Landfill leachate leakage monitoring device

Abstract

The invention belongs to the technical field of landfill leachate leakage monitoring, and discloses a landfill leachate leakage monitoring device, which comprises a waterproof concrete layer, an impermeable layer and garbage, a plurality of groups of collecting cylinders are fixedly mounted on the waterproof concrete layer, and the landfill leachate leakage monitoring device further comprises collecting bottles positioned on the right sides and the front sides of the collecting cylinders, the collecting barrels are buried underground, and the multiple sets of collecting barrels are distributed in a 5 * 3 mode in a matrix mode. According to the device, a monitoring means is properly upgraded and optimized, the position of a leakage point can be rapidly determined, three groups of collection bottles distributed front and back correspond to A1-A3 respectively, five groups of collection bottles distributed left and right correspond to B1-B5 respectively, the positions of all groups of collection barrels are meshed, and the leakage point can be rapidly determined by observing whether different collection bottles contain leachate or not. The accurate two-dimensional coordinates of the collecting barrel filled with the leachate are determined through the A dimension and the B dimension, namely the leakage position is determined.

Description

Technical Field

[0001] The invention belongs to the technical field of landfill leachate leakage monitoring, in particular to a landfill leachate leakage monitoring device. Background Art

[0002] A landfill is a special area set up for the treatment of various types of garbage. In order to protect the soil and water environment around the landfill, it is necessary to monitor the leachate from the garbage and promptly detect leakage in the landfill so as to carry out repairs to prevent the leachate from penetrating into the underground soil and polluting the surrounding underground water and soil environment. Landfills have basically been treated with anti-seepage measures: geomembranes and clay layers are laid on the bottom, but with the passage of time and construction defects, leachate leakage is inevitable.

[0003] A Chinese invention patent with publication number CN115290256A discloses a landfill leachate leakage monitoring device. The patent adopts a point-to-point matrix method to set up multiple groups of collection cylinders for collecting leachate at the bottom of the landfill, and extracts the leachate through negative pressure. The leakage situation of the corresponding point is judged by the amount of leachate collected in the final collection bottle. However, this method has the disadvantages of high cost and poor monitoring effect. First, the point-to-point, one-to-one collection method can indeed accurately judge the leachate leakage situation of the corresponding point, but this is not very meaningful. Once the leakage occurs, it is only a matter of time before the situation worsens. The cost of accurately judging the leakage amount of each point is too high, more structures are required, and the monitoring effect is also poor. Therefore, the one-to-one point monitoring method will extend the monitoring cycle and reduce the monitoring efficiency of the device. Summary of the invention

[0004] The object of the present invention is to provide a landfill leachate leakage monitoring device to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a landfill leachate leakage monitoring device, comprising a waterproof concrete layer, an anti-seepage layer and garbage, wherein the waterproof concrete layer is fixedly installed with multiple groups of collecting cylinders, and also comprises collecting bottles located on the right and front sides of the collecting cylinders, wherein the collecting cylinders are buried underground, and multiple groups of the collecting cylinders are distributed in a matrix in the form of 5×3, and the inner walls of the collecting cylinders are respectively fixedly plugged with absorption tubes 1 and 2 that are distributed up and down and perpendicular to each other, and the axes of the absorption tubes 2 are horizontally distributed, and the ends of the multiple groups of the absorption tubes 2 that are horizontally equidistantly distributed are connected. They are fixedly connected to each other, the right end of the absorption tube 2 located on the far right is connected to the collecting bottle, and the multiple groups of absorption tubes distributed equidistantly in the longitudinal direction are fixedly connected to each other from head to tail, and the front end of the absorption tube 1 located at the front is connected to another group of collecting bottles, the top of the collecting cylinder is fixedly connected with connecting tube 2, the bottom end of the connecting tube 2 penetrates downward to the inner wall of the absorption tube 2 and is fixedly connected with a transfer tube, the right side of the top of the outer surface of the transfer tube is fixedly connected with a ventilation pipe, the bottom of the outer surface of the absorption tube 2 is fixedly connected with a liquid suction tube 1, and the bottom of the outer surface of the absorption tube 1 is fixedly connected with a liquid suction tube 2.

[0006] As a preferred solution of the present invention, the garbage is landfilled inside the anti-seepage layer, the waterproof concrete layer is pre-poured underground, and is provided with a reserved hole connected to the collecting cylinder, a filter screen is fixedly installed on the top of the inner wall of the collecting cylinder, the right end of the absorption tube 2 located on the far right and the front end of the absorption tube 1 directly in front are fixedly connected with a recovery pipe, the recovery pipe penetrates into the inner wall of the collecting bottle, the top of the collecting bottle is fixedly connected with a connecting tube 1, and the outer end of the connecting tube 1 is used to connect to a negative pressure source.

[0007] As a preferred embodiment of the present invention, the absorber tubes 2 are arranged in three rows parallel to each other, and the three rows of absorber tubes 2 are marked A1, A2 and A3 from front to back, and the absorber tubes 1 are arranged in five columns parallel to each other, and the five columns of absorber tubes 1 are marked B1, B2, B3, B4 and B5 from left to right.

[0008] As a preferred solution of the present invention, an isolation plate is fixedly connected to the bottom of the inner wall of the collecting cylinder, the outer surfaces of the pipette tube 1 and the pipette tube 2 are both movably sleeved with rings, the outer surfaces of the rings are fixedly sleeved with buoyancy rings, and the bottoms of the rings are fixedly connected with sealing rings.

[0009] As a preferred solution of the present invention, the isolation plate is inclined at 45° and isolates the first pipette tube and the second pipette tube from each other.

[0010] As a preferred solution of the present invention, the ventilation pipe penetrates upward through the outer surface of the second absorption tube and is connected with the outside.

[0011] As a preferred solution of the present invention, the leachate received in each group of the collecting tubes is isolated by an isolation plate and divided into two groups. The leachate in one group is collected into a collecting bottle located on the front side through absorption tube 1, and the leachate in the other group is collected into a collecting bottle located on the right side through absorption tube 2.

[0012] As a preferred solution of the present invention, the sealing ring is made of a rubber block and abuts against the bottom of the inner wall of the collecting tube, and the buoyancy ring is made of a foam block, and the outer ring surface of the buoyancy ring is inclined downward.

[0013] The beneficial effects of the present invention are as follows: 1. The device has appropriately upgraded and optimized the monitoring means, and can quickly determine the location of the leakage point. By setting up multiple groups of collecting tubes distributed in a 5×3 matrix to cover the bottom of the waterproof concrete layer, and inserting absorption tube 1 and absorption tube 2 on the outer surface of the collecting tube and perpendicular to each other, they correspond to the collection bottle on the right and the collection bottle on the front, respectively. By installing suction tube 2 and suction tube 1 at the bottom of absorption tube 1 and absorption tube 2, respectively, they are connected to the inner cavity of the collecting tube, and the negative pressure source connected to the collecting bottle absorbs the leachate entering the collecting tube. The device corresponds the three groups of collecting bottles distributed front and back to A1-A3 respectively, and the five groups of collecting bottles distributed left and right to B1-B5 respectively, so that the position of each group of collecting tubes is gridded. By observing whether there is leachate in different collecting bottles, the accurate two-dimensional coordinates of the collecting tube containing leachate are determined in the two dimensions of A and B, that is, the location of the leakage is determined.

[0014] 2. Then, an isolation plate is provided to divide the space at the bottom of the inner cavity of the collecting tube into two, so that the pipette one and the pipette two are connected to one group respectively. When the leachate in a certain group of collecting tubes accumulates, it is separated into two reasonable parts by the isolation plate. When the negative pressure source is started by the collecting bottle of group A, and half of the leachate isolated by the isolation plate in the collecting tube is absorbed by the absorption tube two and the pipette one, the remaining half of the leachate can be started by the collecting bottle of group B. The negative pressure source is absorbed by the absorption tube one and the pipette two, thereby avoiding the leachate being absorbed all at once and causing inaccurate positioning of the leakage point.

[0015] 3. Finally, the device evenly distributes the leachate after filtration from the filter screen by distributing the absorption tube 1 and the absorption tube 2 up and down and in a mutually perpendicular distribution manner, thereby ensuring that the leachate entering the collection tube can be evenly distributed to both sides of the isolation plate, and then, by utilizing the sleeve ring movably sleeved on the outer surface of the suction tube 1 and the suction tube 2, the bottom openings of the suction tube 1 and the suction tube 2 are automatically closed after the leachate in the collection tube is completely absorbed, and by providing a sealing ring, they automatically move up and down under the buoyancy of the leachate, and when the leachate is exhausted, the sealing ring is used to block the space between the suction tube 1, the suction tube 2 and the inner cavity of the collection tube, thereby reducing the load of the negative pressure source and making the absorption of the leachate more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a separation schematic diagram of the collecting cylinder of the present invention; Figure 2 It is a front cutaway schematic diagram of the overall structure of the present invention; Figure 3 For the present invention Figure 2 A magnified schematic diagram of the structure at center A; Figure 4 It is a side cutaway schematic diagram of the overall structure of the present invention; Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at B in the middle; Figure 6 It is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 7 It is a schematic diagram of the point distribution of the collecting tube, the first absorption tube, the second absorption tube, the recovery tube and the collecting bottle of the present invention; Figure 8 It is a schematic diagram of the internal section of the collecting tube of the present invention; Fig. 9 It is a top view schematic cross-sectional view of the collecting tube of the present invention.

[0017] In the figure: 1. Waterproof concrete layer; 2. Anti-seepage layer; 3. Garbage; 4. Collecting tube; 5. Absorption tube 1; 6. Absorption tube 2; 7. Recovery tube; 8. Collecting bottle; 9. Connecting tube 1; 10. Ventilation tube; 11. Transfer tube; 12. Connecting tube 2; 13. Isolation plate; 14. Filter net; 15. Suction tube 1; 16. Suction tube 2; 17. Ring; 18. Buoyancy ring; 19. Sealing ring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figures 1 to 8 As shown, an embodiment of the present invention provides a landfill leachate leakage monitoring device, including a waterproof concrete layer 1, an anti-seepage layer 2 and garbage 3, the waterproof concrete layer 1 is fixedly installed with multiple groups of collecting tubes 4, and also includes a collecting bottle 8 located on the right and front side of the collecting tube 4, the collecting tube 4 is buried underground, and the multiple groups of collecting tubes 4 are distributed in a matrix in the form of 5×3, and the inner wall of the collecting tube 4 is respectively fixedly plugged with absorption tubes 1 5 and absorption tubes 2 6 distributed up and down and perpendicular to each other, the axis of the absorption tube 2 6 is horizontally distributed, and the multiple groups of absorption tubes 2 6 distributed horizontally and equidistantly are fixedly connected to each other head to tail, The right end of the rightmost absorption tube 2 6 is connected to the collecting bottle 8, and multiple groups of absorption tubes 1 5 distributed equidistantly in the longitudinal direction are fixedly connected head to tail, and the front end of the absorption tube 1 5 located in the front is connected to another group of collecting bottles 8. The top of the collecting cylinder 4 is fixedly connected with a connecting tube 2 12, and the bottom end of the connecting tube 2 12 penetrates downward to the inner wall of the absorption tube 2 6 and is fixedly connected with a transfer tube 11. The right side of the top of the outer surface of the transfer tube 11 is fixedly connected with a vent pipe 10, the bottom of the outer surface of the absorption tube 2 6 is fixedly connected with a liquid suction tube 15, and the bottom of the outer surface of the absorption tube 1 5 is fixedly connected with a liquid suction tube 2 16; The present device has appropriately upgraded and optimized the monitoring means, and can quickly determine the location of the leakage point. By arranging multiple groups of collecting tubes 4 distributed in a 5×3 matrix to cover the bottom of the waterproof concrete layer 1, and inserting absorption tube 1 5 and absorption tube 2 6 perpendicular to each other on the outer surface of the collecting tube 4, they are respectively connected to the collecting bottle 8 on the right and the collecting bottle 8 on the front side. By installing suction tube 2 16 and suction tube 1 15 at the bottom of absorption tube 1 5 and absorption tube 2 6 respectively, they are connected to the inner cavity of the collecting tube 4, and the negative pressure source connected to the collecting bottle 8 absorbs the leachate entering the collecting tube 4. The present device corresponds the three groups of collecting bottles 8 distributed front and back to A1-A3 respectively, and the five groups of collecting bottles 8 distributed left and right to B1-B5 respectively, so that the position of each group of collecting tubes 4 is gridded. By observing whether there is leachate in different collecting bottles 8, the accurate two-dimensional coordinates of the collecting tube 4 containing leachate are determined in two dimensions of A and B, that is, the location of the leakage is determined.

[0020] Then, the space at the bottom of the inner cavity of the collecting tube 4 is divided into two by providing an isolation plate 13, so that the pipette one 15 and the pipette two 16 are connected to one group respectively. When the leachate in a group of collecting tubes 4 accumulates, it is separated into two reasonable parts by the isolation plate 13. When the collecting bottle 8 of group A starts the negative pressure source and absorbs half of the leachate in the collecting tube 4 isolated by the isolation plate 13 through the absorption tube two 6 and the pipette one 15, the remaining half of the leachate can start the negative pressure source through the collecting bottle 8 of group B, and absorb the remaining half of the leachate in the collecting tube 4 through the absorption tube one 5 and the pipette two 16, thereby avoiding the leachate being absorbed all at once and causing inaccurate positioning of the leakage point.

[0021] Finally, the device also evenly diverts the leachate filtered from the filter screen 14 by distributing the absorption tube 1 5 and the absorption tube 2 6 up and down and in a mutually perpendicular distribution manner, ensuring that the leachate entering the collection tube 4 can be evenly diverted to the two sides of the isolation plate 13, and then, by using the ring 17 movably sleeved on the outer surface of the suction tube 15 and the suction tube 2 16, the bottom openings of the suction tube 1 15 and the suction tube 2 16 are automatically closed after the leachate in the collection tube 4 is absorbed. By providing a sealing ring 19, it automatically moves up and down under the buoyancy of the leachate. When the leachate is exhausted, the sealing ring 19 blocks the space between the suction tube 1 15, the suction tube 2 16 and the inner cavity of the collection tube 4, thereby reducing the load of the negative pressure source and making the absorption of the leachate more efficient.

[0022] Among them, the garbage 3 is buried inside the impermeable layer 2, the waterproof concrete layer 1 is pre-cast underground, and a reserved hole connected to the collecting tube 4 is opened, and a filter screen 14 is fixedly installed on the top of the inner wall of the collecting tube 4. The right end of the rightmost absorption tube 2 6 and the front end of the absorption tube 1 5 directly in front are fixedly connected with a recovery tube 7, and the recovery tube 7 penetrates into the inner wall of the collecting bottle 8. The top of the collecting bottle 8 is fixedly connected with a connecting tube 1 9, and the outer end of the connecting tube 1 9 is used to connect a negative pressure source; The collecting tube 4 is used to receive the leachate. The device is designed with 15 collecting tubes 4 , which correspond to different points at the bottom of the waterproof concrete layer 1 where leakage may occur.

[0023] The absorber tubes 2 6 are arranged in three rows parallel to each other, and the three rows of absorber tubes 2 6 are marked A1, A2 and A3 from front to back, and the absorber tubes 1 5 are arranged in five columns parallel to each other, and the five columns of absorber tubes 1 5 are marked B1, B2, B3, B4 and B5 from left to right; like Figure 7 As shown, A and B two-dimensionalize and precisely determine the position of each group of collecting tubes 4 in both horizontal and vertical directions, so that the staff can determine the position of the collecting tube 4 where the leachate is accumulated according to the leachate in the collecting bottle 8, thereby quickly finding the leakage point.

[0024] The bottom of the inner wall of the collecting tube 4 is fixedly connected with an isolation plate 13, the outer surfaces of the pipette 1 15 and the pipette 2 16 are both movably sleeved with a collar 17, the outer surface of the collar 17 is fixedly sleeved with a buoyancy ring 18, and the bottom of the collar 17 is fixedly connected with a sealing ring 19; The isolation plate 13 is used to isolate the bottom of the inner cavity of the collecting tube 4 so as to divide the leachate entering the collecting tube 4 into two parts, which are absorbed by the suction pipe 1 15 and the suction pipe 2 16 respectively.

[0025] The isolation plate 13 is inclined at 45° and isolates the pipette 1 15 and the pipette 2 16 from each other. The inclination of the isolation plate 13 mainly takes into account the design that the absorption tube 1 5 and the absorption tube 2 6 cross each other and are perpendicular to each other. The suction tube 1 15 and the suction tube 2 16 installed at the bottom need to be isolated from each other by the isolation plate 13.

[0026] The ventilation pipe 10 passes through the outer surface of the absorption pipe 2 6 upwards and communicates with the outside world; When the collecting bottle 8 generates negative pressure on the inner cavity of the collecting tube 4 through the negative pressure source, absorption tube 1 5, absorption tube 2 6, suction tube 1 15 and suction tube 2 16, the transfer tube 11 and the ventilation tube 10 are connected through the connecting tube 2 12 and finally to the outside world, so as to achieve negative pressure balance and avoid the gaps in the garbage 3 being too small to provide air pressure balance.

[0027] The leachate received by each group of collecting tubes 4 is isolated by the isolation plate 13 and divided into two groups. One group of leachate is collected into the collecting bottle 8 located at the front side through the absorption tube 1 5, and the other group of leachate is collected into the collecting bottle 8 located at the right side through the absorption tube 2 6. The leachate in the collecting cylinder 4 needs to be absorbed into the collecting bottles 8 of group A and the collecting bottles 8 of group B respectively, so that the leakage point can be quickly located by the position of the collecting cylinder 4 corresponding to the collecting bottles 8 of group A and the collecting bottles 8 of group B.

[0028] The sealing ring 19 is made of a rubber block and abuts against the bottom of the inner wall of the collecting tube 4. The buoyancy ring 18 is made of a foam block, and the outer ring surface of the buoyancy ring 18 is tilted downward. The sealing ring 19 is used to abut against the bottom of the inner wall of the collecting tube 4 downward and form a seal. After the leachate in the collecting tube 4 is completely absorbed, the suction force gradually acts on the sealing ring 19, causing the sealing ring 19 to gradually deform under the force, and finally seal the bottom openings of the pipette 1 15 and the pipette 2 16, thereby preventing negative pressure from continuously acting on the empty collecting tube 4 and ensuring that the negative pressure is maximized.

[0029] Working principle: First, connect the connecting pipe 19 to a negative pressure source, such as a negative pressure fan. When the corresponding part on a certain group of collecting tubes 4 begins to leak, the leachate enters the collecting tube 4 through the top opening of the collecting tube 4 and is filtered through the filter screen 14. Then, the leachate still falls on the outer surfaces of the absorption tube 2 6 and the absorption tube 1 5. Finally, it enters the two groups of mutually isolated spaces at the bottom of the inner cavity of the collecting tube 4 through the isolation plate 13. At this time, as the leachate in the inner cavity of the collecting tube 4 increases, its liquid level rises, thereby generating buoyancy for the sealing ring 19 and pushing the sleeve ring 17 and the buoyancy ring 18 upward to move along the outer surfaces of the suction tube 1 15 and the suction tube 2 16. The inner cavity of the collecting tube 4 and the outside are connected by the connecting pipe 2 12, the transfer pipe 11 and the ventilation pipe 10 to provide air pressure balance. Then, negative pressure is applied to A1, A2 and A3 in sequence. When there is leachate in the corresponding collection tube 4, the isolation plate 13 divides the leachate accumulated in the collection tube 4 into two. The negative pressure sucks half of the leachate in the inner cavity of the collection tube 4 into the collection bottle 8 through the absorption tube 2 6 and the liquid suction tube 1 15. Similarly, the negative pressure is applied to B1-B5 in sequence. At this time, the absorption tube 1 5 sucks the other half of the leachate in the collection tube 4 into the front collection bottle 8 through the liquid suction tube 2 16 under the action of negative pressure. When the leachate in the collection tube 4 is completely absorbed, the sealing ring 19 that loses its buoyancy will drive the sleeve ring 17 and the buoyancy ring 18 to move downward to the lowest point under the action of gravity. At this time, the liquid suction tube 15 and the liquid suction tube 2 16 are sealed with the inner cavity of the collection tube 4 through the sealing ring 19. Finally, observe the leachate conditions of the collection bottles 8 in each group corresponding to A1-A3. For example, if there is leachate in the collection bottle 8 corresponding to A1, it can be determined that there is leachate in the row of collection tubes 4 corresponding to A1. Then observe the leachate conditions of the collection bottles 8 in each group corresponding to B1-B5. For example, if there is leachate in the collection bottles 8 corresponding to B1 and B3, it can be confirmed that the top of the collection tubes 4 corresponding to A1, B1 and A1, B3 is the leakage point.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A landfill leachate leakage monitoring device, comprising a waterproof concrete layer (1), an anti-seepage layer (2) and garbage (3), wherein the waterproof concrete layer (1) is fixedly mounted with a plurality of collection tubes (4), and further comprising a collection bottle (8) located on the right side and the front side of the collection tube (4), wherein the collection tube (4) is buried underground, and characterized in that: The plurality of groups of collecting tubes (4) are arranged in a matrix in the form of 5×3, and the inner walls of the collecting tubes (4) are respectively fixedly connected with absorption tubes 1 (5) and 2 (6) which are arranged vertically and perpendicular to each other, and the axis of the absorption tube 2 (6) is horizontally distributed, and the plurality of groups of absorption tubes 2 (6) which are horizontally equidistantly distributed are fixedly connected end to end, and the right end of the absorption tube 2 (6) located on the far right is connected to the collecting bottle (8), and the plurality of groups of absorption tubes 1 (5) which are longitudinally equidistantly distributed are fixedly connected end to end, and the absorption tube 2 (6) located at the far right is connected to the collecting bottle (8), and the plurality of groups of absorption tubes 1 (5) which are longitudinally equidistantly distributed are fixedly connected end to end, and the absorption tube 2 (6) located at the far front is connected to the collecting bottle (8). The front end of the collecting tube 1 (5) is connected to another group of collecting bottles (8); the top of the collecting cylinder (4) is fixedly connected to a connecting tube 2 (12); the bottom end of the connecting tube 2 (12) penetrates downward to the inner wall of the absorbing tube 2 (6) and is fixedly connected to a transfer tube (11); the right side of the top of the outer surface of the transfer tube (11) is fixedly connected to a vent pipe (10); the bottom of the outer surface of the absorbing tube 2 (6) is fixedly connected to a liquid suction tube 1 (15); and the bottom of the outer surface of the absorbing tube 1 (5) is fixedly connected to a liquid suction tube 2 (16).

2. A landfill leachate leakage monitoring device according to claim 1, characterized in that: The garbage (3) is buried inside the impermeable layer (2); the waterproof concrete layer (1) is cast underground in advance and is provided with a reserved hole connected to the collecting tube (4); a filter screen (14) is fixedly installed on the top of the inner wall of the collecting tube (4); the right end of the second absorption tube (6) on the far right and the front end of the first absorption tube (5) directly in front are both fixedly connected to a recovery tube (7); the recovery tube (7) penetrates into the inner wall of the collecting bottle (8); the top of the collecting bottle (8) is fixedly connected to a connecting tube (9); an outer end of the connecting tube (9) is used to connect to a negative pressure source.

3. A landfill leachate leakage monitoring device according to claim 2, characterized in that: The absorber tubes 2 (6) are arranged in three rows parallel to each other front to back, and the absorber tubes 1 (5) are arranged in five columns parallel to each other left to right.

4. A landfill leachate leakage monitoring device according to claim 3, characterized in that: An isolation plate (13) is fixedly connected to the bottom of the inner wall of the collecting tube (4); a collar (17) is movably sleeved on the outer surfaces of the first and second liquid suction tubes (15 and 16); a buoyancy ring (18) is fixedly sleeved on the outer surface of the collar (17); and a sealing ring (19) is fixedly connected to the bottom of the collar (17).

5. A landfill leachate leakage monitoring device according to claim 4, characterized in that: The isolation plate (13) is arranged at an angle of 45° and isolates the first pipette (15) and the second pipette (16) from each other.

6. A landfill leachate leakage monitoring device according to claim 5, characterized in that: The ventilation pipe (10) penetrates upward through the outer surface of the second absorption pipe (6) and is in communication with the outside.

7. A landfill leachate leakage monitoring device according to claim 6, characterized in that: The leachate received in each group of the collecting cylinders (4) is isolated by the isolation plate (13) and divided into two groups. The leachate in one group is collected into the collecting bottle (8) located at the front side through the absorption tube 1 (5), and the leachate in the other group is collected into the collecting bottle (8) located at the right side through the absorption tube 2 (6).

8. A landfill leachate leakage monitoring device according to claim 7, characterized in that: The sealing ring (19) is made of a rubber block and abuts against the bottom of the inner wall of the collecting barrel (4); the buoyancy ring (18) is made of a foam block, and the outer ring surface of the buoyancy ring (18) is arranged to be inclined downward.

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