A full-quantitative treatment device and process for landfill leachate

Abstract

The application discloses a landfill leachate full-quantitative treatment device and process, and relates to the technical field of wastewater treatment. The landfill leachate full-quantitative treatment device comprises a shell, two cover bodies and an electrolysis assembly. The two cover bodies are movably arranged on the two sides of the shell. The electrolysis assembly comprises a conductive part and multiple electrolysis modules. The conductive part is connected to electricity and simultaneously supplies power to the multiple electrolysis modules. The electrolysis module comprises a frame and multiple electrode plates. The multiple electrode plates form a flow guide channel in the frame. The landfill leachate full-quantitative treatment process comprises the following steps: S1, electro-catalytic oxidation; S2, primary biochemical treatment; S3, ozone oxidation treatment; and S4, secondary biochemical treatment. The application can perform full-quantitative treatment on the concentrated liquid intercepted by NF, and can effectively improve the effect and efficiency of full-quantitative treatment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wastewater treatment, in particular to a landfill leachate full-scale treatment device and process. BACKGROUND

[0002] Landfill leachate is a high-concentration organic wastewater formed during landfill and stacking of garbage due to precipitation, groundwater seepage and decomposition of organic matter, and is also a typical high-salt, high-ammonia nitrogen and high-organic wastewater. In 2024, the Indirect Discharge Standard was added to the Standard for Pollution Control on Domestic Waste Landfill Sites GB16889, and the discharge requirements for COD, ammonia nitrogen, total nitrogen and other indicators were reduced. Therefore, landfill leachate full-scale treatment has technical and economic feasibility.

[0003] Currently, the existing landfill leachate treatment process is generally two-stage A / O (anaerobic / aerobic) + UF (ultrafiltration) + NF (nanofiltration) + RO (reverse osmosis water treatment). The concentrated liquid intercepted by NF is usually returned to the landfill site, but it cannot meet the indirect discharge standard, so it cannot completely solve the pollution problem.

[0004] Therefore, for the concentrated liquid intercepted by NF, how to perform full-scale treatment to return it to the landfill site in a state meeting the indirect discharge standard is one of the most important problems at this stage. SUMMARY

[0005] The present application provides a landfill leachate full-scale treatment device and process, which can perform full-scale treatment on the concentrated liquid intercepted by NF, and can effectively improve the effect and efficiency of full-scale treatment.

[0006] In one aspect, the present application provides a landfill leachate full-scale treatment device, which adopts the following technical solution:

[0007] A landfill leachate full-scale treatment device, comprising a shell, two covers and an electrolysis assembly;

[0008] The shell has a cavity inside, and openings are formed through both sides of the shell; a liquid inlet is formed in the bottom of the shell and communicates with the cavity, and a liquid outlet is formed in the top of the shell and communicates with the cavity;

[0009] Two covers are arranged on both sides of the shell, and the covers are movably connected to the shell and are used to control the opening and closing of the openings of the cavity;

[0010] The electrolysis assembly comprises an electrically conductive part and a plurality of electrolysis modules; the electrically conductive part is detachably connected to the cover, the electrolysis modules are detachably connected to the shell and are distributed in the cavity along the vertical direction at equal intervals, and the electrically conductive part is connected to electricity and simultaneously energizes the plurality of electrolysis modules.

[0011] The electrolysis module comprises a frame and a plurality of electrode plates; the frame is connected with the shell and has a space inside for the concentrated solution to pass through; the electrode plates are arranged horizontally, a plurality of the electrode plates are distributed equidistantly in the vertical direction, and the plurality of electrode plates form a flow guide channel inside the frame for the concentrated solution to flow along a serpentine trajectory.

[0012] By adopting the above technical scheme, during the process of electrocatalytic oxidation of the concentrated solution intercepted by the NF, the concentrated solution can flow through the electrolysis module along the flow guide channel, thereby being uniformly and effectively subjected to electrocatalytic oxidation, and the effect and efficiency of the total quantization treatment are effectively improved; at the same time, when the concentrated solution does not need to be subjected to electrocatalytic oxidation, the staff can conveniently open the cover to clean the scaling on the electrode plates, so as to maintain the effect and efficiency of the electrolysis module in electrocatalytic oxidation of the concentrated solution.

[0013] Optionally, the electrode plates are rotationally connected with the frame, the rotation axis thereof is vertical, and the opening of the cavity is for the electrode plates to rotate out.

[0014] By adopting the above technical scheme, when the electrode plates of the electrolysis module are cleaned, the electrode plates can be controlled to rotate out after the cover is opened, which has a larger cleaning space, makes the cleaning process simpler and more convenient, and can reduce the probability of scaling falling back into the cavity.

[0015] Optionally, the rotation connection positions of adjacent electrode plates and the frame are respectively located at both ends of the frame, one end of the electrode plate away from the rotation axis thereof has a clamping portion, the inner side of the frame is provided with a plurality of clamping grooves for the clamping portion to be clamped into, and the electrode plate is formed with a through opening on one side of the clamping portion for the concentrated solution to flow through.

[0016] By adopting the above technical scheme, the structural stability of the electrode plates during electrocatalytic oxidation of the concentrated solution can be improved, and the probability of deformation and damage of the electrode plates due to the action force of the concentrated solution flow can be reduced; at the same time, two staff can conveniently clean the electrode plates on both sides of the shell, and the increased distance between the adjacent electrode plates rotationally extended out facilitates cleaning.

[0017] Optionally, a plurality of elastic first sealing members are further included.

[0018] The first sealing members are arranged on the inner side of the frame, and when the clamping portion is clamped into the clamping groove, both ends of the electrode plate are clamped by the two first sealing members from top to bottom.

[0019] By adopting the technical scheme, the structural stability of the electrode plate in electro-catalytic oxidation of the concentrated solution can be further improved, and the probability of the concentrated solution passing through the gap between the electrode plate and the frame can be effectively reduced, so that the stability and reliability of the electro-catalytic oxidation of the concentrated solution flowing along the flow guide channel can be further improved.

[0020] Optionally, the first sealing member has an arc surface near one side of the adjacent flow guide channel region for guiding the concentrated solution to flow along the flow guide channel.

[0021] By adopting the technical scheme, the structural stability of the electrode plate in electro-catalytic oxidation of the concentrated solution can be further improved, and the probability of the concentrated solution passing through the gap between the electrode plate and the frame can be effectively reduced, so that the stability and reliability of the electro-catalytic oxidation of the concentrated solution flowing along the flow guide channel can be further improved.

[0022] Optionally, the second sealing member is elastic.

[0023] The second sealing member is horizontally arranged on one side of the cover body for sealing the opening of the cavity, the cover body is rotationally connected with the shell, and the rotation axis of the cover body is parallel to the rotation axis of the electrode plate; when the cover body closes the opening of the cavity, the two ends of the electrode plate are clamped by the two second sealing members from top to bottom.

[0024] By adopting the technical scheme, the structural stability of the electrode plate in electro-catalytic oxidation of the concentrated solution can be further improved, and the probability of the concentrated solution passing through the gap between the electrode plate and the frame can be effectively reduced, so that the stability and reliability of the electro-catalytic oxidation of the concentrated solution flowing along the flow guide channel can be further improved.

[0025] Optionally, when the cover body rotates to the limit position away from the shell and the electrode plate rotates to the limit position away from the frame, one side of the electrode plate is clamped by the two adjacent second sealing members from top to bottom.

[0026] The two rotating rods are rotationally arranged on the two cover bodies, the rotation axis of the rotating rod is parallel to the rotation axis of the cover body, and the rotating rod is located at the end of the cover body away from the rotation axis of the cover body; one end of the second sealing member is fixedly connected with the adjacent rotating rod, the rotating rod drives the second sealing member to clean the electrode plate, and the end of the rotating rod is located on one side of the cover body to facilitate the operation of the staff.

[0027] By adopting the technical scheme, the staff can conveniently clean the electrode plate after the electrode plate is rotated and extended, and the structural stability of the electrode plate during cleaning can be effectively improved, and the probability of damage of the electrode plate during cleaning can be reduced.

[0028] Optionally, a plurality of third sealing members with elasticity are further included;

[0029] The third sealing member is arranged at a position close to the rotation axis of the electrode plate, and the end away from the electrode plate abuts against the inner side of the frame body, and in the process of rotation of the electrode plate, the third sealing member is in contact with the bottom of the upper adjacent electrode plate, thereby achieving a cleaning effect on the corner of the frame body and its adjacent corner.

[0030] By adopting the above technical scheme, the sealing performance of the edge of the rotating position of the electrode plate can be improved while facilitating the rotation of the electrode plate, and the third sealing member can clean the scale that is difficult to be cleaned by the staff during the process of the extension of the electrode plate.

[0031] In one aspect, the application provides a garbage leachate full-scale treatment process, which adopts the following technical scheme:

[0032] A garbage leachate full-scale treatment process, comprising the following steps:

[0033] S1, electro-catalytic oxidation;

[0034] S2, primary biochemical treatment;

[0035] S3, ozone oxidation treatment;

[0036] S4, secondary biochemical treatment;

[0037] In the S1 step, the above-mentioned garbage leachate full-scale treatment device is used.

[0038] Optionally, when the S1 step is stopped, the plurality of electrolysis modules are cleaned, comprising the following steps:

[0039] S1, the electrolysis module is powered off;

[0040] S2, the cover body moves to open the opening of the cavity;

[0041] S3, the electrode plate is rotated to extend out of the cavity;

[0042] S4, the surface of the electrode plate, the inner side of the frame body, and the inner side of the shell are cleaned.

[0043] In summary, the application includes at least one of the following beneficial effects:

[0044] 1. The concentrated liquid retained by the NF can be efficiently and effectively fully quantized, and the product after full quantization meets the indirect discharge standard;

[0045] 2. The electrolytic module can be conveniently cleaned by the staff, the influence of fouling on the effect and efficiency of electrocatalytic oxidation is reduced, and the additional energy consumption caused by the increase of resistance due to fouling is saved;

[0046] 3. The structural stability of the electrolytic module during electrocatalytic oxidation can be effectively improved, and the stability and reliability of the electrolytic module for electrocatalytic oxidation of concentrated liquid can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0047] Figure 1 is a structural schematic view of the cover of the garbage leachate full-quantitative treatment device when the cover is closed;

[0048] Figure 2 is a structural schematic view of the cover of the garbage leachate full-quantitative treatment device when the cover is closed;

[0049] Figure 3 is an enlarged view of A in Figure 2

[0050] Figure 4 is a sectional view of the garbage leachate full-quantitative treatment device along the width direction of the shell;

[0051] Figure 5 is an enlarged view of B in Figure 4

[0052] Figure 6 is a sectional view of the garbage leachate full-quantitative treatment device along the length direction of the shell;

[0053] Figure 7 is an enlarged view of C in Figure 6

[0054] Figure 8 is a structural schematic view of the cover of the garbage leachate full-quantitative treatment device when the cover is opened;

[0055] Figure 9 is an enlarged view of D in Figure 8

[0056] Reference signs: 1, shell; 11, cavity; 12, liquid inlet; 13, liquid outlet; 14, flow guide channel; 2, electrolytic assembly; 21, conductive part; 22, electrolytic module; 221, frame; 2211, clamping groove; 222, electrode plate; 2221, clamping part; 2222, through hole; 3, cover; 4, first sealing element; 5, second sealing element; 6, third sealing element; 7, rotating rod. DETAILED DESCRIPTION

[0057] The application will be described in further detail below with reference to the accompanying drawings. Figures 1-9 The application will be described in further detail below with reference to the accompanying drawings.​​​​

[0058] Embodiment 1:

[0059] With reference to Figure 1 and Figure 2 , the embodiment of the present application discloses a full-quantitative treatment device for landfill leachate, which is used for electro-catalytic oxidation treatment of concentrated liquid intercepted by NF, so as to realize full-quantitative treatment of landfill leachate and make the refluxing concentrated liquid meet the indirect discharge standard.

[0060] With reference to Figure 2 and Figure 3 , the full-quantitative treatment device comprises a shell 1, an electrolysis assembly 2, two cover bodies 3, a plurality of first sealing members 4, a plurality of second sealing members 5 and a plurality of third sealing members 6. The electrolysis assembly 2 is used for electro-catalytic oxidation of the concentrated liquid. The shell 1 and the two cover bodies 3 jointly form a space for electro-catalytic oxidation of the concentrated liquid. The first sealing members 4, the second sealing members 5 and the third sealing members 6 are all used for improving the sealing property, so as to facilitate the concentrated liquid to be electro-catalytically oxidized by the electrolysis assembly 2 uniformly and effectively along the specified path.

[0061] With reference to Figure 1 and Figure 4 , the shell 1 has a cuboid structure as a whole, is fixedly installed in a vertical state, and has the largest size in the height direction. The shell 1 has a cavity 11 for electro-catalytic oxidation of the concentrated liquid in the inside thereof. The bottom of the shell 1 is provided with a liquid inlet 12 communicating with the cavity 11, and the top of the shell 1 is provided with a liquid outlet 13 communicating with the cavity 11, so that the concentrated liquid flows from the bottom to the top towards the direction close to the liquid outlet 13 after entering the cavity 11 through the liquid inlet 12.

[0062] With reference to Figure 1 and Figure 2 , the cavity 11 forms openings through the two sides of the shell 1 in the width direction. The two cover bodies 3 are respectively installed on the two sides of the shell 1 in the width direction and are respectively used for controlling the opening and closing of the two openings of the cavity 11. The cover body 3 has a rectangular plate structure as a whole. One length side of the cover body 3 is rotationally connected with the shell 1. The rotation axis of the cover body 3 is parallel to the length direction of the cover body 3 and parallel to the height direction of the shell 1. The rotation connection positions of the two cover bodies 3 and the shell 1 are respectively close to the two ends of the shell 1 in the length direction. In actual application, one side of the cover body 3 has a sealing structure. When the cover body 3 is rotated to the limit position towards the shell 1, the cover body 3 can completely cover the opening of the cavity 11 and the sealing structure can effectively seal between the cover body 3 and the shell 1.

[0063] With reference to Figure 1 and Figure 4 , the electrolysis assembly 2 comprises a conductive member 21 and a plurality of electrolysis modules 22. The electrolysis module 22 is used for directly contacting with the concentrated liquid, so as to electro-catalytically oxidize the concentrated liquid. The conductive member 21 is used for supplying power to the plurality of electrolysis modules 22.

[0064] Referring to Figure 4 and Figure 5 , the electrolysis module 22 is installed in the cavity 11, and a plurality of electrolysis modules 22 are distributed equidistantly in the vertical direction in the cavity 11, and the liquid inlet 12 and the liquid outlet 13 have a certain interval between adjacent electrolysis modules 22. In the embodiment, the electrolysis assembly 2 preferably includes three electrolysis modules 22; in other embodiments, the number of electrolysis modules 22 can be more or less.

[0065] Referring to Figure 2 and Figure 6 , the electrolysis module 22 includes a frame 221 and a plurality of electrode plates 222.

[0066] Referring to Figure 2 and Figure 7 , the frame 221 is a hollow cuboid structure as a whole, and the two sides in the width direction and the two sides in the height direction are formed with openings communicating with the internal space, and it is detachably connected with the shell 1; after the frame 221 is installed in the cavity 11, its height direction is parallel to the height direction of the shell 1, and its length direction is parallel to the length direction of the shell 1. In the embodiment, the inner side of the shell 1 preferably has a protrusion for facilitating the installation and positioning of the frame 221, and the detachable connection between the frame 221 and the shell 1 is preferably achieved by a plurality of bolts and nuts; since the above-mentioned detachable connection method is a common prior art, it will not be described here, and the related structure is omitted in the drawings.

[0067] Referring to Figure 2 and Figure 8 , the electrode plate 222 is a rectangular plate structure as a whole, which is horizontally installed on the frame 221, and the corner positions thereof are rotationally connected with the corner positions of the frame 221, and the rotation axis thereof is parallel to the height direction of the frame 221 and parallel to the thickness direction thereof, and the electrode plate 222 can enter and exit the internal space of the frame 221 through the opening on one side of the frame 221 in the process of rotating relative to the frame 221. A plurality of electrode plates 222 are distributed equidistantly in the height direction of the frame 221 on the frame 221, and the rotationally connected positions of the upper and lower adjacent electrode plates 222 and the frame 221 are located at the opposite corner positions of the frame 221, and the rotation direction of the electrode plate 222 is consistent with the rotation direction of the cover 3 adjacent to the rotation axis thereof.

[0068] Referring to Figure 7 and Figure 8, the electrode plate 222 extends outwardly at one end away from its rotation axis a clamping portion 2221, and the clamping portion 2221 and the rotation axis of the electrode plate 222 are located on the same side of the width direction of the electrode plate 222; the inner side of both ends of the frame body 221 in the length direction is provided with a plurality of clamping grooves 2211 matched with the clamping portion 2221, when the plurality of electrode plates 222 are rotated to the limit position in the direction close to the frame body 221, the plurality of electrode plates 222 are aligned in the vertical direction, and the clamping portion 2221 is clamped into the corresponding clamping groove 2211; the clamping portion 2221 is formed with an opening 2222 close to the other side of the width direction of the electrode plate 222, when the plurality of electrode plates 222 are rotated to the limit position in the direction close to the frame body 221, the space between the plurality of adjacent electrode plates 222 and the plurality of openings 2222 will jointly form a flow guide channel 14 in a serpentine trajectory from bottom to top, so that the concentrated solution flowing through the electrolysis module 22 in the cavity 11 can be fully and effectively subjected to electro-catalytic oxidation.

[0069] With reference to Figure 1 and Figure 5 , the conductive part 21 is detachably mounted on the side of the cover 3 away from the opening of the cavity 11, when the cover 3 is rotated to the limit position in the direction close to the shell 1, the conductive part 21 can simultaneously supply power to the plurality of electrolysis modules 22, so that the plurality of electrode plates 222 can electro-catalytically oxidize the concentrated solution in the cavity 11. In this embodiment, it is preferred that the inside of the frame body 221 has a conductive structure, and the conductive part 21 can supply power to the plurality of electrode plates 222 through the conductive structure inside the frame body 221 after being connected to the power supply; since the conductive part 21 and the frame body 221 having the above functions are both common prior art, they will not be described here, and their expressions are omitted in the drawings.

[0070] With reference to Figure 5 and Figure 8 , the first sealing part 4 is elastic and has a strip-shaped structure as a whole, and is fixedly installed on the inner side surface of both ends of the frame body 221 in the length direction, and the length direction is parallel to the width direction of the frame body 221; the plurality of first sealing parts 4 located on the same side of the frame body 221 are distributed equidistantly along the height direction of the frame body 221 in pairs, the two first sealing parts 4 of the same group correspond to one electrode plate 222, and the two first sealing parts 4 of the same group close to the clamping groove 2211 are located above and below the corresponding clamping groove 2211, respectively.

[0071] When the electrode plate 222 is rotated to the limit position in the direction close to the frame body 221, both ends of the length direction are clamped between the adjacent two first sealing parts 4, and the two first sealing parts 4 clamp the end of the electrode plate 222, at this time, the first sealing part 4 can effectively reduce the probability of the concentrated solution passing through the gap between the end of the electrode plate 222 in the length direction and the inner side of the frame body 221. In this embodiment, it is preferred that the first sealing part 4 is made of rubber.

[0072] With reference toFigure 3 And Figure 7 Further, preferably, the first seal 4 has a curved surface on the side away from the position where it is in contact with the electrode plate 222, for guiding the concentrated solution flowing along the flow guide channel 14 to smoothly flow through the corner, reducing the speed loss of the concentrated solution flowing through the corner, while effectively improving the position stability of the two ends of the electrode plate 222 in the length direction relative to the frame 221, to reduce the probability of damage caused by the force exerted on the ends of the electrode plate 222 in the length direction by the flow of the concentrated solution.

[0073] Referring to Figure 3 And Figure 9 The third seal 6 is elastic, and a plurality of third seals 6 correspond to a plurality of electrode plates 222 one by one, and the third seal 6 is fixedly installed at the corner position of the electrode plate 222 close to the rotation axis of the electrode plate 222; in order to facilitate the rotation adjustment of the electrode plate 222 relative to the frame 221, the electrode plate 222 has an arc-shaped design at the corner position close to the rotation axis of the electrode plate 222, and the arc-shaped design forms a gap between the electrode plate 222 and the frame 221; the third seal 6 is used to fill the gap, and the third seal 6 can keep filling the gap by elastic deformation during the rotation of the electrode plate 222 relative to the frame 221, thereby effectively preventing the concentrated solution from flowing through the gap.

[0074] The rotation of the electrode plate 222 in the direction away from the frame 221 is limited, and when the electrode plate 222 is rotated to the limit position in the direction away from the frame 221, the length direction of the electrode plate 222 is parallel to the width direction of the frame 221. When the electrode plate 222 is rotated to the limit position relative to the frame 221, the third seal 6 fills the gap; during the rotation switching of the electrode plate 222 between the two limit positions, the third seal 6 elastically deforms by abutting against the inner side of the frame 221, and the end of the bent and deformed third seal 6 will abut against the adjacent electrode plate 222, and the third seal 6 can clean the scale accumulated near the rotation axis of the electrode plate 222 during this process, reducing the inconvenience of the staff when cleaning the scale in the dead angle. In the embodiment, the third seal 6 is preferably made of rubber; and the third seal 6 is preferably a two-piece structure, the two pieces of the structure are fixedly connected at one end close to the electrode plate 222 and can be bent and deformed at the other end, and the two-piece structure has a tendency to overlap under the condition of no external force; when the electrode plate 222 is rotated to the limit position, the two pieces of the structure overlap to fill the gap; during the rotation of the electrode plate 222, the two pieces of the structure will bend and deform upward and downward respectively to clean the structure around the gap; since the above-mentioned third seal 6 is a common prior art, it will not be described here, and it is only briefly shown in the drawings.

[0075] Referring to Figure 5 And Figure 8The second seal 5 is in strip structure and has elasticity, and the length direction of the second seal 5 is perpendicular to the length direction of the cover body 3. A rotating rod 7 is rotatably installed on the cover body 3 at a position away from the rotating axis of the cover body 3, and the rotating axis of the rotating rod 7 coincides with the axis of the rotating rod 7 and is parallel to the rotating axis of the cover body 3. One end of the second seal 5 in the length direction is fixedly connected with the rotating rod 7. The second seals 5 are aligned along the axis direction of the rotating rod 7, and the second seals 5 can rotate relative to the cover body 3 along with the rotating rod 7. The second seals 5 connected with the same rotating rod 7 are distributed at equal intervals along the axis direction of the rotating rod 7.

[0076] With reference to Figure 1 and Figure 8 , the cover body 3 is limited in the process of rotating away from the shell 1. When the cover body 3 rotates away from the shell 1 to the limit position, the width direction of the cover body 3 is parallel to the width direction of the shell 1. The rotating rod 7 is also limited in the process of rotating relative to the cover body 3. When the rotating rod 7 rotates to make the second seal 5 rotate away from the cover body 3 to the limit position, the length direction of the second seal 5 is perpendicular to the width direction of the cover body 3. When the rotating rod 7 rotates to make the second seal 5 rotate close to the cover body 3 to the limit position, the second seal 5 is in contact with the cover body 3, and the length direction of the second seal 5 is parallel to the width direction of the cover body 3.

[0077] With reference to Figure 5 and Figure 8 , when the cover body 3 rotates to the limit position close to the shell 1 in the state that the rotating rod 7 rotates to make the second seal 5 rotate close to the cover body 3 to the limit position, the two second seals 5 in the same group correspond to one electrode plate 222. The two sides of the width direction of the electrode plate 222 can be clamped into the two second seals 5 in the same group, that is, the two second seals 5 in the same group clamp the electrode plate 222 from above and below at the width direction ends of the electrode plate 222. At this time, the second seal 5 can effectively reduce the probability of the concentrated liquid passing through the gap between the width direction end of the electrode plate 222 and the cover body 3.

[0078] When the cover 3 is rotated by the rotating rod 7 to rotate the second sealing element 5 to the limit position in the direction away from the cover 3, and the plurality of electrode plates 222 are rotated to the limit position in the direction away from the frame 221, the plurality of second sealing elements 5 can clean the fouling on the surface of the plurality of electrode plates 222 in the process of rotating the plurality of second sealing elements 5 to the limit position in the direction away from the cover 3 by the rotating rod 7. In the embodiment, one end of the rotating rod 7 in the axis direction has a structure convenient for the staff to control the rotation, which can be hidden inside when the cover 3 is closed and exposed outside when the cover 3 is opened. Since the rotating rod 7 with the above function is a common prior art, it will not be described here, and only a brief representation is made in the drawings.

[0079] The implementation principle of the garbage leachate full-quantitative treatment device in the embodiment of the application is as follows:

[0080] In the process of electrocatalytic oxidation of the concentrated liquid, the concentrated liquid enters the cavity 11 through the liquid inlet 12, and then flows through the plurality of electrolysis modules 22 in sequence along the flow guide channel 14, and then flows out through the liquid outlet 13. In the process of flowing of the concentrated liquid in the cavity 11, the conductive part 21 supplies power to the plurality of electrolysis modules 22, so that the plurality of electrode plates 222 electrocatalytically oxidize the concentrated liquid in the cavity 11.

[0081] In the process of electrocatalytic oxidation of the concentrated liquid, fouling will occur on the electrolysis module 22. In order to reduce the influence of fouling on the effect and efficiency of subsequent electrocatalytic oxidation, when the concentrated liquid does not need to be electrocatalytically oxidized, the staff can control the cover 3 to rotate to open the opening of the cavity 11, and then control the plurality of electrode plates 222 to rotate to extend away from the frame 221, so that the staff can clean the fouling on the surface of the electrode plate 222 and other positions, to ensure the stability of subsequent electrocatalytic oxidation.

[0082] Embodiment 2

[0083] The embodiment of the application discloses a garbage leachate full-quantitative treatment process, which is used for treating the concentrated liquid intercepted by NF, so as to realize full-quantitative treatment of the garbage leachate, and make the reflux concentrated liquid meet the indirect discharge standard, and comprises the following steps:

[0084] S1, electrocatalytic oxidation.

[0085] The garbage leachate full-quantitative treatment device disclosed in application embodiment 1 is used for electrocatalytic oxidation treatment of the concentrated liquid.

[0086] S2, primary biochemical treatment.

[0087] The relatively easy-to-degrade organic matter in the concentrated liquid is consumed by the domesticated salt-tolerant microorganism, and nitrification and denitrification denitrification is completed.

[0088] S3, ozone oxidation treatment.

[0089] By using the strong oxidizing property of ozone, the concentrated liquid is directly attacked and decomposed.

[0090] S4, secondary biochemical treatment.

[0091] The intermediate products such as small molecular organic acids in the concentrated liquid are oxidized and decomposed by microorganisms (without special domestication).

[0092] Among them, when the S1 step is stopped, that is, without the electro-catalytic oxidation of the concentrated liquid by the waste leachate full-scale treatment device disclosed in Embodiment 1, the staff cleans the scaling on the plurality of electrolytic modules 22, including the following steps:

[0093] S1, the electrolytic module 22 is powered off.

[0094] The power supply to the conductive part 21 is turned off, so that the staff can clean the scaling under safe conditions.

[0095] S2, the cover 3 moves to open the opening of the cavity 11.

[0096] Control the cover 3 to rotate to the limit position away from the shell 1, so that the two openings of the cavity 11 are opened.

[0097] S3, the electrode plate 222 rotates to extend out of the cavity 11.

[0098] Control the plurality of electrode plates 222 to rotate to the limit position away from the frame 221, so that the electrode plates 222 are located outside the cavity 11, so that the staff has more operation space to facilitate cleaning.

[0099] S4, clean the surface of the electrode plate 222, the inner side of the frame 221 and the inner side of the shell 1.

[0100] According to the scaling condition of different positions, the scaling is cleaned.

[0101] Among them, for the scaling on the surface of the electrode plate 222:

[0102] When the scaling degree is light, that is, the cleaning difficulty is low, control the plurality of electrode plates 222 to rotate to extend out, and then control the rotating rod 7 to drive the plurality of second sealing pieces 5 to rotate, so that the scaling on the surface of the plurality of electrode plates 222 is cleaned at the same time through the second sealing piece 5, which can ensure the cleaning effect and greatly improve the cleaning efficiency.

[0103] When the fouling degree is heavy, i.e. the cleaning difficulty is high, the plurality of electrode plates 222 are cleaned in turn, and the rotation and extension of the electrode plates 222 are controlled one by one, so that the upper and lower parts of the electrode plates 222 have large operation spaces, and the staff can clean the fouling by using tools, thereby effectively reducing the limitation of the operation space shortage on the cleaning effect and efficiency of the staff.

[0104] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A landfill leachate full-volume treatment device, characterized in that, It includes a shell (1), two covers (3) and an electrolysis assembly (2); The shell (1) has a cavity (11) inside, and it forms an opening through both sides of the shell (1); the bottom of the shell (1) is provided with a liquid inlet (12) communicating with the cavity (11), and the top of the shell (1) is provided with a liquid outlet (13) communicating with the cavity (11). The two covers (3) are respectively disposed on both sides of the housing (1). The covers (3) are movably connected to the housing (1), and their movement is used to control the opening and closing of the cavity (11). The electrolysis assembly (2) includes a conductive element (21) and multiple electrolysis modules (22); the conductive element (21) is detachably connected to the cover (3), the electrolysis modules (22) are detachably connected to the shell (1) and are evenly distributed in the vertical direction in the cavity (11), and the conductive element (21) simultaneously powers multiple electrolysis modules (22) after being connected to electricity; The electrolysis module (22) includes a frame (221) and multiple electrode plates (222); the frame (221) is connected to the housing (1) and has a space inside for the concentrate to pass through; the electrode plates (222) are horizontally arranged, the multiple electrode plates (222) are evenly distributed in the vertical direction, and the multiple electrode plates (222) form a guide channel (14) inside the frame (221) for the concentrate to flow along a serpentine trajectory. The electrode plate (222) is rotatably connected to the frame (221), its rotation axis is vertical, and the opening of the cavity (11) allows the electrode plate (222) to rotate out. The rotatable connection positions of the adjacent electrode plates (222) and the frame (221) are respectively located at both ends of the frame (221). The electrode plate (222) has a snap-fit ​​part (2221) at one end away from its own rotation axis. The inner side of the frame (221) is provided with a plurality of snap-fit ​​grooves (2211) for the snap-fit ​​part (2221) to snap into. The electrode plate (222) has a through-hole (2222) for the flow of concentrated liquid on one side of the snap-fit ​​part (2221). It also includes multiple resilient first seals (4); The first sealing element (4) is disposed on the inner side of the frame (221). When the snap-fit ​​part (2221) is snapped into the snap-fit ​​groove (2211), both ends of the electrode plate (222) are clamped by the two first sealing elements (4) from above and below. It also includes multiple resilient second seals (5); The second sealing element (5) is horizontally disposed on one side of the cover (3) for sealing the opening of the cavity (11). The cover (3) is rotatably connected to the housing (1), and its rotation axis is parallel to the rotation axis of the electrode plate (222). When the cover (3) closes the opening of the cavity (11), both ends of the electrode plate (222) are clamped by the two second sealing elements (5) from above and below. When the cover (3) rotates to its limit position away from the housing (1) and the electrode plate (222) rotates to its limit position away from the frame (221), one side of the electrode plate (222) is clamped by two adjacent second seals (5). It also includes two rotating rods (7), which are respectively rotatably mounted on the two covers (3). Their rotation axes are parallel to the rotation axes of the covers (3), and they are located at the end of the covers (3) away from the rotation axis of the covers (3). One end of each of the multiple second sealing elements (5) is fixedly connected to the adjacent rotating rod (7). The rotating rod (7) rotates to drive the multiple second sealing elements (5) to clean the multiple electrode plates (222). One end of the rotating rod (7) is located on one side of the cover (3) for easy operation by the staff.

2. The landfill leachate full-volume treatment device according to claim 1, characterized in that, The first seal (4) has an arc surface on the side near the adjacent flow channel (14) area for guiding the concentrate to flow along the flow channel (14).

3. The landfill leachate full-volume treatment device according to claim 1, characterized in that, It also includes multiple resilient third seals (6); The third sealing element (6) is located near the rotation axis of the electrode plate (222). One end of the sealing element away from the electrode plate (222) abuts against the inner side of the frame (221). During the rotation of the electrode plate (222), the sealing element contacts the bottom of the electrode plate (222) above it, thus cleaning the frame (221) and its adjacent corner.

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