Sewage treatment tank protection structure built in pond

Abstract

The utility model relates to the technical field of buried sewage treatment stations, and discloses a sewage treatment tank protection structure built in a pond, which comprises a sewage treatment tank, a foundation and at least one fixing component, the foundation is used for being arranged at the bottom of the pond, the sewage treatment tank is mounted on the foundation, and the sewage treatment tank is fixed on the foundation through each fixing component; the foundation comprises a first base layer, a second base layer and a third base layer which are sequentially distributed from bottom to top. By designing the composite foundation comprising the first base layer, the second base layer and the third base layer, the overall strength and stability of the foundation can be remarkably improved. Meanwhile, due to the fact that the water level change of the pond may generate buoyancy influence on the sewage treatment tank, the composite foundation and the synergistic effect of the composite foundation and the fixing assembly can effectively resist the upward floating tendency of the sewage treatment tank.

Description

Technical Field

[0001] This utility model relates to the technical field of underground sewage treatment plants, and in particular to a protective structure for a sewage treatment tank built in a pond. Background Technology

[0002] With increasing environmental awareness and stringent water resource management requirements, integrated wastewater treatment plants, as crucial facilities for treating domestic sewage and industrial wastewater, have received widespread attention and development in their design and construction technologies. These plants typically employ efficient and compact design concepts, aiming to minimize land area while achieving effective wastewater purification and discharge. Fiberglass tanks, with their excellent corrosion resistance, lightweight yet high strength, and ease of molding, have become a commonly used container material in integrated wastewater treatment plants. Fiberglass tanks not only effectively resist the corrosive effects of chemicals in wastewater but also maintain good structural stability over long-term use, thus they are widely buried underground to reduce the need for surface space and facilitate maintenance and management.

[0003] However, with accelerated urbanization and increasingly scarce land resources, the site selection of wastewater treatment plants faces significant challenges. Particularly in some areas, due to the scarcity of available land, it is necessary to consider building wastewater treatment plants in unconventional locations, such as ponds and other aquatic areas. While this approach alleviates land use pressure to some extent, the soil layers in pond areas are often relatively soft. Soft soil layers can lead to uneven foundation settlement, and their high water content reduces the bearing capacity compared to solid soil. This can affect the structural integrity and treatment efficiency of the fiberglass tanks, and in severe cases, even cause tank rupture, leakage, and other safety and quality accidents. This not only affects the wastewater treatment effect but may also cause secondary pollution to the surrounding environment, posing a serious threat to the basic stability and long-term safe operation of integrated wastewater treatment plants. Utility Model Content

[0004] The purpose of this utility model is to provide a protective structure for sewage treatment tanks built in ponds, so as to solve the problem of insufficient bearing capacity of sewage treatment plant foundation caused by weak pond soil.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A protective structure for a sewage treatment tank built in a pond includes: a sewage treatment tank, a foundation, and at least one fixing component. The foundation is used to be set at the bottom of the pond, the sewage treatment tank is installed on the foundation, and the sewage treatment tank is fixed to the foundation by each of the fixing components. The foundation includes a first base layer, a second base layer, and a third base layer, which are distributed sequentially from bottom to top.

[0007] Based on the aforementioned technical means, this utility model, by designing a composite foundation comprising a first base layer, a second base layer, and a third base layer, can significantly improve the overall strength and stability of the foundation. Furthermore, considering that changes in pond water level may affect the buoyancy of the sewage treatment tank, the composite foundation and its synergistic effect with the fixing components can effectively resist the tendency of the sewage treatment tank to float.

[0008] Furthermore, it also includes landfill material, which is buried on the surface of the wastewater treatment tank, and the fixing assembly passes through the landfill material to fix the wastewater treatment tank to the foundation.

[0009] Based on the aforementioned technical methods, the landfill not only provides additional physical support for the wastewater treatment tank but also increases the effective pressure above the foundation through its weight and density. This helps compact weak soil layers, improves the overall stability of the foundation, and reduces foundation settlement, especially in environments with weak soil layers such as ponds, effectively reducing the risk of uneven foundation settlement. Simultaneously, the landfill acts as a protective barrier, resisting direct erosion of the wastewater treatment tank surface by pond water flow, reducing the risk of soil erosion and tank exposure caused by water flow. This is particularly crucial for maintaining the long-term stability of the tank and extending its service life in pond environments with significant water level fluctuations.

[0010] The fixing components pass through the landfill to firmly secure the sewage treatment tank to the foundation. This not only enhances the connection strength between the tank and the foundation, but also allows the landfill to play a role in buffering and dispersing stress to a certain extent. This helps reduce stress concentration in the sewage treatment tank caused by foundation settlement or water level changes, and improves the seismic resistance and deformation resistance of the entire structure.

[0011] Furthermore, the landfill includes a first backfill layer and a second backfill layer, the first backfill layer being laid on the third base layer and located at the bottom of the sewage treatment tank; the second backfill layer covering the surface of the sewage treatment tank.

[0012] Based on the aforementioned technical methods, the first backfill layer is laid on the third base layer and located at the bottom of the sewage treatment tank, serving as a transition and buffer. The first backfill layer not only fills the tiny gaps between the foundation and the sewage treatment tank, but also enhances the tight bond between them.

[0013] The second backfill layer covers the surface of the wastewater treatment tank, forming an effective protective layer that can effectively resist external environmental erosion, such as the scouring of pond water and thermal expansion and contraction due to temperature changes, protecting the wastewater treatment tank from physical damage. At the same time, the second backfill layer also serves as thermal insulation, helping to maintain the stability of the internal treatment environment of the wastewater treatment tank.

[0014] This invention, through layered backfill layer laying, allows for more precise control of the density and compaction of the landfill material, thereby optimizing stress distribution and reducing stress concentration in the tank caused by foundation settlement or water level changes. This design helps improve the stability and seismic performance of the entire structure, ensuring the safe operation of the wastewater treatment tank under extreme conditions.

[0015] Furthermore, the second backfill layer is symmetrically distributed along the height direction of the wastewater treatment tank.

[0016] Based on the above technical means, the symmetrical distribution of the second backfill layer can ensure that the load on the sewage treatment tank in the vertical direction is more uniform, which helps to reduce the deformation or damage to the tank caused by uneven stress, thereby enhancing the stability and durability of the entire structure.

[0017] Furthermore, each of the fixing components includes an anti-buoyancy back strap and two anchors. The two anchors are respectively anchored to the foundation through the first backfill layer and are located on opposite sides of the sewage treatment tank. The anti-buoyancy back strap is close to the surface of the sewage treatment tank, and both ends of the anti-buoyancy back strap pass through the second backfill layer and are connected to the two anchors to anchor the sewage treatment tank to the foundation.

[0018] Based on the above technical means, two anchors are respectively passed through the first backfill layer and anchored to the foundation. Combined with the tight fit and connection of the anti-buoyancy backing, a stable triangular support structure is formed, which greatly enhances the anti-buoyancy ability of the sewage treatment tank under the action of groundwater or rainwater, effectively prevents the tank from floating due to buoyancy, avoids the tank from slipping and deforming during the backfilling construction process, and ensures the stable operation of the sewage treatment facility.

[0019] Furthermore, each of the anchors includes a lifting ring and an anchoring end, the lifting ring being fixedly connected to the anchoring end; the anchoring end being fixed to the third base layer; and the lifting ring being connected to the anti-buoyancy backing strap.

[0020] Based on the aforementioned technical methods, the presence of the lifting ring provides a convenient attachment point for connecting the anti-buoyancy backing strap. Construction workers can easily connect the anti-buoyancy backing strap to the anchor using the lifting ring, eliminating the need for complex welding or bolting processes, thus greatly simplifying the installation steps and improving construction efficiency. The anchoring end is directly fixed to the third base layer, ensuring a firm connection between the anchor and the foundation. This allows the anchor to more effectively distribute the tensile force transmitted by the anti-buoyancy backing strap into the foundation, improving the overall anchoring effect and enhancing the anti-buoyancy capability of the sewage treatment tank.

[0021] Furthermore, it also includes a waterproof slope unit, the slope structure being located within the pond, and the waterproof slope unit covering the fill; the waterproof slope unit having a water-facing surface.

[0022] Based on the aforementioned technical methods, the waterproof slope unit acts as an additional waterproof barrier, effectively isolating the water in the pond from direct contact with the landfill and the underlying foundation soil, reducing the potential impact of water infiltration on the stability of the landfill and the bearing capacity of the foundation. Especially in areas with high groundwater levels or abundant rainfall, the waterproof slope unit can significantly reduce the risk of water erosion of wastewater treatment facility structures, extending the service life of the facilities.

[0023] Meanwhile, waterproof slope protection units enhance the slope's resistance to sliding and erosion, helping to maintain its stability and preventing slope collapse or landslides caused by soil erosion. This is crucial for protecting the safety of wastewater treatment tanks and surrounding facilities, reducing safety hazards caused by slope instability.

[0024] Furthermore, the waterproof slope unit includes impermeable clay, which covers the backfill to form the water-facing surface.

[0025] Based on the aforementioned technical methods, impermeable clay has extremely low permeability, effectively preventing water from seeping through soil pores, thereby ensuring that the landfill and the underlying foundation soil remain dry. In pond environments, impermeable clay can prevent water from seeping into the landfill, reducing soil softening and bearing capacity reduction caused by moisture.

[0026] Impermeable clay has high cohesion and internal friction angle, which helps improve the slope's resistance to sliding and erosion. By covering it with fill, impermeable clay can form a stable soil layer, reducing soil erosion and maintaining the slope's stable shape.

[0027] Furthermore, the waterproof slope unit also includes a waterproof cloth, which is laid on the water-facing surface, and the height of the waterproof cloth is greater than the height from the bottom of the pond to the water surface.

[0028] Based on the aforementioned technical methods, the waterproof fabric provides an even stronger waterproof barrier on top of impermeable clay, protecting the clay from water erosion and extending its service life. Simultaneously, the waterproof fabric can reduce soil softening and bearing capacity reduction caused by water infiltration, thus improving the overall durability of the slope.

[0029] Furthermore, the waterproof slope unit also includes grass planting, which is placed on the water-facing side where the waterproof fabric is not laid.

[0030] Based on the aforementioned technical methods, planting grass can increase the green vegetation cover of slopes and improve the ecological environment quality around sewage treatment facilities. The root system of grass can penetrate deep into the soil, increasing the cohesion and shear strength of the slope soil, reducing soil erosion, and thus improving the slope's resistance to landslides. Under the scouring action of rainwater, vegetation can slow down the water flow and reduce the loss of soil particles, helping to maintain the stability of the slope.

[0031] The beneficial effects achieved by this utility model are:

[0032] This invention, through the design of a composite foundation comprising a first base layer, a second base layer, and a third base layer, significantly improves the overall strength and stability of the foundation. Furthermore, considering that changes in pond water level may affect the buoyancy of the wastewater treatment tank, the composite foundation and its synergistic effect with the fixing components effectively resist the tendency of the wastewater treatment tank to float. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0034] Figure 2 This is a side view of the overall structure of this utility model;

[0035] Figure 3 This is a plan view of the present invention applied to a sewage treatment plant;

[0036] Figure 4 This is a schematic diagram of the installation structure of the sewage treatment tank and anti-buoyancy strap of this utility model;

[0037] Figure 5 This is a schematic diagram of the anchor structure of this utility model;

[0038] Among them, 1. Sewage treatment tank; 11. Base;

[0039] 2. Foundation; 21. First base course; 22. Second base course; 23. Third base course;

[0040] 3. Fixing components; 31. Anti-buoyancy strap; 32. Anchor; 321. Lifting ring; 322. Anchoring end;

[0041] 4. Pond;

[0042] 5. Landfill material; 51. First backfill layer; 52. Second backfill layer;

[0043] 6. Waterproof slope unit; 61. Impermeable clay; 62. Waterproof fabric; 63. Grass planting.

[0044] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The same or similar reference numerals correspond to the same or similar components. The terms describing positional relationships in the drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. Detailed Implementation

[0045] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific embodiments should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0047] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0048] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0049] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0050] The technical solution of this embodiment will be described in detail below with reference to the accompanying drawings.

[0051] like Figure 1 and Figure 2As shown, a protective structure for a sewage treatment tank built in a pond includes: a sewage treatment tank 1, a foundation 2, and at least one fixing component 3. The foundation 2 is used to install the tank in the pond 4 (e.g., ...). Figure 3 As shown, at the bottom, the sewage treatment tank 1 is installed on the foundation 2, and the sewage treatment tank 1 is fixed to the foundation 2 by various fixing components 3; the foundation 2 includes a first base layer 21, a second base layer 22 and a third base layer 23, which are distributed from bottom to top.

[0052] like Figure 3 As shown, the integrated sewage treatment plant built in the pond also includes conventional structures such as an equalization tank, a sewage tank, and an equipment room, which will not be described in detail in this embodiment.

[0053] This embodiment, by designing a composite foundation 2 comprising a first base layer 21, a second base layer 22, and a third base layer 23, can significantly improve the overall strength and stability of the foundation. Simultaneously, considering that changes in pond water level may affect the buoyancy of the sewage treatment tank 1, the composite foundation 2 and its synergistic effect with the fixing components 3 can effectively resist the tendency of the sewage treatment tank 1 to float.

[0054] In this embodiment, each base layer can be specifically selected and designed according to the specific soil conditions at the bottom of the pond. Preferably, the first base layer 21 can be replaced with a 500mm thick layer of gravel. Alternatively, high-strength crushed stone or a concrete layer can be used to directly enhance the bearing capacity of the foundation. Preferably, the second base layer 22 can be a 100mm thick C20 plain concrete cushion layer. Alternatively, geogrids or reinforcing materials can be laid to enhance the foundation's resistance to deformation. Preferably, the third base layer 23 is a 300mm thick reinforced concrete layer, specifically arranged with double-layer longitudinal and transverse grade III steel bars (HRB400) 16mm@200mm. Alternatively, the third base layer 23 can be made of materials with good permeability and strong solidification effect, such as a specially formulated soil stabilizer layer, to further consolidate the foundation and promote drainage. This layered design ensures the adaptability and bearing capacity of the foundation 2 under different soil conditions.

[0055] In this embodiment, the fixing component 3 not only serves to connect the sewage treatment tank 1 and the foundation 2, but may also be designed to be adjustable to cope with water level fluctuations and ensure the stability and safety of the tank at different water levels.

[0056] In this preferred embodiment, the sewage treatment tank 1 is made of resin composite material, and a base 11 is provided at every 1.8m to 2.0m interval at the bottom of the sewage treatment tank 1. The base 11 is at least partially buried in the first backfill layer 51 to achieve stable installation of the sewage treatment tank 1.

[0057] like Figure 1 and Figure 2As shown, it also includes landfill 5, which is buried on the surface of the sewage treatment tank 1, and fixing component 3 passes through the landfill 5 to fix the sewage treatment tank 1 to the foundation 2.

[0058] The landfill material 5 not only provides additional physical support for the wastewater treatment tank 1, but also increases the effective pressure above the foundation 2 through its weight and density. This helps to compact the weak soil layer, improve the overall stability of the foundation, and reduce foundation settlement, especially in environments with weak soil layers such as pond 4, where it effectively reduces the risk of uneven foundation settlement. Simultaneously, the landfill material 5 acts as a protective barrier, resisting the direct scouring of the wastewater treatment tank 1 by the pond water flow, reducing the risk of soil erosion and exposure of the tank 1 due to water flow. This is particularly crucial for maintaining the long-term stability of the tank and extending its service life, especially in the environment of pond 4 where water levels fluctuate significantly.

[0059] The fixing component 3 passes through the landfill 5 to firmly fix the sewage treatment tank 1 to the foundation 2. This not only enhances the connection strength between the tank and the foundation, but also allows the landfill 5 to play a role in buffering and dispersing stress to a certain extent. This helps to reduce stress concentration in the sewage treatment tank caused by foundation settlement or water level changes, and improves the seismic resistance and deformation resistance of the entire structure.

[0060] like Figure 1 and Figure 2 As shown, the landfill 5 includes a first backfill layer 51 and a second backfill layer 52. The first backfill layer 51 is laid on the third base layer 23 and is located at the bottom of the sewage treatment tank 1; the second backfill layer 52 covers the surface of the sewage treatment tank 1.

[0061] The first backfill layer 51 is laid on the third base layer 23 and located at the bottom of the sewage treatment tank 1, serving as a transition and buffer. The first backfill layer 51 not only fills the small gaps between the foundation 2 and the sewage treatment tank 1, enhancing the tight bond between them, but also, preferably, uses an 80mm thick layer of medium-coarse sand. The material properties of the first backfill layer 51 (such as compaction and permeability) further optimize the bearing capacity and drainage performance of the foundation 2, reducing the risk of foundation 2 settlement.

[0062] The second backfill layer 52 covers the surface of the sewage treatment tank 1, forming an effective protective layer that can effectively resist external environmental erosion, such as the scouring of pond water and thermal expansion and contraction due to temperature changes, protecting the sewage treatment tank 1 from physical damage. Simultaneously, the second backfill layer 52 also serves as thermal insulation, helping to maintain the stability of the internal treatment environment of the sewage treatment tank 1. Preferably, the second backfill layer 52 can be made of stone chips, with water flushing and compaction occurring simultaneously during backfilling, ensuring uniform stress distribution during the installation of the sewage treatment tank 1, thus achieving stable and fixed installation.

[0063] This embodiment, by laying backfill layers in layers, allows for more precise control over the density and compaction of the landfill material, thereby optimizing stress distribution and reducing stress concentration in the tank caused by foundation settlement or water level changes. This design helps improve the overall structural stability and seismic performance, ensuring the safe operation of the wastewater treatment tank under extreme conditions.

[0064] like Figure 1 and Figure 2 As shown, the second backfill layer 52 is symmetrically distributed along the height direction of the sewage treatment tank 1.

[0065] The symmetrical distribution of the second backfill layer 52 ensures that the load on the sewage treatment tank 1 is more uniform in the vertical direction, which helps to reduce the deformation or damage to the tank caused by uneven stress, thereby enhancing the stability and durability of the entire structure.

[0066] like Figure 1 and Figure 2 As shown, each fixing component 3 includes an anti-buoyancy back strap 31 and two anchors 32. The two anchors 32 pass through the first backfill layer 51 and are anchored to the foundation 2, and the two anchors 32 are located on opposite sides of the sewage treatment tank 1. The anti-buoyancy back strap 31 is close to the surface of the sewage treatment tank 1, and both ends of the anti-buoyancy back strap 31 pass through the second backfill layer 52 and are connected to the two anchors 32 to anchor the sewage treatment tank 1 to the foundation 2.

[0067] Two anchors 32 pass through the first backfill layer 51 and are anchored to the foundation 2. Combined with the tight fit and connection of the anti-buoyancy backing 31, a stable triangular support structure is formed, which greatly enhances the anti-buoyancy ability of the sewage treatment tank 1 under the action of groundwater or rainwater, effectively prevents the tank from floating due to buoyancy, and ensures the stable operation of the sewage treatment facility.

[0068] In this embodiment, the anti-buoyancy strap 31 is made of galvanized flat iron with a width of 40mm and a thickness of 4mm. Galvanized flat iron has high strength and rigidity, capable of withstanding significant tensile force, effectively resisting the buoyancy of groundwater or rainwater on the sewage treatment tank, ensuring the stability of the tank. Simultaneously, the surface of the galvanized flat iron is coated with a zinc layer, which protects the iron substrate in oxidizing environments, preventing corrosion. Therefore, the anti-buoyancy strap 31 made of galvanized flat iron has excellent corrosion resistance and can maintain its stable performance for a long time in humid and corrosive environments.

[0069] like Figure 5 As shown, each anchor 32 includes a lifting ring 321 and an anchoring end 322. The lifting ring 321 is fixedly connected to the anchoring end 322. The anchoring end 322 is fixed on the third base layer 23. The lifting ring 321 is connected to the anti-buoyancy backing strap 31.

[0070] The presence of the lifting ring 321 provides a convenient attachment point for connecting the anti-buoyancy strap 31. Construction workers can easily connect the anti-buoyancy strap 31 to the anchor 32 via the lifting ring 321. Preferably, the anti-buoyancy strap 31 passes through the lifting ring 321 and is folded to fit a certain length (e.g., 100mm), with simple welding at the fold. This eliminates the need for a complex connection process, greatly simplifying the installation steps and improving construction efficiency. The anchor end 322 is directly fixed to the third base layer 23, ensuring a firm connection between the anchor 32 and the foundation 2. This allows the anchor 32 to more effectively distribute the tension transmitted by the anti-buoyancy strap 31 into the foundation, improving the overall anchoring effect and enhancing the anti-buoyancy capability of the sewage treatment tank 1.

[0071] In this embodiment, the lifting ring 321 and the anchoring end 322 are made of integrally formed grade III steel bars (HRB400).

[0072] The 16mm anchorage steel reinforcement structure, using Grade III HRB400 steel bars, possesses high yield strength and tensile strength, enabling it to withstand significant tensile forces and ensuring that anchorage 32 is not prone to breakage or deformation during long-term use. Simultaneously, the one-piece molding design avoids potential weak points at the joints, further enhancing the overall structural strength and stability.

[0073] like Figure 5 As shown, the lifting ring 321 is n-shaped, as... Figure 2 As shown, the anchoring end 322 is L-shaped and bends towards the sewage treatment tank 1. The n-shaped lifting ring 321 provides a convenient attachment point, facilitating the connection of the anti-buoyancy strap 31 to the anchor 32. The L-shaped anchoring end 322 can be more effectively embedded in the foundation 2, increasing the contact area with the foundation 2 and thus improving the anchoring force. The bending of the anchoring end 322 towards the sewage treatment tank 1 can generate additional compressive force, enhancing the bond between the reinforcing steel and the concrete and preventing the reinforcing steel from being pulled out.

[0074] like Figure 1 As shown, it also includes a waterproof slope unit 6, the slope structure is located within the pond 4, and the waterproof slope unit 6 covers the landfill 5; the waterproof slope unit 6 has a water-facing surface.

[0075] The waterproof slope unit 6 acts as an additional waterproof barrier, effectively isolating the water in the pond 4 from direct contact with the landfill 5 and the underlying foundation soil, reducing the potential impact of water infiltration on the stability of the landfill and the bearing capacity of the foundation. Especially in areas with high groundwater levels or abundant rainfall, the waterproof slope unit 6 can significantly reduce the risk of water erosion of the sewage treatment facility structure and extend the service life of the facility.

[0076] Meanwhile, the waterproof slope unit 6 enhances the slope's resistance to sliding and erosion, helping to maintain its stable shape and preventing slope collapse or landslides caused by soil erosion. This is crucial for protecting the safety of the sewage treatment tank 1 and its surrounding facilities, reducing safety hazards caused by slope instability.

[0077] like Figure 1 As shown, the waterproof slope unit 6 includes impermeable clay 61, which covers the fill 5 to form a water-facing surface.

[0078] Impermeable clay 61 has extremely low permeability, effectively preventing water from seeping through soil pores, thus ensuring that the landfill 5 and the underlying foundation soil remain dry. In the pond 4 environment, impermeable clay 61 can prevent water from seeping into the landfill 5, reducing soil softening and bearing capacity reduction caused by moisture.

[0079] Impermeable clay 61 has high cohesion and internal friction angle, which helps to improve the slope's resistance to sliding and erosion. By covering the fill 5, impermeable clay 61 can form a stable soil layer, reduce soil erosion, and maintain the slope's stable shape.

[0080] In this embodiment, the slope ratio is preferably 1:1.5, meaning that for every unit of vertical elevation gain, the horizontal width increases by 1.5 units. This design reduces the slope's inclination angle, thereby lowering the risk of slope slippage due to gravity. The gentler slope helps disperse the pressure of soil and water, reducing slope instability caused by water erosion or soil saturation.

[0081] like Figure 1 As shown, the waterproof slope unit 6 also includes a waterproof cloth 62, which is laid on the water-facing surface, and the height of the waterproof cloth 62 is greater than the height from the bottom of the pond 4 to the water surface.

[0082] The waterproof fabric 62 provides an even greater waterproof barrier on top of the impermeable clay 61, protecting the impermeable clay 61 from water erosion and extending its service life. At the same time, the waterproof fabric 62 also reduces soil softening and bearing capacity reduction caused by water infiltration, improving the overall durability of the slope.

[0083] like Figure 1 As shown, the waterproof slope unit 6 also includes grass planting 63, which is placed on the water-facing side where the waterproof cloth 62 is not laid.

[0084] Grass 63 can increase the green vegetation cover of slopes and improve the ecological environment quality around sewage treatment facilities. The root system of Grass 63 can penetrate deep into the soil, increasing the cohesion and shear strength of the slope soil, reducing soil erosion, and thus improving the slope's resistance to landslides. Under the scouring action of rainwater, the vegetation can slow down the water flow and reduce the loss of soil particles, helping to maintain the stability of the slope.

[0085] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A sewage treatment tank protection structure built in a pond, characterized by, The sewage treatment tank (1), the foundation (2) and at least one fixing assembly (3), the foundation (2) is used to be arranged at the bottom of the pond (4), the sewage treatment tank (1) is installed on the foundation (2), and the sewage treatment tank (1) is fixed on the foundation (2) by each fixing assembly (3); The foundation (2) comprises a first base layer (21), a second base layer (22) and a third base layer (23), the first base layer (21), the second base layer (22) and the third base layer (23) are sequentially distributed from bottom to top; Further comprising landfill (5), the landfill (5) is filled in the surface of the sewage treatment tank (1), and the fixing assembly (3) passes through the landfill (5) and fixes the sewage treatment tank (1) on the foundation (2); The landfill (5) comprises a first backfill layer (51) and a second backfill layer (52), the first backfill layer (51) is laid on the third base layer (23), and is located at the bottom of the sewage treatment tank (1); the second backfill layer (52) covers the surface of the sewage treatment tank (1); Each fixing assembly (3) comprises an anti-floating harness (31) and two anchorages (32), two anchorages (32) are anchored on the foundation (2) through the first backfill layer (51), and two anchorages (32) are located on opposite sides of the sewage treatment tank (1); the anti-floating harness (31) is closely attached to the surface of the sewage treatment tank (1), and the two ends of the anti-floating harness (31) are connected with two anchorages (32) through the second backfill layer (52), so that the sewage treatment tank (1) is anchored on the foundation (2). The second backfill layer (52) is symmetrically distributed along the height direction of the sewage treatment tank (1).

2. A pond-based wastewater treatment tank protection structure according to claim 1, wherein Each anchorage (32) comprises a lifting ring (321) and an anchoring end (322), the lifting ring (321) is fixedly connected with the anchoring end (322); the anchoring end (322) is fixed on the third base layer (23); the lifting ring (321) is connected with the anti-floating harness (31).

3. A pond-based wastewater treatment tank protection structure according to claim 1, wherein Further comprising a waterproof slope unit (6), the slope structure is located in the pond (4), and the waterproof slope unit (6) covers the landfill (5); the waterproof slope unit (6) has a water-facing surface.

4. The pond-based wastewater treatment tank protection structure according to claim 1, characterized in that, The waterproof slope unit (6) comprises impermeable clay (61), which covers the landfill (5) to form the water-facing surface.

5. A pond-based wastewater treatment tank protection structure according to claim 4, wherein The waterproof slope unit (6) further comprises a waterproof cloth (62), which is laid on the water-facing surface, and the waterproof cloth (62) is laid to a height greater than the height from the bottom of the pond (4) to the water surface.

6. A pond-based wastewater treatment tank protection structure according to claim 5, wherein The waterproof slope unit (6) further comprises grass (63), which is arranged at the position of the water-facing surface not laid with the waterproof cloth (62).

7. A pond-based wastewater treatment tank protection structure according to claim 6, wherein ​

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