Integrated recirculating aquaculture purification system

Abstract

The invention provides an integrated circulating water culture purification system, relates to the technical field of aquaculture and water treatment, and solves the problems of large occupied area, long early-stage construction period, low water purification efficiency, poor stability and the like of the whole farm due to the fact that each culture pond needs to be provided with a water treatment system in the prior art. The integrated circulating water culture purification system comprises a culture pond group and hexagonal frames, a central culture pond is arranged in the hexagonal frame at the central position of the integrated circulating water culture purification system, and the other hexagonal frames are used for placing split culture ponds and purification mechanisms; the water inlet assembly is used for uniformly distributing the clean water treated by the purification mechanism into each culture pond; the drainage assembly is used for collecting and guiding wastewater in the culture ponds into the purification mechanism for water purification; and the pollution discharge assembly is also arranged on the hexagonal frame around the central culture pond and is communicated with pollution discharge pipelines of the central culture pond, the split culture ponds and the purification mechanism so as to discharge sludge impurities generated by the central culture pond, the split culture ponds and the purification mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of aquaculture and water treatment, and in particular to an integrated circulating water aquaculture purification system. Background Art

[0002] In recent years, with the continued growth of global demand for aquatic products, the aquaculture industry has undergone a significant transformation from a traditional extensive farming model to a modern intensive farming model. This shift reflects not only advances in aquaculture technology but also a growing awareness of sustainable development and environmental protection within the industry.

[0003] Intensive aquaculture, through increased inputs, such as the use of high-quality artificial feeds, has achieved multiple goals, including significantly increased yield per unit of water, shortened aquaculture cycles, and improved labor efficiency. However, this high-density aquaculture method also presents new challenges: the large amounts of leftover bait and biological waste exceed the decomposition capacity of natural microbial communities, disrupting the microecological balance within the water. This results in increased concentrations of organic matter, nitrogen, and phosphorus in the water, deteriorating water quality. If these pollutants are not properly treated and released directly into the environment, they will cause serious damage to the ecosystem.

[0004] Current aquaculture farms are typically designed with multiple independently operated aquaculture ponds arranged in a matrix. Each pond requires its own water treatment system, resulting in large farm footprints and long initial construction periods. Furthermore, recirculating aquaculture, a relatively recent development, still suffers from issues such as low water treatment precision, low purification efficiency, and poor purification stability.

[0005] Therefore, it is urgent to develop an integrated circulating aquaculture purification system to solve the above-mentioned technical problems. Summary of the Invention

[0006] The present invention aims to provide an integrated recirculating aquaculture purification system to address the existing technical issues of aquaculture farms, which are typically designed as multiple independently operated aquaculture ponds arranged in a matrix. Each pond requires its own water treatment system, resulting in large farm footprints, long initial construction periods, low water treatment and purification efficiency, and poor stability. The various technical benefits achieved by the preferred solutions provided by the present invention are detailed below.

[0007] To achieve the above objectives, the present invention provides the following technical solutions: The integrated circulating aquaculture purification system provided by the present invention comprises: A breeding pond group includes a central breeding pond and at least one split breeding pond, wherein the split breeding pond and a purification mechanism are arranged circumferentially around the central breeding pond; The culture pool group further comprises a plurality of hexagonal frames connected to each other in a honeycomb arrangement, wherein the central hexagonal frame is provided with a central culture pool, and the remaining hexagonal frames are used to house separate culture pools and purification mechanisms; The water inlet assembly is mounted on a hexagonal frame around the central aquaculture pool and is connected to the central aquaculture pool, each separate aquaculture pool, and the purification mechanism through a pipeline network, and is used to evenly distribute the clean water treated by the purification mechanism to each aquaculture pool; The drainage assembly is also arranged on the hexagonal frame around the central breeding pool and is connected to the central breeding pool, each branch breeding pool and the purification mechanism through respective discharge pipes, so as to collect and guide the wastewater in each breeding pool into the purification mechanism for water purification; The sewage discharge component is also arranged on the hexagonal frame around the central breeding pool, and is connected to the sewage discharge pipes of the central breeding pool, the separate breeding pools and the purification mechanism respectively, so as to discharge the sludge impurities generated therefrom.

[0008] Furthermore, each side of each hexagonal frame is provided with a dovetail groove and a dovetail bar extending along its height direction. The dovetail groove and the dovetail bar are both arranged on the outer side of the hexagonal frame. The two adjacent hexagonal frames are fixed by inserting the dovetail bar on one hexagonal frame into the corresponding dovetail groove of the other hexagonal frame, thereby forming a stable and easy-to-disassemble connection structure.

[0009] Furthermore, the drainage component includes a solid-liquid separation device installed in the hexagonal frame where the central breeding pool and each split breeding pool are located. The solid-liquid separation device is used to collect wastewater from the central breeding pool and the split breeding pool and separate impurities in the wastewater. The solid-liquid separation device is connected to the water purification mechanism to discharge the separated wastewater.

[0010] Furthermore, the solid-liquid separation device includes The outer pipe is fixedly connected to the hexagonal frame, and receives wastewater discharged from the central culture pond or the split culture pond from the top of the outer pipe. The outer pipe is connected to the sewage discharge component to discharge impurities generated after filtration; The inner tube is sleeved inside the outer tube and fixedly connected to the outer tube. A screen is provided on the circumferential side wall of the inner tube for filtering wastewater in the waste material. The inner tube and the water purification mechanism are used to extract the filtered wastewater; The filter assembly is arranged between the outer tube and the inner tube to enhance the cyclone filtration.

[0011] Furthermore, the filtering assembly includes a focusing funnel and a drainage funnel, the focusing funnel is arranged at the upper end of the inner tube, the focusing funnel is arranged at the lower end of the inner tube, the tip of the focusing funnel is facing the lower end of the inner tube, the tip of the focusing funnel is fixedly connected to the outer wall of the inner tube, the focusing funnel is penetrated by a spiral waste channel, which is used to form rotation during the flow of waste residue so that the water flow in the waste residue is close to the inner tube wall, the outer end of the drainage funnel is fixedly connected to the inner wall of the outer tube, the tip of the drainage funnel is facing the upper end of the inner tube and is fixedly connected, and there is a waste residue channel between the outer end of the drainage funnel and the inner wall of the outer tube.

[0012] Furthermore, the filter assembly includes a vortex blade and a drainage pipe. The vortex blade is rotatably installed on the inner tube and drives the vortex blade to rotate by sucking the wastewater in the inner tube. A paddle is fixedly connected to the outer circumferential side wall of the vortex blade for promoting the rotation in the drainage funnel. The drainage pipe is fixedly connected to the bottom surface of the drainage funnel and connected to the waste channel to extend the waste rotation path.

[0013] Furthermore, the central breeding pool and each of the separate breeding pools are provided with a plurality of overflow ports, which are arranged along the height direction of the central breeding pool and the separate breeding pools, and the diameters of the overflow ports decrease from top to bottom.

[0014] Furthermore, the bottom of the central breeding pond and each separate breeding pond is provided with a conical trough bottom, the center of the conical trough bottom is connected to the sewage discharge component, and the inclination angle of the conical trough bottom ranges from 37 degrees to 40 degrees.

[0015] Furthermore, the purification mechanism includes: A clean water tank is fixedly installed in the hexagonal frame, and the clean water tank is provided with a water inlet connected to the filter assembly and a drain connected to the water inlet assembly; A water inlet pump is connected between the water inlet of the clean water tank and the drainage assembly; The solid-liquid separation component is installed in the clean water tank and is used to separate and filter the wastewater that has just entered the clean water tank; The biochemical tank is arranged in the clean water tank and is connected to the solid-liquid separation component for biochemical treatment of the filtered wastewater; An ultraviolet disinfection device is connected to the biochemical tank and is used to perform ultraviolet disinfection on the wastewater after biochemical treatment; The water pump is connected to the ultraviolet disinfection device and the water inlet component respectively, and is used to discharge the treated wastewater into the central breeding pond and each separate breeding pond.

[0016] Furthermore, the solid-liquid separation component includes two ceramic membrane boxes, a accommodating cavity is opened in the clean water tank, the two ceramic boxes are symmetrically arranged in the clean water tank and are respectively provided with water inlets, the accommodating cavity is connected to the biochemical box for discharging the wastewater filtered by the ceramic membrane box, and a plurality of inclined ceramic membrane plates are arranged in the ceramic membrane box, and the inclined surface of the ceramic membrane plate faces the water inlet and is arranged opposite to the water inlet direction.

[0017] The integrated circulating aquaculture purification system of the present invention achieves significant technical effects through integrated design and optimized water flow management, as follows: Improve water resource utilization: By constructing a circulating waterway between the central aquaculture pond and the separate aquaculture ponds, the system enables purified water to be redistributed to each aquaculture pond. This not only reduces the demand for fresh water but also avoids the direct discharge of untreated wastewater, significantly increasing the reuse rate of water resources.

[0018] Enhance water quality stability: The system's purification mechanism continuously purifies the aquaculture water, effectively removing waste residues and impurities from the water and maintaining good water quality. A stable water quality environment is conducive to the healthy growth of aquatic animals, reduces the incidence of disease, and improves the success rate of aquaculture.

[0019] Simplify pollution control processes: The integrated design integrates multiple independently operated aquaculture ponds into a single system, with all ponds sharing a common set of water inlet, drainage, and sewage disposal components. This significantly simplifies wastewater management and pollution control processes on the farm. This centralized management approach not only reduces operational complexity but also facilitates unified monitoring and maintenance, improving management efficiency.

[0020] Modular scalability: Easily scalable: The hexagonal frame and dovetail groove and bar design make the integrated recirculating aquaculture purification system highly modular. Users can flexibly increase or decrease the number of individual aquaculture ponds based on actual needs without undergoing a major overhaul of the entire system. This flexibility is particularly useful for adjusting aquaculture space requirements during seasonal changes or during different growth stages.

[0021] Quick Installation and Disassembly: The dovetail groove and dovetail strip mechanism simplifies the installation process of the aquaculture pond, allowing workers to quickly add new aquaculture ponds or remove existing ones. This not only saves time and labor costs, but also reduces water quality fluctuations caused by construction, ensuring continuous and stable operation of the system.

[0022] Optimized use of space: Compact Layout: Compared to traditional rectangular or circular frames, the hexagonal frame can accommodate more aquaculture ponds within the same area, making more efficient use of limited space resources. This feature is particularly important in urban suburbs or island areas where land resources are limited.

[0023] Reduce dead zone: The honeycomb-like hexagonal frame design minimizes the "dead zones" (space that cannot be effectively utilized) that are inevitable in traditional matrix arrangements, further improving space utilization. This layout also promotes even water flow distribution, avoiding localized flow obstructions.

[0024] Structural stability and durability: Enhanced structural strength: The hexagonal frame itself has high structural stability and can withstand large external pressure without deformation. Combined with the dovetail groove and dovetail bar connection method, it can effectively transfer loads and enhance the integrity and durability of the entire system.

[0025] Adapt to complex terrain: This design is not only suitable for flat ground, but can also be appropriately adjusted according to specific site conditions to adapt to a certain slope or irregularly shaped surface, providing farms with greater site selection flexibility.

[0026] Maintenance convenience: Easy Cleaning and Maintenance: Because the various aquaculture ponds are connected in modular fashion, when a specific area needs cleaning or maintenance, the corresponding aquaculture pond can be directly separated without affecting the normal operation of other parts. In addition, this design also facilitates regular inspection and maintenance of the equipment, reducing long-term operating costs.

[0027] To sum up, the integrated circulating water aquaculture purification system of the present invention not only solves many problems existing in the traditional aquaculture model, but also demonstrates outstanding advantages in resource conservation and environmental protection, providing strong technical support for the development of modern aquaculture. It fully takes into account the importance of environmental protection, and through advanced water treatment technology and reasonable layout design, ensures that the wastewater from the farm meets the discharge standards, reduces the pressure on the surrounding environment, and meets the requirements of modern society for sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the present invention; Figure 2 This is a schematic cross-sectional view of the central culture pond and the separate culture ponds provided by an embodiment of the present invention: Figure 3 This is a schematic diagram of connecting two adjacent hexagonal frames provided by an embodiment of the present invention; Figure 4 Schematic diagram of the internal structure of the solid-liquid separation device provided in an embodiment of the present invention; Figure 5 is a schematic structural diagram of a purification mechanism provided by an embodiment of the present invention; Figure 6 is a front cross-sectional view of the internal structure of the purification mechanism provided by an embodiment of the present invention; Figure 7 It is a side sectional view of the internal structure of the purification mechanism provided by an embodiment of the present invention.

[0030] Explanation of reference numerals: 100, culture pond group; 110, central culture pond; 120, split culture pond; 130, overflow; 140, conical bottom; 200, hexagonal frame; 210, dovetail bar; 220, dovetail groove; 300, sewage discharge assembly; 310, sewage discharge ring; 320, sewage discharge pipe; 400, water inlet assembly; 410, water inlet pipe; 420, water inlet ring; 430, aeration device; 500, drainage assembly; 510, drainage pipe; 520, water inlet pump; 530, solid-liquid separation device; 531, Outer pipe; 532, sewage outlet; 533, guide pipe; 534, cover plate; 535, focusing funnel; 536, drainage funnel; 537, inner pipe; 538, vortex blade; 539, paddle; 540, waste channel; 541, drainage pipe; 542, drainage cavity; 600, purification mechanism; 610, clean water tank; 620, water inlet; 630, water pump; 640, ceramic membrane box; 650, ceramic membrane plate; 660, ultraviolet disinfection device; 670, biochemical box; 680, drainage pipe; 690, connecting pipe. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all methods obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that, unless otherwise specified, "plurality" means two or more. Terms such as "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," and "tail" are used to indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, terms such as "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention depending on the specific circumstances.

[0034] The following is combined with Figure 1 —7 This application is further described in detail. The embodiment of this application discloses an integrated circulating water aquaculture purification system.

[0035] Reference Figure 1 and Figure 2 As shown, the integrated recirculating aquaculture purification system includes multiple hexagonal frames 200 arranged in a columnar configuration and interconnected in a honeycomb arrangement. During use, the honeycomb-like arrangement of the hexagonal frames 200 maximizes space utilization, reduces floor space, and significantly improves space efficiency. In this example, seven hexagonal frames 200 are preferably assembled as a single unit; the number of hexagonal frames 200 can be adjusted based on the aquaculture situation to accommodate farms of varying sizes.

[0036] The aquaculture pond group 100 and the purification mechanism 600 are installed in the hexagonal frame 200 . The purification mechanism 600 is used to purify the wastewater and waste residue in the aquaculture pond group 100 .

[0037] The breeding pond group 100 includes a central breeding pond 110 located at the center of multiple hexagonal frames 200 and at least one split breeding pond 120. The split breeding ponds 120 and the purification mechanism 600 are arranged in a ring around the central breeding pond 110 within the remaining hexagonal frames 200. Each split breeding pond 120 can obtain a uniform water supply, which minimizes the distance between the split breeding ponds 120, facilitates monitoring and maintenance, and further improves the operating efficiency of the system.

[0038] A water inlet assembly 400 is mounted on a hexagonal frame 200 surrounding the central aquaculture pool 110. This assembly distributes clean water, treated by the purification mechanism 600, evenly to each of the separate aquaculture pools 120 via a network of pipes. This design ensures that each aquaculture pool receives high-quality water. Furthermore, the design of the water inlet assembly 400 takes into account the natural flow path of water, reducing flow resistance and improving water supply efficiency.

[0039] Also surrounding the central aquaculture pond 110 is a drainage assembly 500, which collects wastewater from the aquaculture ponds 100 and directs it to the purification mechanism 600 for further purification. The design of the drainage assembly 500 not only takes into account the natural flow path of water but also optimizes the piping layout to reduce flow resistance and improve drainage efficiency. This efficient drainage mechanism helps quickly remove harmful substances generated during the aquaculture process, maintaining clean water quality.

[0040] In order to better manage solid waste, sewage discharge components 300 are specially set around the central breeding pond 110. These sewage discharge components 300 are respectively connected to the sewage pipes 320 of the central breeding pond 110, the separate breeding ponds 120 and the purification mechanism 600, ensuring the effective discharge of sludge impurities.

[0041] The central aquaculture tank 110 and each of the separate aquaculture tanks 120 are each equipped with a conical bottom trough. The center of the conical bottom trough is connected to the sewage discharge assembly 300, and the angle of the conical bottom 140 ranges from 37 to 40 degrees. This conical bottom trough design not only optimizes the sludge settling and discharge process, but also indirectly improves the operating efficiency of the entire sewage treatment system. Because sludge can be discharged in a timely manner, the water quality in the sewage treatment tank is better maintained, the burden on subsequent treatment processes is reduced, and the service life of the equipment is extended.

[0042] Reference Figure 1 and Figure 3 As shown, one side of each hexagonal frame 200 is provided with a dovetail groove 220 and a dovetail bar 210 extending along its height direction. The dovetail bar 210 and the dovetail groove 220 are both provided on the outer side of the frame. When two adjacent hexagonal frames 200 are connected, the dovetail bar 210 on one frame is inserted into the corresponding dovetail groove 220 of the other frame to achieve a snap-on fixation, forming a stable and easy-to-assemble and disassemble connection structure. This modular design is not only convenient for installation and disassembly, but also allows the scale and layout of the system to be quickly adjusted as needed to adapt to different breeding needs. In addition, the coordinated use of the dovetail groove 220 and the dovetail bar 210 ensures a tight connection between the frames, enhances the structural stability of the entire system, and extends its service life.

[0043] Reference Figure 2As shown, the drainage assembly 500 includes a solid-liquid separation device 530 installed within the hexagonal frame 200 where the central culture tank 110 and each separate culture tank 120 are located. The solid-liquid separation device 530 is primarily used to collect wastewater from the central culture tank 110 and the separate culture tanks 120 and, through efficient sedimentation and filtration technology, ensures that the wastewater is effectively pre-treated before entering the purification mechanism 600.

[0044] The solid-liquid separation device 530 includes an outer tube 531 and an inner tube 537, wherein the outer tube 531 is fixedly connected to the inner wall of the hexagonal frame 200. The outer tube 531 is fixedly connected to the inner wall of the hexagonal frame 200 to ensure its stability and durability. The inner tube 537 is coaxially installed inside the outer tube 531, and an annular space is formed between the two to guide the water flow and promote solid-liquid separation. A screen is provided on the peripheral side of the inner tube 537, which can effectively filter large particles of waste in the wastewater, prevent these impurities from entering the subsequent purification system, and reduce the burden on the purification equipment. The bottom of the outer tube 531 is connected to the sewage discharge component 300 for discharging the waste after sedimentation and filtration.

[0045] The top of inner tube 537 is connected to purification mechanism 600 via a pipe. Purification mechanism 600 extracts the preliminarily filtered wastewater from inner tube 537 through suction. This design not only improves wastewater treatment efficiency but also ensures that the wastewater has undergone preliminary purification before entering purification mechanism 600, reducing energy consumption and chemical usage during the purification process.

[0046] The outer side of outer tube 531 is in close contact with the outer wall of central culture tank 110 or separate culture tank 120, ensuring smooth flow of water from the culture tank into solid-liquid separator 530. A sewage outlet 532 is provided on the side wall of outer tube 531. Sewage outlet 532 is directly connected to the inner cavity of outer tube 531, allowing wastewater to flow into solid-liquid separator 530.

[0047] Multiple overflow ports 130 are provided on the side of the central aquaculture tank 110 and each of the separate aquaculture tanks 120 corresponding to the outer tube 531. These ports 130 are used to drain wastewater and impurities from the central aquaculture tank 110 and the separate aquaculture tanks 120. These ports 130 are arranged along the height of the central aquaculture tank 110 or the separate aquaculture tanks 120, forming a multi-tiered drainage system. The ports 130 near the bottom of the central aquaculture tank 110 or the separate aquaculture tanks 120 have smaller diameters, while those near the top have larger diameters. This design, based on the principles of hydrodynamics, utilizes the water pressure differences at different heights to ensure that heavier solid impurities at the bottom are preferentially discharged through the smaller ports 130, while lighter suspended matter in the upper layer is discharged through the larger ports 130. This effectively separates impurities of varying densities into separate layers, preventing a large amount of impurities from simultaneously entering the solid-liquid separation device 530, reducing its processing load and improving the stability and reliability of the overall system.

[0048] Reference Figure 4 As shown, the solid-liquid separation device 530 also includes a focusing funnel 535 and a drainage funnel 536 respectively mounted on the inner tube 537. This design significantly improves the efficiency and effect of wastewater treatment by optimizing the water flow path and solid-liquid separation mechanism.

[0049] The converging funnel 535 is arranged near the upper end of the inner tube 537, with its inner wall fixedly connected to the inner wall of the inner tube 537, and its outer wall fixedly connected to the inner wall of the outer tube 531. The tip of the converging funnel 535 faces the lower end of the inner tube 537, forming a conical structure. A spiral waste channel 540 is provided inside the converging funnel 535. When waste residue and wastewater fall into the converging funnel 535, due to the design of the spiral channel, the waste residue and wastewater will form a strong rotational motion when entering the annular space. Due to the action of centrifugal force, solid particles with higher density are thrown to the wall of the cyclone and move downward along the wall, and finally move to the bottom of the annular space between the outer tube 531 and the inner tube 537. The lighter liquid forms an upward flow in the center part, approaches the inner tube 537 and enters the inner tube 537 through the screen on the inner tube 537, thereby achieving efficient solid-liquid separation.

[0050] The solid-liquid separation device 530 also includes a vortex blade 538 and a drainage pipe 541. The vortex blade 538 is installed on the top of the inner tube 537 and is rotatably installed. A cover plate 534 is provided on the top of the outer tube 531. A guide tube 533 for connecting to the inner tube 537 is provided on the cover plate 534. The vortex blade 538 is provided between the guide tube 533 and the inner tube 537. When the inner tube 537 extracts wastewater, its vortex blade 538 rotates, further enhancing the rotational motion of the water flow.

[0051] The drainage channel is fixedly connected to the bottom surface of the drainage funnel 536 and communicates with the waste channel 540 to extend the waste rotation path.

[0052] At least one paddle 539 is fixedly attached to the outer wall of the vortex blade 538. As the vortex blade 538 rotates, the paddle 539 scrapes the waste residue on the surface of the converging funnel 535, pushing the waste residue into the spiral waste channel 540. This design not only prevents waste residue from accumulating on the surface of the converging funnel 535 but also ensures that the waste residue enters the waste channel 540 smoothly, extending the waste's rotation path and further improving the solid-liquid separation effect.

[0053] The inner wall of the drainage funnel 536 is fixedly connected to the circumferential side wall of the inner tube 537. A waste residue channel is formed between the outer wall of the drainage funnel 536 and the inner wall of the outer tube 531. The tip of the drainage funnel 536 is directed toward the upper end of the inner tube 537. The outer wall of the drainage funnel 536 guides waste materials and waste residue, ensuring that the waste residue can smoothly enter the waste residue channel.

[0054] Drainage funnel 536 defines a drainage chamber 542, which communicates with inner tube 537, allowing preliminarily filtered wastewater to flow smoothly into inner tube 537. The surface of drainage chamber 542 is inclined, gradually sloping from the periphery of drainage funnel 536 toward its center. This design helps guide filtered wastewater into inner tube 537, reduces flow resistance, and increases the speed and efficiency of wastewater entry into inner tube 537.

[0055] The surface of the drainage funnel 536 is also provided with a screen for further filtering the waste residue. This screen not only intercepts larger particles of waste residue, but also prevents fine particles from entering the inner tube 537, ensuring that the water flow in the inner tube 537 remains clean.

[0056] The drainage assembly 500 also includes a drainage pipe 510 and an inlet pump 520. The drainage pipe 510 is arranged around the central culture pond 110 and is fixedly connected to the hexagonal frame 200. The guide pipe 533 of each solid-liquid separation device 530 is interconnected with the drainage pipe 510. The inlet pump 520 is installed at the connection point between the drainage pipe 510 and the purification mechanism 600 to suck the wastewater filtered by the inner tube 537 of the solid-liquid separation device 530 and discharge it into the purification mechanism 600.

[0057] Reference Figure 5 and Figure 6 As shown, the purification mechanism 600 includes a clean water tank 610 fixedly installed in the hexagonal frame 200 , and the clean water tank 610 is provided with a water inlet 620 connected to the water inlet pump 520 and a drain outlet connected to the water inlet assembly 400 .

[0058] Inside the clean water tank 610, a solid-liquid separation assembly, ultraviolet disinfection device 660, and biochemical tank 670 are arranged in sequence along the height direction. The solid-liquid separation assembly is connected to the water inlet pump 520. Wastewater pumped by the water inlet pump 520 first enters the solid-liquid separation assembly for preliminary treatment. Through the effective filtration of the solid-liquid separation assembly, large solid impurities in the wastewater are quickly removed, preventing these impurities from entering subsequent treatment units, thereby protecting the equipment from clogging and damage, and at the same time improving the removal efficiency of subsequent treatment units.

[0059] Reference Figure 6 and Figure 7 As shown, the solid-liquid separation device includes two ceramic membrane boxes 640 and multiple ceramic membrane plates 650. A receiving cavity is defined above the clean water tank 610, and the two ceramic membrane boxes 640 are installed within each cavity. Each ceramic membrane box 640 is connected to the water inlet pump 520 via an independent water inlet 620, ensuring that wastewater is evenly distributed between the two ceramic membrane boxes 640.

[0060] Multiple ceramic membrane plates 650 are arranged in two groups, corresponding to two ceramic membrane boxes 640. The ceramic membrane plates 650 are arranged at an angle, with their inclined surfaces facing the water inlet 620. This design ensures that wastewater is evenly distributed upon entering the ceramic membrane boxes 640, and is efficiently filtered by the ceramic membranes before ultimately flowing into the holding chamber. The ceramic membranes have high-precision filtration capabilities and can effectively remove tiny particles and suspended matter in the wastewater, such as insect eggs, microorganisms, and fine suspended particles (<30μm), further reducing the turbidity of the water, ensuring the purification efficiency of subsequent treatment units, and improving the stability of the entire system. Furthermore, the ceramic membranes can remove antibiotics such as norfloxacin added to the aquaculture environment, ensuring the water quality of aquaculture water and the safety of aquatic products.

[0061] Biochemical tank 670 is fixedly mounted on the bottom of clean water tank 610, forming a stable support structure. Biochemical tank 670 can be placed with biological fillers or microbial carriers to cultivate efficient microbial flora. These effectively degrade organic matter in wastewater, primarily removing ammonia nitrogen and nitrite, while reducing chemical oxygen demand (COD) and biochemical oxygen demand (BOD), ensuring that treated water meets aquaculture water quality requirements.

[0062] A connecting pipe 690 is provided between the biochemical tank 670 and the receiving chamber to guide the wastewater after being filtered by the ceramic membrane into the biochemical tank 670. In the biochemical tank 670, the wastewater is deeply degraded by microorganisms to remove organic pollutants and harmful substances.

[0063] A drainage pipe 680 is installed between the biochemical tank 670 and the ultraviolet disinfection device 660 to discharge the biochemically treated wastewater into the ultraviolet disinfection device 660. The ultraviolet disinfection device 660 kills pathogenic microorganisms in the water through high-intensity ultraviolet radiation, ensuring the safety of the discharged water.

[0064] The drain outlet of the clean water tank 610 is connected to a water pump 630, which is in communication with the ultraviolet disinfection device 660. Purified water, which has undergone ultraviolet disinfection, is pumped out by the water pump 630 and drained through the water inlet assembly 400 into the central aquaculture tank 110 and the separate aquaculture tanks 120, ensuring that the purified water can be stably and efficiently delivered to the target areas, avoiding problems such as unstable water flow or insufficient pressure.

[0065] Reference Figure 1 and Figure 2 As shown, the water inlet assembly 400 includes a water inlet pipe 410 and a water inlet ring 420. The water inlet ring 420 is arranged around the central breeding pond 110 and fixedly connected to the hexagonal frame 200. The design of the water inlet ring 420 allows the water flow to be evenly distributed in the annular path, ensuring the stability of the water flow. The purified water is first pumped out by the water pump 630 and transported to the water inlet ring 420 through the water inlet pipe 410. The water inlet ring 420 is arranged around the central breeding pond 110 to form an annular water flow channel. Subsequently, the water flow is evenly diverted to the top of the central breeding pond 110 and the split breeding pond 120 through multiple diversion ports on the water inlet ring 420.

[0066] The central culture pond 110 and the separate culture ponds 120 are also equipped with aeration devices 430, which increase the dissolved oxygen content in the water by introducing air or pure oxygen. Adequate dissolved oxygen is essential for the survival and metabolism of aquatic organisms, especially for fish cultured at high densities, where lack of oxygen can lead to suffocation or even death.

[0067] The sewage discharge assembly 300 includes a sewage pipe 320 and a sewage ring 310. The sewage ring 310 is also arranged around the central breeding pond 110 and is fixedly connected to the hexagonal frame 200 and is located at the bottom of the central breeding pond 110. The design of the sewage ring 310 allows waste residues and waste materials to be collected and discharged smoothly. During the wastewater treatment process, the waste residues and waste materials separated by the solid-liquid separation device 530 are combined with the untreated leftover bait, feces and other waste in the conical bottom trough at the bottom of the central breeding pond 110 and the separate breeding pond 120 through the sewage ring 310 and then discharged through the sewage pipe 320, ensuring that the waste residues and waste materials are effectively treated.

[0068] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. The integrated circulating water aquaculture purification system is characterized by: include: A breeding pond group (100) comprises a central breeding pond (110) and at least one split breeding pond (120), wherein the split breeding pond (120) and a purification mechanism (600) are arranged circumferentially around the central breeding pond (110); The culture pool group (100) further comprises a plurality of hexagonal frames (200) which are spliced ​​together to form a honeycomb arrangement, wherein a central culture pool (110) is arranged in the central hexagonal frame (200), and the remaining hexagonal frames (200) are used to house separate culture pools (120) and purification mechanisms (600); A water inlet assembly (400) is mounted on the hexagonal frame (200) around the central culture pool (110) and is connected to the central culture pool (110), each separate culture pool (120) and the purification mechanism (600) through a pipeline network, so as to evenly distribute clean water treated by the purification mechanism (600) to each culture pool; The drainage assembly (500) is also arranged on the hexagonal frame (200) around the central breeding pool (110), and is connected to the central breeding pool (110), each of the separate breeding pools (120), and the purification mechanism (600) via respective discharge pipes, so as to collect and guide the wastewater in each breeding pool into the purification mechanism (600) for water purification; The sewage discharge assembly (300) is also arranged on the hexagonal frame (200) around the central breeding pool (110), and is respectively interconnected with the sewage discharge pipes (320) of the central breeding pool (110), the separate breeding pools (120) and the purification mechanism (600) to discharge the sludge impurities generated by them.

2. The integrated circulating water aquaculture purification system according to claim 1, characterized in that: Each side of each hexagonal frame (200) is provided with a dovetail groove (220) and a dovetail bar (210) extending in the height direction thereof; the dovetail groove (220) and the dovetail bar (210) are both arranged on the outer side of the hexagonal frame (200); two adjacent hexagonal frames (200) are connected and fixed by inserting the dovetail bar (210) on one hexagonal frame (200) into the corresponding dovetail groove (220) of the other hexagonal frame (200), thereby forming a stable and easily disassembled connection structure.

3. The integrated circulating water aquaculture purification system according to claim 1, characterized in that: The drainage assembly (500) comprises a solid-liquid separation device (530) installed in a hexagonal frame (200) where the central breeding pool (110) and each of the separate breeding pools (120) are located. The solid-liquid separation device (530) is used to collect wastewater from the central breeding pool (110) and the separate breeding pools (120) and separate impurities from the wastewater. The solid-liquid separation device (530) is connected to a water purification mechanism to discharge the separated wastewater.

4. The integrated circulating water aquaculture purification system according to claim 3, characterized in that: The solid-liquid separation device (530) comprises The outer tube (531) is fixedly connected to the hexagonal frame (200), and the wastewater discharged from the central culture pond (110) or the split culture pond (120) is received at the top of the outer tube (531). The outer tube (531) is connected to the sewage discharge component (300) to discharge impurities generated after filtration; The inner tube (537) is sleeved inside the outer tube (531) and fixedly connected to the outer tube (531). A screen is provided on the circumferential side wall of the inner tube (537) for filtering waste water in the waste material. The inner tube (537) and the water purification mechanism are used to extract the filtered waste water. A filter assembly is arranged between the outer tube (531) and the inner tube (537) to enhance cyclone filtration.

5. The integrated circulating water aquaculture purification system according to claim 4, characterized in that: The filtering assembly comprises a flow-gathering funnel (535) and a drainage funnel (536); the flow-gathering funnel (535) is arranged at the upper end of the inner tube (537); the flow-gathering funnel (535) is arranged at the lower end of the inner tube (537); the tip of the flow-gathering funnel (535) faces the lower end of the inner tube (537); the tip of the flow-gathering funnel (535) is fixedly connected to the outer wall of the inner tube (537); and the flow-gathering funnel (535) is arranged at the upper end of the inner tube (537). A spiral waste channel (540) is provided through the inner tube (537) to rotate the waste during its flow so that water in the waste is close to the wall of the inner tube (537). The outer end of the drainage funnel (536) is fixedly connected to the inner wall of the outer tube (531). The tip of the drainage funnel (536) faces the upper end of the inner tube (537) and is fixedly connected thereto. A waste channel is provided between the outer end of the drainage funnel (536) and the inner wall of the outer tube (531).

6. The integrated circulating water aquaculture purification system according to claim 5, characterized in that: The filter assembly comprises a vortex blade (538) and a drainage pipe (541); the vortex blade (538) is rotatably mounted on the inner tube (537) and drives the vortex blade (538) to rotate by sucking wastewater in the inner tube (537); a paddle (539) for driving the drainage funnel (536) to rotate is fixedly connected to the outer circumferential side wall of the vortex blade (538); the drainage pipe (541) is fixedly connected to the bottom surface of the drainage funnel (536) and communicated with the waste channel (540) to extend the waste rotation path.

7. The integrated circulating water aquaculture purification system according to claim 3, characterized in that: The central culture pool (110) and each of the separate culture pools (120) are provided with a plurality of overflow ports (130), the plurality of overflow ports (130) being arranged in a height direction of the central culture pool (110) and the separate culture pools (120), and the calibers of the overflow ports (130) decrease from top to bottom.

8. The integrated circulating water aquaculture purification system according to claim 1, characterized in that: The bottom of the central culture pond (110) and each of the separate culture ponds (120) is provided with a conical groove bottom (140), the center of the conical groove bottom (140) is connected to the sewage discharge assembly (300), and the inclination angle of the conical groove bottom (140) ranges from 37 degrees to 40 degrees.

9. The integrated circulating water aquaculture purification system according to claim 7, characterized in that: The purification mechanism (600) comprises: A clean water tank (610) is fixedly installed in the hexagonal frame (200), wherein the clean water tank (610) is provided with a water inlet (620) connected to the filter assembly and a water outlet connected to the water inlet assembly (400); A water inlet pump (520) is connected between the water inlet (620) of the clean water tank (610) and the drainage assembly (500); A solid-liquid separation component is disposed in the clean water tank (610) and is used to separate and filter waste water that has just entered the clean water tank (610); The biochemical tank (670) is disposed in the clean water tank (610) and is connected to the solid-liquid separation component for biochemically treating the filtered wastewater; An ultraviolet disinfection device (660) is connected to the biochemical box (670) and is used to perform ultraviolet disinfection on the wastewater after biochemical treatment; The water pump (630) is respectively connected to the ultraviolet disinfection device (660) and the water inlet assembly (400), and is used to discharge the treated wastewater into the central culture pond (110) and each of the separate culture ponds (120).

10. The integrated circulating water aquaculture purification system according to claim 9, characterized in that: The solid-liquid separation component comprises two ceramic membrane boxes (640), a receiving cavity is provided in the clean water tank (610), the two ceramic boxes are symmetrically arranged in the clean water tank (610) and are respectively provided with water inlets (620), the receiving cavity is connected to the biochemical tank (670) for discharging wastewater filtered by the ceramic membrane box (640), and a plurality of inclined ceramic membrane plates (650) are provided in the ceramic membrane box (640), and the inclined surface of the ceramic membrane plate (650) faces the water inlet (620) and is arranged opposite to the water inlet direction.

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