CN112931389A

CN112931389A - Water treatment system for fish culture based on industrial production

Info

Publication number: CN112931389A
Application number: CN202110172995.XA
Authority: CN
Inventors: 于海瑞; 于乐永; 王树亮; 崔红; 张琴; 赵建民; 王金庆; 刘东武; 冯永永; 封佳丽
Original assignee: Kangyuan Lingxian Jining Technology Co ltd; Kangyuan Lingxian Technology Co ltd; Shandong Kangkerun Ocean Technology Co ltd
Current assignee: Kangyuan Lingxian Jining Technology Co ltd; Kangyuan Lingxian Technology Co ltd; Shandong Kangkerun Ocean Technology Co ltd
Priority date: 2021-02-08
Filing date: 2021-02-08
Publication date: 2021-06-11

Abstract

The invention belongs to the technical field of agriculture, and particularly relates to a water treatment system for fish culture in an industrial manner, aiming at the problem of poor water treatment effect, the water treatment system comprises a culture workshop and a culture pond, wherein the culture pond comprises a plurality of culture chambers, the culture chambers are separated by using partition plates, baffle nets are inlaid at the upper parts of the partition plates, a first liquid pump is installed at the bottom in the culture chamber on the rightmost side, annular pipes are installed at the bottom in the culture chamber, water outlets are communicated with the inner sides of the annular pipes, a treatment pond is arranged at one side of the culture pond in the culture workshop and comprises a grit chamber, an adjusting tank, a membrane biological reaction pond, a sand filter and a disinfection pond, a mud scraping mechanism is arranged at the bottom in the grit pond, and a back flushing mechanism is arranged in the treatment pond. The invention reduces the occupied area, saves the cost, has better water treatment effect, and avoids the accumulation and oxidation of waste and metabolites caused by dead water to deteriorate the water quality.

Description

Water treatment system for fish culture based on industrial production

Technical Field

The invention relates to the technical field of agriculture, in particular to a water treatment system based on industrial aquaculture of fish.

Background

With the rapid growth of aquaculture production, the specific gravity of aquaculture in aquaculture industry is also increasing. Among the numerous aquaculture modes, pond culture remains the most prominent form. However, with the development of the economic society and the feed fish culture technology, the problems of water resource shortage, environmental pollution, ecological environment pressure and the like are increasingly emphasized by people, the problems exposed by the traditional pond culture mode are more and more serious, and the industrial culture is advocated. The industrial culture is a culture mode with high density and high yield by adopting advanced mechanical and electronic equipment to control factors such as temperature, illumination, dissolved oxygen, pH value, bait feeding amount and the like of a culture water body in an indoor water pool, and compared with the traditional pond culture mode, the industrial culture is easy to manage and control in quality. However, in the high-density industrial aquaculture process, a large amount of waste and metabolites are generated, and the accumulation and oxidation of the waste and metabolites can spoil the water quality and cause the death of aquatic products, so that the aquaculture water needs to be treated.

The existing water treatment system for the industrial aquaculture of the fishes has short water treatment process, incomplete treatment and poor water treatment effect; the water in the culture pond of the existing industrial fish culture water treatment system is not smooth to flow to form dead water, which easily causes the accumulation and oxidation of wastes and metabolites to deteriorate the water quality.

Disclosure of Invention

Based on the technical problems in the background art, the invention provides a water treatment system based on industrial fish culture.

The invention provides a water treatment system for fish culture based on factory production, which comprises a culture workshop and a culture pond, wherein the culture pond is arranged in the middle of the culture workshop and comprises a plurality of culture chambers, the culture chambers are separated by partition plates, baffle nets are inlaid at the upper parts of the partition plates, a first liquid pump is arranged at the bottom in the culture chamber on the rightmost side, a water outlet of the first liquid pump is communicated with a water supply pipe, the water supply pipe extends into the bottoms in other culture chambers respectively, annular pipes are arranged at the bottoms in the other culture chambers respectively, water outlets are communicated with the inner sides of the annular pipes, a treatment pond is arranged at one side of the culture pond in the culture workshop and comprises a sand basin, an adjusting pond, a membrane biological reaction pond, a sand filter pond and a disinfection pond, and oxygen increasing ponds are surrounded at two sides of the culture pond in the culture workshop, the bottom in the oxygenation pond is installed and is stirred under water, the bottom is equipped with scrapes mud mechanism in the grit chamber, and is equipped with back flush mechanism in the treatment tank.

Preferably, the fodder jar has been placed to the outside one side in workshop, the liquid oxygen jar has been placed to the outside opposite side in workshop, fodder jar and liquid oxygen jar all are equipped with a plurality ofly, and are a plurality of fodder jar and liquid oxygen jar are respectively in the outside opposite both sides evenly distributed in workshop.

Preferably, a plurality of breed room is at the inside horizontal evenly distributed of breed pond, and is a plurality of the fender net height on baffle upper portion increases from a left side to the right side in proper order, and is a plurality of the annular tube all communicates with the delivery pipe, the delivery port is equipped with a plurality ofly, and is a plurality of the delivery port is circumference evenly distributed at the annular tube inboard.

Preferably, grit chamber, equalizing basin, membrane biological reaction pond, sand filter and disinfection pond set gradually from a left side to the right side inside the treatment tank, communicate in proper order between grit chamber, equalizing basin, membrane biological reaction pond, sand filter and the disinfection pond, disinfection pond and oxygenation pond intercommunication, the oxygenation pond communicates with a plurality of culture rooms respectively.

Preferably, it is a plurality of the blow off pipe has been run through to breed indoor bottom one side, blow off pipe side intercommunication has the blowdown branch pipe, and the blowdown branch pipe is equipped with a plurality ofly, a plurality of blowdown branch pipes respectively with a plurality of breed room intercommunications, blow off pipe one end intercommunication has the connecting pipe, and the connecting pipe other end and grit chamber intercommunication.

Preferably, the inside ultraviolet tube of vertically installing of disinfection pond, ultraviolet tube is equipped with a plurality ofly, and is a plurality of ultraviolet tube is at the inside evenly distributed of disinfection pond, the inside packing of sand filter has quartz sand, oxygenation pond top is encapsulated situation, the agitator is equipped with a plurality ofly under water, and is a plurality of agitator is evenly distributed in oxygenation pond bottom in the pond under water.

Preferably, scrape mud mechanism and include hydraulic telescoping rod, the slope is installed to the bottom in the grit chamber, the install bin is installed to the outside one side below of grit chamber, hydraulic telescoping rod installs in the install bin slope, hydraulic telescoping rod's flexible end stretch into the grit chamber and with grit chamber sliding connection, the mud scraping plate is installed on hydraulic telescoping rod's flexible end top, the bottom on mud scraping plate and the top butt on slope, the outer wall on grit chamber is located the bottom on slope and installs the electrically operated gate.

Preferably, the backwashing mechanism comprises a submersible sewage pump and a second liquid pump, the second liquid pump is installed at the bottom of one side, close to the disinfection tank, of the oxygenation tank, and the submersible sewage pump is installed at the bottom of one side, close to the membrane biological reaction tank, of the sand filter tank.

Preferably, the water outlet of the second liquid pump is communicated with a back-flushing pipe, the other end of the back-flushing pipe is communicated with the bottom of the sand filter tank close to the disinfection tank, the water outlet of the submersible sewage pump is communicated with a return pipe, and the other end of the return pipe is communicated with the bottom of the sand basin far away from the adjusting tank.

Preferably, the culture pond is communicated with the treatment pond, the treatment pond is communicated with the oxygen increasing pond, and the oxygen increasing pond is communicated with the culture pond.

The beneficial effects of the invention are as follows:

1. this based on industrial aquaculture fish water processing system, through being provided with membrane biological reaction pond, sand filter and disinfection pond, membrane biological reaction pond replaces the terminal secondary sedimentation pond of traditional biological treatment technique with the membrane module, keeps high activated sludge concentration in bioreactor, improves biological treatment organic load to reduce sewage treatment facility area, and reduce the excess sludge volume through keeping low sludge load, deuterogamy subsequent advanced treatment and the disinfection of sand filter and disinfection pond, make water treatment better.

2. This based on fish water processing system is bred in batch production, through being provided with the grit chamber, equalizing basin and mud scraping mechanism, the grit chamber can make the inorganic granule that proportion is big sink to the grit chamber bottom of the pool, the rethread equalizing basin is mediated the water yield and the quality of water of sewage, guarantee follow-up processing system's normal operating, reduce the operational load in membrane biological reaction pond, and regularly open electrically operated gate and hydraulic telescoping rod, hydraulic telescoping rod drives the mud scraper and removes and strike off the mud on the slope, need not other mud scraping machine, and the cost is saved.

3. According to the water treatment system for the factory-like cultured fishes, the backwashing mechanism is arranged, after the sand filter tank filters for a long time, the second liquid pump is started to pump part of water in the oxygenation tank to be backwashed into the sand filter tank through the backwashing pipe to backwash quartz sand, impurities attached to the surface of the quartz sand are flushed away, the submersible sewage pump is started to pump back the backwashed sewage into the sand setting tank through the return pipe to continue subsequent treatment, the self-production and self-selling are completed, a water source is not required to be additionally increased to flush the quartz sand, and resources are saved.

4. This water treatment system based on fish is bred in batch production, through being provided with breed pond and first drawing liquid pump, set up a plurality of breed rooms in the breed pond, every is bred indoor formation water fall, the water of room is bred to the top flows to the breed of below indoor through keeping off the net, it prevents that the fish from flowing away along with the rivers to keep off the net, the indoor water of breeding of below supplies to the ring pipe through the delivery pipe in the rethread first drawing liquid pump extraction, supply respectively to the breed of above indoor again by the delivery port, and the delivery port that the annular set up makes out water be the ascending turbulent flow form of spiral, thereby the speed that quickens rivers flow, thereby make the indoor water of breeding become the running water that flows, thereby avoid the stagnant water to lead to piling up and the oxidation of discarded object and metabolite to spoil quality of.

The parts of the device not involved are the same as or can be implemented using prior art.

Drawings

FIG. 1 is a schematic structural diagram of a water treatment system for fish culture based on industrial production according to the present invention;

FIG. 2 is a cross-sectional view of a culture pond based on an industrial fish culture water treatment system provided by the invention;

FIG. 3 is a partial top sectional view of a water treatment system for fish culture according to the present invention;

FIG. 4 is a partial top sectional view of a water treatment system for fish culture according to the present invention;

FIG. 5 is a sectional view of a grit chamber of the water treatment system for industrial fish culture according to the present invention;

FIG. 6 is a flow chart of a water treatment system for fish culture based on industrial production according to the present invention.

In the figure: 1. a culture pond; 2. a feed tank; 3. a breeding workshop; 4. a grit chamber; 5. a regulating tank; 6. a membrane biological reaction tank; 7. a sand filter; 8. a disinfection tank; 9. an oxygenation pool; 10. a liquid oxygen tank; 11. a culture room; 12. a partition plate; 13. blocking the net; 14. an annular tube; 15. a first liquid pump; 16. an underwater agitator; 17. a mud scraper; 18. a water outlet; 19. a water supply pipe; 20. a blow-off pipe; 21. a return pipe; 22. a submersible sewage pump; 23. a backwash pipe; 24. an ultraviolet lamp tube; 25. a second liquid pump; 26. an electrically operated door; 27. a slope; 28. a hydraulic telescopic rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-6, a water treatment system based on industrial fish culture comprises a culture workshop 3 and a culture pond 1, wherein the culture pond 1 is arranged in the middle of the culture workshop 3, the culture pond 1 comprises culture chambers 11, the culture chambers 11 are provided with a plurality of water supply pipes 19, the culture chambers 11 are separated by partition plates 12, baffle nets 13 are inlaid on the upper portions of the partition plates 12, a first liquid suction pump 15 is arranged at the bottom of the culture chamber 11 on the rightmost side, the water outlet of the first liquid suction pump 15 is communicated with a water supply pipe 19, the water supply pipes 19 respectively extend into the bottoms of the other culture chambers 11, annular pipes 14 are arranged at the bottom of the other culture chambers 11, water outlets 18 are communicated with the inner sides of the annular pipes 14, a treatment pond is arranged on one side of the culture pond 1 in the culture workshop 3, and comprises a sand basin 4, a regulating pond 5, a membrane biological reaction pond 6, a sand filter pond 7 and a disinfection pond 8, the inside both sides that are located 1 outside of breed pond of 3 in the workshop are enclosed and are had oxygenation pond 9, and the bottom is installed under water agitator 16 in oxygenation pond 9, and the bottom is equipped with scrapes mud mechanism in the grit chamber 4, and is equipped with back flush mechanism in the treatment tank.

According to the invention, the feed tank 2 is arranged on one side outside the cultivation workshop 3, the liquid oxygen tank 10 is arranged on the other side outside the cultivation workshop 3, the feed tanks 2 and the liquid oxygen tanks 10 are respectively provided with a plurality of feed tanks 2, and the liquid oxygen tanks 10 are respectively and uniformly distributed on two opposite sides outside the cultivation workshop 3. The liquid oxygen tank 10 provides oxygen required by the oxygen increasing pond 9, and the feed tank 2 provides feed for fishes in the culture pond 1.

In the invention, a plurality of culture rooms 11 are transversely and uniformly distributed in a culture pond 1, the height of a blocking net 13 at the upper part of a plurality of partition plates 12 is sequentially increased from left to right, a plurality of annular pipes 14 are communicated with a water supply pipe 19, a plurality of water outlets 18 are arranged, and a plurality of water outlets 18 are circumferentially and uniformly distributed on the inner side of the annular pipe 14.

In the invention, a grit chamber 4, an adjusting tank 5, a membrane biological reaction tank 6, a sand filter tank 7 and a disinfection tank 8 are sequentially arranged in a treatment tank from left to right, the grit chamber 4, the adjusting tank 5, the membrane biological reaction tank 6, the sand filter tank 7 and the disinfection tank 8 are sequentially communicated, the disinfection tank 8 is communicated with an oxygenation tank 9, and the oxygenation tank 9 is respectively communicated with a plurality of culture rooms 11.

In the invention, a plurality of blow-off pipes 20 penetrate through one side of the bottom in the plurality of culture rooms 11, the side surfaces of the blow-off pipes 20 are communicated with blow-off branch pipes, the plurality of blow-off branch pipes are respectively communicated with the plurality of culture rooms 11, one end of each blow-off pipe 20 is communicated with a connecting pipe, and the other end of each connecting pipe is communicated with the grit chamber 4. The culture water in the culture room 11 is discharged to the grit chamber 4 through the sewage discharge pipe 20.

According to the invention, a plurality of ultraviolet lamp tubes 24 are longitudinally arranged in the disinfection tank 8, the ultraviolet lamp tubes 24 are uniformly distributed in the disinfection tank 8, quartz sand is filled in the sand filter 7, the top of the oxygenation tank 9 is in a sealed state, a plurality of underwater stirrers 16 are arranged, the plurality of underwater stirrers 16 are uniformly distributed at the bottom in the oxygenation tank 9, and the underwater stirrers 16 accelerate the mixing speed of water and liquid oxygen and accelerate the increase of dissolved oxygen in water.

According to the invention, the mud scraping mechanism comprises a hydraulic telescopic rod 28, a slope 27 is installed at the bottom in the grit chamber 4, an installation box is installed below one side outside the grit chamber 4, the hydraulic telescopic rod 28 is obliquely installed in the installation box, the telescopic end of the hydraulic telescopic rod 28 extends into the grit chamber 4 and is in sliding connection with the grit chamber 4, a mud scraping plate 17 is installed at the top end of the telescopic end of the hydraulic telescopic rod 28, the bottom end of the mud scraping plate 17 is abutted against the top of the slope 27, and an electric door 26 is installed on the outer wall of the grit chamber 4, which is located at the bottom end of the slope 27. The electrically operated gate 26 and the hydraulic telescoping rod 28 are opened regularly, and the hydraulic telescoping rod 28 drives the mud scraper 17 and removes and strike off the mud on the slope 27, need not other mud scraping machine, practices thrift the cost.

In the invention, the back flushing mechanism comprises a submersible sewage pump 22 and a second liquid pump 25, the second liquid pump 25 is arranged at the bottom of the side, close to the disinfection tank 8, of the oxygenation tank 9, and the submersible sewage pump 22 is arranged at the bottom of the side, close to the membrane biological reaction tank 6, of the sand filter tank 7.

In the invention, the water outlet of the second liquid pump 25 is communicated with a back-flushing pipe 23, the other end of the back-flushing pipe 23 is communicated with the bottom of the sand filter 7 close to the disinfection tank 8, the water outlet of the submersible sewage pump 22 is communicated with a return pipe 21, and the other end of the return pipe 21 is communicated with the bottom of the sand basin 4 far away from the adjusting tank 5. And starting a second liquid pump 25 to pump part of water in the oxygenation tank 9, supplying the part of water into the sand filter 7 through a backwashing pipe 23 to backwash quartz sand, flushing impurities attached to the surface of the quartz sand off, and starting a submersible sewage pump 22 to pump back the backflushed sewage to the sand basin 4 through a return pipe 21 for subsequent treatment.

According to the invention, the culture pond 1 is communicated with the treatment pond, the treatment pond is communicated with the oxygenation pond 9, the oxygenation pond 9 is communicated with the culture pond 1, culture water in the culture pond 1 enters the treatment pond for treatment, the treated water enters the oxygenation pond 9 to increase dissolved oxygen, and the oxygenated water returns to the interior of the culture pond 1 for fish culture.

The working principle is as follows: the grit chamber 4 can enable inorganic particles with large specific gravity to sink to the bottom of the grit chamber 4, the adjustment chamber 5 is used for adjusting the water quantity and the water quality of sewage, the normal operation of a subsequent treatment system is ensured, the operation load of the membrane biological reaction chamber 6 is reduced, the electric door 26 and the hydraulic telescopic rod 28 are periodically opened, the hydraulic telescopic rod 28 drives the mud scraping plate 17 to move to scrape off the mud on the slope 27, an additional mud scraping machine is not needed, and the cost is saved; the membrane biological reaction tank 6 replaces a traditional biological treatment technology tail end secondary sedimentation tank with a membrane component, keeps high active sludge concentration in a bioreactor, improves biological treatment organic load, reduces sewage treatment facility floor area, reduces excess sludge amount by keeping low sludge load, and is matched with subsequent advanced treatment and disinfection of a sand filter 7 and a disinfection tank 8 to ensure better water treatment effect; after the sand filter 7 filters for a long time, a second liquid pump 25 is started to pump part of water in the oxygenation tank 9, the part of the water is supplied into the sand filter 7 through a backwashing pipe 23 to backwash quartz sand, impurities attached to the surface of the quartz sand are washed off, a submersible sewage pump 22 is started to pump back the backwashed sewage to the sand basin 4 through a return pipe 21 for continuous subsequent treatment, the self-production and self-selling are completed, a water source is not required to be additionally added to wash the quartz sand, and resources are saved; a plurality of culture chambers 11 are arranged in the culture pond 1, a water flow drop is formed in each culture chamber 1, water in the culture chamber 11 above flows into the culture chamber 11 below through a blocking net 13, the blocking net 13 prevents fishes from flowing away along with water flow, water in the culture chamber 11 at the lowest part is pumped by a first liquid pump 15 and is supplied to an annular pipe 14 through a water supply pipe 19, the water is supplied into the culture chamber 11 above through a water outlet 18, the water outlet 18 is in a spiral upward turbulent flow shape through the water outlet 18 which is arranged annularly, the flowing speed of the water is accelerated, the water in the culture chamber 11 becomes flowing live water, and the phenomenon that the dead water causes the accumulation and oxidation of wastes and metabolites to deteriorate the water quality is avoided.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a water treatment system for fish based on batch production breed, includes aquaculture workshop (3) and breed pond (1), its characterized in that, breed pond (1) and set up in the middle part of aquaculture workshop (3), breed pond (1) including breeding room (11), breed room (11) and be equipped with a plurality ofly, a plurality ofly all utilize baffle (12) to separate between breeding the room (11), and a plurality ofly baffle (12) upper portion all inlays and has fender net (13), and the rightmost side breed the room (11) bottom in installs first drawing liquid pump (15), the delivery port intercommunication of first drawing liquid pump (15) has delivery pipe (19), delivery pipe (19) stretch into other breeding room (11) bottom respectively, in addition breeding room (11) bottom all installs annular tube (14), and a plurality ofly annular tube (14) inboard all communicates there is delivery port (18), one side that breed pond (1) is located in inside of workshop (3) is equipped with the treatment tank, and handles the pond and include grit chamber (4), equalizing basin (5), membrane biological reaction pond (6), sand filter (7) and disinfection pond (8), the inside both sides that are located breed pond (1) outside of workshop (3) are enclosed and are had oxygenation pond (9), agitator (16) under water are installed to oxygenation pond (9) bottom, the bottom is equipped with scrapes mud mechanism in grit chamber (4), and is equipped with back flush mechanism in the treatment tank.

2. The industrial fish aquaculture water treatment system according to claim 1, wherein a feed tank (2) is placed on one side of the outside of the aquaculture workshop (3), a liquid oxygen tank (10) is placed on the other side of the outside of the aquaculture workshop (3), a plurality of feed tanks (2) and liquid oxygen tanks (10) are arranged, and the feed tanks (2) and the liquid oxygen tanks (10) are uniformly distributed on two opposite sides of the outside of the aquaculture workshop (3).

3. The industrial fish culture water treatment system according to claim 1, wherein a plurality of culture rooms (11) are transversely and uniformly distributed in the culture pond (1), the height of the baffle net (13) on the upper part of the partition plate (12) is increased from left to right, a plurality of annular pipes (14) are communicated with a water supply pipe (19), a plurality of water outlets (18) are arranged, and a plurality of water outlets (18) are circumferentially and uniformly distributed on the inner side of the annular pipes (14).

4. The industrial aquaculture fish-based water treatment system according to claim 1, wherein the grit chamber (4), the regulating tank (5), the membrane biological reaction tank (6), the sand filter tank (7) and the disinfection tank (8) are sequentially arranged inside the treatment tank from left to right, the grit chamber (4), the regulating tank (5), the membrane biological reaction tank (6), the sand filter tank (7) and the disinfection tank (8) are sequentially communicated, the disinfection tank (8) is communicated with the oxygenation tank (9), and the oxygenation tank (9) is respectively communicated with the aquaculture chambers (11).

5. The industrial aquaculture fish water treatment system based on the claim 1, characterized in that a plurality of blow-off pipes (20) penetrate through one side of the bottom in the aquaculture chambers (11), blow-off branch pipes are communicated with the side surfaces of the blow-off pipes (20), a plurality of blow-off branch pipes are arranged, the plurality of blow-off branch pipes are respectively communicated with the aquaculture chambers (11), one ends of the blow-off pipes (20) are communicated with connecting pipes, and the other ends of the connecting pipes are communicated with the grit chamber (4).

6. The industrial fish culture water treatment system according to claim 1, wherein a plurality of ultraviolet lamps (24) are longitudinally installed inside the disinfection tank (8), the ultraviolet lamps (24) are uniformly distributed inside the disinfection tank (8), quartz sand is filled inside the sand filter (7), the top of the oxygenation tank (9) is in a sealed state, a plurality of underwater stirrers (16) are arranged, and the plurality of underwater stirrers (16) are uniformly distributed at the bottom inside the oxygenation tank (9).

7. The industrial aquaculture fish-based water treatment system according to claim 1, wherein the mud scraping mechanism comprises a hydraulic telescopic rod (28), a slope (27) is installed at the bottom in the grit chamber (4), an installation box is installed below one side outside the grit chamber (4), the hydraulic telescopic rod (28) is installed in the installation box in an inclined mode, the telescopic end of the hydraulic telescopic rod (28) extends into the grit chamber (4) and is in sliding connection with the grit chamber (4), a mud scraping plate (17) is installed at the top end of the telescopic end of the hydraulic telescopic rod (28), the bottom end of the mud scraping plate (17) is abutted to the top of the slope (27), and an electric door (26) is installed at the bottom end, located on the slope (27), of the outer wall of the grit chamber (4).

8. The industrial aquaculture fish-based water treatment system according to claim 1, wherein the backwashing mechanism comprises a submersible sewage pump (22) and a second liquid pump (25), the second liquid pump (25) is installed at the bottom of the oxygen increasing tank (9) close to the disinfection tank (8), and the submersible sewage pump (22) is installed at the bottom of the sand filter tank (7) close to the membrane biological reaction tank (6).

9. The industrial fish farming water treatment system according to claim 8, wherein the outlet of the second liquid pump (25) is communicated with a backwash pipe (23), the other end of the backwash pipe (23) is communicated with the bottom of the sand filter (7) near the disinfection tank (8), the outlet of the submersible sewage pump (22) is communicated with a return pipe (21), and the other end of the return pipe (21) is communicated with the bottom of the sand basin (4) far away from the adjusting tank (5).

10. The industrial fish culture water treatment system according to claim 1, wherein the culture pond (1) is communicated with a treatment pond, the treatment pond is communicated with an oxygen increasing pond (9), and the oxygen increasing pond (9) is communicated with the culture pond (1).