A fully quantitative treatment equipment for landfill leachate

Abstract

The invention belongs to the technical field of wastewater treatment, in particular to a fully quantitative treatment device for landfill leachate, comprising a pretreatment module, a biochemical treatment module and a product treatment module, and also comprising a liquid inlet pipe installed on the top of a tower body, and a liquid outlet pipe installed at the bottom; an electrolysis layer is arranged at the middle position inside the tower body, comprising a packing disk arranged on the upper and lower sides and an electrolysis zone formed in the middle position, and the electrolysis zone is filled with spherical catalytic self-electrolysis packing; the electrolysis zone also comprises a combing module for cleaning the spherical catalytic self-electrolysis packing; the invention can screen the spherical packings with different degrees of adhered impurities in the accumulated spherical packings by arranging the combing module, and carry out cleaning operations in a centralized manner, so that the impurities adhered to the spherical packings are cleaned more fully, thereby improving the backwash cleaning efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment, in particular to a fully quantitative treatment device for landfill leachate. Background Art

[0002] The raw leachate from landfills is a high-concentration organic wastewater with complex components, in which organic pollutants are divided into biodegradable pollutants and difficult-to-biodegrade pollutants. FCM catalytic self-electrolysis combined with SAO3 advanced coupled oxidation can break down the toxic functional groups of toxic and harmful difficult-to-biodegrade organic pollutants, open the ring and break the chain of cyclic and long-chain macromolecular organic matter, convert difficult-to-biodegrade pollutants into biodegradable pollutants, and improve the biodegradability of wastewater; thus, conventional methods can be used to treat the treated leachate to minimize operating costs.

[0003] During use, the treatment personnel found that in the process of catalytic self-electrolysis, the iron-carbon filler was prone to problems such as compaction, blockage, and scaling, which caused the iron-carbon filler to be scrapped and replaced frequently, increasing the processing cost and affecting the efficiency of the permeate treatment. Therefore, a spherical filler with large gaps has been developed on the existing market, which can effectively avoid the problems of compaction and blockage that are prone to occur in normal sewage treatment.

[0004] However, compared with ordinary domestic sewage, the leachate in the landfill has accumulated a large amount of rotten food and other grease-filled waste in the landfill that has lasted for a long time, and the concentration of various impurities and wastes in the leachate is relatively high; therefore, in the process of catalytic self-electrolysis, the grease-like impurities with strong adhesion are easy to adhere to the surface of the spherical filler and form clumps, affecting the full contact with the leachate, resulting in insufficient recovery; and the iron ions generated in the recovery process are easily hindered by the adhered impurities, staying on the surface of the filler for a long time, forming iron hydroxide that dehydrates into iron oxide, forming an oxide film on the surface of the filler, resulting in the spherical filler being unable to carry out the catalytic self-electrolysis reaction normally, thereby affecting the work efficiency. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the present invention proposes a fully quantitative treatment device for landfill leachate.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: the present invention proposes a landfill leachate full-quantity treatment device, comprising a pretreatment module, a biochemical treatment module and a product treatment module, wherein the pretreatment module comprises a catalytic self-electrolysis device and an ozone catalytic oxidation system for comprehensive pretreatment of the leachate; the biochemical treatment module is used to purify the pretreated permeate, and the product treatment module dries, solidifies and recycles the impurity products in the permeate purification process;

[0007] The catalytic self-electrolysis equipment comprises an electrolytic catalytic tower, the electrolytic catalytic tower comprises a tower body and a bottom bracket, and a control interface is provided on the outer surface of the tower body to control the operation of various components;

[0008] It also includes a liquid inlet pipe installed on the top of the tower body and a liquid outlet pipe installed at the bottom; an electrolysis layer is arranged in the middle position inside the tower body, and the electrolysis layer includes a packing disk arranged on the upper and lower sides and an electrolysis zone formed in the middle part, and the electrolysis zone is filled with spherical catalytic self-electrolysis packing; an aeration system and a backwashing system are also arranged inside the tower body;

[0009] The electrolysis zone also includes a combing module for cleaning the spherical catalytic self-electrolysis filler; the combing module includes a combing plate, which is located inside the electrolysis zone and connected to the telescopic device installed on the top of the tower body through a connecting rod;

[0010] The combing plate is evenly provided with combing holes, and the diameter of the combing holes is larger than the average diameter of the catalytic self-electrolysis filler.

[0011] Preferably, a cleaning groove is provided on the inner wall of the combing hole, and the cleaning groove extends in a direction away from the center of the combing hole; the raised parts of the gaps between the cleaning grooves form a cleaning plate, and the end parts of the cleaning plate are set to elastic material.

[0012] Preferably, the connecting rod is elastically connected to the telescopic end of the telescopic device, and a vibration device is provided on the end of the connecting rod.

[0013] Preferably, a combing tube is provided on the combing plate in the gap between the combing holes, the combing tube is vertically arranged, and the top and bottom openings of the combing tube are both arranged in a trumpet shape;

[0014] The inner diameter of the middle part of the combing tube is larger than the diameter of the catalytic self-electrolysis filler, and flow-guiding protrusions are evenly arranged on the inner wall surface of the combing tube; the upper and lower surfaces of the flow-guiding protrusions are both inclined.

[0015] Preferably, the ends of the guide protrusions are rounded, and the guide protrusions at the same vertical height are arranged asymmetrically.

[0016] Preferably, guide vanes are provided at the top and bottom openings of the combing tube, and the guide vanes are distributed in a circle around the central axis of the combing tube, and the guide vanes are all inclined.

[0017] Preferably, the combing tube comprises a fixed portion in the middle and rotating portions at both ends, the guide plate is located on the rotating portion, the rotating portion is rotatably connected to the fixed portion, and a bearing is provided at the rotating connection portion.

[0018] Preferably, the connecting rod is hollow inside to form a transmission channel, and the top of the transmission channel is connected to an external cleaning water source through a connecting pipe;

[0019] The interior of the combing plate is hollow and communicated with the transmission channel. The side wall of the combing tube is provided with an annular cleaning cavity, which communicates with the hollow portion inside the combing plate. A cleaning hole is provided on the inner wall of the combing tube at the gap between the guide bumps, which communicates with the interior of the cleaning cavity and is a conical hole.

[0020] Preferably, flushing holes are evenly arranged on the outer wall of the combing tube, and the flushing holes are inclined to point toward the surface of the combing plate.

[0021] Preferably, a guide groove is provided on the inner wall of the combing tube, and the end of the guide groove points to the gap portion of the guide plate.

[0022] The beneficial effects of the present invention are as follows.

[0023] 1. The landfill leachate full-scale treatment equipment described in the present invention controls the combing plate to move slowly downward in the electrolysis zone, squeezes the spherical filler on the lower side, and cooperates with the upward action of the cleaning liquid to enable a single spherical filler to pass through the combing hole smoothly. During the passing process, impurities adhered to the outer surface of the spherical filler are scraped off by the inner wall of the combing hole, so that the impurities adhered to the outer surface of the spherical filler can be cleaned more fully.

[0024] 2. The fully quantitative landfill leachate treatment equipment described in the present invention, by providing a combing module, can specifically screen the spherical fillers with different degrees of adhered impurities in the accumulated spherical fillers, and conduct cleaning operations in a centralized manner, so that the impurities adhered to the spherical fillers can be cleaned more fully, thereby improving the backwash cleaning efficiency; and the up and down movement of the combing plate allows the spherical fillers located at different vertical heights of the electrolysis layer to flow up and down, and fully exchange and mix, thereby reducing the problem of large differences in electrolysis effects due to different degrees of adhered impurities in the spherical fillers at different parts, and allowing the spherical fillers to be more fully utilized, thereby improving the efficiency of the purification treatment of the permeate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 It is a perspective view of the present invention.

[0027] Figure 2 It is a partial cross-sectional view of the present invention in the front view direction.

[0028] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.

[0029] Figure 4 yes Figure 2 A partial enlarged view of point B in the middle.

[0030] Figure 5 It is a stereogram of the combing module in the present invention.

[0031] Figure 6 yes Figure 5 A partial enlargement of point C in the middle.

[0032] Figure 7 It is a three-dimensional diagram of the combing tube in the present invention.

[0033] Figure 8 It is a three-dimensional diagram of the packing tray of the present invention.

[0034] In the figure: electrolytic catalytic tower 1, tower body 11, liquid inlet pipe 111, liquid outlet pipe 112, telescopic device 113, bottom bracket 12, control interface 13, electrolytic layer 14, filler plate 141, electrolytic area 142, aeration system 15, backwash system 16, combing module 2, combing plate 21, combing hole 22, cleaning groove 221, cleaning plate 222, combing pipe 23, fixed part 231, rotating part 232, cleaning cavity 233, cleaning hole 234, flushing hole 235, guide groove 236, guide protrusion 24, guide plate 25, connecting rod 26, vibration device 261, transmission channel 262, connecting pipe 263. DETAILED DESCRIPTION

[0035] 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.

[0036] like Figure 1-8 shown.

[0037] Embodiment 1: A landfill leachate full-scale treatment device, in the full-scale treatment of garbage leachate, adopts FCM catalytic self-electrolysis treatment method combined with coupled oxidation treatment to fully pre-treat the leachate, which can effectively improve the biochemical properties of the leachate, so that the treated leachate can be treated by conventional methods, and the operating cost can be reduced to the greatest extent;

[0038] During use, the treatment personnel found that during the catalytic self-electrolysis process, the iron-carbon filler was prone to problems such as hardening, clogging, and scaling, which caused the iron-carbon filler to be scrapped and replaced frequently, increasing the processing cost and affecting the efficiency of the permeate treatment. Therefore, a spherical filler with large gaps was developed on the existing market, which can effectively avoid the problems of hardening, clogging, etc. that are prone to occur in normal sewage treatment.

[0039] However, compared with ordinary domestic sewage, the leachate in the landfill has accumulated a large amount of rotten food and other grease-filled waste in the landfill for a long time, and the concentration of various impurities and wastes in the leachate is relatively high; therefore, in the process of catalytic self-electrolysis, the grease-like impurities with strong adhesion are easy to adhere to the surface of the spherical filler and form a clumping, which affects the full contact with the leachate, resulting in insufficient recovery; and the iron ions generated in the recovery process are easily hindered by the adhered impurities, and stay on the surface of the filler for a long time, forming iron hydroxide that dehydrates into iron oxide, forming an oxide film on the surface of the filler, which makes the spherical filler unable to perform the catalytic self-electrolysis reaction normally, thereby affecting the work efficiency;

[0040] In order to effectively solve the above problems, the present application proposes a landfill leachate full-quantity treatment device, as shown in the accompanying drawings of the specification. Figure 1-8 As shown, specifically, it includes a pretreatment module, a biochemical treatment module and a product treatment module. The pretreatment module includes a catalytic self-electrolysis device and an ozone catalytic oxidation system, wherein the ozone catalytic oxidation system includes an ozone generator and a catalytic generator, as well as various catalyst fillers filled inside. Ozone is used to perform catalyst activation treatment on the incoming permeate, so that a large number of highly active hydroxyl free radicals are generated inside the permeate, and the residual pollutants in the biochemical effluent are directly mineralized and removed, and the colored molecular groups and color-developing organic matter are destroyed, so as to ensure that the various indicators of the effluent meet the standards and the sensory perception meets the environmental protection requirements;

[0041] The above-mentioned catalytic self-electrolysis equipment and ozone catalytic oxidation system cooperate with each other to achieve comprehensive pretreatment of the leachate and restore the biochemical properties of the permeate; the permeate with restored biochemical properties can be treated by traditional sewage treatment. For example, the biochemical treatment module here can use the existing enhanced biochemical method and double membrane combination process, as well as related supporting equipment, to purify the permeate after comprehensive pretreatment to meet the discharge standards; the product treatment module uses the treatment equipment for filtering impurities in the existing sewage purification to treat the impurity concentrate generated in the above treatment process, filter, evaporate and press, dry and solidify to obtain mud cake, and finally recycle and treat;

[0042] The catalytic self-electrolysis device includes an electrolytic catalytic tower 1, which includes a tower body 11 and a bottom bracket 12. A control interface 13 is provided on the outer surface of the tower body 11. The control interface 13 includes a display screen and control buttons. The staff can control and adjust the operation process of each component of the electrolytic catalytic tower 1 through various controllers corresponding to the control buttons.

[0043] The tower body 11 also includes a liquid inlet pipe 111 installed at the top of the tower body 11, where the liquid inlet pipe 111 is connected to the sewage pump to deliver the permeate after preliminary filtration and static into the electrolytic catalytic tower 1, and a liquid outlet pipe 112 installed at the bottom of the tower body 11, after the reaction is completed, delivers the treated permeate into the ozone catalytic oxidation reactor in the next process for subsequent treatment; an electrolytic layer 14 is arranged in the middle of the tower body 11, and the electrolytic layer 14 includes a packing disk 141 arranged at the upper and lower sides and an electrolytic zone 142 formed in the middle, and the electrolytic zone 142 is filled with spherical catalytic self-electrolytic fillers in the middle, and the catalytic self-electrolytic fillers use existing FCM-IV catalytic self-electrolytic fillers;

[0044] The tower body 11 is also provided with an aeration system 15 and a backwash system 16, as well as an acid adding system provided on one side. When the electrolytic catalytic reaction in the electrolytic zone 142 cannot fully react due to weak acidity, an appropriate amount of acid is added to the electrolytic zone 142 to ensure that the reaction proceeds normally.

[0045] The electrolysis zone 142 also includes a combing module 2 for cleaning the spherical catalytic self-electrolysis filler; the combing module 2 includes a combing plate 21, which is located inside the electrolysis zone 142 and connected to a telescopic device 113 installed on the top of the tower body 11 through a connecting rod 26. The telescopic device 113 here can be a device such as an electric telescopic rod; combing holes 22 are evenly arranged on the combing plate 21, and the combing holes 22 are circular holes, and the aperture of the combing holes 22 is larger than the average diameter of the catalytic self-electrolysis filler;

[0046] Specific work flow: after the permeate flows out of the landfill, it is sent to the sedimentation tank for static treatment, and flocculants are poured in for neutralization and flocculation sedimentation treatment; when the permeate in the sedimentation tank accumulates to a certain level, it is pumped out by the sewage pump and sent to the connected liquid inlet pipe 111, and then dispersed from the liquid distributor installed at the bottom of the liquid inlet pipe 111 to the packing plate 141 on the lower side; and because the packing plate 141 is evenly provided with packing holes, the packing holes are through holes and the hole diameter is smaller than the average diameter of the spherical packing, while allowing the permeate to pass smoothly, the spherical packing is limited;

[0047] Therefore, the permeate can smoothly pass through the filler hole into the electrolysis zone 142 and fully contact with the spherical filler inside the electrolysis zone 142; the surface of the permeate accumulated inside the tower body 11 is controlled to just exceed the electrolysis layer 14, and then the input is stopped; because the permeate is acidic, it meets the reaction requirements; then the aeration system 15 is started, and the air flow is evenly released through the aeration head extending into the tower body 11, so as to stir the spherical filler and the permeate inside the electrolysis zone 142; during this aeration and stirring process, the iron carbon on the spherical filler forms a large number of smiling primary cells, and a redox reaction occurs, which removes the heavy metal ions in the permeate and eliminates the toxic effect on microorganisms, while removing part of the COD, reducing the compliance of the biochemical system, and restoring the biochemical properties of the permeate; after the treatment is completed and the internal permeate reaches the standard, the permeate is sent to the subsequent ozone catalytic oxidation system through the liquid outlet pipe 112 for subsequent treatment;

[0048] After working for a period of time, a large amount of impurities are attached and accumulated on the surface and gaps of the spherical fillers inside the electrolysis zone 142. The viscous components of the impurities cause the adjacent spherical fillers to adhere to each other and form a mass, thereby affecting the full contact between the spherical fillers and the permeate. At this time, it is necessary to close the liquid inlet pipe 111 and the liquid outlet pipe 112 and start the backwashing process. The backwashing water inlet pipe on the backwashing system 16 feeds the cleaning liquid from the lower side of the electrolytic layer 14, accumulates inside the tower body 11, and is drawn out from the backwashing water outlet pipe set on the upper side of the electrolytic layer 14, thus starting the upward backwashing operation in the opposite direction of the permeate flow. The upward-flowing cleaning liquid flushes the gaps and surfaces of the spherical fillers from bottom to top, and at the same time the aeration system 15 is started, and the aeration airflow stirs the spherical fillers to further clean the impurities adhering to the spherical fillers, thereby ensuring the normal operation of the spherical fillers.

[0049] Further, the telescopic device 113 of the combing module 2 is started, and the telescopic end of the telescopic device 113 drives the connecting rod 26 to move downward, thereby driving the combing plate 21 to move downward; in the initial state, the combing plate 21 is located near the top of the electrolysis zone 142, and the spherical filler is basically located on the lower side of the combing plate 21, and the combing plate 21 does not affect the smooth flow of the permeate through the combing hole 22; when the combing plate 21 moves downward slowly, the spherical filler on the lower side is squeezed, and the cleaning liquid acts upward; in the process of the cleaning liquid passing through the combing hole 22, the spherical filler therein is driven to smoothly pass through the combing hole 22 on the combing plate 21 upward; and the aperture of the combing hole 22 is larger than the average diameter of the spherical filler, but less than twice the average diameter of the spherical filler; therefore, a single spherical filler can smoothly pass through the combing hole 22, and in the process of passing through, the impurities adhered to the outer surface of the spherical filler are scraped off by the inner wall of the combing hole 22, so that the impurities adhered to the outer surface of the spherical filler are cleaned more fully;

[0050] Furthermore, because the spherical fillers adhered to each other cannot pass through the combing holes 22, during the downward movement of the combing plate 21, the normal and independent spherical fillers in the accumulated spherical fillers pass smoothly, while the spherical fillers adhered to each other are screened out and pressed against the lower surface of the combing plate 21; at this time, because they are no longer hindered by the independent and normal spherical fillers, the spherical fillers adhered to each other are concentratedly flushed by the upward flowing cleaning liquid, so that the impurities adhered to the gaps between the spherical coatings fall off under the concentrated flushing work, while the spherical fillers adhered to each other are scattered from each other and can smoothly pass through the combing holes 22 upward; until the combing plate 21 moves downward to a position close to the lower filling plate 141 and stops moving downward; at this time, the telescopic device 113 is controlled to move the combing plate 21 upward, and the impurities between the spherical fillers on the upper side are screened and cleaned again, and this is repeated many times;

[0051] Through the above process, the spherical fillers with different degrees of adhered impurities in the accumulated spherical fillers can be screened in a targeted manner, and the cleaning operation can be concentrated, so that the impurities adhered to the spherical fillers can be cleaned more fully, thereby improving the backwash cleaning efficiency; and the up and down movement of the combing plate 21 causes the spherical fillers located at different vertical heights of the electrolytic layer 14 to flow up and down, and fully exchange and mix, thereby reducing the problem of large differences in electrolysis effects due to different degrees of adhered impurities in the spherical fillers at different parts, and making more full use of the spherical fillers, thereby improving the efficiency of the purification treatment of the permeate.

[0052] Embodiment 2: Based on Embodiment 1, as shown in the accompanying drawings of the specification Figure 1-6 As shown, a cleaning groove 221 is provided on the inner wall of the combing hole 22, and the cleaning groove 221 is distributed in an annular manner around the center of the combing hole 22, and the cleaning groove 221 extends in a direction away from the center of the combing hole 22; and because the gap between the cleaning grooves 221 is raised to form a cleaning plate 222, the end portion of the cleaning plate 222 is set to an elastic material;

[0053] Specific workflow: Based on the specific workflow in the first embodiment, the telescopic device 113 is started to push the combing plate 21 to move vertically. When the spherical filler passes through the combing hole 22 on the combing plate 21, the impurities attached to the outer surface of the spherical filler will be scraped off and may be attached to the inner wall of the combing hole 22 and the edge of the upper and lower surfaces of the combing plate 21 near the combing hole 22. Because the impurities and contaminants have viscous components, it is difficult to fall off smoothly;

[0054] Therefore, a cleaning groove 221 is provided. When the spherical filler passes through the combing hole 22, the end of the cleaning plate 222 located between the cleaning grooves 221 can contact the outer surface of the spherical filler passing through and scrape off the impurities on the surface, so that the impurities on the outer surface of the spherical filler can be cleaned more fully; and the end of the cleaning plate 222 is made of elastic material, which can effectively reduce the damage that may be caused to the main body of the spherical filler in the process of scraping off the impurities on the surface of the spherical filler, thereby ensuring that the spherical filler can play a role smoothly in the process of purifying the permeate;

[0055] And when the combing plate 21 moves vertically, the pressurized flowing water flows through the cleaning groove 221, thereby concentrating on flushing the outer surface of the spherical filler located in the cleaning groove 221 and the inner wall of the combing hole 22; while cleaning the surface of the spherical filler, the cleaning liquid passing through the cleaning groove 221 can increase the contact degree between the inner wall of the combing hole 22 and the surface of the combing plate 21 close to the edge of the combing hole 22 and the cleaning liquid, so that the residual impurities that may adhere to these parts are further effectively flushed and cleaned, thereby ensuring the normal operation of the combing hole 22.

[0056] Embodiment 3: Based on Embodiment 1, as shown in the accompanying drawings of the specification Figure 1-6 As shown, the connecting rod 26 is elastically connected to the telescopic end of the telescopic device 113. The elastic connection here can be in a variety of ways, which can achieve a small-amplitude high-frequency vibration effect between the connecting rod 26 and the telescopic end of the telescopic device 113, and achieve the effect of promoting the spherical filler to pass through the combing hole 22 more smoothly, all of which are applicable to the present application; a possible implementation scheme is provided here, for example, the protrusion at the end of the connecting rod 26 is embedded in the hole set on the telescopic end of the telescopic device 113, and the two are connected by a spring; a vibration device 261 is provided at the end of the connecting rod 26, and the vibration device 261 here can be a device such as a micro vibration motor. After starting, it can achieve continuous small-amplitude high-frequency vibration in the vertical direction between the connecting rod 26 and the telescopic end of the telescopic device 113;

[0057] Specific workflow: Based on the specific workflow in the first embodiment, when the telescopic device 113 is started, the vibration device 261 located on the top of the connecting rod 26 is started at the same time, so that the combing plate 21 moves in the vertical direction and also vibrates with a small amplitude and a high frequency; in this way, during the movement of the combing plate 21, the spherical fillers in contact are driven to vibrate together; under the action of vibration, on the one hand, the impurities adhering to the surface and the gap of the spherical fillers fall off under the action of vibration, and are separated from the spherical fillers at an accelerated speed;

[0058] On the other hand, the vibration accelerates the movement of the spherical fillers on the upper surface of the combing plate 21, thereby facilitating the spherical fillers on the combing plate 21 that are in contact with the gap surface between the combing holes 22. Under the action of vibration, they are accelerated to move to both sides and smoothly enter the combing holes 22 to pass through, thereby accelerating the efficiency of the spherical fillers passing through the combing holes 22, reducing obstacles during the movement of the combing plate 21, and strengthening the combing and screening effect of the combing plate 21 on the stacked spherical fillers, ensuring that the spherical fillers can be cleaned more fully, thereby improving the purification efficiency of the permeate.

[0059] Embodiment 4: Based on Embodiment 3, as shown in the accompanying drawings of the specification Figure 1-7 As shown, a combing tube 23 is fixedly arranged at the gap between the combing holes 22 on the combing plate 21, the combing tube 23 is arranged vertically, and the joint between the combing plate 21 and the combing tube 23 is located at the middle position on the combing tube 23, and the top and bottom openings of the combing tube 23 are both arranged in a trumpet shape;

[0060] The inner diameter of the middle part of the combing tube 23 is larger than the diameter of the catalytic self-electrolysis filler, that is, the diameter of the spherical filler, and the inner wall surface of the combing tube 23 is evenly provided with guide protrusions 24; the upper and lower surfaces of the guide protrusions 24 are both inclined; the ends of the guide protrusions 24 are made of elastic material and are rounded, the guide protrusions 24 at the same vertical height are asymmetrically arranged, and the guide protrusions 24 located on both sides of the inner wall of the combing tube 23 can be arranged staggered in the vertical direction, and there are only an odd number of guide protrusions 24 at the same vertical height, and they are asymmetrical;

[0061] Specific working process: Based on the specific working process in the third embodiment, the gap between the combing tubes 23 is set so that a single spherical filler can pass smoothly, while the spherical fillers that are adhered to each other and formed into a group cannot pass smoothly; therefore, during the downward movement of the combing plate 21, the independent spherical filler can smoothly enter the gap between the combing tubes 23 and pass through the combing holes 22, and can also enter the inside of the combing tubes 23 and pass;

[0062] When the spherical filler passes through the combing tube 23, the spherical filler contacts the guide protrusions 24 inside the combing tube 23, so that the surface of the spherical filler is scraped and impurities adhering to the surface are removed; and because the guide protrusions 24 are staggered in the vertical direction, the spherical filler continues to roll through the combing tube 23 under the action of asymmetric external forces; during the rolling process, different surfaces of the spherical filler are evenly scraped by the guide protrusions 24 and flushed by the concentrated flowing cleaning liquid through the combing tube 23, so that impurities adhering to the surface of the spherical filler are cleaned more fully; the flowing cleaning liquid in the combing tube 23 is affected by the inclined surface when passing through the guide protrusions 24, and is guided to obliquely flush the surface of the spherical filler, so that the flushing and cleaning effect on the surface of the spherical filler is more sufficient, and the spherical filler is promoted to roll, so that the cleaning effect on the outer surface of the spherical filler is more uniform;

[0063] Furthermore, when the combing tube 23 moves downward, because the end of the combing tube 23 protrudes from the surface of the combing plate 21, after contacting the accumulated spherical fillers, the independent spherical fillers can smoothly pass through the combing tube 23 or the combing hole 22 and enter the other side of the combing plate 21; while the agglomerated spherical fillers that adhere to each other are difficult to pass through, thereby achieving the screening of the accumulated spherical fillers; as the combing tube 23 continues to move downward, the end of the combing tube 23 is embedded in the agglomerated spherical fillers, and the vibration of the combing tube 23 causes the agglomerated spherical fillers to separate from each other under the flushing action of the cleaning liquid, and the impurities in the gaps are also exposed and fall off due to concentrated flushing; in this way, the problem of agglomeration of the spherical fillers adhering to each other can be effectively eliminated, and the impurities adhering to the spherical fillers can be cleaned more fully, ensuring that the spherical fillers can play a better role in the process of purifying the permeate;

[0064] When the combing tube 23 moves upward with the combing plate 21 and is embedded in the clumped spherical fillers that may exist on the upper side, the cleaning liquid flowing from the bottom to the top enters through the bottom opening of the combing tube 23, and rushes out from the end of the combing tube 23 embedded in the clumped spherical fillers on the upper side, directly flushing the inside of the clumped spherical fillers, and further acting on the spherical fillers, so that the clumped spherical fillers are dispersed, and impurities mixed in the gaps are exposed and then flushed clean, thereby improving the cleaning efficiency of the spherical fillers.

[0065] Embodiment 5: Based on Embodiment 4, as shown in the accompanying drawings of the specification Figure 1-7As shown, guide plates 25 are arranged at the top and bottom openings of the combing tube 23. The guide plates 25 are arranged in a circular pattern around the central axis of the combing tube 23. The guide plates 25 are arranged in a tilted manner along the same rotation direction. The combing tube 23 includes a fixed portion 231 in the middle and rotating portions 232 at both ends. The guide plates 25 are located on the rotating portion 232. The rotating portion 232 is rotatably connected to the fixed portion 231. A bearing is arranged at the rotating connection portion. By arranging the bearing, the friction resistance of the rotating portion 232 when rotating relative to the fixed portion 231 is reduced, so that the rotating portion 232 rotates more smoothly.

[0066] Specific working process: Based on the specific working process in the fourth embodiment, when the combing tube 23 moves downward, the upward cleaning liquid flushes the surface of the guide plate 25. Because the guide plate 25 is inclined and annularly distributed, the force exerted on the guide plate 25 by the upward cleaning liquid when passing through the guide plate 25 can separate a component force tangent to the arc corresponding to the distribution position of the guide plate 25, thereby prompting the guide plate 25 to drive the rotating part 232 to start rotating relative to the fixed part 231;

[0067] The rotating guide vane 25 acts on the clumped spherical filler along with the moving end of the combing tube 23, which can more effectively move the spherical filler, so that the clumped spherical filler is accelerated to separate and disintegrate from each other; and the rotating guide vane 25 can more effectively scrape the impurities adhering to the surface of the spherical filler, so that the impurities fall off faster, so that the spherical filler is cleaned more fully, ensuring more sufficient contact with the permeate, and the catalytic self-electrolysis reaction is more thorough; the centrifugal effect of rotation can also accelerate the falling off of impurities adhering to the rotating part 232 and the guide vane 25 located at the end of the combing tube 23, so that the rotating part 232 and the guide vane 25 themselves are effectively cleaned.

[0068] Embodiment 6: Based on Embodiment 5, as shown in the accompanying drawings of the specification Figure 1-7 As shown, the connecting rod 26 is hollow inside and has a transmission channel 262. The top of the transmission channel 262 is connected to an external cleaning water source through a connecting pipe 263. The cleaning water source here can be a water supply source of the backwash system 16. The cleaning liquid is supplied to the inside of the transmission channel 262 through the connecting pipe 263 through the action of the connected water pump. The connecting pipe 263 here can adopt a telescopic hose structure. In this way, during the startup process of the telescopic device 113, the change in the length of the connecting pipe 263 can adapt to the change in the position of the connecting rod 26, thereby ensuring smooth transportation of the cleaning liquid.

[0069] The interior of the combing plate 21 is hollow and communicated with the transmission channel 262, and the hollow part of the combing plate 21 is not communicated with the interior of the combing hole 22. An annular cleaning cavity 233 is arranged inside the side wall of the combing tube 23, and the cleaning cavity 233 communicates with the hollow part inside the combing plate 21; a cleaning hole 234 is arranged on the inner wall of the combing tube 23 at the gap between the guide protrusions 24, and the cleaning hole 234 communicates with the interior of the cleaning cavity 233, and the cleaning hole 234 is a conical hole, and the small end of the cleaning hole 234 is located near the outside, so as to improve the impact of the cleaning liquid when it flows out; flushing holes 235 are evenly arranged on the outer wall of the combing tube 23, and the flushing holes 235 are inclined to the surface of the combing plate 21;

[0070] Specific workflow: On the basis of the specific workflow in Example 5, when the telescopic device 113 is started, the water pump connected to the connecting pipe 263 is started, and the cleaning liquid is pumped out from the external water source and sent into the connecting pipe 263. Then, the connecting pipe 263 sends the cleaning liquid into the transmission channel 262, and flows downward into the hollow part inside the combing plate 21; after the cleaning liquid accumulates in the hollow part inside the combing plate 21, it flows into the cleaning cavity 233 inside the interconnected combing tube 23, and a part of the cleaning liquid inside the cleaning cavity 233 flows out laterally through the cleaning holes 234 located in the gaps between the guide protrusions 24, so that on the one hand, it can effectively flush the impurities and debris that may be adhered to the gaps between the guide protrusions 24, clean the surface of the guide protrusions 24, and ensure the normal operation of the guide protrusions 24; on the other hand, it flows out along the gaps between the guide protrusions 24, so that the flow velocity of the water flow inside the combing tube 23 is increased, the impact effect is enhanced and acts on the spherical filler passing through, and the surface of the spherical filler is further cleaned to ensure the normal operation of the spherical filler;

[0071] Furthermore, a portion of the cleaning liquid inside the cleaning chamber 233 will flow out through the flushing holes 235 evenly arranged on the outer wall of the combing tube 23, flushing the surface of the combing plate 21 located around the combing tube 23, thereby cleaning the impurities adhering to the surface of the combing plate 21, especially the upper and lower surfaces of the combing plate 21 close to the edges of the combing holes 22. Under the flushing action of the cleaning liquid flowing out of the flushing holes 235, the impurities adhering to the upper surface of the combing plate 21 are fully fallen off and leave with the flowing cleaning liquid, thereby ensuring the normal operation of the combing plate 21 and allowing the impurities located inside the electrolysis zone 142 to be cleaned more fully.

[0072] Embodiment 7: Based on Embodiment 6, as shown in the accompanying drawings of the specification Figure 1-7 As shown, a guide groove 236 is provided on the inner wall of the combing tube 23, and the end of the guide groove 236 points to the gap of the guide plate 25, and a cleaning hole 234 close to the end of the combing tube 23 can be provided in the guide groove 236 and obliquely points to the end of the combing tube 23;

[0073] Specific workflow: Based on the specific workflow in the sixth embodiment, when the combing tube 23 moves normally, the power of the water pump connected to the connecting tube 263 is low, and the cleaning liquid flowing into the cleaning chamber 233 is less at this time, and the impact of the cleaning liquid flowing out of the cleaning hole 234 is smaller, so that when the direction is opposite to the movement direction of the spherical filler through the combing tube 23, it will not cause a large resistance to the spherical filler while flushing the surface of the spherical filler, affecting the passage of the spherical filler;

[0074] However, when the spherical fillers that are clumped and adhere to each other are closely combined, the guide plate 25 is embedded in the clumped spherical fillers along with the end of the combing tube 23, and it is difficult to separate the spherical fillers, so that the movement of the combing plate 21 is blocked; at this time, the power of the water pump connected to the connecting pipe 263 can be adjusted from the external control interface 13, so that the cleaning liquid flowing into the cleaning chamber 233 increases, the internal water pressure increases, and the impact force of the outflowing cleaning liquid is enhanced;

[0075] At this time, the cleaning liquid flowing out through the cleaning hole 234 in the middle part accumulates inside the combing tube 23 and then flows out from both ends. The cleaning liquid flowing out from the ends concentrates on impacting the agglomerated spherical fillers. The greater impact force can accelerate the disintegration and separation of the agglomerated spherical fillers, causing the impurities and pollutants contained therein to be released and flow out with the cleaning liquid.

[0076] Furthermore, after the cleaning liquid flows out of the inclined cleaning hole 234 near the end and flows out of the guide groove 236, it flows upward along the guide groove 236 and impacts the corresponding guide plate 25, prompting it to rotate. The guide plate 25 with a stronger rotation trend further moves the agglomerated spherical fillers, thereby accelerating the disintegration of the agglomerated spherical fillers, and further making the spherical fillers be cleaned more thoroughly, thereby ensuring that the electrolytic purification process of the permeate is more thorough.

[0077] Furthermore, it should be added that the combing plate 21, combing tube 23 and other components located inside the electrolysis zone 142 in the present application are made of materials with good corrosion resistance, which can effectively resist the corrosion of acidic penetrants; the connecting rod 26 is made of materials with good insulation properties to inhibit the current from being transmitted along the connecting rod 26 during the electrolysis process, thereby avoiding affecting the operation of the connected telescopic device 113; and intercepting parts such as filters are arranged at the inner ends of the cleaning hole 234 and the flushing hole 235 to avoid impurities in the external electrolysis zone 142 from entering the cleaning hole 234 or the flushing hole 235 during normal electrolysis purification, causing blockage problems; and in the process of starting to spray the cleaning liquid, the cleaning liquid sprayed from the inside to the outside will also clean the inside of the cleaning hole 234 and the flushing hole 235 to ensure their normal operation.

[0078] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A landfill leachate full-scale treatment equipment, comprising a pretreatment module, a biochemical treatment module and a product treatment module, wherein the pretreatment module comprises a catalytic self-electrolysis device and an ozone catalytic oxidation system for comprehensive pretreatment of the leachate; the biochemical treatment module is used to purify the pretreated permeate, and the product treatment module dries, solidifies and recycles the impurity products in the permeate purification process; The catalytic self-electrolysis equipment comprises an electrolytic catalytic tower (1), wherein the electrolytic catalytic tower (1) comprises a tower body (11) and a bottom bracket (12), and a control interface (13) is provided on the outer surface of the tower body (11) for controlling the operation of various components; The tower body (11) also includes a liquid inlet pipe (111) installed at the top of the tower body (11), and a liquid outlet pipe (112) installed at the bottom; an electrolytic layer (14) is arranged at a middle position inside the tower body (11), and the electrolytic layer (14) includes a packing disk (141) arranged at the upper and lower sides and an electrolytic zone (142) formed in the middle, and the electrolytic zone (142) is filled with spherical catalytic self-electrolytic packing; an aeration system (15) and a backwash system (16) are also arranged inside the tower body (11); the characteristics are: The electrolysis zone (142) further includes a combing module (2) for cleaning the spherical catalytic self-electrolysis filler; the combing module (2) includes a combing plate (21), the combing plate (21) is located inside the electrolysis zone (142), and is connected to a telescopic device (113) installed on the top of the tower body (11) through a connecting rod (26); The combing plate (21) is evenly provided with combing holes (22), and the diameter of the combing holes (22) is larger than the average diameter of the catalytic self-electrolysis filler.

2. A landfill leachate full-scale treatment device according to claim 1, characterized in that: A cleaning groove (221) is provided on the inner wall of the combing hole (22), and the cleaning groove (221) extends in a direction away from the center of the combing hole (22); the raised parts of the gaps between the cleaning grooves (221) form a cleaning plate (222), and the end part of the cleaning plate (222) is arranged to be made of elastic material.

3. A landfill leachate full-scale treatment device according to claim 1, characterized in that: The connecting rod (26) is elastically connected to the telescopic end on the telescopic device (113), and a vibration device (261) is provided on the end of the connecting rod (26).

4. A landfill leachate full-scale treatment device according to claim 3, characterized in that: A combing tube (23) is provided on the combing plate (21) in the gap between the combing holes (22), the combing tube (23) is vertically arranged, and the top and bottom openings of the combing tube (23) are both arranged in a trumpet shape; The inner diameter of the middle part of the combing tube (23) is larger than the diameter of the catalytic self-electrolysis filler, and flow-guiding protrusions (24) are evenly arranged on the inner wall surface of the combing tube (23); the upper and lower surfaces of the flow-guiding protrusions (24) are both inclined.

5. A landfill leachate full-scale treatment device according to claim 4, characterized in that: The ends of the guide protrusions (24) are rounded, and the guide protrusions (24) at the same vertical height are arranged asymmetrically.

6. A landfill leachate full-scale treatment device according to claim 5, characterized in that: Guide plates (25) are arranged at the top and bottom openings of the combing tube (23), and the guide plates (25) are distributed in a circle around the central axis of the combing tube (23). The guide plates (25) are all arranged at an inclination.

7. A landfill leachate full-scale treatment device according to claim 6, characterized in that: The combing tube (23) comprises a fixed portion (231) in the middle and rotating portions (232) at both ends, the guide plate (25) is located on the rotating portion (232), the rotating portion (232) is rotationally connected to the fixed portion (231), and a bearing is provided at the rotating connection portion.

8. A landfill leachate full-scale treatment device according to claim 7, characterized in that: The connecting rod (26) is hollow inside to form a transmission channel (262), and the top of the transmission channel (262) is connected to an external cleaning water source through a connecting pipe (263); The combing plate (21) is hollow inside and communicates with the transmission channel (262); an annular cleaning cavity (233) is provided inside the side wall of the combing tube (23); the cleaning cavity (233) is communicated with the hollow part inside the combing plate (21); a cleaning hole (234) is provided on the inner wall of the combing tube (23) at a position located in the gap between the guide protrusions (24); the cleaning hole (234) is communicated with the inside of the cleaning cavity (233), and the cleaning hole (234) is a conical hole.

9. A landfill leachate full-scale treatment device according to claim 8, characterized in that: Flushing holes (235) are evenly arranged on the outer wall of the combing tube (23), and the flushing holes (235) are inclined to point toward the surface of the combing plate (21).

10. A landfill leachate full-scale treatment device according to claim 9, characterized in that: A guide groove (236) is provided on the inner wall of the combing tube (23), and the end of the guide groove (236) points to the gap portion of the guide plate (25).

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