High-dissolved-oxygen recirculating aquaculture system

Abstract

The utility model belongs to the technical field of aquaculture, and provides a high dissolved oxygen recirculating aquaculture system which comprises a culture pond, a water treatment mechanism and a pipeline assembly communicated with the culture pond and the water treatment mechanism, and the water treatment mechanism comprises a filter pond, a biochemical pond, an oxygenation pond and a sterilization pond which are communicated in sequence. The pipeline assembly comprises a filter pipe, a buffer tank, a water return pipe and a fresh water pipe, the filter pipe is vertically arranged in the culture pond, a plurality of through holes are formed in the pipe wall of the filter pipe at intervals in the axial direction, the buffer tank is arranged on one side of the culture pond, the bottom of the filter pipe is communicated with a water inlet of the buffer tank, and one end of the water return pipe is communicated with a water outlet of the buffer tank; a water inlet of the buffer tank is lower than a water outlet in the vertical direction, and a new water pipe is communicated with the culture pond and the disinfection pond; the high-dissolved-oxygen recirculating aquaculture system has the advantages of being simple and compact in structure, low in manufacturing cost and high in water resource utilization rate.

Description

Technical Field

[0001] This utility model relates to the field of aquaculture technology, and in particular to a high dissolved oxygen recirculating aquaculture system. Background Technology

[0002] Traditional aquaculture is usually carried out in natural water bodies such as fishponds or reservoirs. However, traditional fishpond or reservoir aquaculture is affected by many external factors, resulting in slow growth rates, low stocking densities, high risks, and significant susceptibility to climate and weather. Therefore, large-scale, intensive, and intelligent industrialized recirculating aquaculture systems represent an important direction for the future of aquaculture.

[0003] Recirculating aquaculture has significant advantages over outdoor aquaculture and has a very promising market prospect. However, existing traditional recirculating aquaculture systems also have certain drawbacks. The most obvious one is that the water circulation system is too complex, resulting in high manufacturing costs. Moreover, the use of more equipment leads to more equipment failures, resulting in a high failure rate, troublesome maintenance, and high costs. This also reduces the efficiency of the aquaculture system, increases aquaculture costs, and reduces aquaculture profits.

[0004] The technical problem to be solved by this utility model is: how to solve the problem that the existing recirculating aquaculture system has a complex structure, resulting in high manufacturing and maintenance costs. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a high dissolved oxygen recirculating aquaculture system, which has the characteristics of simple and compact structure and low construction cost.

[0006] The technical solution adopted by this utility model is as follows: a high dissolved oxygen recirculating aquaculture system, including an aquaculture pond, a water treatment mechanism, and a pipeline assembly connecting the aquaculture pond and the water treatment mechanism. The water treatment mechanism includes a filter pond, a biological treatment pond, an oxygenation pond, and a disinfection pond connected in sequence. The pipeline assembly includes a filter pipe, a buffer tank, a return water pipe, and a fresh water pipe. The filter pipe is vertically installed in the aquaculture pond, and the filter pipe has several through holes spaced apart on the pipe wall along the axial direction. The buffer tank is installed on one side of the aquaculture pond. The bottom of the filter pipe is connected to the inlet of the buffer tank. One end of the return water pipe is connected to the outlet of the buffer tank, and the other end is connected to the filter pond. The inlet of the buffer tank is lower than the outlet in the vertical direction. The fresh water pipe connects the aquaculture pond and the disinfection pond.

[0007] The high dissolved oxygen recirculating aquaculture system of this application features a simple and compact structure, low manufacturing cost, and high water resource utilization rate. Water from the aquaculture pond enters the buffer tank through a filter pipe. Because the inlet of the buffer tank is lower than the outlet, some heavier floating objects settle at the bottom of the buffer tank. Then, the water flowing out of the buffer tank enters the filter tank through a return pipe. The microfilter in the filter tank filters out the floating objects in the water. The filtered water enters the biological treatment tank, where microorganisms degrade pollutants in the water through biochemical reactions, effectively degrading harmful substances in the water and improving water quality. Subsequently, the water treated in the biological treatment tank flows into the aeration tank. Liquid oxygen is injected into the aeration tank to increase the oxygen content in the water. After aeration, the water enters the disinfection tank, where an ultraviolet device emits ultraviolet light to disinfect bacteria and viruses in the water. Finally, the treated water returns to the aquaculture pond through a new water pipe, forming a water cycle.

[0008] In some embodiments, the piping assembly also includes a tailwater pipe connected to the filter tank, and a drain outlet is provided at the bottom of the buffer tank, which is connected to the tailwater pipe through a first drain pipe.

[0009] Using the above technical solution, the solid impurities and sewage accumulated at the bottom of the buffer tank are periodically discharged into the tailwater pipe through the first sewage pipe, and finally fed into the water treatment facility for purification. This can make full use of water resources and reduce the pressure on water treatment under normal circumstances.

[0010] In some implementations, the bottom of the filter tube is connected to the inlet of the buffer tank via a balance tube, and the balance tube is connected to the tailwater pipe via a second drain pipe, on which a first control valve is installed.

[0011] Using the above technical solution, impurities will inevitably accumulate in the balance pipe after long-term use. When the impurities in the balance pipe accumulate to a certain amount, the first control valve is opened to discharge the impurities in the balance pipe into the tailwater pipe and then into the water treatment mechanism for treatment. During normal use, the first control valve is kept closed.

[0012] In some embodiments, the water treatment device further includes a vertical flow sedimentation unit. The inlet of the vertical flow sedimentation unit is connected to the bottom of the aquaculture pond through a first connecting pipe, and the outlet of the vertical flow sedimentation unit is connected to the return water pipe through a second connecting pipe. A second control valve is installed on the second connecting pipe. The bottom of the vertical flow sedimentation unit is connected to the tailwater pipe through a third sewage pipe. A third control valve is installed on the third sewage pipe.

[0013] Using the above technical solution, the vertical flow sedimentation tank settles the solid particles suspended in the water by gravity, thereby achieving liquid-solid separation and removing suspended solids from the wastewater to reduce the working pressure of the subsequent filtration tank. During normal use, the second and third control valves are kept closed. When it is necessary to replace the water in the aquaculture tank or perform deep cleaning, the second and third control valves are opened.

[0014] In some embodiments, a sludge collection trough is provided at the bottom of the aquaculture pond, a filter pipe passes through the sludge collection trough, and the end of the first connecting pipe away from the vertical flow sedimentator is connected to the sludge collection trough.

[0015] Using the above technical solution, the sludge collection trough set at the bottom of the aquaculture pond can collect the aquatic feces, feed residue, etc. deposited at the bottom of the aquaculture pond, so that they can be centrally treated through a vertical flow sedimentation device.

[0016] In some embodiments, the water treatment apparatus further includes a water replenishment tank, which is connected to a disinfection tank and an oxygenation tank. The water replenishment tank is connected to an external water source through a water replenishment pipe. A partition is provided between the water replenishment tank and the disinfection tank, and a connecting hole is provided at the bottom of the partition. The water replenishment tank and the oxygenation tank are connected through a first grid plate.

[0017] Using the above technical solution, the water replenishment pond is used to replenish the water volume of the aquaculture system. The water replenishment pond is set to be connected to the disinfection pond and the aeration pond, so that the newly added water can be oxygenated and disinfected to prevent the newly added water from affecting aquaculture.

[0018] In some embodiments, the water treatment apparatus also includes a heat source tank for regulating water temperature, which is connected to a makeup water tank via a heat pump pipe.

[0019] By adopting the above technical solution, when the aquatic products being farmed have high requirements for water temperature, the water temperature can be regulated by injecting hot water into the replenishment tank, which makes it easier to adjust the water temperature.

[0020] In some implementations, an overflow outlet is provided between the aquaculture pond and the buffer tank, and the height of the overflow outlet is higher than the outlet of the buffer tank in the vertical direction.

[0021] By adopting the above technical solution and setting an overflow outlet, the water level in the aquaculture pond can be prevented from becoming too high, and oil film and other floating objects on the surface of the aquaculture pond can be transferred to the buffer tank for removal.

[0022] In some implementations, a fourth control valve is installed between the new water pipe and the disinfection tank, and a fifth control valve is installed between the return water pipe and the filtration tank.

[0023] The above technical solution facilitates the control of the opening and closing of the new water pipe and the return water pipe. During normal use, the fourth and fifth control valves remain open. When maintenance or deep cleaning is required, the fourth and fifth control valves can be closed for easy operation.

[0024] In some implementations, the bottoms of the aquaculture ponds, biochemical ponds, and aeration ponds are all sloping.

[0025] By adopting the above technical solution, sediment can be easily concentrated at the lowest point of the slope, making it easier to treat and remove it. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a high dissolved oxygen recirculating aquaculture system according to a preferred embodiment of the present invention;

[0027] Figure 2 for Figure 1 The diagram shows the structure of the aquaculture pond, piping components, and vertical flow sedimentation unit in the high dissolved oxygen recirculating aquaculture system.

[0028] Figure 3 for Figure 2 Another structural schematic diagram of the aquaculture pond, piping assembly, and vertical flow sedimentation unit shown;

[0029] Figure 4 for Figure 2 Another structural schematic diagram of the aquaculture pond, piping assembly, and vertical flow sedimentation unit shown;

[0030] Figure 5 for Figure 1 The diagram shows the structure of the water treatment mechanism in a high dissolved oxygen recirculating aquaculture system.

[0031] In the diagram: 100, High dissolved oxygen recirculating aquaculture system; 10, Aquaculture pond; 11, Sludge collection trough; 12, Overflow outlet; 20, Water treatment unit; 21, Filter pond; 22, Biological pond; 23, Oxygenation pond; 24, Disinfection pond; 25, Vertical flow sedimentator; 26, Water replenishment pond; 30, Piping assembly; 31, Filter pipe; 32, Buffer tank; 33, Return water pipe; 34, Fresh water pipe; 35, Tailwater pipe; 36, First sewage pipe; 37, Balancing pipe; 38, Second sewage pipe; 39, Third sewage pipe; 41, First connecting pipe; 42, Second connecting pipe; 43, Water replenishment pipe; 44, Heat pump pipe; 45, Water supply pipe; 46, Third connecting pipe. Detailed Implementation

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. When the number of elements is referred to as "multiple," it can be any number of two or more. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended solely for the purpose of describing specific embodiments and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] Please see Figures 1 to 5 This invention discloses a high dissolved oxygen recirculating aquaculture system 100, comprising an aquaculture pond 10, a water treatment unit 20, and a pipeline assembly 30 connecting the aquaculture pond 10 and the water treatment unit 20. The water treatment unit 20 includes a filter pond 21, a biochemical pond 22, an oxygenation pond 23, and a disinfection pond 24 connected in sequence. The pipeline assembly 30 includes a filter pipe 31, a buffer tank 32, a return water pipe 33, and a fresh water pipe 34. The filter pipe 31 is vertically installed in the aquaculture pond 10, and the filter pipe 31 has several through holes spaced apart on its wall along the axial direction. The buffer tank 32 is installed on one side of the aquaculture pond 10, and the bottom of the filter pipe 31 is connected to the inlet of the buffer tank 32. One end of the return water pipe 33 is connected to the outlet of the buffer tank 32, and the other end is connected to the filter pond 21. The inlet of the buffer tank 32 is lower than the outlet in the vertical direction. The fresh water pipe 34 connects the aquaculture pond 10 and the disinfection pond 24.

[0036] The high dissolved oxygen recirculating aquaculture system 100 of this application features a simple and compact structure, low manufacturing cost, and high water resource utilization rate. Water from the aquaculture pond 10 enters the buffer tank 32 through the filter pipe 31. Because the inlet of the buffer tank 32 is lower than the outlet, some heavier floating objects settle at the bottom of the buffer tank 32. Then, the water flowing out of the buffer tank 32 enters the filter tank 21 through the return pipe 33. The microfilter in the filter tank 21 filters out the floating objects in the water. The filtered water then enters the biological treatment tank 22. The microorganisms in the biological treatment tank 22 degrade pollutants in the water through biochemical reactions, effectively degrading harmful substances in the water and improving water quality. The water treated by the biological treatment tank 22 then flows into the oxygenation tank 23. Liquid oxygen is injected into the oxygenation tank 23 to increase the oxygen content in the water. The oxygenated water then enters the disinfection tank 24, where the ultraviolet device emits ultraviolet light to disinfect bacteria and viruses in the water. Finally, the treated water returns to the aquaculture tank 10 through the new water pipe 34, forming a water cycle.

[0037] Preferably, an overflow outlet 12 is provided between the aquaculture pond 10 and the buffer tank 32, and the height of the overflow outlet 12 is higher than the outlet of the buffer tank 32 in the vertical direction. By providing the overflow outlet 12, the water level in the aquaculture pond 10 can be prevented from being too high, and oil film and other floating objects on the surface of the aquaculture pond 10 can be transferred to the buffer tank 32 for removal.

[0038] Preferably, the piping assembly 30 further includes a tailwater pipe 35 connected to the filter tank 21, and a drain outlet is provided at the bottom of the buffer tank 32, which is connected to the tailwater pipe 35 through a first drain pipe 36. Solid impurities and wastewater accumulated at the bottom of the buffer tank 32 periodically enter the tailwater pipe 35 through the first drain pipe 36, and are finally fed into the water treatment unit 20 for purification treatment, which can make full use of water resources and reduce the pressure of water treatment under normal circumstances.

[0039] Furthermore, the bottom of the filter pipe 31 is connected to the inlet of the buffer tank 32 via the balance pipe 37. The balance pipe 37 is connected to the tailwater pipe 35 via the second drain pipe 38, and a first control valve (not shown) is installed on the second drain pipe 38. After prolonged use, impurities will inevitably accumulate in the balance pipe 37. When a certain amount of impurities accumulate in the balance pipe 37, the first control valve is opened to discharge the impurities in the balance pipe 37 into the tailwater pipe 35 and then into the water treatment unit 20 for treatment. During normal use, the first control valve is kept closed.

[0040] Specifically, such as Figure 4As shown, the balance pipe 37 includes a vertical section and a horizontal section. The horizontal section is located at the bottom of the aquaculture pond 10, and both ends of the horizontal section are connected to the filter pipe 31 and the vertical section, respectively. The other end of the vertical section extends into the buffer tank 32. The vertical section and the filter pipe 31 are arranged parallel to each other. After a long period of use, sediment and sewage easily accumulate in the horizontal section. Therefore, the second sewage pipe 38 is connected to the connection between the vertical section and the horizontal section to facilitate the discharge of sediment and sewage in the balance pipe 37.

[0041] Preferably, the water treatment unit 20 further includes a vertical flow sedimentation tank 25. The inlet of the vertical flow sedimentation tank 25 is connected to the bottom of the aquaculture tank 10 through a first connecting pipe 41, and the outlet of the vertical flow sedimentation tank 25 is connected to the return water pipe 33 through a second connecting pipe 42. A second control valve (not shown) is installed on the second connecting pipe 42. The bottom of the vertical flow sedimentation tank 25 is connected to the tailwater pipe 35 through a third drain pipe 39. A third control valve (not shown) is installed on the third drain pipe 39. The vertical flow sedimentation tank 25 settles the solid particles suspended in the water by gravity, thereby achieving liquid-solid separation and removing suspended solids from the wastewater to reduce the working pressure of the subsequent filter tank 21. During normal use, the second and third control valves are kept closed. When it is necessary to replace the water in the aquaculture tank 10 or perform deep cleaning, the second and third control valves are opened.

[0042] As a further improvement to the above technical solution, a sludge collection trough 11 is provided at the bottom of the aquaculture pond 10, and a filter pipe 31 passes through the sludge collection trough 11. The end of the first connecting pipe 41 away from the vertical flow sedimentator 25 is connected to the sludge collection trough 11. The sludge collection trough 11 provided at the bottom of the aquaculture pond 10 can collect the aquatic feces, feed residue, etc. deposited at the bottom of the aquaculture pond, so that they can be centrally treated by the vertical flow sedimentator 25.

[0043] In this embodiment, there are ten aquaculture ponds 10, arranged in two parallel rows. To facilitate the connection between the buffer tank 32 and the return water pipe 33, a third connecting pipe 46 connects them. Similarly, to facilitate the connection between the new water pipe 34 and each aquaculture pond 10, each aquaculture pond 10 is equipped with at least one water supply pipe 45 connected to the new water pipe 34. Optionally, the water supply pipe 45 is positioned above the aquaculture pond 10, which can increase the oxygen content of the water in the aquaculture pond 10 under the impact of water flow. To facilitate the control of water supply to each aquaculture pond 10, each water supply pipe 45 is equipped with a control valve.

[0044] In other embodiments, the number of aquaculture ponds 10 can be increased or decreased according to actual needs, and the arrangement of each aquaculture pond 10 can be arranged according to the terrain.

[0045] In one embodiment, the water treatment unit 20 further includes a water replenishment tank 26, which is connected to the disinfection tank 24 and the aeration tank 23. The water replenishment tank 26 is connected to an external water source through a water replenishment pipe 43. A partition is provided between the water replenishment tank 26 and the disinfection tank 24, and a connecting hole is provided at the bottom of the partition. The water replenishment tank 26 and the aeration tank 23 are connected through a first mesh plate. The water replenishment tank 26 is used to replenish the water volume of the aquaculture system. By configuring the water replenishment tank 26 to be connected to the disinfection tank 24 and the aeration tank 23, the newly introduced water can be oxygenated and disinfected, preventing the newly added water from affecting aquaculture.

[0046] In one embodiment, the water treatment unit 20 further includes a heat source tank for regulating water temperature, which is connected to the water replenishment tank 26 via a heat pump pipe 44. When the aquatic products being farmed have high water temperature requirements, the water temperature can be regulated by injecting hot water into the water replenishment tank 26, making it easier to adjust the water temperature.

[0047] Optionally, a fourth control valve (not shown) is installed between the new water pipe 34 and the disinfection tank 24, and a fifth control valve (not shown) is installed between the return water pipe 33 and the filter tank 21. This facilitates the control of the opening and closing of the new water pipe 34 and the return water pipe 33. During normal use, the fourth and fifth control valves remain open. When maintenance or deep cleaning is required, the fourth and fifth control valves can be closed for easy operation.

[0048] Preferably, the bottoms of the aquaculture pond 10, the biological treatment pond 22, and the aeration pond 23 are all sloping. The sloping bottoms facilitate the concentration of sediment at the lowest point, making it easier to treat and remove it.

[0049] The high dissolved oxygen recirculating aquaculture system 100 of this application may also include a control mechanism (not shown in the figure). The control mechanism includes a PLC controller and several sensors. By setting the sensors, various parameters in the aquaculture simulation system can be monitored and transmitted to the PLC controller. The PLC controller then feeds back the relevant information to the aquaculture farmer so that the farmer can grasp the relevant data and adjust the aquaculture simulation system.

[0050] Optionally, the sensors include some or all of the following: pH sensor, dissolved oxygen sensor, conductivity sensor, turbidity sensor, residual chlorine sensor, ammonia nitrogen sensor, ORP sensor, and TOC sensor.

[0051] Preferably, the PLC controller can also be equipped with a wireless communication module. By setting up a wireless communication module, remote monitoring and control of the aquaculture simulation system can be achieved, which facilitates operation and reduces labor intensity.

[0052] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high dissolved oxygen recirculating aquaculture system, characterized in that, The system includes a breeding pond (10), a water treatment unit (20), and a piping assembly (30) connecting the breeding pond (10) and the water treatment unit (20). The water treatment unit (20) includes a filter tank (21), a biochemical tank (22), an oxygenation tank (23), and a disinfection tank (24) connected in sequence. The piping assembly (30) includes a filter pipe (31), a buffer tank (32), a return water pipe (33), and a fresh water pipe (34). The filter pipe (31) is vertically installed inside the breeding pond (10), and... The filter pipe (31) has several through holes spaced apart on the pipe wall along the axial direction. The buffer box (32) is set on one side of the breeding pond (10). The bottom of the filter pipe (31) is connected to the inlet of the buffer box (32). One end of the return water pipe (33) is connected to the outlet of the buffer box (32), and the other end is connected to the filter pool (21). The inlet of the buffer box (32) is lower than the outlet in the vertical direction. The new water pipe (34) connects the breeding pond (10) and the disinfection pool (24).

2. The high dissolved oxygen recirculating aquaculture system according to claim 1, characterized in that, The pipeline assembly (30) also includes a tailwater pipe (35) connected to the filter tank (21), and a drain outlet is provided at the bottom of the buffer tank (32), which is connected to the tailwater pipe (35) through a first drain pipe (36).

3. The high dissolved oxygen recirculating aquaculture system according to claim 2, characterized in that, The bottom of the filter pipe (31) is connected to the inlet of the buffer tank (32) through the balance pipe (37), and the balance pipe (37) is connected to the tailwater pipe (35) through the second sewage pipe (38), on which a first control valve is provided.

4. The high dissolved oxygen recirculating aquaculture system according to claim 2, characterized in that, The water treatment device (20) also includes a vertical flow sedimentation tank (25). The inlet of the vertical flow sedimentation tank (25) is connected to the bottom of the aquaculture pond (10) through a first connecting pipe (41). The outlet of the vertical flow sedimentation tank (25) is connected to the return water pipe (33) through a second connecting pipe (42). A second control valve is provided on the second connecting pipe (42). The bottom of the vertical flow sedimentation tank (25) is connected to the tailwater pipe (35) through a third sewage pipe (39). A third control valve is provided on the third sewage pipe (39).

5. The high dissolved oxygen recirculating aquaculture system according to claim 4, characterized in that, The bottom of the aquaculture pond (10) is provided with a sludge collection trough (11), the filter pipe (31) passes through the sludge collection trough (11), and the end of the first connecting pipe (41) away from the vertical flow sedimentator (25) is connected to the sludge collection trough (11).

6. The high dissolved oxygen recirculating aquaculture system according to claim 1, characterized in that, The water treatment unit (20) also includes a water replenishment tank (26), which is connected to the disinfection tank (24) and the oxygenation tank (23). The water replenishment tank (26) is connected to an external water source through a water replenishment pipe (43). A partition is provided between the water replenishment tank (26) and the disinfection tank (24). The bottom of the partition has a connecting hole. The water replenishment tank (26) and the oxygenation tank (23) are connected through a first grid plate.

7. The high dissolved oxygen recirculating aquaculture system according to claim 6, characterized in that, The water treatment unit (20) also includes a heat source pool for regulating water temperature, which is connected to the water replenishment pool (26) via a heat pump pipe (44).

8. The high dissolved oxygen recirculating aquaculture system according to claim 1, characterized in that, An overflow outlet (12) is provided between the aquaculture pond (10) and the buffer tank (32), and the height of the overflow outlet (12) is higher than the outlet of the buffer tank (32) in the vertical direction.

9. The high dissolved oxygen recirculating aquaculture system according to claim 1, characterized in that, A fourth control valve is provided between the new water pipe (34) and the disinfection tank (24), and a fifth control valve is provided between the return water pipe (33) and the filter tank (21).

10. The high dissolved oxygen recirculating aquaculture system according to claim 1, characterized in that, The bottoms of the aquaculture pond (10), biochemical pond (22) and oxygenation pond (23) are all sloping.

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