Automatic cleaning ecological breeding system for haminoeaves crosseae

Abstract

The application discloses an automatic cleaning ecological breeding system for Hemifusus ternatanus, which comprises a breeding pond and a gas-water mixed backwashing device. The bottom of the breeding pond is provided with a partition layer. The gas-water mixed backwashing device comprises a gas source assembly for providing compressed gas, a backwashing water source assembly for providing backwashing water and a backwashing pipe uniformly laid in the partition layer. The gas outlet pipe of the gas source assembly and the water outlet pipe of the backwashing water source assembly are connected in parallel and then connected in series with the backwashing pipe. A plurality of nozzles for mixing and spraying water and gas are arranged on the backwashing pipe. The automatic cleaning ecological breeding system for Hemifusus ternatanus can fully mix gas and water and reversely wash the sand layer by using the gas-water mixed backwashing device, so that the sand turning effect is remarkable, and the pollutants in the sand layer can be effectively cleaned.

Description

Technical Field

[0001] This invention relates to the field of aquaculture technology, specifically to an automatic cleaning and ecological aquaculture system for the spotted snail. Background Technology

[0002] The Oriental Wind Snail (Babylonia areolata, commonly known as the Flower Snail) is rich in nutrients and has delicious meat, making it widely popular. It is in high demand and suitable for factory farming, making it an important species for coastal marine shellfish aquaculture with broad development prospects.

[0003] Currently, the factory farming of the East Wind Snail mainly adopts the land-based cement pond flow-through culture method, which has the following drawbacks:

[0004] 1. Regular sand cleaning and contaminant removal are necessary. In artificial breeding, *Bombyx mori* (a type of snail) require a resting and hiding place, typically achieved by adding a 5-7cm thick layer of sand to the breeding pond. However, as the breeding cycle extends, snail excrement, feed residue, and dead microorganisms accumulate in the sand, leading to excessive contaminants, fermentation, and decay, causing the sand surface to turn black and smelly. These contaminants reduce dissolved oxygen levels and increase toxin content, easily causing symptoms such as head hardening, turning over, and molting in the snails, ultimately leading to death. Therefore, measures need to be taken to improve the breeding environment, regularly cleaning contaminants from the sand layer to maintain a clean and healthy sand bed, reducing disease occurrence and improving the survival rate of the snails.

[0005] 2. High water quality requirements. The African whelk has a short intestine and relies mainly on microbial enzymes in its intestinal mucus to dissolve food and aid absorption. Therefore, using biological agents or chemical treatments for water can damage the digestive enzymes in the whelk's intestines, leading to mass mortality.

[0006] 3. High water demand. The farming method for *Bombyx mori* (a type of whelk) relies heavily on a continuous flow of water, requiring a daily water exchange of 300-500%. However, due to natural factors such as tides, water can only be pumped out for 6-8 hours daily. This insufficient water exchange often leads to regurgitation, intestinal discomfort, and mass mortality in the whelks after feeding. Furthermore, prolonged flowing water farming easily results in cross-infection, unstable microbial levels and water quality, triggering stress responses in the whelks and leading to conditional diseases. Summary of the Invention

[0007] Therefore, the present invention provides an automatic cleaning and ecological aquaculture system for the spotted conch to solve one or more of the above-mentioned problems.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] An automatic cleaning ecological aquaculture system for the square-spotted conch includes an aquaculture pond and an air-water mixing backwashing device. The bottom of the aquaculture pond is provided with a partition layer. The air-water mixing backwashing device includes an air source component for providing compressed air, a backwash water source component for providing backwash water, and a backwash pipe evenly laid in the partition layer. The air outlet pipe of the air source component and the water outlet pipe of the backwash water source component are connected in parallel and then connected in series with the backwash pipe. The backwash pipe is provided with multiple nozzles for spraying water and air mixed together.

[0010] Furthermore, an airflow control valve assembly is connected in series on the air outlet pipe of the air source assembly, and an air inlet check valve is connected in series at the rear end of the airflow control valve assembly. A water flow control valve assembly is connected in series on the water outlet pipe of the backwash water source assembly, and a backwash water inlet valve is connected in series at the rear end of the water flow control valve assembly. The rear end of the air inlet check valve and the rear end of the backwash water inlet valve are connected in parallel and then connected in series with the backwash pipe.

[0011] Furthermore, the air source assembly includes a compressor and a pressure stabilizing tank, the air outlet of the compressor is connected to the air inlet of the pressure stabilizing tank, and the air outlet of the pressure stabilizing tank is connected to the front end of the airflow control valve assembly; the backwash water source assembly includes a backwash variable frequency water pump, and the water outlet of the backwash variable frequency water pump is connected to the front end of the water flow control valve assembly.

[0012] Furthermore, the aquaculture pond is inclined, and an internal circulation filtration system is provided at the lower end of the aquaculture pond. The internal circulation filtration system is used to physically filter, sterilize, and deaerate the water in the aquaculture pond before re-introducing it into the aquaculture pond.

[0013] Furthermore, the internal circulation filtration system includes a physical filtration zone, a sterilization zone, a biochemical culture filtration zone, and a degassing zone through which water flows in sequence. Each zone adopts an upper inlet and lower outlet water method. Adjacent zones are connected by a connecting channel, which connects the outlet of the previous zone and the inlet of the next zone. The height of the inlet of the next zone is higher than the height of the outlet of the previous zone, but the height of the inlet of the next zone is lower than the height of the inlet of the previous zone.

[0014] Furthermore, the internal circulation filtration system also includes an elevation zone connected to the outlet of the degassing zone. An elevation pump is provided in the elevation zone. The outlet of the elevation pump is connected to the inlet of a vertical elevation pipe. The outlet of the elevation pipe is connected to the inlet of a drip pipe that is horizontally arranged above the aquaculture pond. Multiple evenly distributed drip nozzles are provided on the lower side of the drip pipe.

[0015] Furthermore, the lifting zone and the partition are connected by a water guiding channel.

[0016] Furthermore, the automatic cleaning ecological aquaculture system also includes a protein ozone oxidation system, which is used to sterilize the raw water before it is placed into the aquaculture pond with ozone.

[0017] Furthermore, the protein ozone oxidation system includes an ozone generator, a needle-blade variable frequency water pump, a Venturi jet injector, and an ozone sterilization reaction cylinder. The outlet of the ozone generator is connected to the side inlet of the Venturi jet injector, the outlet of the needle-blade variable frequency water pump is connected to the main inlet of the Venturi jet injector, the outlet of the Venturi jet injector is connected to the inlet of the ozone sterilization reaction cylinder, and a dispersing baffle connected to the inlet of the ozone sterilization reaction cylinder and a backflow baffle with inverted holes located above the dispersing baffle are provided inside the ozone sterilization reaction cylinder. The outlet of the ozone sterilization reaction cylinder is connected to the aquaculture pond.

[0018] Furthermore, the protein ozone oxidation system also includes an ozone recovery pipe, the first end of which is connected to the top of the ozone sterilization reaction cylinder, and the second end of which is connected to the pipeline between the outlet of the ozone generator and the side inlet of the Venturi jet. An ozone recovery check valve is connected in series on the ozone recovery pipe.

[0019] The present invention has the following advantages:

[0020] 1. The air-water mixing backwashing device fully mixes air and water and backwashes the sand layer, resulting in a significant sand-turning effect and effectively cleaning pollutants from the sand layer;

[0021] 2. The technical solution of using an independent internal circulation filtration system combined with an inclined aquaculture pond effectively improves water quality, reduces energy consumption, and reduces water demand.

[0022] 3. Using a protein ozone oxidation system to treat raw water can effectively remove harmful substances such as ammonia nitrogen and nitrite, and kill viruses and bacteria in the water. Attached Figure Description

[0023] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0024] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0025] Figure 1 This invention provides a schematic diagram of the structure of the breeding pond and the internal circulation filtration system of an automatic cleaning ecological breeding system for the spotted snail, as shown in an embodiment of the invention.

[0026] Figure 2 This is a schematic diagram of the air-water mixing backwashing device of the automatic cleaning ecological aquaculture system for the spotted conch provided in an embodiment of the present invention;

[0027] Figure 3 for Figure 2 Enlarged view of A in the middle;

[0028] Figure 4 This is a schematic diagram of the structure of the first part of the internal circulation filtration system of the automatic cleaning ecological aquaculture system for the spotted conch provided in an embodiment of the present invention (and...). Figure 5 (The second part is connected);

[0029] Figure 5 This is a schematic diagram of the second part of the internal circulation filtration system of the automatic cleaning ecological aquaculture system for the spotted conch provided in an embodiment of the present invention (and...). Figure 4 (The first part is connected);

[0030] Figure 6 This is a schematic diagram of the protein ozone oxidation system in the automatic cleaning ecological aquaculture system for the spotted snail provided in an embodiment of the present invention.

[0031] In the picture:

[0032] 1-Aquaculture pond, 101-Sand layer, 102-Partition layer;

[0033] 2-Air-water mixing backwashing device, 201-Compressor, 202-Pressure stabilizing tank, 203-Airflow control valve group, 204-Inlet check valve, 205-Backwash variable frequency water pump, 206-Water flow control valve group, 207-Backwash water inlet valve, 208-Backwash pipe, 209-Nozzle;

[0034] 3-Internal circulation filtration system, 301-Physical filtration zone, 302-Filter cotton, 303-Sterilization zone, 304-Ultraviolet germicidal lamp, 305-Biochemical culture filtration zone, 306-Oyster shell, 307-Degassing zone, 308-Kelp, 309-Connecting channel, 310-Lifting zone, 311-Lifting water pump, 312-Lifting pipe, 313-Drip pipe, 314-Drip nozzle, 315-Water guiding channel;

[0035] 4-Protein ozone oxidation system, 401-Ozone generator, 402-Needle-blade variable frequency water pump, 403-Venturi jet injector, 404-Ozone sterilization reaction cylinder, 405-Dispersion baffle, 406-Backflow baffle with inverted hole, 407-Ozone recovery pipe, 408-Ozone recovery check valve, 409-Ozone concentration detection device. Detailed Implementation

[0036] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] The terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0038] like Figure 1-6 As shown, this embodiment provides an automatic cleaning ecological aquaculture system for the spotted snail, including an aquaculture pond 1 and an air-water mixing backwashing device 2. The bottom of the aquaculture pond 1 is provided with a partition layer 102. The air-water mixing backwashing device 2 includes an air source component for providing compressed air, a backwash water source component for providing backwash water, and a backwash pipe 208 evenly laid in the partition layer 102. The air outlet pipe of the air source component and the water outlet pipe of the backwash water source component are connected in parallel and then connected in series with the backwash pipe 208. The backwash pipe 208 is provided with multiple nozzles 209 for spraying water and air mixture. The top of the partition layer 102 is generally an aquaculture net, on which a sand layer 101 is laid.

[0039] The air-water mixing backwashing device 2 is used to fully mix air and water and backwash the sand layer 101, resulting in a significant sand-turning effect and effectively cleaning up pollutants in the sand layer 101.

[0040] An airflow control valve assembly 203 is connected in series to the air outlet pipe of the air source component. An air inlet check valve 204 is connected in series to the rear end of the airflow control valve assembly 203. A water flow control valve assembly 206 is connected in series to the water outlet pipe of the backwash water source component. A backwash water inlet valve 207 is connected in series to the rear end of the water flow control valve assembly 206. The rear ends of the air inlet check valve 204 and the rear ends of the backwash water inlet valve 207 are connected in parallel and then connected in series to the backwash pipe 208. The air outlet pipe and water outlet pipe do not refer to a single pipe; they can be multiple pipes connected sequentially. "In series" means connecting between two connected pipes. "Rear end series connection" does not mean a direct connection; it can also mean connecting one pipe first and then connecting the corresponding valve (e.g., the rear end of the backwash water inlet valve 207 is connected to one end of a pipe, and the other end of that pipe is connected to the backwash water inlet valve 207).

[0041] The air intake volume is controlled by the airflow control valve group 203, the backwash water volume is controlled by the water flow control valve group 206, the air intake check valve 204 can prevent backwash water from flowing back into the air circuit, and the backwash water inlet valve 207 can prevent water in the aquaculture tank 1 from flowing back into the backwash water circuit when backwashing is not performed.

[0042] The air supply assembly includes a compressor 201 and a pressure stabilizing tank 202. The air outlet of the compressor 201 is connected to the air inlet of the pressure stabilizing tank 202, and the air outlet of the pressure stabilizing tank 202 is connected to the front end of the airflow control valve assembly 203. The backwash water supply assembly includes a backwash variable frequency water pump 205, and the water outlet of the backwash variable frequency water pump 205 is connected to the front end of the water flow control valve assembly 206. The connection between the air outlet of the pressure stabilizing tank 202 and the front end of the airflow control valve assembly 203, and the connection between the water outlet of the backwash variable frequency water pump 205 and the front end of the water flow control valve assembly 206, can be direct or via pipes. Pressure gauges and flow meters can be installed on the pressure stabilizing tank 202 or the air outlet pipe, and pressure gauges and flow meters can also be installed on the water outlet pipe.

[0043] The compressor 201 compresses air, the pressure stabilizing tank 202 provides a large quantity of compressed air with stable pressure, and the backwash variable frequency water pump 205 provides backwash water with a certain pressure.

[0044] The aquaculture pond 1 is inclined, and an internal circulation filtration system 3 is installed at the lower end of the aquaculture pond 1. The internal circulation filtration system 3 is used to physically filter, sterilize, and deaerate the water in the aquaculture pond 1 before re-introducing it into the aquaculture pond 1. The inclination angle of the pond bottom is generally 4-7°, preferably 5°.

[0045] The technical solution of using an independent internal circulation filtration system 3 combined with an inclined aquaculture pond 1 effectively improves water quality, reduces energy consumption, and reduces water demand.

[0046] The internal circulation filtration system 3 includes a physical filtration zone 301, a sterilization zone 303, a biochemical culture filtration zone 305, and a degassing zone 307 through which water flows sequentially. Each zone adopts an upper inlet and lower outlet water configuration. Adjacent zones are connected by a connecting channel 309, which connects the outlet of the preceding zone to the inlet of the following zone. The inlet of the following zone is higher than the outlet of the preceding zone, but lower than the inlet of the preceding zone. Optionally, the physical filtration zone 301 contains filter cotton 302, etc., for filtering physical impurities; the sterilization zone 303 contains ultraviolet germicidal lamps 304, etc., for sterilization and disinfection; the biochemical culture filtration zone 305 contains oyster shells 306 stacked to a certain height, with nitrifying bacteria on the shells 306 to consume substances such as ammonia nitrogen; the degassing zone 307 cultivates a large amount of grape algae or kelp 308, etc., to consume waste gas (mainly gases useless for aquaculture). An internal circulation filtration system 3 is used to treat the aquaculture water (specifically, the water that has entered the aquaculture pond 1 for internal circulation, as opposed to the original water that has not entered the aquaculture pond 1), and the treatment effect is good. The height design of the inlet and outlet of each zone, combined with the inclined aquaculture pond 1, allows the aquaculture water to flow autonomously without power, passing through each zone in sequence and being treated, resulting in significant energy-saving effects.

[0047] The internal circulation filtration system 3 also includes an elevation zone 310 connected to the outlet of the deaeration zone 307. An elevation pump 311 is installed in the elevation zone 310. The outlet of the elevation pump 311 is connected to the inlet of a vertical elevation pipe 312. The outlet of the elevation pipe 312 is connected to the inlet of a drip pipe 313 horizontally positioned above the aquaculture pond 1. Multiple evenly distributed drip nozzles 314 are located on the lower side of the drip pipe 313. The elevation pump 311 pumps water from the elevation zone 310 back into the aquaculture pond 1 (the pond above the sand layer 101), ensuring internal circulation and maintaining a low water level in the elevation zone 310 to guarantee the "non-powered, autonomous flow of aquaculture water" mentioned above.

[0048] The water in the lifting zone 310 is pumped back into the aquaculture pond 1 through the lifting pipe 312 and the drip pipe 313 by the lifting pump 311, and participates in the new internal circulation.

[0049] The lifting zone 310 and the partition 102 are connected by a water guide channel 315.

[0050] Water in the aquaculture pond 1 seeps through the sand layer 101 into the partition layer 102, and enters the lifting zone 310 through the water guide channel 315. Under the action of the lifting water pump 311 and the drip pipe 313, it participates in the internal circulation.

[0051] The automatic cleaning ecological aquaculture system also includes a protein ozone oxidation system 4, which is used to sterilize the raw water before it is put into the aquaculture pond 1 with ozone.

[0052] Using the protein ozone oxidation system 4 to treat raw water can effectively remove harmful substances such as ammonia nitrogen and nitrite, and kill viruses and bacteria in the water.

[0053] The protein ozone oxidation system 4 includes an ozone generator 401, a needle-blade variable frequency water pump 402, a venturi jet injector 403, and an ozone sterilization reaction cylinder 404. The outlet of the ozone generator 401 is connected to the side inlet of the venturi jet injector 403, the outlet of the needle-blade variable frequency water pump 402 is connected to the main inlet of the venturi jet injector 403, the outlet of the venturi jet injector 403 is connected to the inlet of the ozone sterilization reaction cylinder 404, and a dispersing baffle 405 connected to the inlet of the ozone sterilization reaction cylinder 404 and a backflow baffle 406 with inverted holes located above the dispersing baffle 405 are provided inside the ozone sterilization reaction cylinder 404. The outlet of the ozone sterilization reaction cylinder 404 is connected to the aquaculture pond 1. Generally, the ozone generator 401, the needle-blade variable frequency water pump 402, the venturi jet injector 403, and the ozone sterilization reaction cylinder 404 are all connected by pipes. The inlet and outlet of the ozone sterilization reaction cylinder 404 are both connected to pipes. The pipe connected to the inlet extends into the cylinder and rises to a certain height. A water-dispersing baffle 405 is installed at the end of this pipe, and a backflow baffle 406 is horizontally arranged inside the cylinder. The height of the outlet is lower than the height of the inlet (both outlets refer to the outlets on the bottom side of the cylinder). The ozone sterilization reactor 404 has two water inlets on its bottom side: one is a raw water inlet (raw water is pumped into the ozone sterilization reactor 404 by a regular water pump), and the other is an inlet connected to the outlet of the Venturi jet injector 403; it also has two water outlets: one is an outlet for supplying water to the aquaculture pond 1, and the other is an outlet connected to the inlet of the needle-type variable frequency water pump 402.

[0054] Ozone generator 401 produces ozone, and needle-blade variable frequency water pump 402 provides high-velocity raw water. Under the action of Venturi jet 403, ozone is drawn into the Venturi jet 403 by the high-velocity raw water and mixes thoroughly with the raw water (the mixed water is rich in microbubbles). Then it enters the ozone sterilization reaction chamber 404. After the mixed water enters the ozone sterilization reaction chamber 404, under the action of the dispersion baffle 405 and the backflow baffle 406 (which reduces the impact of the water flow and minimizes the turbulent flow in the ozone sterilization reaction chamber 404), there is not much collision between the bubbles, maintaining intact microbubbles. This avoids the problem of large bubbles forming due to collisions, because large bubbles will quickly escape to the surface, resulting in a shorter reaction adsorption time and thus affecting the effect. Ozone removes harmful substances such as ammonia nitrogen and nitrite from the raw water and kills viruses and bacteria. The remaining ozone overflows from the water and accumulates at the top of the ozone sterilization reactor 404; most of the mixed water (a mixture of raw water and ozone, containing only ozone bubbles) enters the aquaculture tank 1, and a small amount of mixed water enters the needle-blade variable frequency water pump 402. In the impeller chamber of the needle-blade water pump, the water-air mixture is broken up by the high-speed rotating needle impeller, which further reduces the size of the ozone bubbles. Then, the mixture passes through the Venturi tube (Venturi jet 403) and the pipeline and re-enters the ozone sterilization reactor 404.

[0055] The protein ozone oxidation system 4 also includes an ozone recovery pipe 407. The first end of the ozone recovery pipe 407 is connected to the top of the ozone sterilization reaction cylinder 404, and the second end of the ozone recovery pipe 407 is connected to the pipeline between the outlet of the ozone generator 401 and the side inlet of the Venturi jet injector 403. An ozone recovery check valve 408 is connected in series on the ozone recovery pipe 407. An ozone concentration detection device 409 is also provided on the top of the ozone sterilization reaction cylinder 404.

[0056] Unreacted ozone accumulates in the top space of the ozone sterilization reactor 404, and then re-enters the Venturi jet injector 403 through the ozone recovery pipe 407, where it mixes with the raw water again and enters the ozone sterilization reactor 404 to participate in the raw water treatment.

[0057] The operation process of the automatic cleaning ecological aquaculture system for the spotted snail in this embodiment is as follows: raw water treatment—aquaculture water circulation treatment—biological aquaculture care—automatic sand layer cleaning—tailwater treatment.

[0058] Raw water treatment: Raw water undergoes coarse filtration through a sand filter system, then enters a sterilizing lamp for sterilization, and finally enters a protein ozone oxidation tower (i.e., a protein ozone oxidation system) for further treatment.

[0059] Aquaculture water recycling treatment (i.e., internal circulation): includes physical filtration, sterilization, biological filtration and deaeration.

[0060] Biological aquaculture care: Introduce feed as the main food, and monitor water temperature and water exchange volume during the process.

[0061] Automatic sand cleaning (i.e., air-water mixed backwashing): Adjust the air pressure and water mixing ratio, and backwash once every three days to remove debris from the sand layer.

[0062] Wastewater treatment: After biological removal and degradation and ultraviolet photolysis treatment, the raw water is discharged only after ensuring that it meets the requirements for aquaculture water use.

[0063] The innovations of the automatic cleaning ecological aquaculture system for the spotted snail in this embodiment are mainly threefold.

[0064] Innovation Point 1

[0065] The entire aquaculture system has been effectively optimized and fine-tuned, with the sand-turning and cleaning process employing an innovative air-water mixed backwashing design. This design is specifically designed for the air-water mixed embedded cavity, directly installed in the partition at the bottom of the pool, effectively utilizing space and resulting in significant sand-turning efficiency. Through this innovative method, sediment and decaying matter in the sand layer can be effectively removed, reducing stress on snails, lowering the incidence of disease, and thus improving survival rates.

[0066] The design principle of this air-water mixed backwashing is to use a high-speed water flow to mix air and water with the pool water, generating a mixture of tiny, impact-driven bubbles that flush the sand layer above the bottom partition. Because these air-water mixtures contain bubbles with static charges on their surfaces, they attract organic matter from the sand layer and cause it to float on the surface. Due to their small size, the bubbles can penetrate deep into the sand layer, washing away decaying matter and food residue, thus keeping the sand layer clean and healthy.

[0067] Furthermore, this design helps improve water utilization. The presence of air bubbles in the air-water mixture increases the water's volume and fluidity, better promoting water circulation and renewal. Simultaneously, the presence of air bubbles also increases the oxygen content in the water, contributing to improved snail survival and growth rates.

[0068] This air-water mixed backwashing design has significant advantages in the sand-turning and cleaning process. It not only effectively removes deposited and decaying matter from the sand layer, but also improves water quality, increases dissolved oxygen levels, and enhances water utilization. By adopting this design, the habitat of the whelk can be better maintained, improving aquaculture efficiency and product quality.

[0069] Furthermore, this design can reduce stress on snails and lower the incidence of disease. Because the air-water mixed backwashing design avoids the interference and stimulation of traditional sand-turning methods, the snails do not feel stress or discomfort, thus reducing stress responses. At the same time, the cleanliness and health of the sand layer improves the snails' living environment, thereby reducing the risk of disease.

[0070] By adopting an air-water mixed backwashing design, sand turning and cleaning can be carried out more effectively, improving the efficiency and quality of the aquaculture system. At the same time, this method can also increase the survival rate of snails, bringing better economic benefits to farmers. As an innovative aquaculture technology, the air-water mixed backwashing design has brought new breakthroughs and development to the aquaculture of *Cyprinus edulis* (a type of whelk).

[0071] The air-water mixed backwashing system operates as follows: An air compressor fills the pressure tank with compressed air. The backwash water pump is activated, and water flows through the control valves (water flow control valve assembly, backwash water inlet valve) into the air cap (currently part of the nozzle) in the partition of the aquaculture tank. After 30 seconds of air cleaning, water and air are introduced, with the water pressure controlled at 2.0-4.0 kgf / cm². Simultaneously, the air inlet valve is opened, and the air volume is 48-60 m³ / cm². 3 / H is introduced into the mixing chamber at the bottom of the aquaculture pond, and sprayed out through the air cap to agitate the sand layer.

[0072] The necessity of backwashing sand layers: regular cleaning is mainly due to three reasons.

[0073] During aquaculture filtration, suspended solids in the water are adsorbed by the sand surface and accumulate in the sand layer. Over time, the aquaculture mesh gradually becomes clogged with debris, and the head loss from filtration increases. When a certain limit is reached, the filter media (i.e., the sand layer) needs to be cleaned to reduce the amount of residue on the bottom mesh and increase the water flow rate. This helps maintain smooth water flow and filtration efficiency.

[0074] During aquaculture, snails hide in the sand and engage in biological activities and excretion within the sand layer. These activities lead to the accumulation of excrement in the sand, and the proliferation of anaerobic and fermentative bacteria, resulting in oxygen deficiency and elevated levels of harmful substances such as ammonia and nitrogen. These harmful substances directly affect the normal growth of snails and may even cause poisoning. Therefore, regular backwashing of the sand layer helps remove these harmful substances and maintain its cleanliness and health.

[0075] Regular backwashing of the sand layer can maintain its permeability, which helps promote oxygen circulation in the water and increase dissolved oxygen levels. This helps maintain a favorable growth environment for aquatic organisms, improving aquaculture efficiency and product quality.

[0076] In conclusion, regular backwashing of the sand layer is crucial for maintaining the aquaculture environment of the African whelk. Timely removal of pollutants and harmful substances from the sand layer ensures stable and healthy water quality, providing favorable growth conditions for the whelk.

[0077] Innovation Point Two

[0078] The entire pond is designed with a 5-degree incline and is equipped with an independent filtration system (internal circulation filtration system). This design effectively reduces water changes, lowers energy consumption in aquaculture, and also reduces the risk of viral infection.

[0079] This sloping design allows the water to flow naturally along the incline, reducing the need for manual water pumping and changes. This not only lowers labor costs for fish farmers but also reduces the risk of introducing new pollutants and viruses during water changes. Because less frequent water changes are required, energy consumption during the aquaculture process is also reduced, further decreasing operating costs.

[0080] An independent filtration system ensures effective filtration and purification of the pool water, maintaining good water quality. The filtration system removes impurities and harmful substances from the water, improving water transparency and dissolved oxygen levels, providing a healthy living environment for the whelks. At the same time, the filtration system also helps maintain the ecological balance of the aquatic body, reducing the risk of diseases and infections caused by water quality problems.

[0081] In summary, the combination of this inclined design (a 5-degree inclination within the pond allows water to flow naturally to the lower filter compartments and enter the filtration system, where it is then pumped out and continuously circulated) and an independent filtration system makes the entire aquaculture pond more efficient, environmentally friendly, and healthier. By reducing water changes and energy consumption, farmers can save on operating costs and improve aquaculture efficiency. Simultaneously, this design also helps reduce the risk of viral infection, increasing the survival rate of the whelks.

[0082] Innovation Point 3

[0083] The raw water is treated using a protein ozone oxidation system. This system uses a variable frequency needle-blade pump to mix ozone with the raw water, breaking it into tiny bubbles. These bubbles are then further mixed using a Venturi tube (Venturi jet injector) to produce micro-nano bubbles. This innovative design ensures sufficient contact between the ozone and the water flow, maximizing the oxidizing effect of the ozone. These micro-nano bubbles are then introduced into a specially designed reaction chamber for a thorough chemical reaction.

[0084] To ensure complete ozone reaction, any unreacted ozone gas is reintroduced into the water pump through a one-way vent valve and a guide pipe. This ensures that the ozone and water are thoroughly mixed again and further oxidized and degassed. This design ensures that the ozone is completely consumed and prevents it from remaining in the water, thus avoiding stress or poisoning of snails caused by ozone excess.

[0085] To monitor ozone concentration in water, the system is also equipped with an ozone content detector and an ORP detector. The detector can monitor the residual ozone concentration in water by detecting the ORP value (oxidation-reduction potential).

[0086] The micro-nano ozone bubbles in the protein ozone oxidation system possess superior oxidizing power, directly reacting with harmful substances in water to oxidize and decompose them. This highly efficient oxidation effectively removes harmful substances such as ammonia nitrogen and nitrite from water, while also killing viruses and bacteria. In summary, the protein ozone oxidation system is a highly efficient and safe raw water treatment system. It effectively removes harmful substances from raw water while also killing pathogens and viruses. Precise control of ozone concentration in the water through ozone recovery channels avoids unnecessary stress or harm to farmed organisms, thus ensuring the healthy growth and development of the whelk and guaranteeing the economic benefits of aquaculture.

[0087] As can be seen from the table below (energy consumption comparison chart), the automatic cleaning ecological aquaculture system of this embodiment can significantly reduce energy consumption and operating costs.

[0088]

[0089] The growth data of the control group and the experimental group of *Bellamya spp.* are compared in the table below:

[0090] Final weight and final shell height average value Standard deviation Final body weight (g) of the control group 8.475 0.2074 Final body weight (g) of the experimental group 10.895 0.2837 Control group final shell height (mm) 34.8 1.473 Height of the last shell in the test group (mm) 40.2 1.609

[0091] The experimental group had a significantly higher body weight and a significantly higher end shell height compared to the control group.

[0092] The comparison of water quality indicators between the control group and the experimental group of *Bambusa spp.* is shown in the table below:

[0093] Vibrio and ammonia nitrogen content average value Standard deviation Vibrio content in the control group (cfu / ml) <![CDATA[2.4x10 5 ]]> <![CDATA[1.7x10 5 ]]> Vibrio content in the experimental group (cfu / ml) <![CDATA[3.6x10 3 ]]> <![CDATA[8.6x10 2 ]]> Ammonia nitrogen content (mg / L) in the control group 3.00 0.2 Ammonia nitrogen content in the experimental group (mg / L) 1.68 0.2168

[0094] The Vibrio content in the experimental group was significantly lower than that in the control group, and the ammonia nitrogen content was also significantly lower.

[0095] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. An automatic cleaning ecological breeding system of Haminoea japonica, comprising a breeding tank, a partition layer is arranged at the bottom of the breeding tank, characterized in that, The dynamic cleaning ecological breeding system further comprises a gas-water mixed backwashing device, the gas-water mixed backwashing device comprises a gas source assembly for providing compressed gas, a backwashing water source assembly for providing backwashing water, and a backwashing pipe uniformly laid in the partition layer, the gas outlet pipe of the gas source assembly and the water outlet pipe of the backwashing water source assembly are connected in parallel and then connected in series with the backwashing pipe, and a plurality of nozzles for spraying mixed water and gas are arranged on the backwashing pipe. A gas flow control valve group is connected in series on the gas outlet pipe of the gas source assembly, an air inlet one-way valve is connected in series at the rear end of the gas flow control valve group, a water flow control valve group is connected in series on the water outlet pipe of the backwashing water source assembly, a backwashing water inlet valve is connected in series at the rear end of the water flow control valve group, the rear end of the air inlet one-way valve is connected with the rear end of the backwashing water inlet valve, and the rear end of the air inlet one-way valve and the rear end of the backwashing water inlet valve are connected in series with the backwashing pipe. The breeding pool is arranged in an inclined manner, and an inner circulation filtering system is arranged at a lower end of the breeding pool, and the inner circulation filtering system is used for physically filtering, sterilizing and degassing water in the breeding pool and then feeding the water into the breeding pool again. The inner circulation filtering system comprises a physical filtering area, a sterilization area, a biochemical culture filtering area and a degassing area through which water flows in sequence, each area adopts a water inlet from top and water outlet from bottom mode, and a communication channel is arranged between adjacent areas, the communication channel connects the water outlet of the previous area and the water inlet of the subsequent area, the height of the water inlet of the subsequent area is higher than the height of the water outlet of the previous area, and the height of the water inlet of the subsequent area is lower than the height of the water inlet of the previous area. The inner circulation filtering system further comprises a lifting area connected with the water outlet of the degassing area, a lifting water pump is arranged in the lifting area, the water outlet of the lifting water pump is connected with the water inlet of a vertical lifting pipe, the water outlet of the lifting pipe is connected with the water inlet of a drip pipe arranged horizontally above the breeding pool, and a plurality of uniformly distributed water dripping nozzles are arranged on the lower side of the drip pipe.

2. The automatic cleaning ecological breeding system of haminoeae hamabrunnea according to claim 1, characterized in that, The gas source assembly comprises a compressor and a pressure stabilizing tank, the gas outlet of the compressor is connected with the gas inlet of the pressure stabilizing tank, and the gas outlet of the pressure stabilizing tank is connected with the front end of the gas flow control valve group; the backwashing water source assembly comprises a backwashing variable frequency water pump, and the water outlet of the backwashing variable frequency water pump is connected with the front end of the water flow control valve group.

3. The automatic cleaning ecological breeding system of haminoeae aphrodite according to claim 1, characterized in that, The lifting area and the partition layer are connected through a water guide channel.

4. The automatic cleaning ecological breeding system of haminoeae hamabrunnea according to claim 1, characterized in that, The automatic cleaning ecological breeding system further comprises a protein ozone oxidation system, and the protein ozone oxidation system is used for ozone sterilization of raw water before being fed into the breeding pool.

5. The automatic cleaning ecological breeding system of haminoeae aphrodite according to claim 4, characterized in that, The protein ozone oxidation system comprises an ozone generator, a needle-leaf type variable frequency water pump, a Venturi jet device and an ozone sterilization reaction cylinder, the gas outlet of the ozone generator is connected with the side inlet of the Venturi jet device, the water outlet of the needle-leaf type variable frequency water pump is connected with the main inlet of the Venturi jet device, the outlet of the Venturi jet device is connected with the water inlet of the ozone sterilization reaction cylinder, a dispersion water baffle connected with the water inlet of the ozone sterilization reaction cylinder and a reverse flow baffle arranged above the dispersion water baffle are arranged in the ozone sterilization reaction cylinder, and the water outlet of the ozone sterilization reaction cylinder is connected with the breeding pool.

6. The automatic cleaning ecological breeding system of haminoeae hamabrunna according to claim 5, characterized in that, The protein ozone oxidation system further comprises an ozone recovery pipe, a first end of the ozone recovery pipe being communicated with a top of the ozone sterilization reaction cylinder, a second end of the ozone recovery pipe being communicated with a pipe between a gas outlet of the ozone generator and a side inlet of the Venturi jet, and an ozone recovery one-way valve being connected in series on the ozone recovery pipe.

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