High-place pond culture tail water treatment system

Abstract

The invention aims to provide the high-position pond culture tail water treatment system which can simultaneously treat tail water of a plurality of high-position culture ponds and intercept and collect dead shrimp shells, and can effectively avoid generation of black and odorous water. The system comprises a high-position culture pond, a tail water extraction assembly connected with the high-position culture pond, a shrimp shell interception and collection assembly communicated with the tail water extraction assembly, a sewage discharge well communicated with the tail water extraction assembly and the shrimp shell interception and collection assembly and used for collecting tail water, and a collection and treatment assembly communicated with the sewage discharge well. The shrimp shell interception and collection assembly is provided with a water return pipe connected with the collection and treatment assembly, the output end of the protein separation and treatment assembly is provided with a main discharge pipe, and the main discharge pipe is provided with a water return pipe connected with the collection and treatment assembly. And the main discharge pipe is communicated with the collecting and treating assembly. The system is applied to the technical field of higher-place pond culture tail water treatment systems.

Description

Technical Field

[0001] The present invention relates to the technical field of high-level pond aquaculture tail water treatment systems, and particularly relates to a high-level pond aquaculture tail water treatment system. Background Art

[0002] Currently, high-level pond aquaculture of fish and shrimp usually adopts a single-pond structure. Due to the high aquaculture density and large amount of feed in high-level ponds, a large amount of residual feed and feces will be generated during the aquaculture process. Especially in the middle and late stages of cultivation, as the fish and shrimp grow, the feeding and excrement of the fish and shrimp increase significantly, the pollution of the aquaculture water body becomes more serious, the water quality indicators decline, and the water pollution causes the outbreak of fish and shrimp diseases, ultimately affecting the aquaculture yield and success rate.

[0003] In the traditional high-level pond aquaculture mode, the water quality indicators of the aquaculture water are maintained by the method of draining sewage and changing water through unplugging pipes every day to meet the basic needs of the aquaculture organisms. The method of draining sewage and changing water through unplugging pipes is carried out 2-3 times a day. Since the diameter of the bottom drain pipe for emptying the pond is large, the distance from the center of the pond to the unplugging sewage outlet is far, and the interval time between two unplugging sewage operations is long. Therefore, the aquaculture water in the bottom drain pipe is in a non-flowing state. Due to the too long anaerobic time, when unplugging the sewage, a large amount of black and stinky water and dead shrimp shells are discharged from the bottom drain pipe of the pond. Since the water quality indicators of the black and stinky sewage are extremely poor, it brings great difficulty to the treatment of the aquaculture tail water. The black and stinky sewage and dead shrimp shells are discharged into the offshore waters, resulting in the blackening and stinking of the beach, and the serious eutrophication of the offshore waters, which has a major impact on environmental protection and brings extremely high difficulty to the tail water treatment. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to find a method to solve the generation of black and stinky water according to the reasons for the generation of black and stinky water, and to prevent the generation of black and stinky water and the discharge of dead shrimp shells from the source, and to provide a high-level pond aquaculture tail water treatment system that can simultaneously treat the tail water of multiple high-level aquaculture ponds and intercept and collect dead shrimp shells, and can effectively prevent the generation of black and stinky water.

[0005] The technical solution adopted by the present invention is: The present invention includes a high-level aquaculture pond, a tail water extraction component connected to the high-level aquaculture pond, a shrimp shell interception and collection component communicated with the tail water extraction component, a sewage well communicated with the tail water extraction component and the shrimp shell interception and collection component for collecting tail water, a collection and treatment component communicated with the sewage well, a three-oxygen microorganism denitrification and phosphorus removal treatment component connected to the collection and treatment component, and a protein separation treatment component connected to the output end of the three-oxygen microorganism denitrification and phosphorus removal treatment component. The shrimp shell interception and collection component is provided with a return pipe connected to the collection and treatment component, and the output ends of the protein separation treatment component are all provided with main drain pipes, and the main drain pipes are communicated with the collection and treatment component.

[0006] Furthermore, the tail water extraction component includes an anti-escape net, a bottom drain and sewage pipe for the pond, a draw-off sewage pipe, a water suction pipe, and a black and odorous water treatment pump. The anti-escape net is arranged at the bottom of the high-level aquaculture pond. One end of the bottom drain and sewage pipe for the pond is communicated with the anti-escape net. The draw-off sewage pipe is detachably connected to the other end of the bottom drain and sewage pipe for the pond. A tee joint is formed at the lower part of the draw-off sewage pipe. One end of the water suction pipe is connected to the tee joint, and the other end of the water suction pipe is connected to the water inlet end of the black and odorous water treatment pump. The water outlet end of the black and odorous water treatment pump is communicated with the shrimp shell interception and collection component.

[0007] Furthermore, a one-way check valve is arranged on one side of the water suction pipe close to the tee joint, and a water diversion switch valve is arranged on one side of the water suction pipe close to the black and odorous water treatment pump.

[0008] Furthermore, the shrimp shell interception and collection component includes a shrimp shell interception device, a first filter grille, a second filter grille, a drain valve, and a collection port. The shrimp shell interception device is arranged at the upper part. The first filter grille is inclined and arranged at the upper part of the shrimp shell interception device. The second filter grille is arranged at the bottom of the shrimp shell interception device. The first filter grille and the second filter grille cooperate to form a material interception space for intercepting dead shrimp shells. The drain valve and the collection port are both arranged at the bottom of the shrimp shell interception device. The shrimp shell interception device is provided with a water inlet and a water outlet. The water inlet is communicated with the tail water extraction component, and the water outlet is communicated with the return water pipe.

[0009] Furthermore, the protein separation and treatment component includes a treatment tank, a first water inlet component, a double-layer aeration and oxygenation component, an ozone disinfection device, and a foam discharge head. The first water inlet component is arranged at the lower part of the treatment tank. The suction end of the first water inlet component is connected to the water outlet of the three-oxygen microorganism denitrification and phosphorus removal treatment component. The double-layer aeration and oxygenation component is arranged at the middle and lower part of the treatment tank. The ozone disinfection device is fixedly connected to the treatment tank. The output end of the ozone disinfection device is arranged above the double-layer aeration and oxygenation component. The foam discharge head is arranged at the top of the treatment tank. An overflow water tank is formed on one side of the treatment tank, and the overflow water tank is communicated with the main drain pipe.

[0010] Furthermore, the three-oxygen microbial denitrification and phosphorus removal treatment component includes a processor and a vortex sewage collection component, a facultative oxygen reaction zone, an aerobic reaction zone, an anaerobic reaction zone, a three-oxygen aeration component, an outflow water tank, a floating bed biological filter, and an aeration and tumbling component arranged inside the processor. A second water pumping component connected to the collection and treatment component is arranged on one side of the vortex sewage collection component. The three-oxygen aeration component is arranged at the bottom of the processor. First and second sewage discharge ports for discharging sediment and sludge are formed on the left and right sides at the lower end of the processor. The outflow water tank is arranged at the upper part of the processor and is communicated with the protein separation treatment component. The floating bed biological filter is arranged at the upper part of the processor. The aeration and tumbling component is arranged between the floating bed biological filter and the vortex sewage collection component.

[0011] Furthermore, the collection and treatment component includes a collection pond and a dead shrimp and shrimp shell collection net bag. One side of the collection pond is communicated with the sewage well through a main sewage pipe. The dead shrimp and shrimp shell collection net bag is arranged at the outflow end of the main sewage pipe. The other side of the collection pond is communicated with the main drainage pipe. Aquatic plants for absorbing and adsorbing impurities in the tail water are arranged in the collection pond.

[0012] Furthermore, the collection and treatment component includes a cyclone sewage collection well, a concentrated collection pond, a tail water collection pond, and a water level balance pond. The cyclone sewage collection well is communicated with the sewage well. The bottom of the cyclone sewage collection well is communicated with the concentrated collection pond through a sludge collection pipe. A detachable middle and lower layer drain pipe is arranged in the middle of the cyclone sewage collection well. The middle and lower layer drain pipe is connected to one end of the tail water collection pond. The other end of the tail water collection pond is communicated with the main drainage pipe. The water level balance pond is arranged on one side of the protein separation treatment component. The upper part of the cyclone sewage collection well is communicated with the water level balance pond through an overflow pipe.

[0013] Furthermore, this process flow includes:

[0014] When the system is initially started, the tail water extraction component extracts tail water from the bottom of the high-level aquaculture pond, intercepting dead shrimp and shrimp shells in the shrimp shell interception and collection component. The aquaculture tail water enters the sewage well and then enters the collection and treatment component along the sewage well.

[0015] When water needs to be drained and replaced during the aquaculture process, the draw-off sewage pipe is lifted upward. The aquaculture tail water in the high-level aquaculture pond is discharged along the bottom drain sewage pipe and flows into the sewage well, and then enters the collection and treatment component from the sewage well. After the tail water enters the collection and treatment component, it is pretreated by sedimentation filtration, filter-feeding fish purification, and aquatic plants.

[0016] The protein separation treatment component and the three-oxygen microbial denitrification and phosphorus removal treatment component extract the pretreated tail water from the collection and treatment component.

[0017] The three-oxygen microorganism denitrification and phosphorus removal treatment component filters and ultraviolet disinfects the tail water by three-oxygen microorganisms, and the treated tail water flows into the protein separation treatment component;

[0018] The protein separation treatment component conducts mechanical filtration, foam separation and ozone disinfection on the tail water, and the treated tail water is discharged up to standard after the treatment.

[0019] Furthermore, the precipitation filtration of the collection and treatment component further includes the following technological processes:

[0020] The swirl sewage collection well accesses the tail water, and the tail water swirls and collects sewage in the swirl sewage collection well. The heavy sludge deposits at the bottom of the swirl sewage collection well, and the upper clarified tail water enters the water level balance pool along the overflow pipe. After being pumped to the microorganism denitrification and phosphorus removal filter for treatment by a water pump, it enters the protein separator for foam separation and ozone disinfection, and the treated tail water is discharged up to standard after the treatment.

[0021] The beneficial effects of the present invention are as follows: Since the present invention pumps the aquaculture tail water in the bottom drain sewage pipe of the pond through the black and odorous water treatment pump, the tail water in the bottom drain sewage pipe is continuously discharged and flows, effectively preventing the generation of black and odorous sewage during the initial sewage discharge of the high-level pond; through the shrimp shell interception and collection component, the dead shrimp and shrimp shells in the tail water pumped by the black and odorous water treatment pump are intercepted and collected, removing the dead shrimp and shrimp shells in the tail water; the tail water without dead shrimp, shrimp shells and black and odorous water is transported to the tail water collection and treatment pond through the main sewage well pipe for processes such as sedimentation filtration of residual baits and feces, purification by filter-feeding fish, absorption and adsorption by aquatic plants, three-oxygen microorganism denitrification and phosphorus removal treatment, foam separation, and ozone disinfection, and then discharged up to standard. Description of the Drawings

[0022] Figure 1 is the process flow chart of Embodiment 1 of the present invention;

[0023] Figure 2 is the structural schematic diagram of Embodiment 1 of the present invention;

[0024] Figure 3 is the working principle diagram of Embodiment 1 of the present invention;

[0025] Figure 4 is Figure 3 the partial enlarged view of part A in

[0026] Figure 5 is Figure 3 the partial enlarged view of part B in

[0027] Figure 6 is Figure 3 the partial enlarged view of part C in

[0028] Figure 7It is a schematic structural diagram of the protein separation and treatment component of the present invention;

[0029] Figure 8 It is a schematic structural diagram of the shrimp shell interception and collection component of the present invention;

[0030] Figure 9 It is a process flow chart of the second embodiment of the present invention;

[0031] Figure 10 It is a top view of the second embodiment of the present invention;

[0032] Figure 11 It is a schematic structural diagram of the second embodiment of the present invention;

[0033] Figure 12 It is Figure 11 a partial enlarged view of part D in

[0034] In the figure: 1, high-level aquaculture pond; 2, tail water extraction component; 21, anti-escape net; 22, bottom drain and sewage discharge pipe of the pond; 23, pull-out pipe for sewage discharge; 24, water suction pipe; 25, black and odorous water treatment pump; 26, three-way joint; 27, one-way check valve; 28, water diversion switch valve; 3, shrimp shell interception and collection component; 31, shrimp shell interception device; 32, first filter grid; 33, drain valve; 34, collection port; 35, water inlet; 36, water outlet; 37, exhaust valve; 38, second filter grid; 4, sewage well; 5, collection and treatment component; 51, collection pond; 52, dead shrimp and shrimp shell collection net bag; 53, swirling sewage collection well; 54, concentrated collection pond; 55, tail water collection pond; 56, water level balance pond; 57, overflow pipe; 58, middle and lower layer drain pipe; 6, protein separation and treatment component; 61, treatment tank; 62, first water inlet component; 63, double-layer aeration and oxygenation component; 64, foam discharge head; 65, ozone disinfection device; 66, overflow water tank; 7, three-oxygen microorganism denitrification and phosphorus removal treatment component; 701, processor; 702, vortex sewage collection component; 703, facultative oxygen reaction zone; 704, aerobic reaction zone; 705, anaerobic reaction zone; 706, three-oxygen aeration component; 707, second water pumping component; 708, outflow water tank; 709, floating bed biological filtration; 710, aeration and tumbling component; 8, main drain pipe; 9, return water pipe. Detailed implementation manners

[0035] Embodiment 1

[0036] As Figures 1 to 8As shown in the figure, in this embodiment, the present invention includes a high-level aquaculture pond 1, a tail water extraction component 2 connected to the high-level aquaculture pond 1, a shrimp shell interception and collection component 3 communicated with the tail water extraction component 2, a sewage well 4 communicated with the tail water extraction component 2 and the shrimp shell interception and collection component 3 for collecting tail water, a collection and treatment component 5 communicated with the sewage well 4, a three-oxygen microbial denitrification and phosphorus removal treatment component 7 connected to the collection and treatment component 5, and a protein separation treatment component 6 connected to the output end of the three-oxygen microbial denitrification and phosphorus removal treatment component 7. The shrimp shell interception and collection component 3 is provided with a return pipe 9 connected to the collection and treatment component 5. The output ends of the protein separation treatment component 6 are all provided with main drain pipes 8, and the main drain pipes 8 are communicated with the collection and treatment component 5;

[0037] The drainage position of the collection and treatment component 5 is lower than the lowest water level line of the high-level aquaculture pond 1. The sewage well 4 is provided with an emptying pipe communicated with the collection and treatment component 5 for discharging tail water. The water outlet end of the emptying pipe is located in the upper part of the collection and treatment component 5. The collection and treatment component 5 conditions the water quality of the aquaculture tail water through filter-feeding fish and aquatic plants, and realizes sedimentation filtration and biological water conditioning in the collection and treatment component 5;

[0038] The outflow end of the return pipe 9 is communicated with the sewage well 4, and is used for refluxing the black and stinky water or aquaculture tail water for filtering dead shrimp and shrimp shells;

[0039] The water level height of the three-oxygen microbial denitrification and phosphorus removal treatment component 7 is greater than the water level height of the protein separation treatment component 6, so that the tail water can flow into the protein separation treatment component 6 under the pressure of the water level difference, avoiding secondary water pumping and saving the system operation energy consumption;

[0040] The aquaculture tail water in the draw-down sewage pipe 23 is extracted by the black and stinky water treatment pump 25, so that the tail water in the draw-down sewage pipe 23 keeps flowing. By using the principle that flowing water does not go bad, the generation of black and stinky tail water in the bottom emptying sewage pipe 22 of the high-level aquaculture pond 1 is effectively avoided. Through the shrimp shell interception and collection component 3, the shrimp shells and dead shrimps in the discharged tail water are in the shrimp shell interception and collection component 3, and the shrimp shells are collected through the collection port 34, removing the dead shrimps and shrimp shells in the treated tail water;

[0041] The protein separation treatment component adopts a double-layer aeration and oxygenation member 63 to form dense foam. The foam separation process is to remove and separate the water-soluble organic matter, suspended matter, and fine particulate matter in the aquaculture tail water after solid-liquid separation. The aquaculture tail water after multi-stage treatment is disinfected by ozone and then discharged up to standard, achieving the purpose of energy conservation, emission reduction, and environmental protection promotion.

[0042] In this embodiment, the tail water extraction assembly 2 includes an anti-escape net 21, a bottom drain and sewage pipe 22 of the pond, a draw-off sewage pipe 23, a water extraction pipe 24, and a black and odorous water treatment pump 25. The anti-escape net 21 is arranged at the bottom of the high-level aquaculture pond 1. One end of the bottom drain and sewage pipe 22 of the pond is communicated with the anti-escape net 21. The draw-off sewage pipe 23 is detachably connected to the other end of the bottom drain and sewage pipe 22 of the pond. A tee 26 is formed at the lower part of the draw-off sewage pipe 23. One end of the water extraction pipe 24 is connected to the tee 26. The other end of the water extraction pipe 24 is connected to the water inlet end of the black and odorous water treatment pump 25. The water outlet end of the black and odorous water treatment pump 25 is communicated with the shrimp shell interception and collection assembly 3;

[0043] The height of the draw-off sewage pipe 23 is greater than the height of the highest water level line of the high-level aquaculture pond 1, and the water level of the high-level aquaculture pond 1 is kept stable by the principle of communicating vessels.

[0044] In this embodiment, a one-way check valve 27 is arranged on the side of the water extraction pipe 24 close to the tee 26, and a water diversion switch valve 28 is arranged on the side of the water extraction pipe 24 close to the black and odorous water treatment pump 25.

[0045] In this embodiment, the shrimp shell interception and collection assembly 3 includes a shrimp shell interception device 31, a first filter grille 32, a second filter grille 38, a drain valve 33, and a collection port 34. The shrimp shell interception device 31 is arranged at the upper part. The first filter grille 32 is obliquely arranged at the upper part of the shrimp shell interception device 31. The second filter grille 38 is arranged at the bottom of the shrimp shell interception device 31. The first filter grille 32 and the second filter grille 38 cooperate to form a material interception space for intercepting dead shrimp and shrimp shells. Both the drain valve 33 and the collection port 34 are arranged at the bottom of the shrimp shell interception device 31. The shrimp shell interception device 31 is provided with a water inlet 35 and a water outlet 36. The water inlet 35 is communicated with the tail water extraction assembly 2, and the water outlet 36 is communicated with the return water pipe 9;

[0046] The dead shrimp and shrimp shells are automatically separated by the first filter grille 32 and the second filter grille 38. A special collection port 34 for dead shrimp and shrimp shells is arranged below the shrimp shell interception device 31. The dead shrimp and shrimp shells in the bottom drain and sewage pipe 22 of the pond are automatically isolated and collected into the device. The collection port 34 can be opened to automatically discharge and collect. The overall structure is compact and easy to use. Since the dead shrimp and shrimp shells seriously affect the water quality after rotting, increasing the treatment pressure and difficulty for tail water treatment, the shrimp shell interception and collection assembly 3 realizes the real-time collection of dead shrimp and shrimp shells, avoiding the dead shrimp and shrimp shells from being discharged into the collection and treatment assembly 5 and depositing and rotting, causing further pollution;

[0047] The water inlet 35 is arranged at the upper end of the material cutting space, the collection port 34 is arranged at the lower end of the material cutting space, the water outlet is arranged above the first filter grid 32, the drain valve is arranged below the second filter grid 38, and an exhaust valve 37 is arranged at the top of the shrimp shell interception device 31.

[0048] In this embodiment, the protein separation and treatment component 6 includes a treatment tank 61, a first water inlet part 62, a double-layer aeration and oxygenation part 63, an ozone disinfection device 65 and a foam discharge head 64. The first water inlet part 62 is arranged at the lower part of the treatment tank 61. The suction end of the first water inlet part 62 is connected to the water outlet of the three-oxygen microorganism denitrification and phosphorus removal treatment component 7. The double-layer aeration and oxygenation part 63 is arranged in the middle and lower part of the treatment tank 61. The ozone disinfection device 65 is fixedly connected to the treatment tank 61. The output end of the ozone disinfection device 65 is arranged above the double-layer aeration and oxygenation part 63. The foam discharge head 64 is arranged at the top of the treatment tank 61. An overflow water tank 66 is formed on one side of the treatment tank 61. The overflow water tank 66 is communicated with the main drain pipe 8.

[0049] A collection pool for foam collection and bottom sludge is arranged around the treatment tank 61. A sewage discharge switch is arranged at the bottom of the treatment tank 61 for regularly discharging the particulate matters accumulated at the bottom of the treatment tank 61. A double-layer aeration and oxygenation part 63 is used to form dense foam, and the foam separation method is adopted to remove and separate water-soluble organic matters, suspended matters and fine particulate matters in the aquaculture tail water after solid-liquid separation. For the aquaculture tail water after multi-stage treatment, ozone is added above the aeration and oxygenation component through the ozone disinfection device 65. After sterilization and disinfection by ozone, the content of harmful viruses and bacteria in the discharged tail water is reduced. The double-layer aeration and oxygenation part 63 is used to improve the aeration efficiency. The foam separation efficiency is doubled for each additional layer of aeration pipe. The double-layer arranged aeration and oxygenation part 63 shares the barrel body of the original equipment, and the cost only increases by about 20%. The formed foam has a higher density, and the foam separation efficiency is doubled, further improving the space utilization rate.

[0050] In this embodiment, the three-oxygen microbial denitrification and phosphorus removal treatment component 7 includes a processor 701 and a vortex sewage collection member 702, facultative oxygen reaction zone 703, aerobic reaction zone 704, anaerobic reaction zone 705, three-oxygen aeration member 706, outflow water tank 708, floating bed biological filter 709 and aeration tumbling member 710 disposed within the processor 701. A second water pumping member 707 connected to the collection and treatment component 5 is disposed on one side of the vortex sewage collection member 702. The three-oxygen aeration member 706 is disposed at the bottom of the processor 701. First and second sewage outlets for discharging sedimented sludge are formed on the left and right sides at the lower end of the processor 701. The outflow water tank 708 is disposed at the upper part of the processor 701. The outflow water tank 708 is communicated with the protein separation treatment component 6. The floating bed biological filter 709 is disposed at the upper part of the processor 701. The aeration tumbling member 710 is disposed between the floating bed biological filter 709 and the vortex sewage collection member 702;

[0051] The floating bed biochemical treatment 709 sets up a floating bed and uses floating biological fillers to provide a habitat environment for microorganisms, achieving the purpose of purifying water quality and improving the ecology, and microorganisms for denitrification and phosphorus removal treatment can be put in;

[0052] The vortex sewage collection member 702 is used to mechanically filter the incoming tail water. The incoming tail water forms a water flow vortex, and the heavier residual baits, feces and suspended matters in the water body are deposited at the bottom of the processor 701. The residual baits and feces deposited at the bottom are discharged through the first and second sewage outlets. The facultative oxygen reaction zone 703, aerobic reaction zone 704, anaerobic reaction zone 705 cooperate with the three-oxygen aeration member 706 to carry out nitrification and denitrification reactions on the incoming water body, further reducing the ammonia nitrogen and inorganic salt elements in the tail water, ensuring that the discharged tail water will not affect the external ecology. After the tail water passes through the facultative oxygen reaction zone 703, aerobic reaction zone 704, anaerobic reaction zone 705 and cooperates with the three-oxygen aeration member 706, it enters the protein separation treatment component 6 through the outflow water tank 708 for further filtration.

[0053] In this embodiment, the collection and treatment component 5 includes a collection pool 51 and a dead shrimp and shrimp shell collection net bag 52. One side of the collection pool 51 is communicated with the sewage well 4 through a main sewage pipe. The dead shrimp and shrimp shell collection net bag 52 is disposed at the outflow end of the main sewage pipe. The other side of the collection pool 51 is communicated with the main drain pipe 8. The collection pool 51 is provided with aquatic plants for absorbing and adsorbing impurities in the tail water.

[0054] In this embodiment, the process includes the following steps:

[0055] When the system is started for the first time, the tail water extraction component 2 extracts tail water from the bottom of the high-level aquaculture pond 1, intercepting the dead shrimp shells in the shrimp shell interception and collection component 3, and the aquaculture tail water enters the sewage collection well 4 and then enters the collection and treatment component 5 along the sewage collection well 4;

[0056] When water needs to be drained and replaced during the aquaculture process, the drain pipe 23 is lifted upward, and the aquaculture tail water in the high-level aquaculture pond 1 is discharged along the bottom drain pipe 22 of the pond and flows into the sewage collection well 4, and then enters the collection and treatment component 5 from the sewage collection well 4. After the tail water enters the collection and treatment component 5, the dead shrimp shells are collected by the dead shrimp shell collection net bag 52 and flow into the tail water collection pond 51, and the tail water is pretreated through filter-feeding fish, aquatic plants, sediment filtration and biological water conditioning;

[0057] The protein separation and treatment component 6 and the tri-oxygen microbial denitrification and phosphorus removal treatment component 7 extract the pretreated tail water from the collection and treatment component 5;

[0058] The tri-oxygen microbial denitrification and phosphorus removal treatment component 7 performs mechanical filtration and tri-oxygen microbial filtration on the tail water, and the treated tail water flows into the protein separation and treatment component 6;

[0059] The protein separation and treatment component 6 performs foam separation and ozone disinfection on the tail water, and the treated tail water is discharged up to standard.

[0060] Among them, the black and odorous water treatment pump works 8 times a day, each time pumping water for 0.5 hours, and the interval between two adjacent water pumpings is 2.5 hours. Since the water in the pipe is pumped regularly according to the setting of the sewage pipe, the water in the pipe flows regularly, preventing the generation of black and odorous water in the high-level pond, avoiding the generation of black and odorous water. When sewage discharge and water replacement are required during the aquaculture process, the drain pipe sewage discharge method can still be used.

[0061] Embodiment 2

[0062] As Figures 9 to 12 shown, the difference between this embodiment and Embodiment 1 is that the collection and treatment component 5 includes a cyclone sewage collection well 53, a concentration collection pond 54, a tail water collection pond 55 and a water level balance pond 56. The cyclone sewage collection well 53 is connected to the sewage well 4, the bottom of the cyclone sewage collection well 53 is connected to the concentration collection pond 54 through a silt collection pipe, a detachable middle and lower layer drain pipe 58 is arranged in the middle of the cyclone sewage collection well 53, the middle and lower layer drain pipe 58 is connected to one end of the tail water collection pond 55, the other end of the tail water collection pond 55 is connected to the main drain pipe 8, the water level balance pond 56 is arranged on one side of the protein separation and treatment component 6, and the upper part of the cyclone sewage collection well 53 is connected to the water level balance pond 56 through an overflow pipe 57.

[0063] In this embodiment, the process includes the following steps:

[0064] When the system is initially started, the tail water extraction component 2 extracts tail water from the bottom of the high-level aquaculture pond 1, intercepting the dead shrimp shells in the shrimp shell interception and collection component 3, and the aquaculture tail water enters the sewage collection well 4 and then enters the cyclone sewage collection well 53 along the sewage collection well 4;

[0065] During the aquaculture process when water needs to be drained and replaced, the pull-up drain pipe 23 is lifted upwards, and the tail water in the high-level aquaculture pond 1 is poured into the sewage collection well 4 along the bottom drain pipe 22 of the pond and enters the cyclone sewage collection well 53 from the sewage collection well 4. After the tail water is cyclone-collected and sewage-collected in the cyclone sewage collection well, large particulate matters are cyclone-collected at the bottom of the cone, and the upper clarified tail water enters the water level balance pond 56 along the overflow pipe 57, and is pumped to the tri-oxygen microorganism denitrification and phosphorus removal component 7 and the protein separator 6 by a treatment pump for microorganism and foam separation and ozone disinfection treatment;

[0066] Regularly open the silt collection pipe to drain the silt at the bottom of the cyclone sewage collection well 53 into the sewage concentration collection pond 54;

[0067] The protein separation treatment component 6 and the tri-oxygen microorganism denitrification and phosphorus removal treatment component 7 extract the pretreated tail water from the collection and treatment component 5;

[0068] The tri-oxygen microorganism denitrification and phosphorus removal treatment component 7 performs mechanical filtration and tri-oxygen microorganism filtration on the tail water, and the treated tail water flows into the protein separation treatment component 6;

[0069] The protein separation treatment component 6 performs foam separation and ozone disinfection on the tail water, and the treated tail water is discharged up to standard after treatment;

[0070] Among them, the black and odorous water treatment pump works 8 times a day, each time pumping water for 0.5 hours, and the interval between two adjacent water pumpings is 2.5 hours, which can avoid the generation of black and odorous water. Drainage can be carried out by pulling out the pipe for drainage, and the discharged aquaculture water is collected by the shrimp shell interception and collection component 3 to intercept the dead shrimp shells.

[0071] Although the embodiments of the present invention are described with actual solutions, they do not constitute a limitation to the meaning of the present invention. For those skilled in the art, modifications to its implementation solutions according to this specification and combinations with other solutions are obvious.

Claims

1. A high-level pond aquaculture tail water treatment system, characterized in that: It includes a high-level aquaculture pond (1), a tail water extraction component (2) connected to the high-level aquaculture pond (1), a shrimp shell interception and collection component (3) communicated with the tail water extraction component (2), a sewage well (4) communicated with the tail water extraction component (2) and the shrimp shell interception and collection component (3) for collecting tail water, a collection and treatment component (5) communicated with the sewage well (4), a three-oxygen microorganism denitrification and phosphorus removal treatment component (7) connected to the collection and treatment component (5), and a protein separation treatment component (6) connected to the output end of the three-oxygen microorganism denitrification and phosphorus removal treatment component (7). The shrimp shell interception and collection component (3) is provided with a return water pipe (9) connected to the collection and treatment component (5). The output ends of the protein separation treatment component (6) are both provided with main discharge pipes (8), and the main discharge pipes (8) are communicated with the collection and treatment component (5).

2. The high-level pond aquaculture tail water treatment system according to claim 1, wherein: The tail water extraction component (2) includes an anti-escape net (21), a bottom drain sewage pipe (22), a draw-off sewage pipe (23), a water extraction pipe (24), and a black and odorous water treatment pump (25). The anti-escape net (21) is arranged at the bottom of the high-level aquaculture pond (1). One end of the bottom drain sewage pipe (22) is communicated with the anti-escape net (21). The draw-off sewage pipe (23) is detachably connected to the other end of the bottom drain sewage pipe (22). A tee joint (26) is formed at the lower part of the draw-off sewage pipe (23). One end of the water extraction pipe (24) is connected to the tee joint (26), and the other end of the water extraction pipe (24) is connected to the water inlet end of the black and odorous water treatment pump (25). The water outlet end of the black and odorous water treatment pump (25) is communicated with the shrimp shell interception and collection component (3).

3. The high-level pond aquaculture tail water treatment system according to claim 2, characterized in that: A one-way check valve (27) is arranged on one side of the water extraction pipe (24) close to the tee joint (26), and a water diversion switch valve (28) is arranged on one side of the water extraction pipe (24) close to the black and odorous water treatment pump (25).

4. A high-level pond aquaculture tail water treatment system according to claim 1, characterized in that: The shrimp shell interception and collection component (3) includes a shrimp shell interception device (31), a first filter grid (32), a second filter grid (38), a drain valve (33), and a collection port (34). The shrimp shell interception device (31) is arranged at the upper part. The first filter grid (32) is inclined and arranged at the upper part of the shrimp shell interception device (31). The second filter grid (38) is arranged at the bottom of the shrimp shell interception device. The first filter grid (32) and the second filter grid (38) cooperate to form a material interception space for intercepting dead shrimp shells. The drain valve (33) and the collection port (34) are both arranged at the bottom of the shrimp shell interception device (31). The shrimp shell interception device (31) is provided with a water inlet (35) and a water outlet (36). The water inlet (35) is communicated with the tail water extraction component (2), and the water outlet (36) is communicated with the return water pipe (9).

5. The high-level pond aquaculture tail water treatment system according to claim 1, wherein: The protein separation and treatment component (6) includes a treatment tank (61), a first water inlet component (62), a double-layer aeration and oxygenation component (63), an ozone disinfection device (65), and a foam discharge head (64). The first water inlet component (62) is arranged at the lower part of the treatment tank (61). The suction end of the first water inlet component (62) is connected to the water outlet of the three-oxygen microorganism denitrification and phosphorus removal treatment component (7). The double-layer aeration and oxygenation component (63) is arranged at the middle and lower part of the treatment tank (61). The ozone disinfection device (65) is fixedly connected to the treatment tank (61). The output end of the ozone disinfection device (65) is arranged above the double-layer aeration and oxygenation component (63). The foam discharge head (64) is arranged at the top of the treatment tank (61). An overflow water tank (66) is formed on one side of the treatment tank (61). The overflow water tank (66) is communicated with the main drain pipe (8).

6. The high-level pond aquaculture tail water treatment system according to claim 1, characterized in that: The three-oxygen microorganism denitrification and phosphorus removal treatment component (7) includes a processor (701) and a vortex sewage collection component (702), a facultative oxygen reaction zone (703), an aerobic reaction zone (704), an anaerobic reaction zone (705), a three-oxygen aeration component (706), an outflow water tank (708), a floating bed biological filter (709), and an aeration and tumbling component (710) arranged inside the processor (701). A second water pumping component (707) connected to the collection and treatment component (5) is arranged on one side of the vortex sewage collection component (702). The three-oxygen aeration component (706) is arranged at the bottom of the processor (701). A first sewage outlet and a second sewage outlet for discharging sediment and sludge are formed on the left and right sides at the lower end of the processor (701). The outflow water tank (708) is arranged at the upper part of the processor (701). The outflow water tank (708) is communicated with the protein separation and treatment component (6). The floating bed biological filter (709) is arranged at the upper part of the processor (701). The aeration and tumbling component (710) is arranged between the floating bed biological filter (709) and the vortex sewage collection component (702).

7. The tail water treatment system for high-level pond aquaculture according to claim 1, characterized in that: The collection and treatment component (5) includes a collection pool (51) and a dead shrimp and shrimp shell collection net bag (52). One side of the collection pool (51) is communicated with the sewage well (4) through a main sewage pipe. The dead shrimp and shrimp shell collection net bag (52) is arranged at the outflow end of the main sewage pipe. The other side of the collection pool (51) is communicated with the main drain pipe (8). Aquatic plants for absorbing and adsorbing impurities in the tail water are arranged in the collection pool (51).

8. The tail water treatment system for high-level pond aquaculture according to claim 1, characterized in that: The collection and treatment component (5) includes a cyclone sewage collection well (53), a concentration collection tank (54), a tail water collection tank (55), and a water level balance tank (56). The cyclone sewage collection well (53) is communicated with the sewage well (4). The bottom of the cyclone sewage collection well (53) is communicated with the concentration collection tank (54) through a silt collection pipe. A detachable middle and lower layer drain pipe (58) is arranged in the middle of the cyclone sewage collection well (53). The middle and lower layer drain pipe (58) is connected to one end of the tail water collection tank (55). The other end of the tail water collection tank (55) is communicated with the main drain pipe (8). The water level balance tank (56) is arranged on one side of the protein separation and treatment component (6). The upper part of the cyclone sewage collection well (53) is communicated with the water level balance tank (56) through an overflow pipe (57).

9. A process comprising the high-level pond aquaculture tail water treatment system according to any one of claims 1-8, characterized in that: The process includes the following steps: When the system is initially started, the tail water extraction component (2) extracts tail water from the bottom of the high-level aquaculture pond (1), so that the dead shrimp shells are intercepted in the shrimp shell interception and collection component (3). The aquaculture tail water enters the sewage well (4), and the aquaculture tail water enters the collection and treatment component (5) along the sewage well (4). When water needs to be drained and replaced during the aquaculture process, the draw-off sewage pipe (23) is lifted upward. The aquaculture tail water in the high-level aquaculture pond (1) is discharged along the bottom drain sewage pipe (22) and flows into the sewage well (4), and enters the collection and treatment component (5) from the sewage well (4). After the tail water enters the collection and treatment component (5), it is pretreated by sedimentation filtration, filter-feeding fish purification, and aquatic plants. The protein separation and treatment component (6) and the tri-oxygen microbial denitrification and phosphorus removal treatment component (7) extract the pretreated tail water from the collection and treatment component (5). The tri-oxygen microbial denitrification and phosphorus removal treatment component (7) performs tri-oxygen microbial filtration and ultraviolet disinfection treatment on the tail water. After the treatment is completed, the tail water flows into the protein separation and treatment component (6). The protein separation and treatment component (6) performs mechanical filtration, foam separation, and ozone disinfection treatment on the tail water. After the treatment is completed, the tail water meets the standards and is discharged.

10. The process of the high-level pond aquaculture tail water treatment system according to claim 9, characterized in that: The sedimentation filtration of the collection and treatment component also includes the following technological process: The cyclone sewage collection well (53) receives the tail water. The tail water undergoes cyclone sewage collection in the cyclone sewage collection well. The heavy silt deposits at the bottom of the cyclone sewage collection well (53). The upper clarified tail water enters the water level balance tank (56) along the overflow pipe (57). After being pumped by a water pump to the microbial denitrification and phosphorus removal filter (7) for treatment, it enters the protein separator (6) for foam separation and ozone disinfection. After the treatment is completed, the tail water meets the standards and is discharged.

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