Cultivation fishpond circulating water treatment system

By designing a circulating water treatment system consisting of a conical chamber for recirculation separation, a brush chamber, an ultraviolet lamp chamber, and a biological treatment pond, the problems of water resource consumption and eutrophication in traditional aquaculture have been solved. This system enables wastewater recycling and equipment simplification, thereby improving aquaculture efficiency and economic benefits.

CN121621283APending Publication Date: 2026-03-10云南省渔业科学研究院
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-28
Publication Date
2026-03-10

AI Technical Summary

Technical Problem

Traditional aquaculture requires frequent water changes, which consumes a lot of water resources and is susceptible to external pollution, leading to eutrophication and excessive levels of harmful substances in the water, which affects the health of fish and economic benefits.

Method used

Design a circulating water treatment system that includes a recirculating separation conical chamber, a brush chamber, an ultraviolet lamp chamber, and a biological treatment tank. Through multi-stage purification treatment of sewage, the system enables the recycling of sewage and reduces equipment dependence and maintenance costs.

Benefits of technology

It has achieved water conservation, reduced the impact of external pollution, lowered energy consumption, simplified the maintenance process, effectively solved the problem of eutrophication, and improved the survival rate and economic benefits of aquaculture.

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Abstract

The invention belongs to the field of fishpond circulating systems, and particularly relates to a breeding fishpond circulating water treatment system which comprises a circulation separation conical bin, a brush bin, an ultraviolet lamp bin, a biochemical pool, a fishpond and a sewage discharge system. Fish manure, residual feed and other dirt can be filtered out through the circulation separation conical bin, algae and other floating objects can be filtered out through the brush bin, diseases, microorganisms and parasites in sewage can be killed through the ultraviolet lamp bin, ammonia nitrogen in the sewage can be decomposed through the biochemical pool, the dirt can be discharged out of the system through the sewage discharging system, the treated sewage is finally discharged out of the fishpond, and water circulation is completed. The fishpond is circularly treated, and a plurality of water treatment functional areas are arranged, so that water resources are saved, the pollution influence on an external water source is reduced, and the problem of eutrophication of a water body is solved in the system.
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Description

Technical Field

[0001] This invention belongs to the field of fish pond circulation systems, and specifically relates to a fish pond circulating water treatment system. Background Technology

[0002] Traditional aquaculture relies heavily on frequent water exchanges to maintain the aquatic environment, consuming enormous amounts of water resources and making it susceptible to pollution from external sources. Furthermore, direct discharge of aquaculture wastewater can cause eutrophication and ecological imbalance in surrounding water bodies. Simultaneously, under high-density farming conditions, the continuous accumulation of organic matter such as fish excrement and uneaten feed leads to excessive concentrations of harmful substances like ammonia nitrogen and nitrite in the water, inducing fish diseases, resulting in decreased survival rates and economic losses. Summary of the Invention

[0003] The purpose of this invention is to provide a recirculating water treatment system for aquaculture ponds, aiming to solve the problems of frequent water changes and eutrophication during aquaculture. Compared with traditional aquaculture water recirculation treatment systems, this system has the advantages of low energy consumption, less reliance on equipment, ease of cleaning and maintenance, and low construction cost.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A circulating water treatment system for aquaculture ponds includes a circulating separation conical chamber, a brush chamber, an ultraviolet lamp chamber, a biological treatment tank, a fish pond, and a sewage discharge system.

[0005] The left side of the high-efficiency circulating water treatment system for aquaculture ponds is the water treatment functional area, consisting of a circulating separation conical chamber, a brush chamber, an ultraviolet lamp chamber, and a biological treatment tank from bottom to top. The right side is the fish pond. The circulating separation conical chamber has an inverted conical structure, with the bottom of the conical chamber connected to the sewage system. A first water outlet pipe is provided between the circulating separation conical chamber and the brush chamber, and the first water outlet pipe is located at the top of the circulating separation conical chamber.

[0006] The bottom of the brush compartment is provided with a slope with an inclination angle of 60°. Several rows of brushes are provided in the upper space of the slope. The brushes are detachably connected to the brush compartment. The bottom of the slope is connected to the sewage system. A second water outlet pipe is provided between the brush compartment and the ultraviolet lamp compartment.

[0007] The ultraviolet lamp chamber is equipped with several ultraviolet lamp tubes.

[0008] The bottom of the biochemical tank is covered with an aeration pipe network, and there are a large number of suspended biochemical balls in the tank. During operation, they are aerated through the aeration pipe network at the bottom of the tank and roll in the biochemical tank. A third water outlet pipe is provided between the biochemical tank and the fish pond, and the third water outlet pipe is located at the bottom of the fish pond wall.

[0009] Furthermore, the sewage system includes a sewage pipe and a drainage ditch at the bottom of the circulating separation conical chamber and the brush chamber. The drainage ditch is provided with a main drainage pipe at one end near the functional area. The third outlet pipe and the drainage ditch are located at the bottom of opposite sides of the fish pond, and the drainage ditch is also connected to the bottom of the circulating separation conical chamber.

[0010] Furthermore, a sewage suction pump is provided in the middle of the drainage ditch, and a sewage suction pipe is provided on the sewage suction pump. One end of the sewage suction pipe is fixedly connected to the sewage suction pump, and the opposite end is placed in the circulating separation cone-shaped chamber.

[0011] The beneficial effects of this invention are as follows: By circulating the fishpond water and setting up multiple water treatment zones to purify wastewater, the system achieves the goal of circulation, which not only saves water resources but also reduces the impact of pollution on external water sources. Furthermore, it solves the problem of eutrophication within the system. Compared with traditional aquaculture water circulation and treatment systems, this system has the advantages of low energy consumption, low dependence on equipment, easy cleaning and maintenance, and low construction costs.

[0012] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a fishpond recirculating water treatment system according to an embodiment of the present invention.

[0014] Figure 2 This is a top view schematic diagram of a fishpond recirculating water treatment system according to an embodiment of the present invention.

[0015] Figure 3 This is a cross-sectional schematic diagram of the functional area shown in an embodiment of the present invention.

[0016] Explanation of reference numerals: 1. Circulating separation conical chamber; 101. First outlet pipe; 2. Brush chamber; 201. Brush; 202. Second outlet pipe; 3. Ultraviolet lamp chamber; 301. Ultraviolet lamp tube; 4. Biological tank; 401. Biological ball; 402. Aeration pipe network; 5. Fish pond; 501. Third outlet pipe; 6. Sewage pipe; 7. Drainage ditch; 701. Main drainage pipe; 702. Sewage pump; 703. Sewage suction pipe. Detailed Implementation

[0017] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0021] Please see Figure 1-3 The fish pond circulating water treatment system shown in a preferred embodiment of this application includes a circulating separation conical chamber 1, a brush chamber 2, an ultraviolet lamp chamber 3, a biological treatment tank 4, a fish pond 5, and a sewage discharge system.

[0022] The left side of the high-efficiency recirculating water treatment system for the fishpond is the water treatment functional area, consisting of, from bottom to top, a recirculating separation conical chamber 1, a brush chamber 2, an ultraviolet lamp chamber 3, and a biological treatment tank 4. The right side is the fishpond 5. The recirculating separation conical chamber 1 has an inverted conical structure, with the bottom connected to the sewage system. Under normal conditions, the bottom of the conical chamber is closed. The recirculating separation conical chamber 1 is connected to a suction pipe 703, which is connected to a suction pump 702. The suction pump 702 drains the sewage ditch... Wastewater from compartment 7 is pumped into the circulating separation conical chamber 1 through suction pipe 703. The oblique flow at the pipe opening forms a circular water flow, which allows the wastewater to rotate and flow within the circulating separation conical chamber 1. The waste is concentrated in the center, and the waste is discharged into the sewage system by opening the bottom of the cone at regular intervals. A first water outlet pipe 101 is provided between the circulating separation conical chamber 1 and the brush chamber 2. The first water outlet pipe 101 is located at the upper part of the circulating separation conical chamber 1, which allows the clean water treated in the upper layer of the circulating separation conical chamber 1 to flow into the brush chamber 2.

[0023] The bottom of the brush chamber 2 is equipped with a slope with an inclination angle of 60°. This slope facilitates the concentrated settling of waste to the bottom drain pipe, preventing it from adhering to the pool wall. It also allows the wastewater to flow into the UV lamp chamber 3 as quickly as possible after the brush chamber 2 has completed solid-liquid separation of the waste. The upper space of the slope of the brush chamber 2 is equipped with several rows of brushes 201. The brushes 201 are detachably connected to the brush chamber 2. They can block moss, algae, and other waste in the water, slow down the water flow, and can be disassembled and cleaned periodically. The bottom of the slope is connected to the sewage system. Under normal conditions, the bottom of the slope is closed. When opened, it allows residual moss, algae, and other debris in the wastewater to be discharged into the sewage system. Without disassembling the brushes, a flexible hose can be connected to the fish pond inlet pipe to rinse the brushes and discharge them into the sewage system. A second outlet pipe 202 is provided between the brush chamber 2 and the UV lamp chamber 3, allowing the clean water treated by the brush chamber 2 to flow into the UV lamp chamber 3.

[0024] The ultraviolet lamp chamber 3 is equipped with several ultraviolet lamp tubes 301. The ultraviolet lamp tubes 301 can kill diseases, microorganisms and parasites in sewage, as well as inhibit algae in the water and improve water transparency. After the treated water is stored in the ultraviolet lamp chamber 3 for too long, it overflows and flows into the biological treatment tank 4.

[0025] The bottom of the biological treatment tank 4 is covered with an aeration pipe network 402, and there are a large number of suspended biological balls 401 in the tank. The biological balls 401 have an aeration function. When they are running, they are aerated through the aeration pipe network 402 at the bottom of the tank and roll in the biological treatment tank, which can decompose the ammonia nitrogen in the sewage. A third water outlet pipe 501 is provided between the biological treatment tank 4 and the fish pond 5. The third water outlet pipe 501 is located at the bottom of the wall of the fish pond 5 and opens towards the drainage ditch 7, which allows the clean water treated by the biological treatment tank 4 to flow into the fish pond 5 and pushes the sludge at the bottom of the fish pond 5 into the drainage ditch.

[0026] Preferably, the sewage system includes a sewage pipe 6 and a drainage ditch 7 at the bottom of the circulating separation conical chamber 1 and the brush chamber 2. The drainage ditch 7 is provided with a main drainage pipe 701 at one end near the functional area. The sewage pipe 6 discharges the sewage containing sludge from the circulating separation conical chamber 1 and the brush chamber 2 into the main drainage pipe 701. The third outlet pipe 501 and the drainage ditch 7 are located at the bottom of opposite sides of the fish pond 5, respectively. The clean water from the third outlet pipe 501 can be used to flush the sludge settled at the bottom of the fish pond 5 again and discharge the sludge into the drainage ditch 7.

[0027] Preferably, the sewage suction pump 702 can suck the sewage from the drainage ditch 7 into the circulating separation cone chamber 1 through the suction pipe 703 to form a circular water flow.

[0028] Working principle: Fish farming in fishpond 5 produces fish waste and uneaten feed, leading to eutrophication and algae growth. Wastewater is pumped into the circulating separation conical chamber 1 by suction pump 702 for primary water treatment, where larger solid particles such as fish waste and uneaten feed are separated and discharged via cyclone separation. The treated wastewater then flows through the first outlet pipe 101 into the brush chamber 2 for secondary water treatment, where smaller particles are filtered out. Finally, the treated wastewater flows through the second outlet pipe 202 into the ultraviolet lamp chamber 3 for tertiary water treatment. The ultraviolet lamp 301 kills diseases, microorganisms, and parasites in the sewage and controls algae. The treated sewage flows into the biological tank 4, where ammonia nitrogen is decomposed by aeration and biological balls 401. The treated sewage flows into the fish pond 5 through the third outlet pipe 501. The third outlet pipe 501 and the drainage ditch 7 are located at the bottom of opposite sides of the fish pond 5. The water discharged from the third outlet pipe 501 slowly pushes the fish pond water towards the drainage ditch 7, and the sewage suction pump 702 pumps the water back into the conical chamber, completing the water circulation.

[0029] Opening the drain pipe 6 at the bottom of the circulating separation conical chamber 1 and the brush chamber 2 allows the sewage in the circulating separation conical chamber 1 and the brush chamber 2 to flush the bottom sewage into the main drain pipe 701, allowing the sewage to flow out of the system.

[0030] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A recirculating water treatment system for a fish farm pond, characterized in that, The system comprises a circulation separation cone type bin (1), a brush bin (2), an ultraviolet lamp bin (3), a biochemical tank (4), a fish tank (5) and a sewage system. The left side area of the high-efficiency circulating water treatment system for fish culture tank is a functional area for water treatment, and comprises, from bottom to top, the circulation separation cone type bin (1), the brush bin (2), the ultraviolet lamp bin (3) and the biochemical tank (4); the right side area is the fish tank (5); the circulation separation cone type bin (1) is in an inverted cone structure, and the bottom of the cone is connected with the sewage system; a first water outlet pipe (101) is arranged between the circulation separation cone type bin (1) and the brush bin (2), and the first water outlet pipe (101) is located at the upper part of the circulation separation cone type bin (1). The brush bin (2) is provided with a slope at the bottom, the slope is inclined at an angle of 60°, a plurality of rows of brushes (201) are arranged in the upper space of the slope, the brushes (201) are detachably connected with the brush bin (2), the bottom of the slope is connected with the sewage system, and a second water outlet pipe (202) is arranged between the brush bin (2) and the ultraviolet lamp bin (3). A plurality of ultraviolet lamp tubes (301) are arranged in the ultraviolet lamp bin (3). The bottom of the biochemical tank (4) is provided with an aeration pipe network (402), and a plurality of biochemical balls (401) are arranged in the tank; a third water outlet pipe (501) is arranged between the biochemical tank (4) and the fish tank (5), and the third water outlet pipe (501) is located at the bottom of the tank wall of the fish tank (5).

2. A recirculating water treatment system for an aquaculture tank as claimed in claim 1 wherein, The sewage system comprises a sewage pipe (6) at the bottom of the circulation separation cone type bin (1) and the brush bin (2), and a drainage ditch (7); one end of the drainage ditch (7) close to the functional area is provided with a main drainage pipe (701); the third water outlet pipe (501) and the drainage ditch (7) are respectively located at the bottoms of the opposite sides of the fish tank (5), and the drainage ditch (7) is also connected with the bottom of the circulation separation cone type bin (1).

3. A recirculating water treatment system for an aquaculture tank as claimed in claim 2 wherein, A sewage suction pump (702) is arranged in the middle of the drainage ditch (7), and a sewage suction pipe (703) is arranged on the sewage suction pump (702); one end of the sewage suction pipe (703) is fixedly connected with the sewage suction pump (702), and the opposite end is arranged in the circulation separation cone type bin (1).