Landfill leachate collecting tank for measuring liquid level

Abstract

The utility model provides a landfill leachate collecting tank for measuring liquid level, which relates to the technical field of garbage treatment devices, and is characterized in that one side of a tank body is communicated with a diversion trench, the diversion trench is in a rectangular opening shape, and the top surface of the diversion trench and the top surface of the tank body are positioned on the same horizontal plane; a measuring hole is formed in the top surface of the tank body, a guide rod liquid level meter is vertically inserted into the measuring hole, a maintenance well is built around the measuring hole, and reinforcing bricks are built at the bottom end of the maintenance well and the top surface of the tank body; a liquid discharging assembly is further arranged in the tank body and used for discharging percolate, the technical problems that in the prior art, the percolate overflows into the collecting tank from the measuring opening, measurement signals are affected, and a liquid level meter is damaged are solved, and the technical effects that liquid level information is accurately obtained through the guide rod type liquid level meter, and the service life is prolonged through a maintenance well are achieved.

Description

Technical Field

[0001] This utility model relates to the field of waste treatment equipment technology, and in particular to a waste leachate collection tank for measuring liquid level. Background Technology

[0002] With the increase in the production of municipal solid waste, landfill leachate is a high-concentration organic wastewater generated during the dumping and landfilling process through the infiltration of precipitation, surface water, and groundwater, as well as the decomposition of the waste itself. Its composition includes not only large amounts of organic matter, ammonia nitrogen, heavy metal ions, and other pollutants, but it also easily produces foam, and the concentration and morphology of the foam continuously change during treatment. Landfill leachate collection ponds are used to temporarily store leachate, and during storage, the leachate levels need to be measured to prevent overflow.

[0003] In existing technologies, landfill leachate diversion channels are directly connected to collection tanks, and holes need to be opened above the collection tanks to measure the leachate level using radar level gauges or cable-guided level gauges.

[0004] However, in actual operation, when landfill leachate flows into the collection tank through the diversion channel, it often carries fine debris and sludge, which accumulate in the channel and cause blockage. When the channel is blocked, the leachate cannot flow normally into the collection tank and instead overflows into the collection tank through the level gauge's measuring port. This not only interferes with the level gauge's measurement signal, making the data inaccurate, but also, because landfill leachate is corrosive, the leachate overflowing from the measuring port may damage the level gauge and shorten its service life. Utility Model Content

[0005] The purpose of this invention is to provide a landfill leachate collection tank for measuring liquid level, so as to alleviate the technical problem in the prior art where leachate overflows into the collection tank from the measuring port, affecting the measurement signal and damaging the level gauge.

[0006] This utility model provides a landfill leachate collection tank for measuring liquid level, comprising: a tank body, a guide channel, a measuring hole, a guide rod level gauge, a maintenance well, and a drainage assembly;

[0007] A flow channel is connected to one side of the pool. The flow channel has a rectangular opening, and the top surface of the flow channel is at the same level as the top surface of the pool.

[0008] A measuring hole is provided on the top surface of the pool, and a guide rod level gauge is vertically inserted into the measuring hole. A maintenance well is built around the measuring hole, and the bottom of the maintenance well and the top surface of the pool are reinforced with bricks.

[0009] The pool is also equipped with a drainage system for draining leachate.

[0010] Furthermore, the maintenance well is a cylindrical shape with an open top, with an inner diameter of 750mm to 850mm and a height of 900mm to 1000m.

[0011] Furthermore, the guide rod level gauge includes a radar transmitter box, a flange, and a propagation guide rod arranged sequentially from top to bottom;

[0012] The flange is fixed to the outer periphery of the measuring hole by bolts, and the guide rod is spaced 50mm to 100mm from the bottom of the pool.

[0013] Furthermore, a waterproof gasket is installed between the flange and the outer periphery of the measuring hole.

[0014] Furthermore, a first grate is provided at the input end of the diversion channel connecting to the garbage pool, and a second grate is provided at the end of the diversion channel connecting to the pool body; the mesh count of the second grate is smaller than that of the first grate.

[0015] Furthermore, the outer wall of the maintenance well is provided with an anti-corrosion coating, which is an epoxy resin coating with a thickness of 0.8mm to 1.2mm.

[0016] Furthermore, the drainage assembly includes a submersible pump, a drainage pipe, and a drainage port;

[0017] The submersible pump is fixed to the support at the bottom of the pool with bolts. The outlet of the submersible pump is connected to the drain pipe, which passes through the drain port on the surface of the pool.

[0018] Beneficial effects:

[0019] This utility model provides a landfill leachate collection tank for measuring liquid level, including a guide channel connected to one side of the tank body. The guide channel has a rectangular opening, and the top surface of the guide channel is at the same level as the top surface of the tank body. A measuring hole is opened on the top surface of the tank body, and a guide rod liquid level gauge is vertically inserted into the measuring hole. A maintenance well is built around the measuring hole, and the bottom end of the maintenance well and the top surface of the tank body are reinforced with bricks. A drainage component is also provided in the tank body for draining leachate.

[0020] By replacing traditional radar or cable-type level gauges with guide rod level gauges inserted into the measuring hole, the interference of foam or the operation of the discharge pump can be avoided, which can cause the guide cable to stick to the wall and send false signals, thus increasing the accuracy of the measurement. Building a maintenance well around the measuring hole and installing reinforcing bricks can not only block leachate from flowing into the measuring hole and interfering with the measurement signal, but also protect the level gauge from leachate flooding and corrosion, enhance structural stability, and ensure accurate level measurement and long-term stable operation of the device. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the structure of a landfill leachate collection tank for measuring liquid level provided in an embodiment of this utility model;

[0023] Figure 2 A plan view of a landfill leachate collection tank for measuring liquid level, provided for an embodiment of this utility model;

[0024] Figure 3 A schematic diagram of the guide rod level gauge in a landfill leachate collection tank for measuring liquid level, provided as an embodiment of this utility model.

[0025] Icons: 1 - Pool body; 2 - Flow channel; 201 - First grate plate; 202 - Second grate plate; 3 - Measuring hole; 4 - Guide rod level gauge; 401 - Radar transmitter box; 402 - Flange; 403 - Propagation guide rod; 5 - Maintenance well; 501 - Reinforcing brick; 6 - Drainage assembly; 601 - Submersible pump; 602 - Drainage pipe; 603 - Drainage port. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0033] This utility model provides a landfill leachate collection tank for measuring liquid level, including: tank body 1, guide channel 2, measuring hole 3, guide rod liquid level gauge 4, maintenance well 5, and drainage assembly 6;

[0034] A guide channel 2 is connected to one side of the pool body 1. The guide channel 2 has a rectangular opening, and the top surface of the guide channel 2 is at the same level as the top surface of the pool body 1.

[0035] A measuring hole 3 is provided on the top surface of the pool body 1. A guide rod level gauge 4 is vertically inserted into the measuring hole 3. A maintenance well 5 is built around the measuring hole 3. The bottom end of the maintenance well 5 and the top surface of the pool body 1 are reinforced with bricks 501.

[0036] The pool body 1 is also equipped with a drainage component 6 for draining leachate.

[0037] Maintenance well 5 is a cylindrical shape with an open top. The inner diameter of maintenance well 5 is 750mm to 850mm, and the height of maintenance well 5 is 900mm to 1000m.

[0038] Specifically, such as Figure 1 , Figure 2 As shown, pool 1 is a closed rectangular container for collecting leachate from municipal solid waste, buried underground. One side of pool 1 has a through-hole connecting to a drainage channel 2. The drainage channel 2 is rectangular with an open top, and its top surface is level with the top surface of pool 1, forming an open channel for leachate inflow. The flush design of the drainage channel 2 with the top surface of pool 1 ensures smooth leachate flow. However, because the leachate carries fine debris and sludge, the drainage channel 2 is prone to blockage, and leachate easily flows from the top of the drainage channel 2 to the bottom of pool 1, and then flows in through the measuring hole 3.

[0039] A measuring hole 3 is provided on the top surface of the pool body 1, and a guide rod level gauge 4 is vertically inserted into the hole. The guide rod of the guide rod level gauge 4 extends vertically along the axis of the measuring hole 3 to the liquid surface inside the pool body 1. The guide rod level gauge 4 utilizes the characteristics of radar waves being emitted and echoed along a rigid guide rod. Compared with traditional non-contact radar level gauges, it avoids the interference of foam reflection and scattering of radar waves, and directly acts on the real liquid surface to obtain real liquid level information. Compared with cable-type radar level gauges, the guide rod level gauge 4 remains vertically stable when leachate flows, and will not cause the problem of false full-level signals due to the cable sticking to the wall when leachate is discharged, thus ensuring the accuracy and stability of the liquid level measurement data.

[0040] A maintenance well 5 is constructed around the measuring hole 3. The maintenance well 5 is a cylindrical structure with an open top, and its top surface is flush with the ground. Its inner diameter is 750mm–850mm, and its height is 900mm–1000mm. Preferably, the inner diameter is 800mm and the height is 1000mm. The specific dimensions can be adjusted according to the depth of the pool 1. The bottom of the maintenance well 5 is fixed to the top surface of the pool 1 by constructing a triangular structure with reinforcing bricks 501 to ensure the stability of the well structure. The well wall of the maintenance well 5 is constructed of waterproof concrete or anti-corrosion bricks.

[0041] When leachate overflows from the drainage channel 2 due to blockage by debris, the cylindrical structure of the maintenance well 5 prevents the overflowing liquid from flowing directly into the measuring hole 3, thus avoiding interference with the signal acquisition of the guide rod level gauge 4 and ensuring a dry and stable environment around the measuring hole. Furthermore, the height of the maintenance well 5 protects the guide rod level gauge 4 itself, preventing it from being submerged by abnormally rising leachate levels in the pool 1, reducing the soaking and corrosion of the guide rod level gauge 4 by leachate, and extending the equipment's service life. In addition, the opening at the top of the maintenance well 5 provides maintenance space, allowing for inspection and maintenance of the level gauge only within the well opening area, significantly reducing personnel safety risks and the frequency of entering the leachate channel for equipment maintenance.

[0042] A drainage assembly 6 is installed inside pool 1 to connect to the subsequent treatment system.

[0043] In an embodiment of this utility model, the guide rod level gauge 4 includes a radar transmitter box 401, a flange 402, and a propagation guide rod 403 arranged sequentially from top to bottom;

[0044] Flange 402 is fixed to the outer periphery of measuring hole 3 by bolts, and the transmission guide rod 403 is spaced 50mm to 100mm from the bottom of pool body 1.

[0045] A waterproof gasket is also provided between flange 402 and the outer periphery of measuring hole 3.

[0046] Specifically, such as Figure 3 As shown, the radar transmitter box 401 integrates electronic circuitry, which can control the transmission frequency and power of the radar waves. During operation, the radar transmitter box 401 emits radar waves towards the downward propagation guide rod 403. The radar waves travel downwards along the propagation guide rod 403 until they reach the liquid surface, avoiding the complex and ever-changing foam interference on the surface of the landfill leachate, and directly acting on the actual liquid surface to accurately obtain liquid level information.

[0047] Flange 402 is connected to the lower part of radar transmitter box 401 and is fixed to the outer periphery of the measuring hole by bolts. A waterproof gasket is also installed between flange 402 and the outer periphery of measuring hole 3 to prevent leachate from seeping out from the connection between measuring hole 3 and flange 402, thus preventing corrosion and damage to the electronic components inside radar transmitter box 401.

[0048] The propagation guide rod 403 is located at the bottom of the guide rod level gauge 4. The length of the propagation guide rod 403 can be adjusted according to the depth of the pool 1. It is spaced 50mm to 100mm from the bottom of the pool 1 to avoid the propagation guide rod 403 directly contacting the silt and debris at the bottom of the pool 1. Debris adhering to the propagation guide rod 403 will affect the propagation and reflection of radar waves. This ensures that the radar waves have enough space to propagate to the liquid surface and return, thereby accurately measuring the liquid level.

[0049] It should be noted that the guide rod level gauge 4 can also be a rod level gauge with a float ball, so as to measure the height of leachate in the pool 1.

[0050] In an embodiment of this utility model, a first grate plate 201 is provided at the input end of the guide channel 2 that connects to the garbage pool, and a second grate plate 202 is provided at the end of the guide channel 2 that connects to the pool body 1; the mesh count of the second grate plate 202 is smaller than that of the first grate plate 201.

[0051] The outer wall of maintenance well 5 is provided with an anti-corrosion coating, which is an epoxy resin coating with a thickness of 0.8mm to 1.2mm.

[0052] The drainage assembly 6 includes a submersible pump 601, a drainage pipe 602, and a drainage port 603;

[0053] The submersible pump 601 is fixed to the bottom bracket of the pool body 1 by bolts. The outlet of the submersible pump 601 is connected to the drain pipe 602, and the drain pipe 602 passes through the drain port 603 opened on the surface of the pool body 1.

[0054] Specifically, a first grate 201 is installed at the input end of the drainage ditch 2, which connects to the garbage pit, to filter impurities in the leachate flowing into the drainage ditch 2 from the garbage pit. The first grate 201 is made of metal and has large pores, which can prevent large pieces of garbage, such as large pieces of garbage and branches, from entering the drainage ditch 2. A second grate 202 is installed at the end of the drainage ditch 2 that connects to the pool body 1. The mesh size of the second grate 202 is smaller than that of the first grate 201, that is, the pores are smaller. The second grate 202 further filters the leachate and intercepts fine garbage and sludge particles, preventing these impurities from entering the pool body 1.

[0055] The outer wall of maintenance well 5 is coated with an anti-corrosion coating. Epoxy resin, with its chemical stability and corrosion resistance, is applied to the outer wall of maintenance well 5. This is because landfill leachate is corrosive, and the coating prevents corrosion of the well wall concrete or other materials, thus extending the service life of maintenance well 5.

[0056] In the drainage assembly 6, there are generally two submersible pumps 601, which are fixed to the bracket at the bottom of the pool body 1 by bolts. The outlet of the submersible pump 601 is connected to the drainage pipe 602. The drainage pipe 602 passes through the drainage port 603 opened on the surface of the pool body 1. A rubber sealing ring is provided between the drainage port 603 and the drainage pipe 602.

[0057] Based on the above embodiments, the specific working process of the landfill leachate collection tank for measuring liquid level provided by this utility model is as follows:

[0058] The leachate flows into the diversion channel 2 through the landfill pit. The first grate 201 blocks large pieces of waste, while the second grate 202, connected to the pit body 1, intercepts fine waste and silt particles, preventing these impurities from entering the pit body 1. After two stages of filtration, the leachate enters the pit body 1 through the diversion channel 2.

[0059] Radar transmitter 401 emits radar waves, which are transmitted to the liquid surface along the propagation guide rod 403. A maintenance well 5 surrounds the measuring hole 3. When the drainage channel 2 becomes blocked, causing leachate to overflow, the maintenance well 5 prevents the overflowing liquid from flowing into the measuring hole 3, thus preventing interference with the signal acquisition of the guide rod level gauge 4. Simultaneously, the maintenance well 5 prevents leachate in the pool 1 from submerging the level gauge, reducing the risk of corrosion and immersion damage, and extending the service life of the level gauge. Furthermore, the maintenance well 5 has an opening at its top, facilitating personnel inspection and maintenance of the level gauge from the wellhead.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A leachate collection cell for measuring the level of a liquid, characterized in that include: Pool body (1), diversion channel (2), measuring hole (3), guide rod level gauge (4), maintenance well (5) and drainage assembly (6); The pool body (1) is connected to the guide channel (2) on one side. The guide channel (2) is rectangular and the top surface of the guide channel (2) is at the same level as the top surface of the pool body (1). The top surface of the pool body (1) is provided with the measuring hole (3), the guide rod level gauge (4) is vertically inserted into the measuring hole (3), the maintenance well (5) is built around the measuring hole (3), and the bottom end of the maintenance well (5) and the top surface of the pool body (1) are built with reinforcing bricks (501). The pool body (1) is also equipped with the drainage component (6) for draining leachate.

2. The landfill leachate collection tank for measuring liquid level according to claim 1, characterized in that, The maintenance well (5) is a cylindrical shape with an open top. The inner diameter of the maintenance well (5) is 750mm to 850mm, and the height of the maintenance well (5) is 900mm to 1000m.

3. The landfill leachate collection tank for measuring liquid level according to claim 1, characterized in that, The guide rod level gauge (4) includes a radar transmitter box (401), a flange (402), and a propagation guide rod (403) arranged sequentially from top to bottom; The flange (402) is fixed to the outer periphery of the measuring hole (3) by bolts, and the transmission guide rod (403) is spaced 50mm to 100mm from the bottom of the pool body (1).

4. The landfill leachate collection tank for measuring liquid level according to claim 3, characterized in that, A waterproof gasket is also provided between the flange (402) and the outer periphery of the measuring hole (3).

5. The landfill leachate collection tank for measuring liquid level according to claim 1, characterized in that, The guide channel (2) is provided with a first grate plate (201) at the input end of the garbage pool, and a second grate plate (202) is provided at the end of the guide channel (2) that is connected to the pool body (1); the mesh count of the second grate plate (202) is smaller than that of the first grate plate (201).

6. The landfill leachate collection tank for measuring liquid level according to claim 1, characterized in that, The outer wall of the maintenance well (5) is provided with an anti-corrosion coating, which is an epoxy resin coating with a thickness of 0.8 mm to 1.2 mm.

7. The landfill leachate collection tank for measuring liquid level according to claim 1, characterized in that, The drainage assembly (6) includes a submersible pump (601), a drainage pipe (602), and a drainage port (603); The submersible pump (601) is fixed to the bottom bracket of the pool body (1) by bolts. The outlet of the submersible pump (601) is connected to the drain pipe (602). The drain pipe (602) passes through the drain port (603) opened on the surface of the pool body (1).

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