Biological treatment device for breeding tail water

Abstract

The utility model relates to the technical field of tail water treatment, and discloses a biological treatment device for breeding tail water, which comprises a water pipe and an aeration tank, one end of the water inlet pipe is fixedly connected with a grit chamber, the inner wall of the grit chamber is fixedly connected with a liquid flowing plate, the outer wall of the grit chamber is fixedly connected with a drain pipe, one end of the drain pipe is provided with an oxygen supply component, and the other end of the drain pipe is provided with a water outlet. A one-way valve assembly is arranged on the outer wall of the aeration tank; the one-way valve assembly comprises a fourth connecting pipe, the side wall of the fourth connecting pipe is fixedly connected to the outer wall of the aeration tank, one end of the fourth connecting pipe is fixedly connected with an annular column, and the inner wall of the annular column is fixedly connected with a fixing plate. According to the biological treatment device, the fixing column is driven by the sealing plug to move, the spring on the outer wall is contracted by the fixing column, and the fixing column slides in the lantern ring, so that the effect of a one-way valve is achieved, the problem that when the device is stopped due to the absence of the one-way valve, liquid flows back and is mixed is solved, and the stability of the biological treatment device is improved.

Description

Technical Field

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

[0002] With the rapid development of aquaculture, the discharge of aquaculture wastewater has become a critical environmental issue that urgently needs to be addressed. Aquaculture wastewater is rich in organic matter, nutrients such as nitrogen and phosphorus, as well as pathogens. If discharged directly without effective treatment, it will severely pollute the surrounding aquatic environment, disrupt the aquatic ecological balance, and affect fishery resources and the safety of agricultural irrigation water. Therefore, developing efficient and reliable biological treatment devices for aquaculture wastewater is of significant practical importance. These devices can achieve the purification and compliant discharge of aquaculture wastewater, promoting the sustainable development of aquaculture.

[0003] In existing biological treatment technologies for aquaculture wastewater, common mechanical structures include traditional sedimentation tanks and biofilters. Sedimentation tanks primarily rely on gravity settling to precipitate suspended particles in the wastewater, reducing turbidity. Biofilters utilize a microbial film attached to the filter media to decompose and transform organic matter in the wastewater. While these technologies can remove some pollutants from the wastewater to a certain extent, they have shortcomings in terms of overall treatment processes and coordinated equipment operation.

[0004] A common problem with existing technologies is the lack of an effective one-way control mechanism for the connections between treatment units and the flow of liquid in the entire treatment system. When the device stops operating, the absence of a check valve-like structure makes backflow of liquid easy to occur. This backflow causes treated water to mix with untreated water, significantly reducing the treatment effect and making it impossible to guarantee the stable and efficient operation of the biological treatment device. This greatly affects the purification quality and treatment efficiency of the effluent, thus adversely impacting subsequent discharge and reuse. Therefore, a biological treatment device for aquaculture effluent is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a biological treatment device for aquaculture wastewater, which aims to improve the problem that liquid backflow easily occurs when the device stops operating due to the lack of a one-way valve-like structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A biological treatment device for aquaculture wastewater includes an inlet pipe and an aeration tank. One end of the inlet pipe is fixedly connected to a sedimentation tank. A liquid flow plate is fixedly connected to the inner wall of the sedimentation tank. A drain pipe is fixedly connected to the outer wall of the sedimentation tank. An oxygen supply component is installed at one end of the drain pipe. A one-way valve component is installed on the outer wall of the aeration tank.

[0008] The one-way valve assembly includes a fourth connecting pipe, the side wall of which is fixedly connected to the outer wall of the aeration tank. One end of the fourth connecting pipe is fixedly connected to a circular column. A fixing plate is fixedly connected to the inner wall of the circular column. A collar is fixedly connected to the side wall of the fixing plate. A fixing column is slidably connected to the inner wall of the collar. A spring is provided on the outer wall of the fixing column. One end of the spring is fixedly connected to the side wall of the collar. The other end of the spring is fixedly connected to a sealing plug. The side wall of the sealing plug is fixedly connected to the side wall of the fixing column. The outer wall of the sealing plug is slidably connected to the inside of the circular column. Another side wall of the fourth connecting pipe is provided with a stirring assembly.

[0009] As a further description of the above technical solution:

[0010] The oxygen supply assembly includes an air compressor, the sidewall of which is disposed on the outer wall of the drain pipe, the output end of which is fixedly connected to a first connecting pipe, the outer wall of which is fixedly connected to a support plate, the sidewall of which is fixedly connected to an aeration tank, and one end of which is fixedly connected to an aeration pipe.

[0011] As a further description of the above technical solution:

[0012] The stirring assembly includes a stirring tank, the outer wall of which is fixedly connected to the outer wall of a fourth connecting pipe, a first motor fixedly connected to the top of the stirring tank, a stirring blade fixedly connected to the output end of the first motor, and the outer wall of the stirring blade rotatably connected to the inner wall of the stirring tank.

[0013] As a further description of the above technical solution:

[0014] A material tank is fixedly connected to the top of the mixing tank, a first connecting block is fixedly connected to the bottom of the material tank, a first hydraulic cylinder is rotatably connected to the inner wall of the first connecting block, and a second connecting block is fixedly connected to the output end of the first hydraulic cylinder.

[0015] As a further description of the above technical solution:

[0016] The bottom of the material tank is fixedly connected to a second connecting pipe, one end of the second connecting pipe is fixedly connected to a third connecting block, the inner wall of the third connecting block is rotatably connected to a rotating column, the side wall of the rotating column is rotatably connected to the side wall of the second connecting block, and the outer wall of the material tank is fixedly connected to a second hydraulic cylinder.

[0017] As a further description of the above technical solution:

[0018] A piston is fixedly connected to the output end of the second hydraulic cylinder, and a hollow column is slidably connected to the outer wall of the piston. The bottom of the hollow column is fixedly connected to the top of the third connecting block.

[0019] As a further description of the above technical solution:

[0020] The bottom of the third connecting block is fixedly connected to a third connecting pipe, and one end of the third connecting pipe is fixedly connected to a squeezing pipe. The bottom of the squeezing pipe is located at the top of the mixing tank.

[0021] As a further description of the above technical solution:

[0022] The outer wall of the mixing tank is provided with a filter tank, the inner wall of the filter tank is fixedly connected with a filter plate, and the outer wall of the filter tank is fixedly connected with a water outlet pipe.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the fixed column is moved by the force of the sealing plug. The movement of the fixed column causes the outer wall spring to contract, and then the fixed column slides inside the collar, achieving the effect of a one-way valve. This solves the problem of liquid backflow and mixing when the device stops due to the lack of a one-way valve, thus improving the stability of the biological treatment device.

[0025] 2. In this utility model, the second connecting block is driven to rotate by the first hydraulic cylinder. The second connecting block drives the rotating column to rotate inside the third connecting block. Then, the piston is driven to move by the second hydraulic cylinder. The piston then slides on the inner wall of the hollow column. The piston then removes the liquid from the squeezing pipe, achieving the effect of quantitative addition of liquid. This solves the problem of insufficient addition due to the inability to quantitatively add liquid, which makes it difficult to effectively remove pollutants in the water. This improves the practicality of the biological treatment device. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of the biological treatment device for aquaculture wastewater proposed in this utility model.

[0027] Figure 2 This is a schematic cross-sectional view of the sedimentation tank of the biological treatment device for aquaculture wastewater proposed in this utility model.

[0028] Figure 3 This is a schematic diagram of the outer wall structure of the aeration tank of the biological treatment device for aquaculture wastewater proposed in this utility model.

[0029] Figure 4 This is a schematic cross-sectional view of the mixing tank of the biological treatment device for aquaculture wastewater proposed in this utility model.

[0030] Figure 5 This is a schematic diagram of the outer wall structure of the loading tank of the biological treatment device for aquaculture wastewater proposed in this utility model.

[0031] Figure 6This is a schematic cross-sectional view of the filter tank of the biological treatment device for aquaculture wastewater proposed in this utility model.

[0032] Figure 7 for Figure 1 Enlarged view of point A in the middle;

[0033] Figure 8 for Figure 3 Enlarged view of point B in the middle.

[0034] Legend:

[0035] 1. Sedimentation tank; 2. Inlet pipe; 3. Mixing tank; 4. Aeration tank; 5. Filter tank; 6. Outlet pipe; 7. Liquid flow plate; 8. Drain pipe; 9. Air compressor; 10. First connecting pipe; 11. Support plate; 12. First motor; 13. Mixing blade; 14. Material tank; 15. First connecting block; 16. First hydraulic cylinder; 17. Second connecting block; 18. Rotating column; 19. Third connecting block; 20. Second connecting pipe; 21. Second hydraulic cylinder; 22. Piston; 23. Third connecting pipe; 24. Squeezing pipe; 25. Filter plate; 26. Fourth connecting pipe; 27. Circular column; 28. Sealing plug; 29. ​​Fixing plate; 30. Spring; 31. Collar; 32. Fixing column; 33. Hollow column; 34. Aeration pipe. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] Reference Figure 1 and Figure 7 An embodiment of this utility model is provided: a biological treatment device for aquaculture wastewater, including an inlet pipe 2 and an aeration tank 4, an oxygen supply component is provided at one end of the drain pipe 8, and a one-way valve component is provided on the outer wall of the aeration tank 4.

[0038] The one-way valve assembly includes a fourth connecting pipe 26, which is typically made of polyvinyl chloride (PVC). PVC is highly corrosion-resistant, effectively resisting the erosion of various chemicals in aquaculture wastewater, ensuring that the fourth connecting pipe 26 will not be corroded or damaged during long-term use and guaranteeing the normal operation of the device. The side wall of the fourth connecting pipe 26 is fixedly connected to the outer wall of the aeration tank 4. One end of the fourth connecting pipe 26 is equipped with a circular ring 27, and a fixing plate 29 is fixedly connected to the inner wall of the circular ring 27. The fixing plate 29 is generally made of engineering plastic, which has good mechanical and insulating properties, meeting the fixing and support requirements of the fixing plate 29 in the device. A collar 31 is fixedly connected to the side wall of the fixing plate 29, and a fixing post 32 is slidably connected to the inner wall of the collar 31. The fixing post 32 can be selected from... Made of aluminum alloy, which is lightweight and high-strength, the fixed column 32 can slide flexibly while having sufficient strength to support other components. A spring 30 is provided on the outer wall of the fixed column 32. One end of the spring 30 is fixedly connected to the side wall of the collar 31, and the other end of the spring 30 is fixedly connected to a sealing plug 28. The sealing plug 28 is usually made of rubber, which has good flexibility and sealing properties. It can fit tightly inside the ring column 27 to play a good sealing role and prevent the tail water from flowing back. The side wall of the sealing plug 28 is fixedly connected to the side wall of the fixed column 32, and the outer wall of the sealing plug 28 is slidably connected to the inside of the ring column 27. Another fourth connecting pipe 26 has a stirring component on its side wall.

[0039] Specifically, as the liquid flows through the pipe, it pushes the sealing plug 28. Under the pressure of the liquid, the sealing plug 28 moves the fixing post 32 on its side wall. This movement causes the fixing post 32 to slide inside the collar 31. During this movement, the fixing post 32 causes the spring 30 on the outer wall to contract. This contraction of the spring 30 generates a reaction force, ensuring that the sealing plug 28 is sealed in the appropriate position, thus achieving the effect of a one-way valve. This not only effectively controls the direction of liquid flow and prevents backflow, but also ensures the efficient operation and stability of the device.

[0040] Reference Figure 1 , Figure 4 and Figure 5The mixing assembly includes a mixing tank 3, the outer wall of which is fixedly connected to the side wall of another fourth connecting pipe 26. A first motor 12 is fixedly connected to the top of the mixing tank 3, and a mixing blade 13 is fixedly connected to the output end of the first motor 12. The mixing blade 13 is mostly made of alloy steel, which has high strength, high toughness, and good wear resistance, and is not easily deformed or damaged during high-speed mixing. The outer wall of the mixing blade 13 is rotatably connected to the inner wall of the mixing tank 3. A material carrier tank 14 is fixedly connected to the top of the mixing tank 3. The material carrier tank 14 can be made of polyethylene, which has good chemical stability, is resistant to most chemicals, and has low cost, making it suitable for storing various agents added to aquaculture wastewater. A first connecting block 15 is fixedly connected to the bottom of the material carrier tank 14, and a first hydraulic cylinder 16 is rotatably connected to the inner wall of the first connecting block 15. A second connecting block 17 is fixedly connected to the output end of the first hydraulic cylinder 16. A second connecting pipe 20 is fixedly connected to the bottom of the material carrier tank 14. A third connecting block 19 is fixedly connected to one end. A rotating column 18 is rotatably connected to the inner wall of the third connecting block 19. The side wall of the rotating column 18 is rotatably connected to the side wall of the second connecting block 17. A second hydraulic cylinder 21 is fixedly connected to the outer wall of the material tank 14. A piston 22 is fixedly connected to the output end of the second hydraulic cylinder 21. The piston 22 is generally made of a composite material of wear-resistant rubber and metal skeleton. The rubber part provides good sealing performance, and the metal skeleton ensures strength. A hollow column 33 is slidably connected to the outer wall of the piston 22. The hollow column 33 can be made of aluminum alloy, which is lightweight and has the strength to meet the requirements of use. The bottom of the hollow column 33 is fixedly connected to the top of the third connecting block 19. A third connecting pipe 23 is fixedly connected to the bottom of the third connecting block 19. A squeezing pipe 24 is fixedly connected to one end of the third connecting pipe 23. The squeezing pipe 24 can be made of silicone. Silicone has good flexibility and chemical stability, is easy to install, and can adapt to the delivery of the agent. The bottom of the squeezing pipe 24 is set at the top of the mixing tank 3.

[0041] Specifically, the liquid in the loading tank 14 is temporarily stored through the second connecting pipe 20. Then, the output end of the second hydraulic cylinder 21 drives the piston 22 to move along the inner wall of the hollow column 33. The movement of the piston 22 generates a certain impact force, which is then transmitted to the interior of the third connecting block 19. Simultaneously, the output end of the first hydraulic cylinder 16 drives the rotating column 18 to rotate, which rotates inside the third connecting block 19. It is worth noting that both the outer walls of the third connecting block 19 and the rotating column 18 have multiple holes. When the rotating column 18 rotates, these holes allow the liquid to be precisely delivered through the third connecting pipe 23 to the interior of the squeezing pipe 24. Subsequently, the liquid is discharged under pressure, flowing into the mixing tank 3, achieving quantitative liquid dispensing and ensuring precise control of the added liquid.

[0042] After the liquid is dispensed, the output of the first motor 12 drives the stirring blade 13 to rotate. The stirring blade 13 rotates inside the mixing tank 3, and through its blade design and rotational action, it can effectively and uniformly stir the liquid inside the tank. This stirring process not only ensures thorough mixing of the liquid but also improves stirring efficiency, allowing the liquid components inside the mixing tank 3 to be evenly distributed, achieving a uniform stirring effect. The entire device can not only achieve precise liquid dispensing but also ensure the high efficiency and uniformity of the stirring process, making it suitable for various liquid processing scenarios that require precise control and uniform mixing.

[0043] Reference Figure 1 , Figure 3 , Figure 6 and Figure 8 One end of the inlet pipe 2 is fixedly connected to the sedimentation tank 1. The inner wall of the sedimentation tank 1 is fixedly connected to the liquid flow plate 7. The outer wall of the sedimentation tank 1 is fixedly connected to the drain pipe 8. The oxygen supply component includes an air compressor 9. The side wall of the air compressor 9 is set on the outer wall of the drain pipe 8. The output end of the air compressor 9 is fixedly connected to the first connecting pipe 10. The outer wall of the first connecting pipe 10 is fixedly connected to the support plate 11. The side wall of the support plate 11 is fixedly connected to the aeration tank 4. One end of the first connecting pipe 10 is fixedly connected to the aeration pipe 34. The outer wall of the mixing tank 3 is provided with a filter tank 5. The inner wall of the filter tank 5 is fixedly connected to the filter plate 25. The filter plate 25 can be made of polypropylene, which has good chemical stability and filtration performance and can effectively filter impurities and small particles in the aquaculture tail water. The outer wall of the filter tank 5 is fixedly connected to the outlet pipe 6.

[0044] Specifically, when using the biological treatment device for aquaculture wastewater, the liquid is first discharged into the sedimentation tank 1 through the inlet pipe 2. In the sedimentation tank 1, the liquid undergoes initial sedimentation. Then, the liquid continues to flow through the liquid flow plate 7. The design of the liquid flow plate 7 allows sand and other substances in the liquid to further settle and fall to the top, achieving initial solid separation. The pre-treated liquid then flows into the aeration tank 4 through the drain pipe 8. In the aeration tank 4, the output of the air compressor 9 introduces gas through the first connecting pipe 10. The gas then aerates the liquid through the fourth connecting pipe 26, increasing the oxygen content and creating favorable conditions for subsequent biological treatment. This not only effectively separates solid impurities from the liquid but also increases the dissolved oxygen content through aeration, providing necessary support for the biological treatment process. Subsequently, the liquid flows into the filter tank 5. In the filter tank 5, the filter plate 25 plays a crucial role in further filtering impurities within the liquid. The filter plate 25 typically consists of multiple layers of filter media, effectively removing suspended solids, particulate matter, and other impurities from the liquid, ensuring the purity of the liquid. The filtered liquid is discharged through the outlet pipe 6 and then enters the circulation system to achieve liquid circulation. This not only improves the liquid treatment efficiency but also reduces resource waste, ensures that the liquid can be reused multiple times in the system, and reduces production costs.

[0045] Working principle: When using the biological treatment device for aquaculture wastewater, the liquid is first discharged into the sedimentation tank 1 through the inlet pipe 2. Then, the sand and other materials in the liquid fall to the top of the liquid flow plate 7 through the liquid flow plate 7. Subsequently, the liquid flows into the aeration tank 4 through the drain pipe 8. Then, the gas is discharged through the first connecting pipe 10 through the output end of the air compressor 9. Aeration is then carried out through the fourth connecting pipe 26 to increase the oxygen content of the liquid.

[0046] The liquid then pushes the sealing plug 28, which in turn moves the fixing post 32 on the side wall. The moving fixing post 32 slides inside the collar 31, and the moving fixing post 32 then causes the spring 30 on the outer wall to contract, thus achieving the effect of a one-way valve.

[0047] Next, the liquid in the loading tank 14 is temporarily stored through the second connecting pipe 20. Then, the output end of the second hydraulic cylinder 21 drives the piston 22 to move inside the hollow column 33. The movement of the piston 22 creates impact pressure, which is then transmitted to the inside of the third connecting block 19. The first hydraulic cylinder 16 drives the rotating column 18 to rotate, and the rotating column 18 rotates inside the third connecting block 19. Both the outer walls of the third connecting block 19 and the rotating column 18 have multiple holes. When the rotating column 18 rotates, the liquid is pushed through the holes into the squeezing pipe 24 through the third connecting pipe 23. Then, the liquid is discharged by pressure, allowing the liquid to flow into the mixing tank 3, achieving the effect of quantitative addition of liquid. Subsequently, the output end of the first motor 12 drives the stirring blade 13 to rotate, so that the stirring blade 13 rotates inside the mixing tank 3, achieving the effect of uniform mixing.

[0048] The liquid then passes through the interior of the liquid flow filter tank 5, where the filter plate 25 further filters out impurities. Finally, the liquid is discharged through the outlet pipe 6, allowing it to circulate.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A biological treatment plant for rearing effluent, comprising an inlet pipe (2) and an aeration tank (4), characterised in that: The water inlet pipe (2) one end is fixedly connected with the sand trap (1), the sand trap (1) inner wall is fixedly connected with liquid flow plate (7), the sand trap (1) outer wall is fixedly connected with drain pipe (8), the drain pipe (8) one end is provided with oxygen supply assembly, the aeration tank (4) outer wall is provided with one-way valve assembly; The one-way valve assembly includes a fourth connecting pipe (26), the fourth connecting pipe (26) side wall is fixedly connected to the aeration tank (4) outer wall, the fourth connecting pipe (26) one end is fixedly connected with a circular ring column (27), the circular ring column (27) inner wall is fixedly connected with a fixed plate (29), the fixed plate (29) side wall is fixedly connected with a sleeve ring (31), the sleeve ring (31) inner wall is slidably connected with a fixed column (32), the fixed column (32) outer wall is provided with a spring (30), the spring (30) one end is fixedly connected to the sleeve ring (31) side wall, the spring (30) the other end is fixedly connected with a sealing plug (28), the sealing plug (28) side wall is fixedly connected to the fixed column (32) side wall, the sealing plug (28) outer wall is slidably connected in the circular ring column (27), another fourth connecting pipe (26) side wall is provided with a stirring assembly.

2. The biological treatment device for aquaculture effluent according to claim 1, characterized by: The oxygen supply assembly includes an air compressor (9), the air compressor (9) side wall is provided on the drain pipe (8) outer wall, the air compressor (9) output end is fixedly connected with a first connecting pipe (10), the first connecting pipe (10) outer wall is fixedly connected with a support plate (11), the support plate (11) side wall is fixedly connected with an aeration tank (4), the first connecting pipe (10) one end is fixedly connected with an aeration pipe (34).

3. The biological treatment device for aquaculture effluent according to claim 1, characterized by: The stirring assembly includes a stirring tank (3), the stirring tank (3) outer wall is fixedly connected to the fourth connecting pipe (26) outer wall, the stirring tank (3) top is fixedly connected with a first motor (12), the first motor (12) output end is fixedly connected with a stirring blade (13), the stirring blade (13) outer wall is rotatably connected to the stirring tank (3) inner wall.

4. The biological treatment device for aquaculture effluent according to claim 3, characterized by: The stirring tank (3) top is fixedly connected with a load tank (14), the load tank (14) bottom is fixedly connected with a first connecting block (15), the first connecting block (15) inner wall is rotatably connected with a first hydraulic cylinder (16), the first hydraulic cylinder (16) output end is fixedly connected with a second connecting block (17).

5. The biological treatment device for aquaculture effluent according to claim 4, characterized by: The load tank (14) bottom is fixedly connected with a second connecting pipe (20), the second connecting pipe (20) one end is fixedly connected with a third connecting block (19), the third connecting block (19) inner wall is rotatably connected with a rotating column (18), the rotating column (18) side wall is rotatably connected to the second connecting block (17) side wall, the load tank (14) outer wall is fixedly connected with a second hydraulic cylinder (21).

6. The biological treatment device for aquaculture effluent according to claim 5, characterized by: The second hydraulic cylinder (21) output end is fixedly connected with a piston (22), the piston (22) outer wall is slidably connected with a hollow column (33), the hollow column (33) bottom is fixedly connected to the third connecting block (19) top.

7. The biological treatment device for farming effluent according to claim 6, characterized by: The third connecting block (19) is fixedly connected with a third connecting pipe (23) at the bottom, one end of the third connecting pipe (23) is fixedly connected with a liquid squeezing pipe (24), and the bottom of the liquid squeezing pipe (24) is arranged at the top of the stirring tank (3).

8. The biological treatment device for aquaculture effluent according to claim 3, characterized by: The outer wall of the stirring tank (3) is provided with a filter tank (5), the inner wall of the filter tank (5) is fixedly connected with a filter plate (25), and the outer wall of the filter tank (5) is fixedly connected with a water outlet pipe (6).

Images