Recovery treatment and cyclic utilization system and process for Dongstellate star culture tail water

Abstract

The invention aims to provide the system and the process for recovering, treating and recycling the tail water of the Dongpo culture, which have the advantages of high tail water recovery rate and capability of realizing multi-stage separation and filtration of residual feed, excrement and suspended matters. The system comprises a culture pond, a tail water collecting pond communicated with the culture pond and used for sedimentation and filtration, a primary rotational flow foam treatment module communicated with the tail water collecting pond, and a secondary rotational flow module communicated with the bottom of the primary rotational flow foam treatment module, the discharging pipe is connected with the culture pond, the primary rotational flow foam treatment module and the secondary rotational flow module and used for discharging suspended solids, the water outlet end of the primary rotational flow foam treatment module is communicated with the culture pond, and the middle of the primary rotational flow foam treatment module is communicated with the water outlet end of the secondary rotational flow module. The invention is applied to the technical field of tail water circulating filtration systems.

Description

Technical Field

[0001] The present invention relates to the technical field of tail water circulation filtration systems, and particularly relates to a system and process for recycling, treating and reusing the tail water of groupers (Plectropomus leopardus) farming. Background Art

[0002] Groupers (Plectropomus leopardus), scientifically named Plectropomus leopardus, are one of the characteristic and famous seawater aquaculture varieties in Hainan Province, with an annual output of about 20,000 tons and an annual output value exceeding 6 billion yuan, playing an important role in driving the employment of fishermen in coastal cities (counties) of Hainan Province, rural revitalization and social development. Despite this, with the rapid development of grouper farming, problems such as large water consumption in farming, frequent occurrence of farming diseases, and direct discharge of farming tail water have become increasingly prominent. How to solve these problems has become the focus of attention of the entire industry.

[0003] Groupers are warm-water reef fish and have relatively high requirements for seawater quality. In traditional grouper farming, in order to ensure the cleanliness of the farming water quality, a cement pond flowing water farming mode is mainly adopted, and the daily water flow is more than 10 times that of the farming water body, which is equivalent to consuming more than 250 m 3 of seawater for every 1 kg of commercial fish cultured; the discharged farming tail water contains a large amount of pollutants that are unfriendly to the environment, such as residual bait, feces, ammonia nitrogen nutrients, and pathogenic microorganisms, which affect the surrounding marine ecological environment, cause frequent occurrence of farming diseases in the area, and the farming benefits are unstable. Therefore, there is an urgent need to develop a technology that can not only effectively reduce the water consumption of grouper farming, but also efficiently treat the farming tail water to promote the green, healthy and sustainable development of the grouper farming industry. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, such as large water consumption in farming and unfriendly direct discharge of tail water to the environment, and provide a system and process for recycling, treating and reusing the tail water of grouper farming with a high tail water recovery rate and capable of achieving multi-stage separation and filtration of residual bait, feces and suspended solids.

[0005] The technical solution adopted by the present invention is as follows: The present invention includes a farming pond, a tail water collection pond connected to the farming pond for sedimentation and filtration, a primary cyclone foam treatment module connected to the tail water collection pond, a secondary cyclone module connected to the bottom of the primary cyclone foam treatment module, and a discharge pipe connected to the farming pond, the primary cyclone foam treatment module and the secondary cyclone module for discharging suspended solids. The water outlet end of the primary cyclone foam treatment module is connected to the farming pond, and the middle part of the primary cyclone foam treatment module is connected to the water outlet end of the secondary cyclone module.

[0006] Furthermore, the tail water collection pool includes a pool body, a number of microbial fiber bundles, and a water extraction pipe. One end of the pool body is connected to the aquaculture pond, and the water extraction pipe is arranged at the other end of the pool body. A number of water extraction holes are formed at the bottom of the water extraction pipe, and a one-way check valve is arranged on the water extraction pipe, and the one-way check valve is arranged above the number of water extraction holes. The water extraction pipe is connected to the primary cyclone foam treatment module. A first fixing frame is arranged at the upper part of the pool body, and a second fixing frame is arranged at the bottom of the pool body. A number of connection holes are arranged on both the first fixing frame and the second fixing frame, and each microbial fiber bundle is correspondingly buckled and connected to the corresponding connection hole.

[0007] Furthermore, the primary cyclone foam treatment module includes a treatment barrel, a double-layer cyclone member, an aeration and oxygenation member, an ozone jet member, and an outflow pipe. An inlet is arranged on one side of the treatment barrel, and the inlet is connected to a first treatment pump, and the first treatment pump is connected to the tail water collection pool. The double-layer cyclone member is arranged at the bottom of the treatment barrel, and the aeration and oxygenation member is arranged in the middle of the treatment barrel and above the inlet. The ozone jet member is fixedly connected to the treatment barrel, and the output end of the ozone jet member is above the aeration and oxygenation member. The outflow pipe is arranged on the other side of the treatment barrel. A foam outflow pipe is formed at the upper part of the treatment barrel, and the foam outflow pipe is connected to the discharge pipe. The bottom of the double-layer cyclone member is connected to the water inlet end of the secondary cyclone module, and the middle of the secondary cyclone module is connected to the water outlet end of the secondary cyclone module.

[0008] Furthermore, a second treatment pump is also arranged on the treatment barrel. The double-layer cyclone member includes a first cyclone layer, an outflow layer, and a second cyclone layer arranged in sequence from top to bottom. A sedimentation cavity for depositing residual bait and feces is formed at the lower ends of the outflow layer and the second cyclone layer, and the sedimentation cavity is connected to the discharge pipe. The bottom of the first cyclone layer is connected to the water inlet end of the secondary cyclone module, and the second cyclone layer is connected to the water outlet end of the secondary cyclone module. The water inlet end of the second treatment pump is connected to the outflow layer, the water outlet end of the second treatment pump is connected to the middle of the treatment barrel, and the middle of the second treatment pump is below the aeration and oxygenation member.

[0009] Furthermore, the outflow pipe includes a first drain pipe, a second drain pipe, an anti-overflow pipe, a water level coarse adjustment pipe, and a water level fine adjustment valve. Both the first drain pipe and the second drain pipe are connected to the treatment barrel. The water level coarse adjustment pipe is slidably connected to the first drain pipe. One end of the anti-overflow pipe is connected to the first drain pipe, and the other end of the anti-overflow pipe forms an outflow pipe communicating with the aquaculture pond. The second drain pipe is connected to the outflow pipe through the water level fine adjustment valve.

[0010] Further, the secondary swirl module includes a swirl tank, an input pipe, an output pipe, a vortex swirl member, and a collection chamber. One end of the input pipe is connected to the primary swirl foam treatment module, and the other end of the input pipe is connected to the side wall of the swirl tank. One end of the output pipe is connected to the top of the swirl tank, and the other end of the output pipe is connected to the primary swirl foam treatment module. The vortex swirl member is disposed in the middle of the swirl tank and is located below the water inlet of the input pipe. The collection chamber is located at the bottom of the swirl tank and is located below the vortex swirl member. The collection chamber is communicated with the discharge pipe.

[0011] Further, an outflow chamber is formed in the upper part of the swirl tank, and a connecting pipe communicating with the vortex swirl member is provided in the outflow chamber.

[0012] Further, the aquaculture pond is provided with an anti-escape net, an aeration disk, and a water inlet pipe. The anti-escape net is disposed at the bottom of the aquaculture pond. The aeration disk is snap-fitted and fixed above the anti-escape net. The water inlet pipe is fixedly connected to the middle of the aquaculture pond. The water inlet end of the water inlet pipe is disposed at the middle layer position of the aquaculture pond. A plurality of water inlets for water diversion are formed in the water inlet pipe. A drawpipe discharge pond for draining aquaculture water is provided on one side of the aquaculture pond. The drawpipe discharge pond is communicated with the discharge pipe.

[0013] Further, a receiving chamber is formed at the bottom of the aquaculture pond. A aquaculture drain pipe is connected to the receiving chamber. A balance pipe is provided at one end of the aquaculture drain pipe. A multi-stage water level adjusting member is connected to the middle of the aquaculture drain pipe. The multi-stage water level adjusting member is provided with a circulation pipe, a plurality of regulating valves, and a siphon breaking pipe. The circulation pipe is communicated with the discharge pipe. Each regulating valve is sequentially connected to the circulation pipe from top to bottom. The siphon breaking pipe is disposed above the connecting pipe.

[0014] Further, the process flow includes:

[0015] External source water is directly injected into the aquaculture pond, and the tail water is subjected to physical filtration and biological reaction. The water in the aquaculture pond flows into the tail water collection pond. A plurality of the microbial fiber bundles intercept and precipitate large-volume residual baits and feces in the tail water. The microorganisms in the microbial fiber bundles reduce ammonia nitrogen salts and nitrites in the tail water;

[0016] The tail water is subjected to primary swirl precipitation. The first treatment pump extracts the tail water into the primary swirl foam treatment module through the water extraction pipe. % of the tail water enters the secondary swirl module under the action of vortex. % of the tail water removes water-soluble organic matters and suspended matters under the combined action of the oxygenation aeration member and the ozone disinfection member. The organic matters and suspended matters are discharged from the foam outflow pipe in the form of foam;

[0017] The second vortex precipitation of the tail water. The tail water entering the secondary vortex module forms a vortex in the vortex swirling member to deposit and collect suspended substances and particulate matters, and the suspended substances and particulate matters are discharged into the discharge pipe.

[0018] The third vortex precipitation of the tail water. The tail water that has undergone the second vortex precipitation flows back into the primary vortex foam treatment module for three rotations. The suspended substances and particulate matters flow out into the discharge pipe, and the tail water is pumped by the second treatment pump to the aeration and ozone disinfection member for aeration and ozone disinfection.

[0019] The tail water after aeration, oxygenation and ozone disinfection flows back into the aquaculture pond again.

[0020] When it is necessary to empty the aquaculture water, pull out the balance pipe, and the aquaculture water flows directly out into the discharge pipe from the aquaculture drain pipe.

[0021] The beneficial effects of the present invention are as follows: Since the present invention adopts a tail water collection pond with microbial fiber bundles, the flow rate of the water flow is effectively reduced when the aquaculture tail water flows in, which accelerates the deposition of large particle suspended substances and particulate matters. Cooperating with the strains placed in the microbial fiber bundles, the ammonia nitrogen salts and nitrites in the tail water are absorbed, and the recycling rate of the tail water is improved. The primary vortex foam treatment module cooperates with the secondary vortex module to conduct three vortex collections on the tail water. During the first vortex collection, 30% of the water body containing suspended substances and floating substances in the tail water can be effectively diverted downward into the secondary vortex module, and the remaining 70% of the water body passes upward through the aeration and ozone disinfection members to kill bacteria and remove nitrites. After three vortex filtrations and aeration and disinfection, the recycling rate of the circulating water is greatly improved, and the recycling rate reaches 60%-70%. Description of the Drawings

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

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

[0024] Figure 3 is Figure 2 the partial enlarged view of part A in

[0025] Figure 4 is the structural schematic diagram of the primary vortex foam treatment module of the present invention;

[0026] Figure 5 is Figure 4 the partial enlarged view of part B in

[0027] Figure 6 is Figure 4 the partial enlarged view of part C in

[0028] Figure 7 is the structural schematic diagram of the secondary vortex module of the present invention;

[0029] Figure 8 It is a schematic structural diagram of the breeding pond of the present invention.

[0030] In the figure: 1. Breeding pond; 11. Anti-escape net; 12. Aeration disk; 13. Water inlet pipe; 14. Accommodation cavity; 15. Circulation pipe; 16. Regulating valve; 17. Siphon break pipe; 2. Tail water collection pond; 21. Pond body; 22. Microbial fiber bundle; 23. Water extraction pipe; 24. Check valve; 25. First fixing frame; 26. Second fixing frame; 3. Primary cyclone foam treatment module; 31. Treatment barrel; 32. Double-layer cyclone part; 321. First cyclone layer; 322. Outflow layer; 323. Second cyclone layer; 33. Aeration and oxygenation part; 34. Ozone jet part; 35. Outflow pipe; 351. First drain pipe; 352. Second drain pipe; 353. Anti-overflow pipe; 354. Coarse water level regulating pipe; 355. Fine water level regulating valve; 36. First treatment pump; 37. Second treatment pump; 38. Foam outflow pipe; 4. Secondary cyclone module; 41. Cyclone tank; 42. Input pipe; 43. Output pipe; 44. Vortex cyclone part; 45. Collection cavity; 46. Outflow cavity; 5. Drain pipe. Detailed implementation manners

[0031] As Figures 1 to 8 shown, in this embodiment, the present invention includes a breeding pond 1, a tail water collection pond 2 communicated with the breeding pond 1 for sedimentation and filtration, a primary cyclone foam treatment module 3 communicated with the tail water collection pond 2, a secondary cyclone module 4 communicated with the bottom of the primary cyclone foam treatment module 3, and a drain pipe 5 connected to the breeding pond 1, the primary cyclone foam treatment module 3 and the secondary cyclone module 4 for discharging suspended matters. The water outlet end of the primary cyclone foam treatment module 3 is communicated with the breeding pond 1, and the middle part of the primary cyclone foam treatment module 3 is communicated with the water outlet end of the secondary cyclone module 4;

[0032] The tail water collection pond 2 adopting the microbial fiber bundle 22 can effectively reduce the water flow velocity when the breeding tail water flows in, accelerate the deposition of large particle suspended matters and particulate matters, and cooperate with the strains put in the microbial fiber bundle 22 to absorb ammonia nitrogen salts and nitrites in the tail water, improving the recycling rate of the tail water. The primary cyclone foam treatment module 3 cooperates with the secondary cyclone module 4 to conduct three-time cyclone collection on the tail water. During the first cyclone collection, 30% of the water body containing suspended matters and floating matters in the tail water can be effectively drained downward to the secondary cyclone module 4, and the remaining 70% of the water body passes upward through the aeration and oxygenation part 33 and the ozone disinfection part to sterilize and remove nitrites. After three-time cyclone filtration and aeration and oxygenation disinfection, the recycling rate of the circulating water is greatly improved, and the recycling rate reaches 60%-70%.

[0033] In this embodiment, the tail water collection tank 2 includes a tank body 21, a plurality of microbial fiber bundles 22, and a water extraction pipe 23. One end of the tank body 21 is communicated with the aquaculture tank 1, and the water extraction pipe 23 is arranged at the other end of the tank body 21. A plurality of water extraction holes are formed at the bottom of the water extraction pipe 23. A one-way check valve 24 is arranged on the water extraction pipe 23, and the one-way check valve 24 is arranged above the plurality of water extraction holes. The water extraction pipe 23 is communicated with the primary cyclone foam treatment module 3. A first fixing frame 25 is arranged at the upper part of the tank body 21, and a second fixing frame 26 is arranged at the bottom of the tank body 21. A plurality of connection holes are arranged on both the first fixing frame 25 and the second fixing frame 26, and each microbial fiber bundle 22 is correspondingly buckled and connected with the corresponding connection hole; the fiber bundle is a porous strip structure, which can ensure the passage of water while intercepting large-particle floating objects, reducing the water flow velocity, ensuring that the bacteria placed in the fiber bundle have enough time to react with the tail water, and improving the removal efficiency of ammonia nitrogen salts and nitrites.

[0034] In this embodiment, the primary cyclone foam treatment module 3 includes a treatment barrel 31, a double-layer cyclone member 32, an aeration and oxygenation member 33, an ozone jet member 34, and an outflow pipe 35. An inlet is arranged on one side of the treatment barrel 31, and the inlet is connected with a first treatment pump 36. The first treatment pump 36 is connected with the tail water collection tank 2. The double-layer cyclone member 32 is arranged at the bottom of the treatment barrel 31. The aeration and oxygenation member 33 is arranged in the middle of the treatment barrel 31 and above the inlet. The ozone jet member 34 is fixedly connected with the treatment barrel 31, and the output end of the ozone jet member 34 is above the aeration and oxygenation member 33. The outflow pipe 35 is arranged on the other side of the treatment barrel 31. A foam outflow pipe 38 is formed at the upper part of the treatment barrel 31, and the foam outflow pipe 38 is communicated with the discharge pipe 5. The bottom of the double-layer cyclone member 32 is connected with the water inlet end of the secondary cyclone module 4, and the middle of the secondary cyclone module 4 is connected with the water outlet end of the secondary cyclone module 4; the inlet pumps the precipitated tail water from the tail water treatment tank into the treatment barrel 31 through the first treatment pump 36. The aeration and oxygenation member 33 can generate dense bubbles of nanometer size, and the foam separation method is used to remove and separate water-soluble organic matters, suspended matters, and fine particulate matters in the aquaculture tail water after solid-liquid separation. Ozone is introduced above the aeration and oxygenation member 33, and the reducing property of ozone is used to kill the germs in the tail water, reducing the content of toxic germs in the discharged tail water.

[0035] In this embodiment, the treatment barrel 31 is further provided with a second treatment pump 37. The double-layer cyclone member 32 includes a first cyclone layer 321, an outflow layer 322, and a second cyclone layer 323 arranged in sequence from top to bottom. A sedimentation chamber 334 for depositing residual bait and feces is formed at the lower ends of the outflow layer 322 and the second cyclone layer 323. The sedimentation chamber 334 is communicated with the discharge pipe 5. The bottom of the first cyclone layer 321 is connected to the water inlet end of the secondary cyclone module 4, and the second cyclone layer 323 is connected to the water outlet end of the secondary cyclone module 4. The water inlet end of the second treatment pump 37 is connected to the outflow layer 322, and the water outlet end of the second treatment pump 37 is connected to the middle part of the treatment barrel 31. The middle part of the second treatment pump 37 is located below the aeration member 33. The second treatment pump 37 is used to suck the water body that has undergone three-stage cyclone sewage collection from the upper part of the outflow layer 322 of the double-layer cyclone member 32 into the middle part of the treatment barrel 31, so that the clear water body participates in foam separation and ozone disinfection.

[0036] In this embodiment, the outflow pipe 35 includes a first drain pipe 351, a second drain pipe 352, an anti-overflow pipe 353, a water level coarse adjustment pipe 354, and a water level fine adjustment valve 355. Both the first drain pipe 351 and the second drain pipe 352 are connected to the treatment barrel 31. The water level coarse adjustment pipe 354 is slidably connected to the first drain pipe 351. One end of the anti-overflow pipe 353 is connected to the first drain pipe 351, and the other end of the anti-overflow pipe 353 forms an outflow pipe 35 communicated with the aquaculture pond 1. The second drain pipe 352 is communicated with the outflow pipe 35 through the water level fine adjustment valve 355. During use, the staff can adjust the height of the water level coarse adjustment pipe 354 by sliding it up and down, thereby adjusting the height of the water body in the treatment barrel 31. The water level fine adjustment valve 355 adjusts the size of the outflow water volume by the staff adjusting the valve size, thereby accurately controlling the water level inside the treatment barrel 31, effectively avoiding excessive water flow inflow due to too high voltage at night, resulting in treatment tail water flowing out from the foam outflow pipe 38.

[0037] In this embodiment, the secondary swirl module 4 includes a swirl tank 41, an input pipe 42, an output pipe 43, a vortex swirl member 44, and a collection chamber 45. One end of the input pipe 42 is connected to the primary swirl foam treatment module 3, and the other end of the input pipe 42 is connected to the side wall of the swirl tank 41. One end of the output pipe 43 is connected to the top of the swirl tank 41, and the other end of the output pipe 43 is connected to the primary swirl foam treatment module 3. The vortex swirl member 44 is disposed in the middle of the swirl tank 41 and is located below the water inlet of the input pipe 42. The collection chamber 45 is located at the bottom of the swirl tank 41 and is located below the vortex swirl member 44. The collection chamber 45 is communicated with the discharge pipe 5. The bottom of the collection chamber 45 is used to collect precipitated suspended solids and particulate matters and flow out through a pipeline connected to the discharge pipe 5.

[0038] In this embodiment, an outflow chamber 46 is formed in the upper part of the swirl tank 41. The outflow chamber 46 is provided with a connecting pipe communicated with the vortex swirl member 44, and the outflow chamber 46 is in a conical shape with a smaller upper part and a larger lower part.

[0039] In this embodiment, the aquaculture pond 1 is provided with an escape-proof net 11, an aeration disk 12, and a water inlet pipe 13. The escape-proof net 11 is disposed at the bottom of the aquaculture pond 1. The aeration disk 12 is snap-fitted and fixed above the escape-proof net 11. The water inlet pipe 13 is fixedly connected to the middle part of the aquaculture pond 1. The water inlet end of the water inlet pipe 13 is disposed at the middle layer position of the aquaculture pond 1. The water inlet pipe 13 is formed with a plurality of water inlets for water diversion. One side of the aquaculture pond 1 is provided with a draw-off discharge pond 18 for draining aquaculture water. The draw-off discharge pond 18 is communicated with the discharge pipe 5;

[0040] The water inlet pipe 13 is provided with a manual valve for controlling opening and closing. A siphon break pipe is disposed between the water inlet pipe and the manual valve to prevent the outflowing aquaculture water from flowing back and affecting the water quality in the aquaculture pond. The escape-proof net 11 of the aquaculture pond 1 is formed with a plurality of through holes for only allowing tail water and residual bait feces to pass through. The structure of the aeration disk 12 disposed above the escape-proof net 11. The aeration disk 12 in the middle pushes the water flow upward during the aeration and oxygenation process. Since the water flow is pushed upward, a low-pressure space is formed below the aeration disk 12 at this time, absorbing the outer water flow and moving toward the escape-proof net 11 to supplement, thereby sucking in the residual bait feces suspended in the water body and at the bottom of the aquaculture pond 1. The upward surging flowing water diffuses from the middle to the surroundings and flows from top to bottom along the inside of the aquaculture pond 1, thereby driving the surrounding water body to flow from top to bottom and making the residual bait feces accumulated at the bottom of the aquaculture pond 1 flow toward the central escape-proof net 11. Through the negative pressure suction at the lower part of the escape-proof net 11, the residual bait feces are discharged to the outside from one side of the multi-level water level adjusting member. The water inlet pipe 13 sucks in the tail water from the middle layer of the aquaculture pond 1. The amount of residual bait feces in the middle layer tail water is less, reducing the situation of blockage caused by the rapid accumulation of residual bait feces in the subsequent tail water circulation system.

[0041] In this embodiment, a receiving cavity 14 is formed at the bottom of the aquaculture pond 1. A aquaculture drain pipe 19 is connected to the receiving cavity 14. One end of the aquaculture drain pipe is provided with a balance pipe 6. A multi-stage water level regulating member is connected to the middle of the aquaculture drain pipe 19. The multi-stage water level regulating member is provided with a circulation pipe 15, a plurality of regulating valves 16 and a siphon break pipe 17. The circulation pipe 15 is communicated with the discharge pipe 5. Each regulating valve 16 is connected to the circulation pipe 15 in sequence from top to bottom. The siphon break pipe 17 is arranged at the upper part of the communicating pipe. The multi-stage water level regulating member controls the water level in the aquaculture pond 1 by setting a plurality of regulating valves 16 at different heights, based on the principle of communicating vessels. The structure is simple and convenient to use, improving the water level control efficiency.

[0042] In this embodiment, the technological process includes:

[0043] External source water is directly injected into the aquaculture pond 1, and the tail water undergoes physical filtration and biological reaction. The water in the aquaculture pond 1 flows into the tail water collection pond 2. A number of microbial fiber bundles 22 intercept and precipitate large-volume residual baits and feces in the tail water. The microorganisms in the microbial fiber bundles 22 reduce ammonia nitrogen salts and nitrites in the tail water;

[0044] The tail water undergoes the first cyclone precipitation. The first treatment pump 36 pumps the tail water into the primary cyclone foam treatment module 3 through the water extraction pipe 23. 30% of the tail water enters the secondary cyclone module 4 under the action of vortex. 70% of the tail water removes water-soluble organic matters and suspended matters under the combined action of the aeration and oxygenation member 33 and the ozone disinfection member. The organic matters and suspended matters are discharged from the foam outlet pipe 38 in the form of foam;

[0045] The tail water undergoes the second cyclone precipitation. The tail water entering the secondary cyclone module 4 forms a vortex deposition in the vortex cyclone member 44 to collect suspended matters and particulate matters, and the suspended matters and particulate matters are discharged into the discharge pipe 5;

[0046] The tail water undergoes the third cyclone precipitation. The tail water after the second cyclone precipitation flows back into the primary cyclone foam treatment module 3 for three rotations. The suspended matters and particulate matters flow out into the discharge pipe 5. The tail water is pumped by the second treatment pump 37 to the aeration and oxygenation member 33 for aeration and ozone disinfection;

[0047] The tail water after aeration, oxygenation and ozone disinfection flows back into the aquaculture pond 1 again;

[0048] When it is necessary to drain the aquaculture water, the balance pipe 6 is pulled out, and the aquaculture water directly flows out from the aquaculture drain pipe 19 into the discharge pipe 5.

[0049] 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 system for recycling and recycling tail water from grouper aquaculture, characterized by: The invention comprises a breeding pond (1), a tailwater collection pond (2) connected to the breeding pond (1) for sedimentation and filtration, a primary cyclone foam treatment module (3) connected to the tailwater collection pond (2), a secondary cyclone module (4) connected to the bottom of the primary cyclone foam treatment module (3), and a discharge pipe (5) connected to the breeding pond (1), the primary cyclone foam treatment module (3) and the secondary cyclone module (4) for discharging suspended matter, wherein the water outlet of the primary cyclone foam treatment module (3) is connected to the breeding pond (1), and the middle of the primary cyclone foam treatment module (3) is connected to the water outlet of the secondary cyclone module (4).

2. A grouper aquaculture tail water recovery and recycling system according to claim 1, characterized in that: The tailwater collection pool (2) comprises a pool body (21), a plurality of microbial fiber bundles (22) and a water pumping pipe (23); one end of the pool body (21) is connected to the culture pool (1); the water pumping pipe (23) is arranged at the other end of the pool body (21); a plurality of water pumping holes are formed at the bottom of the water pumping pipe (23); the water pumping pipe (23) is provided with a one-way check valve (24); the one-way check valve (24) is arranged above the plurality of water pumping holes; the water pumping pipe (23) is connected to the primary cyclone foam treatment module (3); a first fixing frame (25) is arranged at the top of the pool body (21); a second fixing frame (26) is arranged at the bottom of the pool body (21); the first fixing frame (25) and the second fixing frame (26) are both provided with a plurality of connection holes; each of the microbial fiber bundles (22) is correspondingly snap-fitted and connected to the corresponding connection hole.

3. A grouper aquaculture tail water recovery and recycling system according to claim 1, characterized in that: The primary cyclone foam treatment module (3) comprises a treatment barrel (31), a double-layer cyclone element (32), an oxygenation aeration element (33), an ozone jet element (34) and an outflow pipe (35); a water inlet is arranged on one side of the treatment barrel (31); the water inlet is connected to a first treatment pump (36); the first treatment pump (36) is connected to the tail water collection pool (2); the double-layer cyclone element (32) is arranged at the bottom of the treatment barrel (31); the oxygenation aeration element (33) is arranged in the middle of the treatment barrel (31) and is located above the water inlet; The ozone jet component (34) is connected and fixed to the treatment barrel (31); the output end of the ozone jet component (34) is located above the oxygen-enhancing aeration component (33); the outflow pipe (35) is arranged on the other side of the treatment barrel (31); a foam outflow pipe (38) is formed at the upper part of the treatment barrel (31); the foam outflow pipe (38) is communicated with the discharge pipe (5); the bottom of the double-layer cyclone component (32) is connected to the water inlet end of the secondary cyclone module (4); and the middle part of the secondary cyclone module (4) is connected to the water outlet end of the secondary cyclone module (4).

4. A grouper aquaculture tail water recovery and recycling system according to claim 3, characterized in that: The treatment barrel (31) is also provided with a second treatment pump (37). The double-layer cyclone element (32) comprises a first cyclone layer (321), an outflow layer (322) and a second cyclone layer (323) which are arranged in sequence from top to bottom. A sedimentation cavity (334) for depositing residual bait and feces is formed at the lower ends of the outflow layer (322) and the second cyclone layer (323). The sedimentation cavity (334) is communicated with the discharge pipe (5). The bottom of the first cyclone layer (321) is connected to the water inlet end of the secondary cyclone module (4). The second cyclone layer (323) is connected to the water outlet end of the secondary cyclone module (4). The water inlet end of the second treatment pump (37) is connected to the outflow layer (322). The water outlet end of the second treatment pump (37) is connected to the middle part of the treatment barrel (31). The middle part of the second treatment pump (37) is located below the oxygenation aeration element (33).

5. A grouper aquaculture tail water recovery and recycling system according to claim 3, characterized in that: The outflow pipe (35) comprises a first drain pipe (351), a second drain pipe (352), an overflow prevention pipe (353), a water level coarse adjustment pipe (354) and a water level fine adjustment valve (355); the first drain pipe (351) and the second drain pipe (352) are both connected to the treatment barrel (31); the water level coarse adjustment pipe (354) is slidably connected to the first drain pipe (351); one end of the overflow prevention pipe (353) is connected to the first drain pipe (351); the other end of the overflow prevention pipe (353) is formed with an outflow pipe (35) connected to the breeding pond (1); the second drain pipe (352) is connected to the outflow pipe (35) through the water level fine adjustment valve (355).

6. A grouper aquaculture tail water recovery and recycling system according to claim 1, characterized in that: The secondary cyclone module (4) comprises a cyclone pot (41), an input pipe (42), an output pipe (43), a vortex cyclone element (44) and a collecting chamber (45); one end of the input pipe (42) is connected to the primary cyclone foam treatment module (3); the other end of the input pipe (42) is connected to the side wall of the cyclone pot (41); one end of the output pipe (43) is connected to the top of the cyclone pot (41); the other end of the output pipe (43) is connected to the primary cyclone foam treatment module (3); the vortex cyclone element (44) is arranged in the middle of the cyclone pot (41) and is located below the water inlet of the input pipe (42); the collecting chamber (45) is located at the bottom of the cyclone pot (41) and is located below the vortex cyclone element (44); and the collecting chamber (45) is communicated with the discharge pipe (5).

7. A grouper aquaculture tail water recovery and recycling system according to claim 6, characterized in that: An outflow chamber (46) is formed at the upper portion of the swirl pot (41), and the outflow chamber (46) is provided with a connecting pipe that is in communication with the vortex swirl element (44).

8. The system for recycling and recycling tail water of grouper aquaculture according to claim 1, characterized in that: The culture pond (1) is provided with an anti-escape net (11), an aeration plate (12) and a water inlet pipe (13); the anti-escape net (11) is arranged at the bottom of the culture pond (1); the aeration plate (12) is fixedly engaged with the upper part of the anti-escape net (11); the water inlet pipe (13) is fixedly connected to the middle part of the culture pond (1); the water inlet end of the water inlet pipe (13) is arranged at the middle layer of the culture pond (1); the water inlet pipe (13) is formed with a plurality of water inlets for drainage; a pipe pulling discharge pool (18) for draining culture water is provided on one side of the culture pond (1); the pipe pulling discharge pool (18) is connected to the discharge pipe (5).

9. A grouper breeding tail water recovery and recycling system according to claim 8, characterized in that: The bottom of the aquaculture pond (1) is formed with a receiving chamber (14), the receiving chamber (14) is connected to an aquaculture drain pipe (19), one end of the aquaculture drain pipe is provided with a balance pipe (6), the middle of the aquaculture drain pipe (19) is connected to a multi-stage water level adjustment component, the multi-stage water level adjustment component is provided with a flow pipe (15), a plurality of regulating valves (16) and a siphon breaking pipe (17), the flow pipe (15) is connected to the discharge pipe (5), each regulating valve (16) is connected to the flow pipe (15) in sequence from top to bottom, and the siphon breaking pipe (17) is provided at the upper part of the connecting pipe.

10. A process comprising the grouper aquaculture tail water recovery and recycling system according to any one of claims 1 to 9, characterized in that: The process comprises: External source water is directly injected into the culture pond (1), and the tail water undergoes physical filtration and biological reaction. The water in the culture pond (1) flows into the tail water collection pond (2), and a plurality of microbial fiber bundles (22) intercept and precipitate the large volume of residual bait and feces in the tail water. The microorganisms in the microbial fiber bundles (22) reduce ammonia nitrogen salts and nitrites in the tail water. The tail water undergoes a first cyclone sedimentation, the first treatment pump (36) draws the tail water into the primary cyclone foam treatment module (3) through the pumping pipe (23), 30% of the tail water enters the secondary cyclone module (4) under the action of the vortex, and 70% of the tail water removes water-soluble organic matter and suspended matter under the combined action of the oxygenation aeration element (33) and the ozone disinfection element, and the organic matter and suspended matter are discharged from the foam outflow pipe (38) in the form of foam; The tail water undergoes a second cyclone sedimentation, and the tail water entering the secondary cyclone module (4) forms a vortex sedimentation in the vortex cyclone element (44) to collect suspended matter and particulate matter, and the suspended matter and particulate matter are discharged into the discharge pipe (5); The tail water undergoes a third cyclone sedimentation, and the tail water after the second cyclone sedimentation flows back into the primary cyclone foam treatment module (3) for three cyclones, and the suspended matter and particles flow out to the discharge pipe (5), and the tail water is pumped into the oxygenation aeration element (33) through the second treatment pump (37) for aeration and ozone disinfection; The tail water after aeration and ozone disinfection is returned to the culture pond (1); When the aquaculture water needs to be drained, the balance pipe (6) is pulled out, and the aquaculture water flows directly from the aquaculture drain pipe (19) to the discharge pipe (5).

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