spray assembly 232 is used to spray a fluid medium toward the bottom surface of the filter plate 220, wherein the fluid medium can be high-pressure steam, cleaning agent, etc. The drive mechanism 233 can be set on both sides of the shell 210 and connected to the shell 210 respectively to drive the support member 231 to move within the bottom surface of the filter plate 220.

[0045] In this way, the high-pressure fluid medium sprayed by the spray assembly 232 onto the bottom surface of the filter plate 220 washes away the sticky substances adhering to the upper surface of the filter plate 220, avoiding clogging of holes or grooves and affecting the filtration effect. Under the action of the drive mechanism 233 driving the support member 231 to move within the bottom surface of the filter plate 220, all-round cleaning is achieved.

[0046] It is worth noting that by using the spray assembly 232 to backwash the filter plate 220 in the filtration direction, coarse suspended matter can be significantly prevented from passing downwards, ensuring the filtration effect. In addition, under the action of high-pressure steam or cleaning agents, the sticky substances adhering to the surface of the filter plate 220 can be effectively softened and removed.

[0047] Furthermore, in this embodiment, a filter groove 221 is provided on the filter plate 220 along the direction from the feed end 211 to the discharge end 212, the support member 231 moves along the extension direction of the filter groove 221, and the cleaning mechanism 230 also includes a cleaning roller 234 located above the filter plate 220.

[0048] The cleaning roller 234 includes a roller body and multiple blades. The roller body is rotatably connected to the support member 231. Each blade is arranged at intervals on the periphery of the roller body and contacts the upper surface of the filter plate 220 and is close to the spray assembly 232, so that at least part of the fluid medium is sprayed onto the blades after passing through the filter tank 221, thereby driving the roller body to rotate.

[0049] Specifically, such as Figure 2 As shown, the filter tank 221 is a long and narrow tank, arranged along the length from the feed end 211 to the discharge end 212, with a width of 2mm to 5mm. Multiple filter tanks 221 are arranged at intervals along the transverse direction, allowing the filtrate to pass downwards through the filter tank 221. Figure 3 , Figure 4 As shown, the axis of the roller body on the cleaning roller 234 is arranged along the width direction of the filter groove 221, and both ends can be mounted on the support member 231 through bearings. Each blade is evenly distributed and connected to the periphery of the roller body, that is, one end of the blade is connected to the roller body, and the other end extends outward along the radial direction of the roller body.

[0050] Each blade contacts the upper surface of the filter plate 220 and is close to the spray assembly 232. When the fluid medium sprayed from the spray assembly 232 passes through the filter tank 221 and is sprayed onto the corresponding blade, it can drive the roller to rotate. Thus, the blade scrapes off the sticky layer attached to the upper surface of the filter plate 220 to ensure the filtration effect.

[0051] It is worth noting that the impact force of the fluid medium sprayed by the spray assembly 232 can drive the cleaning roller 234 to rotate, without the need for additional power, resulting in a simpler and more compact structure. It should also be noted that, to prevent the blades from getting stuck to the adhesive layer on the upper surface of the filter plate 220, the blades can be made of a material capable of producing a preset elastic deformation.

[0052] Furthermore, in this embodiment, the support member 231 is located above the filter plate 220 and has a receiving groove on the side facing the filter plate 220, and the cleaning roller 234 is located in the receiving groove.

[0053] Specifically, such as Figure 3 , Figure 4 As shown, the support member 231 has a cover structure, and its two sides can be connected to the housing 210 through guide rods, guide rails, etc. The support member 231 is located above the filter plate 220, and its side facing the filter plate 220 has a concave receiving groove for accommodating the cleaning roller 234. The distance between the edge of the receiving groove and the filter plate 220 is 10mm~20mm.

[0054] In this way, on the one hand, when the ejected fluid medium enters the receiving tank, it can be buffered to prevent it from scattering everywhere; on the other hand, when the fluid medium is high-temperature steam, it can continuously soften the sticky substances adhering to the cleaning roller 234, making it easier to remove, and basically achieving cleaning-free operation.

[0055] Furthermore, in this embodiment, the spray assembly 232 includes a spray pipe and a plurality of nozzles connected to the spray pipe, each nozzle corresponding to a filter tank 221.

[0056] The support member 231 is also provided with a connecting plate, which passes through the corresponding filter tank 221 and is connected to the spray pipe.

[0057] Specifically, such as Figure 3 , Figure 4 As shown, the spray pipe extends along the width of the filter tank 221, and multiple spray heads are arranged at intervals along the length of the spray pipe, with each spray head corresponding to a filter tank 221. A connecting plate is housed within the receiving groove of the support member 231, and its thickness is less than the width of the filter tank 221. Each connecting plate corresponds one-to-one with a filter tank 221, and after passing through its corresponding filter tank 221, it is fixed to the spray pipe so that the support member 231 can drive the spray assembly 232 to move synchronously.

[0058] Furthermore, in this embodiment, two cleaning rollers 234 and two nozzles are arranged at intervals along the extension direction of the filter tank 221, and each nozzle faces the cleaning roller 234 that is close to it.

[0059] That is, such as Figure 3 , Figure 4 As shown, there is a preset included angle between the two nozzles, which is 60°~120°. The fluid medium sprayed by the two nozzles passes through the same filter tank 221 and is then directed onto the adjacent cleaning rollers 234. The rotation directions of the cleaning rollers 234 are opposite, which ensures better cleaning effect.

[0060] Furthermore, in this embodiment, the drive mechanism 233 includes a first drive member and a transmission assembly, and the first drive member is connected to the support member 231 through the transmission assembly.

[0061] For example, such as Figure 2 As shown, the first driving component is a motor, hydraulic motor, etc., which is installed on the side wall of the housing 210. The transmission component can be a chain assembly, belt drive assembly, etc. The transmission component is arranged parallel to the filter plate 220 and along the direction from the feed end 211 to the discharge end 212. The support member 231 is connected to the corresponding transmission component on both sides.

[0062] In this way, the driving end of the first driving component can drive the support 231 to reciprocate in a direction parallel to the filter plate 220 via the transmission assembly. It should be noted that when driving mechanisms 233 are provided on both sides of the housing 210, the two must be connected by a synchronization mechanism (not shown in the figure) to avoid interference and jamming.

[0063] Of course, the drive mechanism 233 can also be replaced by other types of mechanisms, such as telescopic rods. This can be determined according to actual needs, and no restrictions are imposed in this embodiment.

[0064] In some embodiments, the pretreatment unit 200 further includes a conveying assembly 240 disposed at the discharge end 212, the conveying assembly 240 being used to deliver the filter residue.

[0065] Specifically, such as Figure 2 As shown, the conveying component 240 can be a screw conveyor, belt conveyor, etc., and it is located at the discharge end 212. That is, the filter residue falling from the discharge end 212 can fall onto the conveying component 240, which facilitates the collection of the filter residue.

[0066] Furthermore, in this embodiment, the conveying assembly 240 includes a U-shaped trough 241, a spiral shaft 242, and a second driving component 243. The U-shaped trough 241 is located at the discharge end 212, and one end is the discharge port.

[0067] The spiral shaft 242 is rotatably disposed inside the U-shaped trough 241, and the second driving component 243 is located on the side opposite to the discharge port and is connected to the spiral shaft 242 for transmission.

[0068] Specifically, such as Figure 2 , Figure 3 As shown, the opening of the U-shaped trough 241 faces upward, and one side of it is located at the discharge end 212, that is, the filter residue at the discharge end 212 can fall into the U-shaped trough 241. The U-shaped trough 241 is arranged in a transverse direction perpendicular to the material falling. One end of it has a discharge port for discharging the filter residue, and the other end is provided with a second driving component 243, which is a motor, hydraulic motor, etc.

[0069] The spiral shaft 242 is arranged inside the U-shaped trough 241, with one end connected to the second driving member 243. Under the driving action of the second driving member 243, the filter residue falling into the U-shaped trough 241 can be transported to the discharge port. Additionally, an elastic baffle mechanism can be installed at the discharge port to facilitate the agglomeration of the filter residue into clumps, which is beneficial for subsequent processing.

[0070] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A skid-mounted total leachate treatment device, characterized by, The utility model relates to a leaching box (100) and the pretreatment unit (200), anaerobic treatment unit (300), aerobic biological treatment unit (400), chemical oxidation treatment unit (500) and sludge treatment unit (600) are arranged on the leaching box (100) including; The pretreatment unit (200) is used for receiving leachate, and the filtrate and the filter residue are obtained by filtering treatment;The anaerobic treatment unit (300) is used for receiving the filtrate, and the anaerobic effluent and anaerobic sludge are obtained by anaerobic treatment; The aerobic biological treatment unit (400) is used for receiving the anaerobic effluent, and the aerobic biochemical effluent and aerobic residual sludge are obtained by aerobic biological treatment;The chemical oxidation treatment unit (500) is used for receiving the aerobic biochemical effluent, and the purified water and chemical sludge are obtained by chemical oxidation treatment;The sludge treatment unit (600) is used for receiving the filter residue, the anaerobic sludge, the aerobic residual sludge and the chemical sludge, and the solid sludge and the concentrated liquid are obtained by pressure filtration treatment.

2. The skid-mounted total leachate treatment device according to claim 1, characterized by, The pretreatment unit (200) includes a shell (210) and a filter plate (220), one side of the shell (210) has a feeding end (211), the other side has a discharging end (212), and the shell (210) further has a liquid outlet (213) below, and the feeding end (211) is higher than the discharging end (212); The filter plate (220) is arranged in the shell (210) in the direction from the feeding end (211) to the discharging end (212), and the liquid outlet (213) is located below the filter plate (220).

3. The skid-mounted total leachate treatment device according to claim 2, characterized by, The pretreatment unit (200) further includes a cleaning mechanism (230), the cleaning mechanism (230) includes a support (231), a spraying assembly (232) and a driving mechanism (233), the support (231) is arranged on the shell (210); The spraying assembly (232) is connected to the support (231) and located below the filter plate (220), and sprays fluid medium towards the bottom surface of the filter plate (220); The driving mechanism (233) is connected to the support (231) and used for driving the support (231) to move in the bottom surface of the filter plate (220).

4. The skid-mounted total leachate treatment device according to claim 3, characterized by, The filter plate (220) is provided with a filter groove (221) in the direction from the feeding end (211) to the discharging end (212), the support (231) moves along the extension direction of the filter groove (221), and the cleaning mechanism (230) further includes a cleaning roller (234) located above the filter plate (220); The cleaning roller (234) includes a roller body and a plurality of blades, the roller body is rotationally connected to the support (231), each blade is arranged on the circumferential side of the roller body and in contact with the upper surface of the filter plate (220), and is close to the spraying assembly (232), so that at least part of the fluid medium is sprayed to the blades after passing through the filter groove (221), to drive the roller body to rotate.

5. The skid-mounted total leachate treatment device according to claim 4, characterized by, The support (231) is located above the filter plate (220), and has a containing groove on one side facing the filter plate (220), and the cleaning roller (234) is located in the containing groove.

6. The skid-mounted total leachate treatment device according to claim 4, characterized by The spraying assembly (232) comprises a spraying pipe and a plurality of spray heads connected to the spraying pipe, and each spray head corresponds to each filter groove (221); The support (231) is further provided with a connecting plate, which is connected with the spraying pipe after passing through the corresponding filter groove (221).

7. The skid-mounted total leachate treatment device according to claim 6, characterized by, The cleaning roller (234) and the spray head are respectively arranged two in the extension direction of the filter groove (221), and each spray head faces the adjacent cleaning roller (234).

8. The skid-mounted total leachate treatment device according to claim 3, characterized by, The driving mechanism (233) comprises a first driving member and a transmission assembly, and the first driving member is drivingly connected with the support (231) through the transmission assembly.

9. The skid-mounted total leachate treatment device according to any one of claims 1 to 8, characterized by, The pretreatment unit (200) further comprises a conveying assembly (240) arranged at the discharge end (212), and the conveying assembly (240) is used for conveying the filter residue out.

10. The skid-mounted total leachate treatment device according to claim 9, characterized by, The conveying assembly (240) comprises a U-shaped chute (241), a spiral shaft (242) and a second driving member (243), the U-shaped chute (241) is located at the discharge end (212), and one end is a discharge port; The spiral shaft (242) is rotatably arranged in the U-shaped chute (241), and the second driving member (243) is located on the side away from the discharge port and is drivingly connected with the spiral shaft (242).

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