Four closed loop factory aquaculture circulating water treatment device

Abstract

The utility model relates to water treatment device technical field, and disclose a kind of four closed-loop factory water product breeding circulating water treatment device, including breeding pond, first filter unit, pump suction pond, second filter unit, third filter unit and fourth filter unit, and the first filter unit is used to filter solid suspended particles in water body. Water body is backflowed to breeding pond to form the first purification filtration closed loop after drainage and sewage device, first filter unit, water body is backflowed to breeding pond to form the second purification filtration closed loop after second filter unit, water body is backflowed to breeding pond to form the third purification filtration closed loop after third filter unit, water body is backflowed to breeding pond to form the fourth closed loop after fourth filter unit, four purification closed loop is independent, division of labor is clear, and the water treatment effect of four purification filtration closed loop improves gradually, so it can overall give consideration to water treatment efficiency and water treatment effect.

Description

Technical Field

[0001] This utility model relates to the field of water treatment device technology, and more specifically to a four-closed-loop factory-style aquaculture circulating water treatment device. Background Technology

[0002] In factory-scale aquaculture, maintaining water quality is crucial for aquatic product cultivation. Residual feed and feces constitute the main source of solid waste pollution in recirculating aquaculture systems. If these remain for too long, they can easily break down, dissolve, or even decompose, breeding bacteria and severely impacting water quality. The decomposition of unabsorbed feed and excreted feces in the aquaculture ponds leads to a significant increase in harmful substances such as BOD5, ammonia, nitrogen, phosphorus, and bacteria, damaging water quality, jeopardizing the healthy growth of farmed organisms, and significantly reducing their disease resistance, making them susceptible to large-scale disease outbreaks. Currently, large-scale water sterilization and ammonia nitrogen removal equipment is often expensive and has low adoption rates in China. While existing technologies rely solely on filtration to purify residual feed and feces, although low-cost, they have a high processing load and poor filtration efficiency. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, this utility model provides a four-closed-loop factory-style aquaculture recirculating water treatment device to solve the problems existing in the background art.

[0004] This utility model provides the following technical solution: a four-closed-loop factory-style aquaculture recirculating water treatment device, comprising an aquaculture pond, a first filtration unit, a pump suction tank, a second filtration unit, a third filtration unit, and a fourth filtration unit. The first filtration unit is used to filter solid suspended particles in the water; the second filtration unit is used to remove suspended solids from the water; the third filtration unit is used to remove ammonia nitrogen from the water; and the fourth filtration unit is used to remove carbon dioxide from the water. The bottom of the aquaculture pond is inverted conical, and a drain outlet is provided at the bottom of the aquaculture pond. The drain outlet of the aquaculture pond is connected to a drainage channel. The system includes a drainage and sewage discharge device. The output end of the drainage and sewage discharge device is connected to the first filtration unit through a drainage passage. The side wall of the aquaculture pond is provided with a first water inlet, a second water inlet, and a third water inlet. The first filtration unit has two drainage passages. The first drainage passage of the first filtration unit is connected to the interior of the aquaculture pond through the first water inlet. The water filtered by the first filtration unit flows back into the interior of the aquaculture pond through the first water inlet. The second drainage passage of the first filtration unit is connected to the pump suction pool. The pump suction pool is connected to the first water pump, the second water pump, and the third water pump through drainage passages.

[0005] Furthermore, the drain end of the first water pump is connected to the interior of the second filter unit through a drain passage. The first filter unit and the second filter unit share a first water inlet. The water filtered by the second filter unit flows back into the interior of the aquaculture pond through the first water inlet.

[0006] Furthermore, the drainage end of the second water pump is connected to the interior of the third filtration unit through a drainage passage. The second water pump draws water from the pump suction pool under pressure and filters it through the third filtration unit to remove ammonia nitrogen. The water filtered by the third filtration unit flows back into the aquaculture pond through the second inlet.

[0007] Furthermore, the drainage end of the third water pump is connected to the interior of the fourth filtration unit through a drainage passage. The third water pump draws water from the pump suction pool under pressure and removes carbon dioxide from the water through the fourth filtration unit. The water filtered by the fourth filtration unit flows back to the aquaculture pond through the third inlet.

[0008] Furthermore, the first, second, and third water inlets are located on the upper part of the same side wall of the aquaculture pond to promote the swirling of water within the pond.

[0009] Furthermore, the first filtration unit includes a microfilter with a 200-400 mesh screen, the second filtration unit includes a precision filter for removing suspended solids from the water, the third filtration unit includes a biological filter for removing ammonia nitrogen from the water, and the fourth filtration unit includes a carbon dioxide remover for removing carbon dioxide from the water.

[0010] Furthermore, an oxygenation mixer, a blower, and an ultraviolet sterilizer are provided between the third filtration unit and the aquaculture pond. The ultraviolet sterilizer is used to sterilize the water, and the oxygenation mixer is used to improve the dissolved oxygen effect of the water. The water discharged from the third filtration unit flows into the aquaculture pond through the third inlet after passing through the oxygenation mixer and the ultraviolet sterilizer in sequence.

[0011] The technical effects and advantages of this utility model are as follows: 1. In this utility model, the water flows back to the aquaculture pond after passing through the drainage and sewage discharge device and the first filtration unit to form the first purification and filtration closed loop. The water flows back to the aquaculture pond after passing through the second filtration unit to form the second purification and filtration closed loop. The water flows back to the aquaculture pond after passing through the third filtration unit to form the third purification and filtration closed loop. The water flows back to the aquaculture pond after passing through the fourth filtration unit to form the fourth closed loop. The four purification closed loops are independent of each other and have a clear division of labor. Moreover, the water treatment effect of the four purification and filtration closed loops increases step by step. In this way, the overall water treatment efficiency and water treatment effect can be well balanced.

[0012] 2. This utility model can purify water in stages, which is beneficial to improving the water purification and filtration effect. It is also convenient to operate, reliable in operation, and conducive to automation, thereby improving economic benefits.

[0013] 3. This utility model can reduce energy consumption while ensuring water quality, and can greatly reduce investment in facilities and equipment, which is conducive to its widespread application. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the process flow of this utility model.

[0015] The attached diagram is labeled as follows: 1. Aquaculture pond; 2. Drainage and sewage discharge device; 3. First filtration unit; 4. Pump suction tank; 5. First water pump; 6. Second filtration unit; 7. Second water pump; 8. Third filtration unit; 9. Oxygenation mixer; 10. Blower; 11. Ultraviolet sterilizer; 12. Third water pump; 13. Fourth filtration unit. Detailed Implementation

[0016] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The four-closed-loop industrialized aquaculture recirculating water treatment device involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] Example 1: like Figure 1As shown, a four-loop closed-loop industrialized aquaculture recirculating water treatment device includes an aquaculture pond 1, a first filtration unit 3, a pump suction tank 4, a second filtration unit 6, a third filtration unit 8, and a fourth filtration unit 13. The first filtration unit 3 is used to filter solid suspended particles in the water; the second filtration unit 6 is used to remove suspended solids from the water; the third filtration unit 8 is used to remove ammonia nitrogen from the water; and the fourth filtration unit 13 is used to remove carbon dioxide from the water. The bottom of the aquaculture pond 1 is inverted conical, and a drain outlet is provided at the bottom of the aquaculture pond 1. The drain outlet of the aquaculture pond 1 is connected to a drain discharge device 2 through a drainage passage. The output end of the drain discharge device 2 is connected to the first filtration unit 3 through the drainage passage. The side wall of the aquaculture pond 1 is provided with a first inlet, a second inlet, and a third inlet. Located on the upper part of the same side wall of the breeding pond 1, the first filtration unit 3 is used to promote the swirling of water in the breeding pond 1. The first filtration unit 3 has two drainage channels. The first drainage channel of the first filtration unit 3 is connected to the interior of the breeding pond 1 through the first inlet. The water filtered by the first filtration unit 3 flows back into the interior of the breeding pond 1 through the first inlet. The drain outlet of the breeding pond 1 is connected to the inlet of the drain and sewage discharger 2. The drain and sewage discharger 2 is used to discharge solid particles in the water that settles at the bottom of the breeding pond 1. After being filtered by the first filtration unit 3, the water flows back into the breeding pond 1 through the first inlet, forming a first purification and filtration closed loop. The first filtration unit 3 includes a microfilter, which includes a filter screen of 200 to 400 mesh. In this embodiment, for example, when the mesh size of the filter screen is 300 mesh, more than 50% of the suspended solid particles in the water can be removed in a timely and effective manner. The second drainage passage of the first filter unit 3 is connected to the pump suction pool 4. The pump suction pool 4 is connected to the first water pump 5, the second water pump 7 and the third water pump 12 through the drainage passage. If the water filtered by the first filter unit 3 needs to be further filtered, the water in the first filter unit 3 can be discharged into the pump suction pool 4 for subsequent filtration. The drain end of the first water pump 5 is connected to the interior of the second filter unit 6 through a drain passage. The first filter unit 3 and the second filter unit 6 share the first inlet. The water filtered by the second filter unit 6 flows back into the interior of the aquaculture pond 1 through the first inlet. The second purification filtration closed loop can be realized through the setting of the second filter unit 6. The second filter unit 6 includes a precision filter. The precision filter is used to remove suspended solids from the water. The precision filter can be a particulate media filter, such as a quartz sand filter or a multi-media filter, and is used to remove ultrafine particles from the water, such as removing residual feed residue. The precision filter is existing technology and will not be described in detail here. The drainage end of the second water pump 7 is connected to the interior of the third filtration unit 8 through a drainage passage. The third filtration unit 8 includes a biological filter, which is used to remove ammonia nitrogen from the water. The second water pump 7 pressurizes and draws water from the pump suction pool 4 and filters it through the third filtration unit 8 to remove ammonia nitrogen. The water filtered by the third filtration unit 8 flows back to the aquaculture pond 1 through the second inlet. The third filtration unit 8 can achieve a closed-loop purification filtration. An oxygenation mixer 9, a blower 10, and an ultraviolet sterilizer 11 are provided between the third filtration unit 8 and the aquaculture pond 1. The ultraviolet sterilizer 11 is used to sterilize the water, and the oxygenation mixer 9 is used to improve the dissolved oxygen effect of the water. The water discharged from the third filtration unit 8 flows into the aquaculture pond 1 through the third inlet after passing through the oxygenation mixer 9 and the ultraviolet sterilizer 11 in sequence. The oxygenation mixer 9, the blower 10, and the ultraviolet sterilizer 11 are all existing technologies and will not be described in detail here. The drain end of the third water pump 12 is connected to the interior of the fourth filtration unit 13 through a drainage passage. The third water pump 12 pressurizes and draws water from the pump suction tank 4, which then passes through the fourth filtration unit 13 to remove carbon dioxide. The filtered water is then returned to the aquaculture tank 1 through the third inlet. The fourth filtration unit 13 enables a fourth purification and filtration cycle. The fourth filtration unit 13 includes a carbon dioxide remover, which removes carbon dioxide from the water, reducing the CO2 in the effluent to 5 mg / L. It can prevent poisoning in farmed aquatic animals, because high concentrations of CO2 are harmful to farmed animals. The most obvious toxic effects are accelerated breathing, suffocation, and even death. The tolerance level of fish to CO2 varies depending on the species and growth stage of the fish. For example, the safe CO2 concentration for tilapia is 6 mg / L, while the concentration for sensitive fish is 20 mg / L. In a circulating water system without a CO2 removal device, the CO2 concentration continues to rise, increasing to 30-40 mg / L after 24 hours. Therefore, a CO2 removal device is effective in removing CO2.

[0018] In summary, as Figure 1 As shown, in use, the water in the aquaculture pond 1 is filtered by the drain and sewage discharger 2 and the first filter unit 3 and then flows back into the aquaculture pond 1 through the first inlet, forming the first purification and filtration closed loop of this embodiment. If further purification and filtration of wastewater is required, the water filtered by the first filter unit 3 can be discharged into the pump suction pool 4, and the water inside the pump suction pool 4 can be pumped into the second filter unit 6 by the first water pump 5 for purification and filtration, and then returned to the breeding pool 1 through the first water inlet. This is the second purification and filtration cycle. The water inside the pump suction pool 4 can also be pumped into the third filter unit 8 by the second water pump 7 for purification and filtration, and then returned to the breeding pool 1 through the second water inlet. This is the third purification and filtration cycle. The water inside the pump suction pool 4 can also be pumped into the fourth filter unit 13 by the third water pump 12 for purification and filtration, and then returned to the breeding pool 1 through the third water inlet. This is the fourth purification and filtration cycle. The first, second, third, and fourth purification and filtration cycles are independent of each other and have a clear division of labor. The water treatment effect of the four purification and filtration closed loops increases progressively. They can be selected according to filtration needs, thus achieving a good balance between water treatment efficiency and effect.

[0019] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The installation methods between equipment are also the same as conventional installation methods in the prior art. For example, the connection position of valve components is provided with anti-leakage rubber strips, the outside of threaded rods or lead rods is provided with dust covers, and the equipment can be driven by either built-in batteries or external power supply. The control method is automatic control by a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, this utility model will not explain the control method and circuit connection in detail. The external controller mentioned in the specification can play a control role for the electrical components mentioned in this article, and the external controller is a conventional known device.

[0020] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 four-closed-loop industrialized aquaculture recirculating water treatment device, comprising an aquaculture pond (1), a first filtration unit (3), a pump suction pond (4), a second filtration unit (6), a third filtration unit (8), and a fourth filtration unit (13), characterized in that, The bottom of the breeding pond (1) is inverted cone shape. The bottom of the breeding pond (1) is provided with a drain outlet. The drain outlet of the breeding pond (1) is connected to a drain discharge device (2) through a drainage passage. The output end of the drain discharge device (2) is connected to the first filter unit (3) through a drainage passage. The side wall of the breeding pond (1) is provided with a first water inlet, a second water inlet and a third water inlet. The first filter unit (3) has two drainage passages. The first drainage passage of the first filter unit (3) is connected to the inside of the breeding pond (1) through the first water inlet. The water filtered by the first filter unit (3) flows back into the inside of the breeding pond (1) through the first water inlet. The second drainage passage of the first filter unit (3) is connected to the pump suction pool (4). The pump suction pool (4) is connected to the first water pump (5), the second water pump (7) and the third water pump (12) through drainage passages.

2. The four-closed-loop industrialized aquaculture recirculating water treatment device according to claim 1, characterized in that: The drain end of the first water pump (5) is connected to the interior of the second filter unit (6) through the drain passage. The first filter unit (3) and the second filter unit (6) share the first water inlet. The water filtered by the second filter unit (6) flows back into the interior of the aquaculture pond (1) through the first water inlet.

3. The four-closed-loop industrialized aquaculture recirculating water treatment device according to claim 1, characterized in that: The drainage end of the second water pump (7) is connected to the interior of the third filter unit (8) through the drainage passage. The water filtered by the third filter unit (8) flows back to the aquaculture pond (1) through the second water inlet.

4. The four-closed-loop industrialized aquaculture recirculating water treatment device according to claim 1, characterized in that: The drainage end of the third water pump (12) is connected to the interior of the fourth filter unit (13) through the drainage passage. The water filtered by the fourth filter unit (13) flows back to the aquaculture pond (1) through the third water inlet.

5. The four-closed-loop industrialized aquaculture recirculating water treatment device according to claim 1, characterized in that: The first, second and third water inlets are located on the upper part of the same side wall of the aquaculture pond (1).

6. The four-closed-loop industrialized aquaculture recirculating water treatment device according to claim 1, characterized in that: The first filtration unit (3) includes a microfilter, the microfilter includes a 200-400 mesh filter screen, the second filtration unit (6) includes a precision filter, the third filtration unit (8) includes a biological filter, and the fourth filtration unit (13) includes a carbon dioxide remover.

7. The four-closed-loop industrialized aquaculture recirculating water treatment device according to claim 1, characterized in that: An oxygenation mixer (9), a blower (10), and an ultraviolet sterilizer (11) are provided between the third filtration unit (8) and the aquaculture pond (1). The water discharged from the third filtration unit (8) flows into the aquaculture pond (1) through the third inlet after passing through the oxygenation mixer (9) and the ultraviolet sterilizer (11) in sequence.

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