A sewage treatment tank

Abstract

The utility model discloses a sewage treatment tank, include: pool body subassembly, support subassembly and composite protection subassembly, the pool body subassembly is the gradually changing formula double -layer wall structure, the pool body subassembly includes inner layer spare and outer layer spare, the inner layer spare is the anticorrosion macromolecular composite spare, the outer layer spare is the sectional type carbon steel spare, and each section between outer layer spare is connected through the mortise and tenon formula interface spare movably, the pool body subassembly inside is equipped with the baffle piece, the baffle piece is the hollow sandwich glass steel structural spare, the top of pool body subassembly is equipped with the maintenance cover plate spare, the maintenance cover plate spare with the top edge of pool body subassembly swing joint, the lateral wall of pool body subassembly is equipped with water inlet piece and outlet piece respectively, the inlet end of water inlet piece is equipped with the filter screen spare. The utility model discloses through double -layer wall, filter screen, support and protection subassembly, give consideration to anticorrosion stable and pretreatment, prevent the crack and prevent the leakage, solve the traditional pool body problem.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a wastewater treatment tank. Background Technology

[0002] Wastewater treatment ponds are core equipment for treating wastewater in municipal engineering, industrial production, and environmental protection. They are widely used in scenarios such as domestic sewage purification, industrial wastewater pretreatment, and reclaimed water reuse. Their operational stability, durability, and ease of maintenance directly affect wastewater treatment efficiency and long-term operating costs. They are one of the key infrastructures in water treatment systems to ensure that wastewater meets treatment standards and avoids secondary pollution.

[0003] In existing technologies, sewage treatment tanks are mostly constructed using a single material. If corrosion resistance is a priority, polymer materials are often chosen, but these are prone to deformation due to insufficient structural strength. If structural stability is a priority, metal materials are often used, but these are also susceptible to sewage corrosion, affecting their service life. Furthermore, the connections between various components of the tank often rely on welding or bolting, making disassembly and assembly cumbersome and increasing the difficulty of installation and subsequent maintenance. At the same time, traditional sewage treatment tanks generally lack an effective primary filtration structure at the inlet, allowing impurities carried in the sewage to directly enter the tank. Over time, this can cause wear or blockage of internal components, affecting the treatment effect. In addition, the support structure of existing tanks often uses simple frames or solid foundations, making it difficult to achieve uniform stress distribution. Under the long-term load of sewage weight and external environmental effects, stress concentration can easily occur, leading to tank cracking. Moreover, the anti-corrosion and anti-seepage treatment of traditional tanks often uses a single coating or simple anti-seepage layer, which cannot simultaneously meet the dual protection requirements of the inside and outside. This not only leads to the shortening of the tank's lifespan due to anti-corrosion failure but may also cause sewage overflow due to leakage, polluting the surrounding soil and water environment. Utility Model Content

[0004] In view of the shortcomings of the prior art, the present invention provides a sewage treatment tank to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sewage treatment tank, comprising: Pool body components, support components, and composite protection components; The pool assembly has a gradient double-wall structure. The pool assembly includes an inner layer and an outer layer. The inner layer is a corrosion-resistant polymer composite, and the outer layer is a segmented carbon steel component. The segments of the outer layer are detachably and movably connected by mortise and tenon joints. The pool assembly has a partition inside, which is a hollow laminated fiberglass structure. The top of the pool assembly has a detachable maintenance cover, which is detachably and movablely connected to the top edge of the pool assembly. The side wall of the pool assembly is provided with an inlet and an outlet respectively. The inlet end of the inlet is provided with a filter screen, which is fixedly connected to the inlet end of the inlet. The support assembly includes a prestressed cross truss foundation frame and a three-dimensional curved reinforcing rib. The prestressed cross truss foundation frame is detachably and movablely connected to the foundation through pre-embedded anchor bolts. The reinforcing rib is a honeycomb topological structure, and one side of the reinforcing rib is attached to the outer wall of the outer layer of the pool assembly. The reinforcing rib and the outer layer are fixedly connected through biomimetic anchoring nodes. The composite protection component includes a nanocomposite anti-corrosion coating and a gradient anti-seepage system. The nanocomposite anti-corrosion coating covers the inner wall of the inner layer of the pool component and the outer wall of the outer layer. The gradient anti-seepage system is disposed between the inner wall of the inner layer and the nanocomposite anti-corrosion coating, and the gradient anti-seepage system is fixedly connected to the inner wall of the inner layer.

[0006] Preferably, the inner surface of the inner layer of the pool assembly is provided with a flow guide array, the flow guide array is spirally distributed along the inner wall of the inner layer, and the flow guide array is integrally formed with the inner surface of the inner layer. The spiral guide channel improves the efficiency of sewage sedimentation, and the one-piece molding eliminates the risk of detachment; the spiral angle of the guide channel is adapted to the diameter of the pool to ensure uniform sewage flow without dead corners.

[0007] Preferably, the gradient seepage prevention system is composed of a three-layer polymer film composite, which is fixedly connected by heat fusion. The middle layer of the three-layer polymer film composite is a self-healing material, which is bonded to the upper and lower polymer film composites respectively. The heat-fused connection ensures tight leak prevention, and the self-healing material can heal micro-cracks; the three-layer film has different densities to adapt to the curvature of the inner wall of the inner layer, resulting in a seamless fit.

[0008] Preferably, the top of the prestressed cross truss foundation frame member is fixedly connected to the bottom of the outer layer member of the pool body assembly, and an elastic buffer member is provided between the top of the prestressed cross truss foundation frame member and the bottom of the outer layer member, and the elastic buffer member is respectively attached to the prestressed cross truss foundation frame member and the outer layer member. The elastic buffer reduces vibration and thermal deformation, protecting the pool structure; the buffer is made of aging-resistant rubber and fits perfectly against the contact surfaces of the frame and outer layer.

[0009] Preferably, the reinforcing ribs are provided in multiples, and the multiple reinforcing ribs are evenly spaced along the circumference of the outer layer of the pool body component, and the bottom of each reinforcing rib is fixedly connected to the prestressed cross truss foundation frame component. Evenly distributed reinforcing ribs disperse the stress in the pool body and improve stability; the number of reinforcing ribs is set according to the diameter of the pool body, and the spacing ensures balanced force distribution.

[0010] Preferably, both the inlet and outlet components are variable diameter structural components, with the inner diameter of the inlet component gradually increasing from the inlet end towards the inside of the pool assembly, and the inner diameter of the outlet component gradually increasing from the inside of the pool assembly towards the outlet end. The gradually expanding inlet slows down the flow rate to aid sedimentation, while the gradually expanding outlet prevents clogging; the smooth transition section at the change of diameter avoids water flow impacting the tank body or creating dead corners.

[0011] Preferably, the nanocomposite anti-corrosion coating is a multi-layer cross-linked structure. The multi-layer cross-linked structure is attached to the inner wall of the inner layer and the outer wall of the outer layer of the pool component by electrostatic spraying, and the layers of the multi-layer cross-linked structure are bonded and connected to each other. The electrostatic spray coating has strong adhesion, and the multi-layer cross-linking enhances corrosion resistance; the coating thickness is suitable for both inner and outer walls, providing full coverage without any leaks.

[0012] Preferably, the hollow interlayer of the partition is filled with a sound-absorbing material, which is attached to the inner wall of the hollow interlayer of the partition and is fixedly connected to the inner wall of the hollow interlayer by an adhesive. The sound-absorbing material reduces noise from flowing sewage and is firmly bonded without falling off; the sound-absorbing material is porous ceramic, and the filling density ensures sound insulation.

[0013] In summary, compared with the prior art, this utility model provides a sewage treatment tank with the following beneficial effects: This utility model utilizes a gradient double-wall structure for the pool components. The inner layer consists of corrosion-resistant polymer composites to resist sewage corrosion, while the outer layer is made of segmented carbon steel to ensure structural strength. The mortise and tenon joints facilitate easy assembly and disassembly, offering the advantages of both corrosion resistance and stability, and reducing installation and maintenance difficulty. This solves the problems of insufficient corrosion resistance or strength, and inconvenient assembly and disassembly, resulting from the use of single materials in traditional pools. The inlet filter provides primary filtration of sewage, reducing damage to the pool's interior from impurities and addressing the issue of easy dirt accumulation in traditional pools due to lack of pretreatment. The supporting components, including a prestressed cross-truss foundation frame, honeycomb topology reinforcing ribs, and biomimetic anchoring nodes, ensure uniform stress distribution and stable support, improving resistance to deformation and addressing the stress concentration and cracking issues of traditional pools. Finally, the composite protective components, with their nano-composite anti-corrosion coating and gradient anti-seepage system, provide both internal and external corrosion and leakage prevention, preventing sewage pollution and extending the pool's lifespan. This addresses the problems of poor corrosion and seepage prevention, short lifespan, and susceptibility to contamination found in traditional pools. Attached Figure Description

[0014] Figure 1This is a three-dimensional view of the overall structure of the utility model.

[0015] Figure 2 This is a partial cross-sectional view of the pool body component of this utility model.

[0016] Figure 3 This is a schematic diagram of the component structure of the gradient seepage prevention system of this utility model.

[0017] Figure 4 This is a cross-sectional view of the partition structure of this utility model.

[0018] Explanation of reference numerals in the attached figures: 1. Inner layer components; 2. Outer layer components; 3. Partition components; 4. Inspection cover components; 5. Inlet components; 6. Outlet components; 7. Filter screen components; 8. Prestressed cross truss foundation frame components; 9. Reinforcing ribs; 10. Flow guide array components; 11. Elastic buffer components; 12. Nanocomposite anti-corrosion coating components; 13. Gradient seepage prevention system components. Detailed Implementation

[0019] This utility model provides a technical solution, a sewage treatment pond; please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 and Figure 4 ,include: Pool body components, support components, and composite protection components; The pool body assembly has a gradient double-wall structure. The pool body assembly includes an inner layer 1 and an outer layer 2. The inner layer 1 is a corrosion-resistant polymer composite, and the outer layer 2 is a segmented carbon steel component. The segments of the outer layer 2 are detachably and movably connected by mortise and tenon joints. The pool body assembly has a partition 3 inside, which is a hollow sandwich fiberglass structure. The top of the pool body assembly is provided with a detachable maintenance cover 4, which is detachably and movablely connected to the top edge of the pool body assembly. The side wall of the pool assembly is provided with an inlet component 5 and an outlet component 6 respectively. The inlet end of the inlet component 5 is provided with a filter screen component 7, which is fixedly connected to the inlet end of the inlet component 5. The supporting components include a prestressed cross truss foundation frame 8 and a three-dimensional curved reinforcing rib 9. The prestressed cross truss foundation frame 8 is detachably and movablely connected to the foundation through pre-embedded anchor bolts. The reinforcing rib 9 is a honeycomb topological structure, and one side of the reinforcing rib 9 is attached to the outer wall of the outer layer 2 of the pool component. The reinforcing rib 9 and the outer layer 2 are fixedly connected through biomimetic anchoring nodes. The composite protection component includes a nano-composite anti-corrosion coating component 12 and a gradient anti-seepage system component 13. The nano-composite anti-corrosion coating component 12 covers the inner wall surface of the inner layer component 1 and the outer wall surface of the outer layer component 2 of the pool body component. The gradient anti-seepage system component 13 is disposed between the inner wall surface of the inner layer component 1 and the nano-composite anti-corrosion coating component 12, and the gradient anti-seepage system component 13 is fixedly connected to the inner wall surface of the inner layer component 1. The double-wall structure combines corrosion resistance and strength, the tenon and mortise connection makes it easy to disassemble and assemble, the partition provides sound insulation, the inspection cover facilitates maintenance, the filter screen filters impurities, the support components stabilize the pool body, and the protective components prevent corrosion and leakage. The mortise and tenon joint is adapted to the size of carbon steel parts, and the biomimetic anchoring node ensures that the reinforcing ribs fit tightly against the outer part 2.

[0020] Please see Figure 1 The inner surface of the inner layer 1 of the pool assembly is provided with a flow guide array 10. The flow guide array 10 is spirally distributed along the inner wall of the inner layer 1, and the flow guide array 10 is integrally formed with the inner surface of the inner layer 1. The spiral guide channel improves the efficiency of sewage sedimentation, and the one-piece molding eliminates the risk of detachment; the spiral angle of the guide channel is adapted to the diameter of the pool to ensure uniform sewage flow without dead corners.

[0021] Please see Figure 1 The gradient seepage prevention system component 13 is composed of a three-layer polymer film composite component. The three-layer polymer film composite component is fixedly connected by hot melting. The middle layer of the three-layer polymer film composite component is a self-healing material component, which is bonded to the upper and lower polymer film composite components respectively. The heat-fused connection is tight and leak-proof, and the self-healing material can heal micro-cracks; the three-layer film has different densities to match the inner wall curvature of the inner layer component 1, and fits without gaps.

[0022] Please see Figure 1 The top of the prestressed cross truss foundation frame 8 is fixedly connected to the bottom of the outer layer 2 of the pool body assembly, and an elastic buffer 11 is provided between the top of the prestressed cross truss foundation frame 8 and the bottom of the outer layer 2. The elastic buffer 11 is respectively attached to the prestressed cross truss foundation frame 8 and the outer layer 2. The elastic buffer 11 relieves vibration and thermal deformation, protecting the pool structure; the buffer is made of aging-resistant rubber and fits perfectly against the contact surfaces of the frame 8 and the outer layer 2.

[0023] Please see Figure 1 Multiple reinforcing ribs 9 are provided, and the multiple reinforcing ribs 9 are evenly spaced along the circumference of the outer layer 2 of the pool body component, and the bottom of each reinforcing rib 9 is fixedly connected to the prestressed cross truss foundation frame 8. Evenly distributed reinforcing ribs disperse the stress in the pool body and improve stability; the number of reinforcing ribs is set according to the diameter of the pool body, and the spacing ensures balanced force distribution.

[0024] Please see Figure 1 Both the inlet component 5 and the outlet component 6 are variable diameter structural components. The inner diameter of the inlet component 5 gradually increases from the inlet end towards the inside of the pool assembly, and the inner diameter of the outlet component 6 gradually increases from the inside of the pool assembly towards the outlet end. The gradually expanding inlet slows down the flow rate to aid sedimentation, while the gradually expanding outlet prevents clogging; the smooth transition section at the change of diameter avoids water flow impacting the tank body or creating dead corners.

[0025] Please see Figure 2 The nanocomposite anti-corrosion coating 12 is a multi-layer cross-linked structure. The multi-layer cross-linked structure is attached to the inner wall of the inner layer 1 and the outer wall of the outer layer 2 of the pool component by electrostatic spraying process, and the layers of the multi-layer cross-linked structure are bonded and connected to each other. The electrostatic spray coating has strong adhesion, and the multi-layer cross-linking enhances corrosion resistance; the coating thickness is suitable for both inner and outer walls, providing full coverage without any leaks.

[0026] Please see Figure 1 and Figure 3 The hollow interlayer of the partition 3 is filled with sound-absorbing material, which is attached to the inner wall of the hollow interlayer of the partition 3, and the sound-absorbing material is fixedly connected to the inner wall of the hollow interlayer by an adhesive. The sound-absorbing material reduces noise from flowing sewage and is firmly bonded without falling off; the sound-absorbing material is porous ceramic, and the filling density ensures sound insulation.

[0027] Working principle: Wastewater first undergoes primary filtration through the filter screen 7 at the inlet end of the inlet component 5 to remove large particles of impurities; the variable diameter structure of the inlet component 5 gradually expands the inner diameter, slowing down the wastewater flow rate. Subsequently, the wastewater flows into the tank assembly, where the spiral flow channel array 10, distributed along the inner surface of the inner layer component 1, forms a spiral flow, improving sedimentation efficiency; the baffle 3 within the tank assembly separates the space and reduces flow noise, and the removable inspection cover 4 on top facilitates later maintenance; in the support assembly, the prestressed cross truss foundation frame 8 is fixed to the foundation by pre-embedded anchor bolts. The elastic buffer 11 between the top and the outer layer 2 alleviates vibration and thermal deformation. Multiple three-dimensional curved reinforcing ribs 9 are evenly distributed around the circumference of the outer layer 2. The bottom is connected to the prestressed cross truss foundation frame 8, and the side is connected to the outer layer 2 through biomimetic anchoring nodes, which together stabilize the pool. In the composite protection component, the gradient seepage prevention system 13 is attached to the inner wall of the inner layer 1 and can self-heal microcracks. The nano-composite anti-corrosion coating 12 covers the inner wall of the inner layer 1 and the outer wall of the outer layer 2 to prevent corrosion damage. The treated sewage is discharged through the outlet 6 to avoid blockage.

Claims

1. A sewage treatment tank, characterized in that, include: Pool body components, support components, and composite protection components; The pool body assembly is a gradient double-wall structure. The pool body assembly includes an inner layer (1) and an outer layer (2). The inner layer (1) is a corrosion-resistant polymer composite, and the outer layer (2) is a segmented carbon steel component. The segments of the outer layer (2) are connected to each other by mortise and tenon joints. The pool body assembly is provided with a partition (3) inside. The partition (3) is a hollow sandwich fiberglass structure. The top of the pool body assembly is provided with a maintenance cover (4). The maintenance cover (4) is movably connected to the top edge of the pool body assembly. The side wall of the pool assembly is provided with an inlet component (5) and an outlet component (6), and the inlet end of the inlet component (5) is provided with a filter screen component (7), which is fixedly connected to the inlet end of the inlet component (5). The support assembly includes a prestressed cross truss foundation frame (8) and a reinforcing rib (9). The prestressed cross truss foundation frame (8) is movably connected to the foundation through pre-embedded anchor bolts. The reinforcing rib (9) is a honeycomb topological structure, and one side of the reinforcing rib (9) is attached to the outer wall of the outer layer (2) of the pool assembly. The reinforcing rib (9) and the outer layer (2) are fixedly connected through biomimetic anchoring nodes. The composite protection component includes a nanocomposite anti-corrosion coating (12) and a gradient anti-seepage system component (13). The nanocomposite anti-corrosion coating (12) covers the inner wall of the inner layer component (1) and the outer wall of the outer layer component (2) of the pool body component. The gradient anti-seepage system component (13) is disposed between the inner wall of the inner layer component (1) and the nanocomposite anti-corrosion coating (12), and the gradient anti-seepage system component (13) is fixedly connected to the inner wall of the inner layer component (1).

2. The sewage treatment tank according to claim 1, characterized in that: The inner surface of the inner layer component (1) of the pool body assembly is provided with a flow guide array (10), the flow guide array (10) is spirally distributed along the inner wall surface of the inner layer component (1), and the flow guide array (10) is integrally formed with the inner surface of the inner layer component (1).

3. The sewage treatment tank according to claim 1, characterized in that: The gradient seepage prevention system component (13) is composed of a three-layer polymer film composite component. The three-layer polymer film composite component is fixedly connected by hot melting. The middle layer of the three-layer polymer film composite component is a self-healing material component. The self-healing material component is respectively bonded and connected to the upper and lower polymer film composite components.

4. A sewage treatment tank according to claim 1, characterized in that: The top of the prestressed cross truss foundation frame member (8) is fixedly connected to the bottom of the outer layer member (2) of the pool body assembly, and an elastic buffer member (11) is provided between the top of the prestressed cross truss foundation frame member (8) and the bottom of the outer layer member (2). The elastic buffer member (11) is respectively attached to the prestressed cross truss foundation frame member (8) and the outer layer member (2).

5. A sewage treatment tank according to claim 1, characterized in that: The reinforcing ribs (9) are provided in multiples, and the multiple reinforcing ribs (9) are evenly spaced along the circumference of the outer layer (2) of the pool body assembly, and the bottom of each reinforcing rib (9) is fixedly connected to the prestressed cross truss foundation frame (8).

6. A sewage treatment tank according to claim 1, characterized in that: Both the inlet component (5) and the outlet component (6) are variable diameter structural components. The inner diameter of the inlet component (5) gradually increases from the inlet end towards the inside of the pool assembly, and the inner diameter of the outlet component (6) gradually increases from the inside of the pool assembly towards the outlet end.

7. A sewage treatment tank according to claim 1, characterized in that: The nanocomposite anti-corrosion coating component (12) is a multi-layer cross-linked structure component. The multi-layer cross-linked structure component is attached to the inner wall surface of the inner layer component (1) and the outer wall surface of the outer layer component (2) of the pool body component by electrostatic spraying process, and the layers of the multi-layer cross-linked structure component are bonded and connected to each other.

8. A sewage treatment tank according to claim 1, characterized in that: The hollow interlayer of the partition (3) is filled with a sound-absorbing material, which is attached to the inner wall of the hollow interlayer of the partition (3) and is fixedly connected to the inner wall of the hollow interlayer by an adhesive.

Images