Ecological tail water treatment system

Abstract

The invention discloses an ecological tail water treatment system, which comprises a culture area, a tail water storage adjusting tank, a purification area and an inlet water treatment system which are sequentially and circularly communicated, the purification area comprises a vortex separation tank, an inclined plate sedimentation tank, a brush treatment tank, a filler denitrification tank, an aeration filler tank, a secondary sedimentation tank, a salt-tolerant plant area, a microalgae purification tank and a shellfish biological filter, a filtering system convenient to replace and clean and an aeration system with a strong water stirring function are additionally arranged on a dam of the tail water storage adjusting pond, the water inlet treatment system is communicated with the breeding area, and the vortex separation pond, the inclined plate sedimentation pond, the brush treatment pond, the filler denitrification pond and the aeration filler pond are all communicated with the fermentation pond. The water inlet treatment system comprises a water inlet pipe group penetrating through the tail water storage regulating reservoir, and the water inlet pipe group exchanges heat with water in the tail water storage regulating reservoir, so that the water temperature is balanced. The ecological tail water treatment system provided by the invention can fully adjust the temperature of inlet water, and can more efficiently and fully purify the circulating water body.

Description

Technical Field

[0001] The invention relates to an ecological tail water treatment system, in particular to an ecological tail water treatment system in the field of seawater aquaculture. Background Art

[0002] The invention patent with the announcement number CN105399286A and the name "A new type of in-situ ecological restoration system for aquaculture water bodies" discloses a new type of in-situ ecological restoration system for aquaculture water bodies. It includes one or more sedimentation tanks arranged in sequence along the water flow, a floating ball pool for attaching beneficial microorganisms, a floating plant purification pool, one or more artificial wetland purification pools, a microalgae purification pool, an algae-eating worm purification pool, a fish and mussel purification pool for removing residual microalgae and algae-eating worms, and finally an aeration pool for increasing the dissolved oxygen content in the water. The artificial wetland purification pool is provided with purification filter materials and aquatic plants are planted. Different types of pools are mainly aimed at removing carbon, phosphorus nutrients and organic matter types in the water. This application can effectively remove most of the COD, nitrogen, phosphorus and suspended matter in the water through the reasonable arrangement of each pool in sequence. Therefore, the water purified and repaired by this system has fewer impurities, a high purification rate and a high oxygen content. However, the system's treatment did not fully consider the balance between the circulating influent water and the aquaculture area water, and the filtration efficiency was low. The tailwater storage and regulating tank was not set up and fully utilized to improve the heat exchange and filtration efficiency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an ecological tailwater treatment system, the circulating water inlet of which can achieve efficient heat exchange and more fully balance the water temperature.

[0004] To this end, the ecological tailwater treatment system provided by the present invention includes a breeding area, a tailwater storage and regulating tank, a purification area and an influent treatment system that are circulated and connected in sequence. The purification area includes a vortex separation tank, an inclined plate sedimentation tank, a brush treatment tank, a filler denitrification tank, a waterfall filler tank, a secondary sedimentation tank, a salt-tolerant plant area, a microalgae purification tank and a shellfish biofilter. The shellfish biofilter is equipped with an external standard discharge outlet. The shellfish biofilter is connected to the influent treatment system, and the influent treatment system is connected to the breeding area. The vortex separation tank, the inclined plate sedimentation tank, the brush treatment tank, the filler denitrification tank and the waterfall filler tank are all connected to the fermentation tank, and the fermentation tank is connected to the sediment solidification tank. The influent treatment system includes an influent pipe group passing through the tailwater storage and regulating tank. The influent pipe group exchanges heat with the water body in the tailwater storage and regulating tank to balance the water temperature in the influent pipe group.

[0005] Preferably, the salt-tolerant plant area is respectively connected to a plurality of microalgae purification pools, each of which is connected to the shellfish biofilter, and each of which is connected to the shellfish biofilter via a water flow communication control system to achieve forward and reverse bidirectional water flow control.

[0006] Preferably, the solidified sediment obtained in the sediment solidification pool is transported to the vegetable planting area as vegetable planting soil.

[0007] Preferably, the water inlet pipe group is immersed in the tailwater storage and regulating tank, the water inlet pipe group includes a first water inlet end connected to the purification area, a second water inlet end connected to the external water source and a water outlet end connected to the breeding area, the water inlet pipe group includes a pipe with repeated multiple bends, a pipe support is arranged below the water inlet pipe group, the pipe support is fixed to the bottom of the tailwater storage and regulating tank, the water inlet pipe group has a curved heat exchange pipe that penetrates into the water body of the breeding area, the water outlet end is at the end of the curved heat exchange pipe and discharges water to the breeding area.

[0008] Preferably, the tailwater storage and regulating pond has an obliquely distributed dam, and there is a track on the oblique part along the height direction of the dam surface, and a flat cubic purification adsorption module is slidably installed on the track, and at least two ropes are connected to the upper ends of the purification adsorption modules, and the upper ends of the ropes are rotatably connected to the rollers. A motor is arranged on the top of the dam, and the motor drives the rollers to drive multiple purification adsorption modules to move up and down. The tailwater from the breeding area is discharged to release kinetic energy, which causes the water body in the tailwater storage and regulating pond to fluctuate, and the water body is moved to hit the purification adsorption module. A high-pressure water flow pipe group is installed, and the nozzle of the high-pressure water flow pipe group is above the drainage trough. There is a filter layer in the drainage trough, and a drainage pipe connected to the tailwater storage and regulating tank is provided below the filter layer. The drainage trough is covered with a drainage surface cover densely covered with water-permeable holes. The purification adsorption module is pulled upward to reach the top of the dam and is below the water spray port of the high-pressure water flow pipe group. The purification adsorption module has a filter material placement layer and a purification material installation part, and at least one side of the filter material placement layer and the purification material installation part are exposed to the water body, and the filter material placement layer and the purification material installation part both have an opening structure for easy disassembly and installation of materials.

[0009] Preferably, the purification adsorption module comprises a box body with water permeable holes, the front side of the box body has a filter material installation groove, the back side of the box body is divided into multiple purification material installation grooves, the filter material installation groove and the purification material installation groove are both provided with a flip cover plate densely covered with water permeable holes, the flip cover plate is provided with a lock that can be buckled with the box body, the filter material installation groove is loaded with complete filter material, and the purification material installation groove is filled with purification material.

[0010] Preferably, a waterfall air pipe network is installed in the upper part of the tailwater storage and regulating tank, and a vertical pipe is extended downward from the waterfall air pipe network. The lower end of the vertical pipe is supported on the bottom of the waterfall air filling pool. A rotating nozzle and a stirring blade are installed on the vertical pipe. The rotating nozzle has at least 4 spray holes tangentially outward around the rotating trajectory of the rotating nozzle. After the high-pressure gas is ejected from the spray hole, a reverse thrust is formed to cause the rotating nozzle to rotate, thereby driving the stirring blade to rotate and stir, and the stirred water body hits the purification adsorption module more frequently and vigorously.

[0011] Preferably, an aerated filler pool is arranged and connected between the filler denitrification pool and the secondary sedimentation pool.

[0012] Technical effects of the present invention:

[0013] 1. The water inlet treatment system of the present invention fully balances the water temperature through double heat exchange with the tailwater storage and regulating tank and the breeding area, so that the temperature of the water entering the breeding area is consistent with that of the breeding area.

[0014] Second, the purification adsorption module is slidably installed on the inclined dam, and can be driven by a motor to slide up and down, which can fully filter and purify the water in the tailwater storage and regulation tank, making full use of the fact that the water stays in the tailwater storage and regulation tank for a long time, and using the kinetic energy generated when the water is discharged from the breeding area to cause the water to fluctuate and hit the purification adsorption module. It can also solve the disadvantage that the purification adsorption module on the dam is not conducive to cleaning and replacement, and improve the convenience of replacement and cleaning.

[0015] 3. Configure an aeration system with rotating nozzles and stirring blades so that the system can fully stir the water and achieve more complete aeration with less equipment. The water can also be stirred so that it can fully hit the purification adsorption module at the dam. By utilizing the long residence time of water in the tailwater storage and regulating tank, efficient water purification can be achieved, which can reduce the subsequent aeration process. Of course, in order to improve the purification filter, the aeration filler pool in the subsequent process can also be retained. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a system flow diagram of the ecological tailwater treatment system provided in Example 1 of the present invention.

[0017] Figure 2 for Figure 1 Schematic diagram of the structure of the water inlet treatment system combined with the tailwater storage and regulating tank.

[0018] Figure 3 for Figure 1 Schematic diagram of the structure of the tailwater storage and regulating tank with purification adsorption module and waterfall gas system.

[0019] Figure 4 for Figure 3 A schematic cross-sectional view of the structure of the box of the purification adsorption module.

[0020] Figure 5 It is a schematic cross-sectional view of the structure of a purification adsorption module equipped with filter material and purification material.

[0021] Figure 6 for Figure 3 Schematic cross-sectional view of the rotating nozzle of the waterfall gas system. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] See attached Figure 1-6 As shown, the ecological tailwater treatment system provided by the present invention includes a breeding area, a tailwater storage and regulating tank, a purification area and an influent treatment system which are circulated and connected in sequence, the purification area includes a vortex separation tank, an inclined plate sedimentation tank, a brush treatment tank, a filler denitrification tank, a waterfall filler tank, a secondary sedimentation tank, a salt-tolerant plant area, a microalgae purification tank and a shellfish biofilter, the shellfish biofilter is equipped with an external standard discharge outlet, the shellfish biofilter is connected to the influent treatment system, the influent treatment system is connected to the breeding area, the vortex separation tank, the inclined plate sedimentation tank, the brush treatment tank, the filler denitrification tank and the waterfall filler tank are all connected to the fermentation tank, the fermentation tank is connected to the sediment solidification tank, the solidified sediment in the sediment solidification tank is transported to the vegetable planting area as vegetable planting soil, the influent treatment system includes an influent pipe group 1 passing through the tailwater storage and regulating tank, the influent pipe group 1 exchanges heat with the water in the tailwater storage and regulating tank, so that the water temperature in the influent pipe group 1 is balanced.

[0024] Reference Figure 1-2 As shown, in order to improve the heat exchange effect and the consistency of the circulating water inlet and the water in the aquaculture area, the salt-tolerant plant area is respectively connected to a plurality of microalgae purification pools, each of which is connected to the shellfish biofilter, and each of which is connected to the shellfish biofilter through a water flow communication control system to achieve forward and reverse bidirectional water flow control, that is, a forward pipe and a reverse pipe are set at the same time. The water inlet pipe group 1 is immersed in the tailwater storage and regulating tank, and the water inlet pipe group 1 includes a first water inlet end 11 connected to the purification area, a second water inlet end 12 connected to an external water source, and a water outlet end 13 connected to the aquaculture area. The water inlet pipe group 1 includes a pipe with multiple repeated bends, and a pipe bracket 14 is arranged below the water inlet pipe group, and the pipe bracket 14 is fixed to the bottom of the tailwater storage and regulating tank. The water inlet pipe group 1 has a curved heat exchange pipe 15 that penetrates into the water body of the aquaculture area, and the water outlet end 13 is at the end of the curved heat exchange pipe 15 and discharges water to the aquaculture area.

[0025] Reference Figure 3-5As shown, in order to enhance the purification function of the tailwater storage regulating pool, the tailwater storage regulating pool has an obliquely distributed dam 2, and a track 21 is provided along the oblique part of the height direction of the dam surface. A flat cubic purification adsorption module 22 is slidably installed on the track 21, and at least two ropes 23 are connected to the upper ends of the purification adsorption modules 22. The upper ends of the ropes 23 are rotatably connected to the rollers 24. A motor is provided on the top of the dam, and the motor drives the rollers to drive multiple purification adsorption modules 22 to move up and down. The tailwater discharged from the breeding area releases kinetic energy, causing the water body in the tailwater storage regulating pool to fluctuate, and the water body is moved to hit the purification adsorption module 22. A high-pressure water flow pipe group 25 is installed on the top of the dam 2, and the nozzle of the high-pressure water flow pipe group 25 is located above the drainage trough 26. The drainage trough 26 has a filter layer 27. In this embodiment, a transverse hole for replacing the filter layer 27 is opened on the outside of the drainage trough 26, and the outer mouth of the transverse hole is provided with a sealing mechanism. Below the filter layer 27 The drainage pipe 28 is connected to the tailwater storage and regulating tank, and the drainage surface cover 29 with dense permeable holes is covered above the drainage groove 26. The purification adsorption module 22 is pulled upward to reach the top of the dam 2 and is below the water spray port of the high-pressure water flow pipe group 25. The purification adsorption module 22 has a filter material placement layer and a purification material installation part, and the filter material placement layer and the purification material installation part are exposed to the water body at least on one side, and the filter material placement layer and the purification material installation part have an opening structure that is convenient for disassembling and installing materials. In this embodiment, the purification adsorption module 22 includes a box body 221 with water permeable holes, the front of the box body 221 is provided with a filter material installation groove 222, and the back of the box body 221 is divided into a plurality of purification material installation grooves 223, the filter material installation groove 222 and the purification material installation groove 223 are both provided with a flip cover plate densely covered with water permeable holes, the flip cover plate is provided with a lock that can be buckled with the box body, the filter material installation groove 222 is loaded with a complete filter material, and the purification material installation groove is filled with purification material.

[0026] Reference Figure 3 , Figure 6 As shown, in order to improve the aeration and purification effect of the tailwater storage and regulating tank, an aeration pipe network 3 is installed in the upper part of the tailwater storage and regulating tank, and a vertical pipe 31 is extended downward from the aeration pipe network 3. The lower end of the vertical pipe 31 is supported on the bottom of the aeration filling pool. A rotating nozzle 32 and a stirring blade 33 are installed on the vertical pipe 31. The rotating nozzle 32 has at least 4 spray holes 34 tangentially outward around the rotating trajectory of the rotating nozzle. After the high-pressure gas is ejected from the spray hole, a reverse thrust is formed to cause the rotating nozzle 32 to rotate, thereby driving the stirring blade 33 to rotate and stir, and the stirred water body hits the purification adsorption module 22 more frequently and vigorously, thereby improving the purification effect.

[0027] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An ecological tailwater treatment system, characterized by: It includes a breeding area, a tailwater storage and regulating tank, a purification area and an influent treatment system which are circulated and connected in sequence. The purification area includes a vortex separation tank, an inclined plate sedimentation tank, a brush treatment tank, a filler denitrification tank, a waterfall filler tank, a secondary sedimentation tank, a salt-tolerant plant area, a microalgae purification tank and a shellfish biofilter. The shellfish biofilter is equipped with an external discharge outlet that meets the standards. The shellfish biofilter is connected to the influent treatment system, and the influent treatment system is connected to the breeding area. The vortex separation tank, the inclined plate sedimentation tank, the brush treatment tank, the filler denitrification tank and the waterfall filler tank are all connected to the fermentation tank, and the fermentation tank is connected to the sediment solidification tank. The influent treatment system includes an influent pipe group passing through the tailwater storage and regulating tank. The influent pipe group exchanges heat with the water in the tailwater storage and regulating tank to balance the water temperature in the influent pipe group.

2. The ecological tailwater treatment system according to claim 1 is characterized in that: The salt-tolerant plant area is respectively connected to a plurality of microalgae purification pools, each of which is connected to the shellfish biological filter pool, and each of which is connected to the shellfish biological filter pool via a water flow communication control system to achieve forward and reverse bidirectional water flow control.

3. The ecological tailwater treatment system according to claim 1 or 2, characterized in that: The solidified sediment obtained in the sediment solidification pool is transported to the vegetable planting area as vegetable planting soil.

4. The ecological tailwater treatment system according to claim 1 or 2, characterized in that: The water inlet pipe group is immersed in the tailwater storage and regulating tank, and includes a first water inlet end connected to the purification area, a second water inlet end connected to the external water source, and a water outlet end connected to the breeding area. The water inlet pipe group includes a pipe with multiple repeated bends. A pipe bracket is arranged below the water inlet pipe group, and the pipe bracket is fixed to the bottom of the tailwater storage and regulating tank. The water inlet pipe group has a curved heat exchange pipe that penetrates into the water body of the breeding area, and the water outlet end is at the end of the curved heat exchange pipe and discharges water to the breeding area.

5. The ecological tailwater treatment system according to claim 1 or 2, characterized in that: The tailwater storage and regulating pond has an obliquely distributed dam, and there is a track along the oblique part of the height direction of the dam surface. A flat cubic purification adsorption module is slidably installed on the track. At least two ropes are connected to the upper end of the purification adsorption module, and the upper end of the rope is rotatably connected to the roller. A motor is arranged on the top of the dam, and the motor drives the roller to drive multiple purification adsorption modules to move up and down. The tailwater of the breeding area is discharged to release kinetic energy, which causes the water body in the tailwater storage and regulating pond to fluctuate, and the water body is moved to hit the purification adsorption module. A high-pressure water flow pipe group, the nozzle of the high-pressure water flow pipe group is located above the drainage trough, the drainage trough is provided with a filter layer, and a drainage pipe connected to the tailwater storage and regulating tank is provided below the filter layer. The drainage trough is covered with a drainage surface cover densely covered with water-permeable holes. The purification adsorption module is pulled upward to reach the top of the dam and is located below the water spray port of the high-pressure water flow pipe group. The purification adsorption module has a filter material placement layer and a purification material installation portion, and at least one side of the filter material placement layer and the purification material installation portion are exposed to the water body, and the filter material placement layer and the purification material installation portion both have an opening structure for easy disassembly and installation of materials.

6. The ecological tailwater treatment system according to claim 4 is characterized in that: The tailwater storage and regulating pond has an obliquely distributed dam, and there is a track along the oblique part of the height direction of the dam surface. A flat cubic purification adsorption module is slidably installed on the track. At least two ropes are connected to the upper end of the purification adsorption module, and the upper end of the rope is rotatably connected to the roller. A motor is arranged on the top of the dam, and the motor drives the roller to drive multiple purification adsorption modules to move up and down. The tailwater of the breeding area is discharged to release kinetic energy, which causes the water body in the tailwater storage and regulating pond to fluctuate, and the water body is moved to hit the purification adsorption module. A high-pressure water flow pipe group, the nozzle of the high-pressure water flow pipe group is located above the drainage trough, the drainage trough is provided with a filter layer, and a drainage pipe connected to the tailwater storage and regulating tank is provided below the filter layer. The drainage trough is covered with a drainage surface cover densely covered with water-permeable holes. The purification adsorption module is pulled upward to reach the top of the dam and is located below the water spray port of the high-pressure water flow pipe group. The purification adsorption module has a filter material placement layer and a purification material installation portion, and at least one side of the filter material placement layer and the purification material installation portion are exposed to the water body, and the filter material placement layer and the purification material installation portion both have an opening structure for easy disassembly and installation of materials.

7. The ecological tailwater treatment system according to claim 5 is characterized by: The purification adsorption module includes a box body with water permeable holes, a filter material installation groove on the front of the box body, and a plurality of purification material installation grooves divided on the back of the box body. The filter material installation groove and the purification material installation groove are both provided with a flip cover plate densely covered with water permeable holes, and the flip cover plate is provided with a lock that can be buckled with the box body. The filter material installation groove is loaded with a complete package of filter material, and the purification material installation groove is filled with purification material.

8. The ecological tailwater treatment system according to claim 7 is characterized in that: A waterfall air pipe network is installed in the upper part of the tailwater storage and regulating tank, and a vertical pipe is extended downward from the waterfall air pipe network. The lower end of the vertical pipe is supported on the bottom of the waterfall air filling pool. A rotating nozzle and a stirring blade are installed on the vertical pipe. The rotating nozzle has at least 4 spray holes tangentially outward around the rotating trajectory of the rotating nozzle. After the high-pressure gas is ejected from the spray hole, a reverse thrust is formed to cause the rotating nozzle to rotate, thereby driving the stirring blade to rotate and stir, and the stirred water body hits the purification adsorption module more frequently and vigorously.

9. The ecological tailwater treatment system according to claim 1 or 2, characterized in that: A waterfall gas filler pool is arranged and connected between the filler denitrification pool and the secondary sedimentation pool.

10. The ecological tailwater treatment system according to claim 8 is characterized by: A waterfall gas filler pool is arranged and connected between the filler denitrification pool and the secondary sedimentation pool.

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