Leachate wastewater resource utilization and concentration treatment system

Abstract

This utility model discloses a leachate wastewater resource-based concentration and treatment system, relating to the technical field of wastewater purification and extraction equipment. It includes a support platform with support rods fixed to its four corners, a cavity structure within the support platform, a first treatment box installed on one side of the front of the top surface of the support platform, and a second treatment box installed on the other side of the front of the top surface of the support platform; a third treatment box installed on one side of the rear of the top surface of the support platform, and a fourth treatment box installed on the other side of the rear of the top surface of the support platform; and a fifth treatment box, with its bottom surface abutting against the top surface of the support platform, installed between the third and fourth treatment boxes. In this utility model, the first treatment box collects the raw liquid, the third treatment box performs initial filtration separation through an FO membrane, the fifth treatment box achieves fine filtration purification through an RO membrane, the fourth treatment box stores the extract, and the second treatment box collects purified water, forming a complete graded treatment process. Each connecting pipe and water pump work together to provide transport power, promoting efficient circulation of the raw liquid and extract, and improving the filtration effect.

Description

Technical Field

[0001] This utility model relates to the technical field of wastewater purification and extraction equipment, and in particular to a leachate wastewater resource-based concentration and treatment system. Background Technology

[0002] Leachate wastewater has a complex composition and high pollutant concentration, placing high demands on the staged purification capacity, conveying efficiency, and sealing performance of treatment equipment. However, existing leachate treatment equipment has many shortcomings in practical applications:

[0003] The lack of completeness and clear grading in the processing flow, coupled with the absence of dedicated modules for raw liquid collection, primary filtration, fine filtration and purification, extract storage, and purified water collection in most equipment, makes it difficult to form a coherent processing chain. This often results in gaps in the processing steps, leading to low overall processing efficiency. Furthermore, the filtration stages are limited, with most equipment employing only a single-stage filtration structure, failing to achieve a graded combination of primary and fine filtration. This makes it difficult to deeply remove contaminants from the leachate, and the purification efficiency cannot meet the requirements for high-purity treatment. Insufficient sealing performance, with a lack of effective sealing design at the connection points of various components (such as pipe joints), and the absence of reliable flange connections and sealing structures, easily leads to leachate leakage. This not only causes secondary environmental pollution but may also damage internal equipment components, increasing maintenance costs and safety hazards. Therefore, these problems need to be addressed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a leachate wastewater resource-based concentration and treatment system.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a leachate wastewater resource concentration and treatment system, comprising a support platform with support rods fixed to the four corners of its bottom surface, a cavity structure inside the support platform, and a hinged door on one side of the front end of the support platform; a first treatment box is installed on one side of the front end of the top surface of the support platform, and a second treatment box is installed on the other side of the front end of the top surface of the support platform; a third treatment box is installed on one side of the rear end of the top surface of the support platform, and a fourth treatment box is installed on the other side of the rear end of the top surface of the support platform; a fifth treatment box, with its bottom surface abutting against the top surface of the support platform, is installed between the third and fourth treatment boxes.

[0006] Preferably, a first water inlet pipe communicating with the inner cavity is installed in the middle of the top surface of the first processing tank, and a first water outlet pipe communicating with the inner cavity is installed in the middle of the bottom surface of the first processing tank; a feed pipe penetrating the top surface of the first processing tank is installed on one side of the first water inlet pipe, a cleaning pipe communicating with the inner cavity is installed in the lower middle of one side of the first processing tank, a first circulation pipe communicating with the inner cavity is installed in the middle of the top surface of the second processing tank, and a second water inlet pipe communicating with the inner cavity is installed in the middle of the bottom surface of the second processing tank; a second water outlet pipe communicating with the inner cavity is installed in the lower middle of the other side of the second processing tank.

[0007] Preferably, the third, fourth, and fifth processing boxes are each equipped with a first bidirectional pipe connecting to their respective inner cavities at the rear end of the middle of their top surfaces, and the third, fourth, and fifth processing boxes are each equipped with a second bidirectional pipe connecting to their respective inner cavities at the front end of the middle of their top surfaces; the third, fourth, and fifth processing boxes are each equipped with a third bidirectional pipe connecting to their respective inner cavities at the rear end of the middle of their bottom surfaces, and the third, fourth, and fifth processing boxes are each equipped with a fourth bidirectional pipe connecting to their respective inner cavities at the front end of the middle of their bottom surfaces.

[0008] Preferably, the top surface of the support platform is provided with mounting holes for a matching water outlet pipe, a second water inlet pipe, a third bidirectional pipe, and a fourth bidirectional pipe. The water outlet pipe and the fourth bidirectional pipe installed in the third treatment tank are connected by a first connecting pipe via a flange. A first water pump is installed in the middle of the outer side of the first connecting pipe. The first water inlet pipe and the second bidirectional pipe installed in the third treatment tank are connected by a second connecting pipe via a flange. The third bidirectional pipe installed in the third treatment tank and the fourth bidirectional pipe installed in the fifth treatment tank are connected by a third connecting pipe via a flange. A fourth water pump is installed in the middle of the outer side of the third connecting pipe. The first bidirectional pipe installed in the third treatment tank and the fifth treatment tank are connected by a fourth connecting pipe via a flange.

[0009] Preferably, a fifth connecting pipe is connected between the third bidirectional pipe installed in the fifth treatment tank and the fourth treatment tank via a flange. A second water pump is installed in the middle of the outer side of the fifth connecting pipe. Both the second bidirectional pipe installed in the fifth treatment tank and the first bidirectional pipe installed in the fourth treatment tank are connected to an L-shaped first connecting pipe via flanges. A first electronic valve is connected between the two first connecting pipes via flanges. Both the second bidirectional pipe installed in the fourth treatment tank and the first circulation pipe installed in the second treatment tank are connected to an L-shaped second connecting pipe via flanges. A second electronic valve is connected between the two second connecting pipes via flanges. Furthermore, a sixth connecting pipe is connected between the fourth bidirectional pipe installed in the fourth treatment tank and the second inlet pipe installed in the second treatment tank via a flange. A third water pump is installed in the middle of the outer side of the sixth connecting pipe.

[0010] Preferably, the top surfaces of the third and fifth processing boxes are provided with lateral limiting grooves, and the inner walls of the upper and lower front and rear ends of the limiting grooves are provided with lateral sealing grooves. Support frames are slidably connected in both limiting grooves, and sealing strips are installed in the sealing grooves. The other end of the sealing strips abuts against the support frames. Furthermore, an FO membrane is installed between the slidably connected support frames in the third processing box, and an RO membrane is installed between the slidably connected support frames in the fifth processing box.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. In this utility model, the first treatment tank collects the raw liquid, the third treatment tank performs initial filtration separation through an FO membrane, the fifth treatment tank achieves fine filtration purification through an RO membrane, the fourth treatment tank stores the extract, and the second treatment tank collects purified water, forming a complete graded treatment process; each connecting pipe and water pump work together to provide transport power, promoting efficient circulation of the raw liquid and extract, and improving the filtration effect; the circulation is precisely controlled by the first and second electronic valves to avoid backflow and waste, and the two-stage filtration of FO and RO membranes further improves the purification efficiency; the flange connection and sealing strip enhance the sealing performance to prevent leachate leakage, ensure the safety of the treatment process, and avoid equipment damage and resource waste.

[0013] 2. In this utility model, the third and fifth treatment boxes and the support frame can be equipped with FO membranes, RO membranes or other filter membranes as needed, without the need for customized special filter components, and are suitable for different leachate treatment processes; the corrosion-resistant rubber sealing strip tightly abuts against the support frame, improving the sealing performance, preventing leachate or extract leakage, and avoiding secondary environmental pollution and safety hazards; the mounting holes on the top surface of the support platform are precisely adapted to each connecting pipe, without the need for additional brackets, reducing space occupation, and meeting the requirements of leachate treatment equipment for compact structure and reliable operation. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model;

[0016] Figure 2 This is a bottom view of the overall structure proposed in this utility model;

[0017] Figure 3 This is a partial sectional view of the overall structure proposed in this utility model;

[0018] Figure 4 The present utility model proposes Figure 3Enlarged diagram of part A in the middle.

[0019] The following are the components listed in the diagram: 1. Support platform; 2. Opening / closing door; 3. First processing tank; 4. Second processing tank; 5. Third processing tank; 6. Fourth processing tank; 7. Fifth processing tank; 8. First inlet pipe; 9. First outlet pipe; 10. Cleaning pipe; 11. Feed pipe; 12. First circulation pipe; 13. Second outlet pipe; 14. Second inlet pipe; 15. First bidirectional pipe; 16. Second bidirectional pipe; 17. Third bidirectional pipe; 18. Fourth bidirectional pipe; 19. Third water pump; 20. Second connecting pipe; 21. Fifth connecting pipe; 22. Second water pump; 23. Fourth connecting pipe; 24. Third connecting pipe; 25. RO membrane; 26. First electronic valve; 27. First connecting pipe; 28. Sixth connecting pipe; 29. ​​Second electronic valve; 30. Support frame; 31. Sealing strip; 32. FO membrane; 33. First water pump; 34. Fourth water pump. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Example: See Figures 1 to 4The leachate wastewater resource-based concentration and treatment system of this utility model includes a support platform 1 with support rods fixed to the four corners of its bottom surface. The support platform 1 facilitates the installation of various components required for this product via external bolts and connecting assemblies. The support platform 1 has a cavity structure, and a hinged door 2 is connected to one side of its front end. The door 2 allows operators to inspect components and change different pipeline connections according to different process requirements. Operators should hold a confined space operation certificate from the China Emergency Management Bureau. A first treatment tank 3 is installed on one side of the front top of the support platform 1, facilitating the collection of raw wastewater. A second treatment tank 4 is installed on the other side of the front top of the support platform 1, facilitating the collection of raw wastewater. Pump 33 and the first connecting pipe 27 pump the stock solution in the first treatment tank 3 into the third treatment tank 5; the third treatment tank 5 is installed on one side of the rear end of the top surface of the support platform 1, which facilitates the first permeation of the stock solution with the FO membrane 32; and a fourth treatment tank 6 is installed on the other side of the rear end of the top surface of the support platform 1, which facilitates the placement of the extract required for subsequent permeation; a fifth treatment tank 7 is installed between the third treatment tank 5 and the fourth treatment tank 6, with its bottom surface abutting against the top surface of the support platform 1, which facilitates the permeation of the stock solution from the first permeation with the RO membrane 25; a first water inlet pipe 8 is installed in the middle of the top surface of the first treatment tank 3, which connects to the inner cavity, and facilitates the connection of the second connecting pipe 8 through a flange and external bolts. Pipe 20; and a first water outlet pipe 9 communicating with the inner cavity is installed in the middle of the bottom surface of the first treatment tank 3; the first water outlet pipe 9 facilitates the connection of the first connecting pipe 27 via a flange and external bolts; a feed pipe 11 penetrating the top surface of the first treatment tank 3 is installed on one side of the first water inlet pipe 8, and the feed pipe 11 facilitates the connection with the external waste liquid transport pipe via a flange and external bolts; a cleaning pipe 10 communicating with the inner cavity is installed in the lower middle of one side of the first treatment tank 3, and the cleaning pipe 10 facilitates the connection with the external cleaning pipe via a flange and external bolts; a first circulation pipe 12 communicating with the inner cavity is installed in the middle of the top surface of the second treatment tank 4, and the first circulation pipe 12 facilitates the connection with the second connecting pipe via a flange and external bolts; and a first connecting pipe 12 communicating with the inner cavity is installed in the middle of the bottom surface of the second treatment tank 4. A second inlet pipe 14 is connected to the inner cavity; the second inlet pipe 14 facilitates the connection of the sixth connecting pipe 28 via a flange and external bolts; a second outlet pipe 13 connected to the inner cavity is installed on the lower middle part of the other side of the second treatment box 4, which facilitates the connection to the external collection pipe via a flange and external bolts; the third treatment box 5, the fourth treatment box 6, and the fifth treatment box 7 are all equipped with a first bidirectional pipe 15 connected to their respective inner cavities at the rear end of the middle part of the top surface, which facilitates the connection between subsequent components and can be connected to different pipelines according to subsequent process requirements; and the third treatment box 5, the fourth treatment box 6, and the fifth treatment box 7 are all equipped with a second bidirectional pipe 16 connected to their respective inner cavities at the front end of the middle part of the top surface;The second bidirectional pipe 16 facilitates communication between subsequent components and can be connected to different pipelines according to subsequent process requirements; the third processing box 5, the fourth processing box 6, and the fifth processing box 7 are all equipped with a third bidirectional pipe 17 connecting their respective internal cavities at the rear end of the middle of their bottom surfaces, facilitating communication between subsequent components and allowing connection to different pipelines according to subsequent process requirements; and the third processing box 5, the fourth processing box 6, and the fifth processing box 7 are equipped with a fourth bidirectional pipe 18 connecting their respective internal cavities at the front end of the middle of their bottom surfaces, facilitating communication between subsequent components and allowing connection to different pipelines according to subsequent process requirements.

[0022] In this utility model, the top surface of the support platform 1 is provided with mounting holes for a first outlet pipe 9, a second inlet pipe 14, a third bidirectional pipe 17, and a fourth bidirectional pipe 18. A first connecting pipe 27 connects the first outlet pipe 9 and the fourth bidirectional pipe 18 installed in the third treatment tank 5 via a flange. The first connecting pipe 27 facilitates the connection between the first treatment tank 3 and the third treatment tank 5. A first water pump 33 is installed in the middle of the outer side of the first connecting pipe 27, providing high pressure to the first connecting pipe 27 and improving its transport efficiency. A second connecting pipe 20 connects the first inlet pipe 8 and the second bidirectional pipe 16 installed in the third treatment tank 5 via a flange. The second connecting pipe 20 facilitates the connection between the first outlet pipe 9 and the fourth bidirectional pipe 18 installed in the third treatment tank 5 without F... The original solution permeated through membrane 32 circulates from the third treatment tank 5 back to the first treatment tank 3, and also agitates and stirs the precipitate in the first treatment tank 3 to prevent scale formation and provide a cleaning basis for subsequent cleaning. A third connecting pipe 24 connects the third bidirectional pipe 17 installed in the third treatment tank 5 and the fourth bidirectional pipe 18 installed in the fifth treatment tank 7 via a flange. The third connecting pipe 24 facilitates the pumping of the original solution after the first permeation with the extract into the fifth treatment tank 7 via the second water pump 22. A fourth water pump 34 is connected to the middle of the outer side of the third connecting pipe 24, providing pressure to the third connecting pipe 24. A third connecting pipe 34 connects the first bidirectional pipe 15 installed in the third treatment tank 5 and the fifth treatment tank 7 via a flange. The fourth connecting pipe 23 facilitates the pumping of the raw liquid in the fifth treatment tank 7 into the third treatment tank 5 via the fourth water pump 34 for permeation circulation; a fifth connecting pipe 21 connects the third bidirectional pipe 17 installed in the fifth treatment tank 7 and the fourth treatment tank 6 via a flange, facilitating communication between the two tanks; a second water pump 22 is installed on the outer middle of the fifth connecting pipe 21, providing pressure to the fifth connecting pipe 21; and both the second bidirectional pipe 16 installed in the fifth treatment tank 7 and the first bidirectional pipe 15 installed in the fourth treatment tank 6 are connected to an L-shaped first connecting pipe via flanges, with a first electronic valve 26 connecting the two first connecting pipes via flanges. The first electronic valve 26 facilitates the control of the circulation of the extract between the fourth processing tank 6 and the fifth processing tank 7; the second bidirectional pipe 16 installed in the fourth processing tank 6 and the first circulation pipe 12 installed in the second processing tank 4 are both connected to an L-shaped second connecting pipe through a flange, and the two second connecting pipes are connected to a second electronic valve 29 through a flange. The second electronic valve 29 facilitates subsequent cleaning and prevents the raw liquid filtered by the RO membrane 25 from flowing back into the second processing tank 4 through the second electronic valve 29; and the fourth bidirectional pipe 18 installed in the fourth processing tank 6 and the second inlet pipe 14 installed in the second processing tank 4 are connected to a sixth connecting pipe 28 through a flange, which facilitates the connection between the second processing tank 4 and the fourth processing tank 6.A third water pump 19 is installed in the middle of the outer side of the sixth connecting pipe 28, which provides pressure to the sixth connecting pipe 28. Limiting grooves are horizontally formed on the top surfaces of the third treatment tank 5 and the fifth treatment tank 7. Sealing grooves are horizontally formed on the inner walls of the upper and lower front and rear ends of the limiting grooves. Support frames 30 are slidably connected within both limiting grooves, allowing for the installation of different RO membranes 25, FO membranes 32, or other filtration membranes according to process requirements. Sealing strips 31 are installed within the sealing grooves, with the other end of each sealing strip abutting against the support frame 30. The sealing strips 31 provide a seal between the support frame 30 and the external connection. The sealing strips 31 should be made of corrosion-resistant rubber additives. Furthermore, an FO membrane 32 is installed between the slidably connected support frames 30 in the third treatment tank 5, facilitating the first permeation filtration of the raw solution. An RO membrane 25 is installed between the slidably connected support frames 30 in the fifth treatment tank 7, facilitating the permeation filtration of the raw solution after the first filtration.

[0023] Working principle: When using this utility model, the operator should connect the cleaning pipe 10 to the external cleaning pipe through the flange and bolts, the feed pipe 11 to the external waste liquid transport pipe through the flange and bolts, and the second water outlet pipe 13 to the external collection pipe through the flange and bolts. Then check the connection and sealing status between the other components of this product. In particular, check the seal between the support frame 30 and the sealing strip 31. After checking that there are no problems, the equipment can be turned on.

[0024] After the equipment is powered on, the first water pump 33, the second water pump 22, the third water pump 19, and the fourth water pump 34 are started. Simultaneously, the external pump connected to the waste liquid transport pipe is started, transporting the raw liquid through the feed pipe 11 to the first treatment tank 3. Due to the start of the first water pump 33, the raw liquid flowing into the first treatment tank 3 will be pumped into the third treatment tank 5 through the first outlet pipe 9 and the first connecting pipe 27. The raw liquid passes through the FO membrane 32 installed in the third treatment tank 5, which, together with the extract, creates osmotic pressure to separate the water in the raw liquid. Because the osmotic rate is lower than that of the raw liquid entering the tank, the water in the raw liquid is separated. The rate at which the stock solution enters the first processing tank 3 is such that when the stock solution in the first processing tank 3 reaches a certain volume, the pumping of the stock solution stops. The stock solution in the first processing tank 3 and the third processing tank 5 is circulated through the first water inlet pipe 8 and the second connecting pipe 20. Water adhering to the extract, along with the extract, is pumped into the fifth processing tank 7 by the third bidirectional pipe 17 and the third connecting pipe 24 installed in the third processing tank 5, and the fourth water pump 34. Then, it is pumped into the fifth processing tank 7 by the fifth connecting pipe 24, which is connected to the third bidirectional pipe 17 and the fourth bidirectional pipe 18 installed in the fifth processing tank 7. The extract is pumped into the fourth processing tank 6 by the second water pump 22 connected to the first processing tank 1. After filtration and permeation by the RO membrane 25 in the fourth processing tank 6, the water is separated. The first electronic valve 26 is opened. Since the water separation is not complete in one step, the extract will flow back into the fifth processing tank 7 through the first electronic valve 26 and the second bidirectional pipe 16 installed in the fifth processing tank 7 for another circulation. The separated water will not flow into the second processing tank 4 through the first circulation pipe 12 due to the closure of the second electronic valve 29. At the same time, the extract in the fifth processing tank 7 will also be circulated back into the third processing tank 5 by the first bidirectional pipe 15 installed in the fifth processing tank 7 and the third processing tank 5 in conjunction with the fourth water pump 34 and the fourth connecting pipe 23. The water separated into the fourth processing tank 6 will enter the second processing tank 4 through the third bidirectional pipe 17 and the second water inlet pipe 14 connected to it, in conjunction with the sixth connecting pipe 28 and the third water pump 19. The water in the second processing tank 4 will be extracted by the second water outlet pipe 13 in conjunction with the external collection pipe and the external pump connected to the collection pipe. This is the circulation process.

[0025] After completing one process requirement, the second electronic valve 29 needs to be opened to pump clean water into the second outlet pipe 13. The first water pump 33, the second water pump 22, the third water pump 19 and the fourth water pump 34 rotate in opposite directions to discharge the cleaning waste liquid through the cleaning pipe 10 until the liquid discharged from the cleaning pipe 10 is clean. Since the RO membrane 25 and the FO membrane 32 have a long service life, they do not need to be replaced frequently. They only need to be replaced at the corresponding time. After cleaning, the operator also needs to open the switch door 2 to check the electrical components installed in the cavity of the support platform 1. After the check is correct, the switch door 2 can be closed.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A leachate wastewater resource utilization and concentration treatment system, comprising a support platform (1) with support rods fixed to the four corners of its bottom surface, characterized in that: The support platform (1) has a cavity structure inside, and a switch door (2) is hinged to one side of the front end of the support platform (1); a first processing box (3) is installed on one side of the front end of the top surface of the support platform (1), and a second processing box (4) is installed on the other side of the front end of the top surface of the support platform (1); a third processing box (5) is installed on one side of the rear end of the top surface of the support platform (1), and a fourth processing box (6) is installed on the other side of the rear end of the top surface of the support platform (1); a fifth processing box (7) with its bottom surface abutting against the top surface of the support platform (1) is installed between the third processing box (5) and the fourth processing box (6).

2. The leachate wastewater resource utilization and concentration treatment system according to claim 1, characterized in that: The first processing box (3) has a first water inlet pipe (8) connected to the inner cavity installed in the middle of the top surface, and a first water outlet pipe (9) connected to the inner cavity installed in the middle of the bottom surface of the first processing box (3); a feed pipe (11) penetrating the top surface of the first processing box (3) is installed on one side of the first water inlet pipe (8), a cleaning pipe (10) connected to the inner cavity is installed in the lower middle of one side of the first processing box (3), a first circulation pipe (12) connected to the inner cavity is installed in the middle of the top surface of the second processing box (4), and a second water inlet pipe (14) connected to the inner cavity is installed in the middle of the bottom surface of the second processing box (4); a second water outlet pipe (13) connected to the inner cavity is installed in the lower middle of the other side of the second processing box (4).

3. The leachate wastewater resource utilization and concentration treatment system according to claim 2, characterized in that: The third processing box (5), the fourth processing box (6) and the fifth processing box (7) are each equipped with a first bidirectional pipe (15) connecting their respective inner cavities at the rear end of the middle of the top surface, and the third processing box (5), the fourth processing box (6) and the fifth processing box (7) are each equipped with a second bidirectional pipe (16) connecting their respective inner cavities at the front end of the middle of the top surface; the third processing box (5), the fourth processing box (6) and the fifth processing box (7) are each equipped with a third bidirectional pipe (17) connecting their respective inner cavities at the rear end of the middle of the bottom surface, and the third processing box (5), the fourth processing box (6) and the fifth processing box (7) are each equipped with a fourth bidirectional pipe (18) connecting their respective inner cavities at the front end of the middle of the bottom surface.

4. The leachate wastewater resource utilization and concentration treatment system according to claim 3, characterized in that: The top surface of the support platform (1) is provided with mounting holes for the first water outlet pipe (9), the second water inlet pipe (14), the third bidirectional pipe (17), and the fourth bidirectional pipe (18). The first water outlet pipe (9) and the fourth bidirectional pipe (18) installed in the third treatment box (5) are connected by a first connecting pipe (27) through a flange. The first water pump (33) is connected to the middle of the outer side of the first connecting pipe (27). The first water inlet pipe (8) and the second bidirectional pipe (16) installed in the third treatment box (5) are connected by a second connecting pipe (20) through a flange. The third bidirectional pipe (17) installed in the third treatment box (5) and the fourth bidirectional pipe (18) installed in the fifth treatment box (7) are connected by a third connecting pipe (24) through a flange. The fourth water pump (34) is connected to the middle of the outer side of the third connecting pipe (24). The fourth connecting pipe (23) is connected to the first bidirectional pipe (15) installed in the third treatment box (5) and the fifth treatment box (7).

5. The leachate wastewater resource utilization and concentration treatment system according to claim 4, characterized in that: The fifth processing tank (7) and the fourth processing tank (6) are connected by a fifth connecting pipe (21) via a flange to the third bidirectional pipe (17). A second water pump (22) is installed in the middle of the outer side of the fifth connecting pipe (21). The second bidirectional pipe (16) installed in the fifth processing tank (7) and the first bidirectional pipe (15) installed in the fourth processing tank (6) are both connected by an L-shaped first connecting pipe via a flange. A first electronic valve (26) is connected between the two first connecting pipes via a flange. The fourth processing tank... The second bidirectional pipe (16) installed in the box (6) and the first circulation pipe (12) installed in the second treatment box (4) are both connected to an L-shaped second connecting pipe through a flange. A second electronic valve (29) is connected between the two second connecting pipes through a flange. A sixth connecting pipe (28) is connected between the fourth bidirectional pipe (18) installed in the fourth treatment box (6) and the second water inlet pipe (14) installed in the second treatment box (4) through a flange. A third water pump (19) is connected to the middle of the outer side of the sixth connecting pipe (28).

6. The leachate wastewater resource utilization and concentration treatment system according to claim 5, characterized in that: The top surfaces of the third processing box (5) and the fifth processing box (7) are horizontally provided with limiting grooves. The inner walls of the front and rear ends above and below the limiting grooves are horizontally provided with sealing grooves. Support frames (30) are slidably connected in both limiting grooves. Sealing strips (31) are installed in the sealing grooves. The other end of the sealing strips (31) abuts against the support frames (30). FO membranes (32) are installed between the support frames (30) slidably connected in the third processing box (5), and RO membranes (25) are installed between the support frames (30) slidably connected in the fifth processing box (7).

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