Anti-seepage device for refuse landfill

Abstract

The utility model belongs to the technical field of refuse landfill anti-seepage, and relates to an anti-seepage device for a refuse landfill, which comprises a landfill main body, a first anti-seepage layer, an activated carbon air suction unit, a filtrate cover and a filtrate inclined plane, and the first anti-seepage layer, the activated carbon air suction unit, the filtrate cover and the filtrate inclined plane are arranged in the landfill main body. The activated carbon air suction unit and the first anti-permeation layer are sequentially arranged from inside to outside; the landfill main body comprises a protective wall, a placing groove and a liquid collecting groove, the placing groove is formed in the top of the protective wall, the liquid collecting groove is formed in the protective wall at the bottom of the placing groove, a first anti-permeation layer and an activated carbon air suction unit are installed in the protective wall, a filtrate inclined plane is installed in the placing groove, a filtrate cover is fixedly installed above the liquid collecting groove, and a stirring fan is arranged in the liquid collecting groove. Waste liquid is guided to flow towards the liquid collecting tank through the filtrate inclined plane, waste liquid collection is ensured, the filtrate cover effectively protects the liquid collecting tank, and the anti-seepage effect is effectively enhanced through cooperation of the anti-seepage layer in the landfill and the activated carbon air suction unit.

Description

Technical Field

[0001] The utility model relates to the technical field of landfill anti-seepage, in particular to an anti-seepage device for landfills. Background Art

[0002] With the acceleration of global urbanization, the amount of garbage generated is increasing year by year. Among the many garbage disposal methods, sanitary landfill is still widely used in garbage disposal around the world due to its low cost and easy operation. However, the leachate and gas generated during the operation of landfills are the two major sources of pollution, posing a potential threat to the surrounding environment and human health.

[0003] The existing landfills are relatively simple. In order to prevent liquid leakage in the landfill and pollute the surrounding environment, generally only an impermeable membrane layer is covered at the bottom, periphery and top of the landfill. When the above device is used for a long time, waste liquid will accumulate in the landfill body and emit odor. Once the impermeable membrane is punctured, the waste liquid will penetrate from the landfill body and then penetrate into the soil to pollute the groundwater. After the capping and covering of the impermeable membrane layer, the direct emission of gas produced by the garbage reaction may affect the surrounding environment and human health. Utility Model Content

[0004] In order to solve the waste liquid storage and accumulation technical problem existing in the prior art, the utility model provides an anti-seepage device for a landfill.

[0005] The technical solution of the utility model is realized by the following scheme: an anti-seepage device for a landfill, comprising a landfill body, a first anti-seepage layer, an activated carbon air suction unit, a filtrate cover and a filtrate slope, wherein the first anti-seepage layer, the activated carbon air suction unit, the filtrate cover and the filtrate slope are installed in the landfill body, and the activated carbon air suction unit and the first anti-seepage layer are arranged in sequence from the inside to the outside;

[0006] The main body of the landfill includes a protective wall, a placement trough and a liquid collecting trough. A placement trough is opened on the top of the protective wall, and a liquid collecting trough is opened on the protective wall at the bottom of the placement trough. A first anti-permeability layer and an activated carbon suction unit are installed in the protective wall, a filtrate slope is installed in the placement trough, the filtrate cover is fixedly installed above the liquid collecting trough, a stirring fan is provided in the liquid collecting trough, and the liquid collecting trough is connected to a sewage pump through a pipeline.

[0007] Through the above technical scheme, the waste liquid is guided to flow toward the liquid collecting tank through the filtrate slope, ensuring that the waste liquid can be effectively collected by the liquid collecting tank and discharged by the sewage pump to avoid the accumulation and infiltration of the waste liquid in the landfill, reducing the risk of environmental pollution. The first anti-permeability layer and the activated carbon suction unit cooperate to achieve double protection, greatly enhancing the anti-permeability effect and reducing the possibility of waste liquid infiltrating into the external environment. The activated carbon suction unit can not only absorb waste gas, but also absorb and filter waste liquid that may penetrate from the side wall. The filtrate cover not only protects the liquid collecting tank, but also can be used to further filter solid impurities in the waste liquid.

[0008] Preferably, the filtrate slope includes a protective slope, a gravel layer, a second anti-seepage layer and a foam filling layer, and the foam filling layer, the second anti-seepage layer, the gravel layer and the protective slope are stacked in sequence along the axis of the collecting trough, and the protective slope, the gravel layer and the second anti-seepage layer are funnel-shaped, the protective slope, the gravel layer, the second anti-seepage layer and the collecting trough are coaxially arranged, and the foam filling layer is located between the second anti-seepage layer and the placement trough.

[0009] Through the above technical scheme, the rough surface of the protective slope and the funnel-shaped design of each layer stacked together can reduce the impact of garbage and guide the liquid to the collection tank, significantly improving the filtration and anti-permeability performance of the system, ensuring that the waste liquid can be effectively collected and prevented from polluting the surrounding environment. The foam filling layer plays a buffering role, reducing the impact of liquid or garbage on the collection tank and extending the service life of the system.

[0010] Preferably, the activated carbon air intake unit comprises an activated carbon filler, a plurality of air inlet holes and air outlet holes, a plurality of the air inlet holes are connected to the air outlet holes through the activated carbon filler, and isolation membranes are provided on both sides of the activated carbon filler.

[0011] Preferably, a plurality of the air inlet arrays are provided on the side wall of the placement groove, the air inlet faces the bottom of the placement groove, and the air inlet is arranged at an angle.

[0012] Preferably, a mesh cloth is provided on the side wall of the placement groove.

[0013] Preferably, the filtrate cover is in a truncated cone shape.

[0014] Preferably, the stirring fan is connected to the liquid collecting tank via a rotating shaft.

[0015] Through the above technical solution, the air inlet is inclined toward the bottom of the placement tank, which can better guide the harmful gas in the waste liquid to flow upward and then be captured by the activated carbon suction unit, thereby improving the collection and treatment efficiency of the waste gas, and cooperating with the mesh cloth to effectively prevent garbage from entering and blocking the air inlet.

[0016] In summary, the utility model has the following beneficial effects:

[0017] 1. The utility model guides the waste liquid to flow toward the liquid collecting tank through the filtrate slope, ensuring that the waste liquid can be effectively collected by the liquid collecting tank and discharged by the sewage pump, avoiding the accumulation and infiltration of the waste liquid in the landfill and reducing the risk of environmental pollution. The first anti-seepage layer and the activated carbon suction unit cooperate to achieve double protection, greatly enhancing the anti-seepage effect and reducing the possibility of waste liquid infiltrating into the external environment. The activated carbon suction unit can not only absorb waste gas, but also absorb and filter waste liquid that may penetrate from the side wall. The filtrate cover not only protects the liquid collecting tank, but also can be used to further filter solid impurities in the waste liquid.

[0018] 2. The rough surface of the protective slope and the funnel-shaped design of each layer can reduce the impact of garbage and guide the liquid to the collection tank, significantly improving the filtration and anti-permeability performance of the system, ensuring that the waste liquid can be effectively collected and prevented from polluting the surrounding environment. The foam filling layer plays a buffering role, reducing the impact of liquid or garbage on the collection tank and extending the service life of the system.

[0019] 3. The air inlet is tilted toward the bottom of the placement tank, which can better guide the harmful gas in the waste liquid to flow upward and then be captured by the activated carbon suction unit, thereby improving the collection and treatment efficiency of waste gas. It also cooperates with the mesh cloth to effectively prevent garbage from entering and blocking the air inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0022] Figure 3 It is a schematic diagram of the filtrate slope of the utility model;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the stirring fan of the utility model.

[0024] Explanation of the reference numerals in the drawings: 1. landfill body; 11. protective wall; 12. liquid collecting tank; 2. first anti-permeability layer; 3. activated carbon suction unit; 31. activated carbon filler; 32. air inlet; 33. air outlet; 4. filtrate cover; 5. filtrate slope; 51. protective slope; 52. gravel layer; 53. second anti-permeability layer; 54. foam filling layer; 6. mesh cloth; 7. agitating fan; 8. sewage pump. DETAILED DESCRIPTION

[0025] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure. The present invention is further described in detail below in conjunction with the accompanying drawings.

[0027] An anti-seepage device for a landfill, such as Figure 1-Figure 4 As shown, it includes a landfill body 1, a first anti-permeability layer 2, an activated carbon air suction unit 3, a filtrate cover 4 and a filtrate slope 5. The first anti-permeability layer 2, the activated carbon air suction unit 3, the filtrate cover 4 and the filtrate slope 5 are installed in the landfill body 1, and the activated carbon air suction unit 3 and the first anti-permeability layer 2 are arranged in sequence from the inside to the outside; the landfill body 1 includes a protective wall 11, a placement tank and a liquid collecting tank 12. A placement tank is opened on the top of the protective wall 11, and a liquid collecting tank 12 is opened on the protective wall 11 at the bottom of the placement tank. The first anti-permeability layer 2 and the activated carbon air suction unit 3 are installed in the protective wall 11, and the filtrate slope 5 is installed in the placement tank. The filtrate cover 4 is fixedly installed above the liquid collecting tank 12, and the liquid collecting tank 12 is provided with a stirring fan 7. The filtrate slope 5 is inclined toward the filtrate cover 4 to guide the waste liquid to the filtrate cover 4. The filtrate slope 5 is tightly combined with the placement tank, and the first anti-permeability layer 2 is a cylindrical shape, the anti-permeability layer adopts a continuous film made of high-density polyethylene (HDPE) material, which has good anti-permeability and corrosion resistance, and is used to prevent the landfill leachate from penetrating into the ground. The activated carbon suction unit 3 is a double-opening cylinder, which can adsorb and remove harmful gases in the leachate to prevent it from diffusing into the atmosphere and polluting the environment. When the sewage pump 8 is pumping liquid, the stirring fan 7 is impacted by the waste liquid and rotates, wherein the stirring fan 7 is divided into an upper and lower layer, and the upper blades can be quickly rotated by force to increase the air flow in the liquid collecting tank 12, so that the waste liquid will move faster, thereby improving the treatment efficiency of the waste liquid, and the lower blades are impacted and rotated, and the lower blades sweep the inflowing waste liquid into the discharge port for discharge, and also effectively prevent solid precipitation in the waste liquid, thereby improving the treatment efficiency of the waste liquid and avoiding the accumulation of waste liquid in the liquid collecting tank 12.

[0028] The filtrate slope 5 includes a protective slope 51, a gravel layer 52, a second anti-permeability layer 53 and a foam filling layer 54. The foam filling layer 54, the second anti-permeability layer 53, the gravel layer 52 and the protective slope 51 are sequentially stacked along the axis of the liquid collecting tank 12. The protective slope 51, the gravel layer 52 and the second anti-permeability layer 53 are funnel-shaped. The funnel-shaped design can guide garbage and liquid to flow to the liquid collecting tank 12, which helps to improve the liquid collection efficiency. The protective slope 51, the gravel layer 52, the second anti-permeability layer 53 and the liquid collecting tank 12 are coaxially arranged, and the foam filling layer 54 is located between the second anti-permeability layer 53 and the placement tank The surface of the protective slope 51 is a rough surface. The rough surface provides greater friction, so that the garbage can disperse the impact force when it collides, reducing the damage caused by direct impact to the structure of the filtrate slope 5. The gravel layer 52 is located below the protective slope 51, which can further disperse and mitigate the impact force of the garbage. At the same time, it can also filter out larger solid particles and prevent the second anti-permeability layer 53 from being damaged by ancient particles. The second anti-permeability layer 53 ensures that the liquid can flow smoothly into the sump 12, greatly improving the filtration and anti-permeability performance of the system. The foam filling layer 54 acts as a buffer to further reduce the impact of liquid and garbage on the slope.

[0029] The activated carbon suction unit 3 includes an activated carbon filler 31, a plurality of air inlet holes 32 and an air outlet hole 33. The plurality of air inlet holes 32 are connected to the air outlet holes 33 through the activated carbon filler 31. Isolation membranes are provided on both sides of the activated carbon filler 31. An array of a plurality of air inlet holes 32 is opened on the side wall of the placement groove. The air inlet holes 32 face the bottom of the placement groove. The air inlet holes 32 are inclined. A mesh cloth 6 is provided on the side wall of the placement groove. The air inlet holes 32 are inclined downward to cooperate with the mesh cloth 6 to effectively prevent garbage from clogging and ensure the normal operation of the air inlet holes 32. Small holes are opened on the isolation membrane to facilitate the exhaust gas to enter the activated carbon for purification.

[0030] The sump 12 is connected to the sewage pump 8 through a pipeline, and the sewage pump 8 is externally connected to the sewage treatment tank. The stirring fan 7 is connected to the sump 12 through a rotating shaft. The waste liquid and sewage are directly pumped out by the sewage pump 8 and treated. The sewage pump 8 is preferably a WQ type submersible non-clogging sewage pump 8. An anti-seepage layer is also laid inside the sump 12 to avoid penetration during liquid extraction. The first anti-seepage layer 2 in the protective wall 11 plays a final protective role. The filtrate cover 4 is in a truncated cone shape, and the filtrate cover 4 has filter mesh plates on both sides, and its top is in a sealed state. It can not only prevent the sump 12 from being filled with garbage and protect the sump 12, but also further filter solid impurities in the waste liquid. The truncated cone is set to reduce the resistance of the fluid passing through and improve the filtration efficiency. Part of the first anti-seepage layer 2 is passed through the sewage pipe.

[0031] Working principle: After the garbage is dumped, the top is sealed, and the sewage pump 8 is started for subsequent sewage discharge to extract the waste liquid accumulated in the liquid collecting tank 12. The cooperation of the first anti-permeation layer 2, the second anti-permeation layer 53 and the anti-permeation layer in the liquid collecting tank 12 greatly reduces the penetration of the waste liquid;

[0032] After the cap is sealed, the garbage and waste generated enter through the air inlet 32 ​​and are purified by the activated carbon filler 31 before being discharged. The downwardly inclined air inlet 32 ​​cooperates with the mesh cloth 6 to effectively prevent garbage from entering and blocking the air inlet 32.

[0033] The above description is only a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes for application in other fields. However, any simple modification or equivalent change made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An anti-seepage device for a landfill, characterized in that: The invention comprises a landfill body (1), a first anti-permeability layer (2), an activated carbon air absorption unit (3), a filtrate cover (4) and a filtrate slope (5), wherein the first anti-permeability layer (2), the activated carbon air absorption unit (3), the filtrate cover (4) and the filtrate slope (5) are installed in the landfill body (1), and the activated carbon air absorption unit (3) and the first anti-permeability layer (2) are arranged in sequence from the inside to the outside; The landfill body (1) comprises a protective wall (11), a placement trough and a liquid collecting trough (12); the top of the protective wall (11) is provided with a placement trough; the protective wall (11) at the bottom of the placement trough is provided with a liquid collecting trough (12); a first anti-permeability layer (2) and an activated carbon air absorption unit (3) are installed in the protective wall (11); a filtrate slope (5) is installed in the placement trough; the filtrate cover (4) is fixedly installed above the liquid collecting trough (12); a stirring fan (7) is provided in the liquid collecting trough (12); and the liquid collecting trough (12) is connected to a sewage pump (8) via a pipeline.

2. The anti-seepage device for a landfill according to claim 1, characterized in that: The filtrate slope (5) comprises a protective slope (51), a crushed stone layer (52), a second anti-permeability layer (53) and a foam filling layer (54); the foam filling layer (54), the second anti-permeability layer (53), the crushed stone layer (52) and the protective slope (51) are sequentially stacked along the axis of the liquid collecting trough (12); the protective slope (51), the crushed stone layer (52) and the second anti-permeability layer (53) are funnel-shaped; the protective slope (51), the crushed stone layer (52), the second anti-permeability layer (53) and the liquid collecting trough (12) are coaxially arranged; and the foam filling layer (54) is located between the second anti-permeability layer (53) and the placement trough.

3. The anti-seepage device for a landfill according to claim 1, characterized in that: The activated carbon air intake unit (3) comprises an activated carbon filler (31), a plurality of air inlet holes (32) and an air outlet hole (33), wherein the plurality of air inlet holes (32) are connected to the air outlet holes (33) via the activated carbon filler (31), and isolation membranes are provided on both sides of the activated carbon filler (31).

4. The anti-seepage device for a landfill according to claim 3, characterized in that: An array of a plurality of air inlet holes (32) is provided on the side wall of the placement groove, the air inlet holes (32) face the bottom of the placement groove, and the air inlet holes (32) are arranged at an inclination.

5. The anti-seepage device for a landfill according to claim 1, characterized in that: A mesh cloth (6) is provided on the side wall of the placement groove.

6. The anti-seepage device for a landfill according to claim 1, characterized in that: The filtrate cover (4) is in the shape of a truncated cone.

7. The anti-seepage device for a landfill according to claim 1, characterized in that: The stirring fan (7) is connected to the liquid collecting tank (12) via a rotating shaft.

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