Water quality optimizing and feeding all-in-one machine for aquaculture

Abstract

The invention relates to the technical field of water purification, in particular to a water quality optimizing and feeding all-in-one machine in aquaculture, which comprises a machine platform and a phycomycete fixing cabin, the phycomycete fixing cabin is arranged below the machine platform, the phycomycete fixing cabin is of a structure with the upper part and the lower part being round, and a lower end fixing disc is fixed at the lower end of the phycomycete fixing cabin; the interior of the phycomycete fixing cabin is provided with cable-stayed fibers, and phycomycete fixing ball filler is strung on the fibers. According to the invention, gas-water two-phase flows with different flows and dissolved oxygen concentrations are generated through the Venturi aeration device, dissolved oxygen is supplied to the phycomycete fixing cabin, pollutants in water are removed by using the phycomycete fixing cabin, oxygen is continuously filled into an anoxic zone in the water, an aged biological membrane in the phycomycete fixing cabin is flushed, and meanwhile, food is periodically fed into the water. Automatic control equipment of a machine platform sails in water, the operation working conditions of a Venturi aeration device and a feeding system are optimized, water quality purification and bait feeding are synchronously and accurately carried out, and the yield of aquatic products is increased.

Description

Technical Field

[0001] The invention relates to the technical field of water purification, and in particular to an integrated feeding machine for optimizing water quality in aquaculture. Background Art

[0002] Oxygen is a necessary condition for the survival of most biological communities in the aquaculture pond ecosystem. If the oxygen supply is insufficient, it will be difficult for aquaculture organisms, zooplankton, and phytoplankton to breathe. The electrochemical reaction of more anaerobic microorganisms to decompose organic matter will produce harmful substances, which will have adverse or even fatal effects. China's aquaculture is gradually developing towards high-density, high-yield intensive and factory-based development. Dissolved oxygen is one of the important factors affecting aquaculture production.

[0003] According to the data from the "2023 Ecological Environment Quality Bulletin", the indicators that affect the quality of my country's fishery water environment are mainly nitrogen and phosphorus, and the existing aquaculture industry mostly uses only a single aeration method to manage ponds and lakes, which makes it difficult to remove nitrogen and phosphorus indicators. A Chinese patent with publication number CN115843737A discloses a semi-suspended automatic walking pond purification and oxygenation device, which uses an oxygenation head extended into the water body for oxygenation. However, the above-mentioned pond purification and oxygenation device has a low oxygenation efficiency, and the oxygenation head is easily blocked, and it is impossible to effectively remove nitrogen and phosphorus in the water body.

[0004] At the same time, the method of purifying water using biofilms based on non-algae microorganisms is difficult to apply to mobile water treatment equipment due to the need for oxygenation and the large volume of backwash components.

[0005] At the same time, aquaculture, especially fish aquaculture, often uses high-density farming to ensure efficiency, that is, putting as many fry as possible in a unit area. Due to the high density of fry and the nature of fish to compete for food, if they are fed at one point during feeding, the fry will gather together, which is easy to cause hypoxia, and excessive feeding will not only increase feed costs, but also lead to an increase in water nutrient levels, especially high levels of total nitrogen, turbidity and other indicators in the water, which will seriously reduce aquatic production. Therefore, scientific feeding is the key to mastering the scientific nature of aquaculture, and it is also an important factor in further improving the economic benefits of farmers.

[0006] A Chinese patent with publication number CN221044045U discloses a feeding device for aquaculture, which includes a conveying fan, a venturi tube, a feed barrel, and a disperser. The disperser is a centrifuge, and the centrifuge is used to disperse and spray the feed conveyed by the venturi tube into the fish pond.

[0007] However, the above-mentioned feeding device for aquaculture still needs to be fixed on the shore. When applied to a large area of ​​fish ponds, multiple feeding devices need to be built, which increases the cost of feeding. In addition, the venturi tube, conveying fan and other equipment of the above-mentioned device need to be placed in the air. If the above-mentioned feeding device is placed on a mobile platform, it will greatly occupy the volume of the mobile platform and reduce the amount of feed carried.

[0008] In view of this, in order to solve the pain points of single means of optimizing fish pond water quality, low feeding efficiency, and small amount of feed carried, the present invention proposes an integrated feeding machine for optimizing water quality in aquaculture. Summary of the invention

[0009] In order to solve the above problems, the present invention provides an all-in-one feeding machine for optimizing water quality in aquaculture.

[0010] The present invention adopts the following technical scheme, a water quality optimization feeding integrated machine in aquaculture, comprising:

[0011] Machine platform;

[0012] The algae-bacteria fixed cabin is arranged below the machine platform. The algae-bacteria fixed cabin is an upper and lower circular structure. A lower fixed plate is fixed at the lower end of the algae-bacteria fixed cabin. There are oblique-pull fiber filaments inside the algae-bacteria fixed cabin. The algae-bacteria fixed ball filler is strung on the fiber filament. The algae-bacteria fixed ball filler is inoculated with an algae-bacteria mixture to form an algae-bacteria mixed biofilm, which has the ability to purify water quality;

[0013] The Venturi aeration device is installed below the algae-bacteria fixed cabin to automatically inhale air and form a violent gas-liquid two-phase flow, generate micro-nano bubbles, and efficiently oxygenate the water and oxidize pollutants. It can also automatically inhale feed liquid and evenly put the feed into the water.

[0014] A propeller, wherein a plurality of propellers are provided, and the plurality of propellers are fixed on the machine platform through a steel frame, and are used to control the movement of the water quality optimizing feeding machine.

[0015] As a further description of the above technical solution: a water quality probe is installed on the outer wall of the venturi tube and is connected to the control computer via a signal line.

[0016] As a further description of the above technical solution: the Venturi aeration device is composed of an inverted Venturi aeration pipe and a water pump. The Venturi aeration pipe is structured from top to bottom as a diffusion section, a throat, a contraction section and an inlet section. The inlet section is connected to the water pump. When the water pump is working, water is pumped into the Venturi aeration pipe from bottom to top. There is an opening at the connection between the throat and the contraction section of the Venturi aeration pipe, and the position of the opening is connected to an air pipe and a feed pipe.

[0017] As a further description of the above technical solution: the air pipe is an L-shaped pipe, the horizontal end of which is connected to the Venturi aeration pipe, and the top end of the vertical section thereof passes through the lower fixed plate and the machine platform and extends to the outside.

[0018] As a further description of the above technical solution: a control computer is arranged on the machine platform, a battery is also arranged on the machine platform, and a feed bin is arranged on the platform.

[0019] As a further description of the above technical solution: the feed pipe is an L-shaped pipe, the horizontal end of which is connected to the Venturi aeration pipe, the output end of the feed pipe passes through the lower fixed plate and is connected to the machine platform and the feed bin, and a valve is provided at the connection between the feed pipe and the feed bin.

[0020] As a further description of the above technical solution: the algae and bacteria fixing cabin is provided with an outer mesh cover and an inner mesh cover.

[0021] As a further description of the above technical solution: there is an opening in the center of the lower fixed plate, and a filter screen is installed at the opening to prevent feed from entering the algae and bacteria fixing chamber while further cutting larger bubbles to increase the specific surface area of ​​the bubbles and increase the oxygenation capacity.

[0022] A method for automatically adjusting the amount of feed thrown is implemented based on the water quality optimization feeding integrated machine in aquaculture, and the method comprises the following steps:

[0023] a) After the boat is put into the water, the control computer first controls the boat to sail in the water, collects data through the water quality probe, draws a dissolved oxygen-nutrient-fish distribution map through the analysis of water quality indicators, and starts the water pump by the control computer to start aeration and feeding.

[0024] b) During the feeding process, the water quality probe will continuously monitor the water quality status and transmit the data to the control computer.

[0025] c) If the dissolved oxygen in a certain water area decreases and the nutrient index increases, it means that fish are gathering in the water area and the feed amount is higher than the amount of food eaten by the fish. At this time, the control computer will mark the current location information and close the feed bin valve, and control the hull to move to a water area with normal dissolved oxygen levels to feed, so as to attract fish to gather at the best growth point at all times.

[0026] d) After feeding, the control computer will control the hull to return to the waters with lower dissolved oxygen levels, oxygenate the water through the Venturi aeration system and the algae fixation chamber, and adsorb and degrade excess feed and other pollutants to reduce the nutrient level of the water.

[0027] Beneficial effects:

[0028] The invention provides an integrated feeding machine for optimizing water quality in aquaculture, which has a simple structure, convenient operation, low energy consumption and is more flexible. When the device is in use, it can realize free movement in the water by controlling the output power of different propellers by controlling a computer, and continuously injects air into the anoxic section in the water through a Venturi aeration device when the device moves in the water to increase the oxygen content in the water; by utilizing the co-metabolism mechanism of algae and microorganisms attached and grown in the algae-bacteria fixed cabin, pollutants in the water can be removed more efficiently, and the content of organic matter and total nitrogen and total phosphorus in the water can be reduced; at the same time, the oxygen produced by the photosynthesis of the algae can supply the growth of microorganisms The Venturi aeration device can reduce the energy consumption of the aeration device and purify the water quality in a green and low-carbon way. By changing the power of the Venturi aeration device, gas-liquid two-phase flow with different flow rates is generated, and the aged algae biofilm in the algae-bacteria fixed tank is flushed at regular intervals to maintain the activity of the algae biofilm. The negative pressure generated by the Venturi tube can also be used to feed the water periodically during movement, thereby avoiding the phenomenon of fish gathering due to feeding in a specific area. The water quality is monitored and controlled by the water quality probe, and the calculation and manipulation of the computer can reduce the waste of feed caused by excessive feeding, thereby greatly improving the feeding effect and efficiency and increasing the breeding density. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0030] Figure 1 A schematic diagram of the structure of a water quality optimization and feeding integrated machine for aquaculture provided by an embodiment of the present invention;

[0031] Figure 2 A schematic diagram of the structure of a machine platform provided by an embodiment of the present invention;

[0032] Figure 3 A schematic diagram of the structure of an algae-bacteria fixing cabin provided in an embodiment of the present invention;

[0033] Figure 4 A schematic structural diagram of a Venturi aeration device provided in an embodiment of the present invention.

[0034] In the figure: 1. Machine platform; 2. Algae and bacteria fixed cabin; 3. Venturi aeration device; 4. Control computer; 5. Battery; 6. Feed bin; 7. Valve; 8. Propeller; 9. Outer mesh cover; 10. Inner mesh cover; 11. Lower end fixed plate; 12. Filter net; 13. Fiber filament; 14. Algae and bacteria fixed ball filler; 15. Venturi aeration pipe; 16. Air pipe; 17. Feed pipe; 18. Water pump; 19. Water quality probe. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below with reference to specific diagrams. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0036] Example 1

[0037] See also Figure 1-Figure 4 The embodiment of the present invention provides a technical solution: a water quality optimization feeding integrated machine in aquaculture, comprising

[0038] Machine platform 1:

[0039] The algae-bacteria fixed cabin 2 is used to purify water pollutants such as nitrogen and phosphorus by using the algae and fungi therein. It is arranged below the machine platform 1. The algae-bacteria fixed cabin 2 is an upper lower circular structure. A lower end fixing plate 11 is fixed at the lower end of the algae-bacteria fixed cabin 2. There are oblique-pull fiber filaments 13 inside the algae-bacteria fixed cabin 2. The use of oblique-pull can increase the time and light intensity of the algae on it being exposed to sunlight. Algae-bacteria fixed ball fillers 14 are strung on the fiber filaments 13. The algae-bacteria fixed ball fillers 14 are inoculated with an algae-bacteria mixture to form an algae-bacteria mixed biofilm with water purification ability; one end of the fiber filament 13 is connected to the machine platform 1, and the other end of the fiber filament 13 is connected to the lower end fixing plate 11, on which algae-bacteria fixed ball fillers 14 are strung, and the fillers are used to fix the algae-bacteria mixture;

[0040] The Venturi aeration device 3 is arranged below the algae-bacteria fixing chamber 2 and is used to generate a gas-liquid two-phase flow and uniformly put the feed into the water;

[0041] The propeller 8 is provided in plurality, and the plurality of propellers 8 are fixed on the machine platform 1 through a steel frame, and are used to control the movement of the water quality optimizing feeding machine.

[0042] It should be noted that the propellers 8 are connected to the control computer 4, and the direction and speed of travel are controlled by the output power difference of multiple propellers 8.

[0043] The venturi aeration device 3 is composed of an inverted venturi aeration pipe 15 and a water pump 18. The venturi aeration pipe 15 is structured from top to bottom as a diffusion section, a throat, a contraction section and an inlet section. The inlet section is connected to the water pump 18. When the water pump 18 is working, water is pumped into the venturi aeration pipe 15 from bottom to top. There is an opening at the connection between the throat and the contraction section of the venturi aeration pipe 15, and the position of the opening is connected with an air pipe 16 and a feed pipe 17.

[0044] The air pipe 16 is an L-shaped pipe, the horizontal end of which is connected to the Venturi aeration pipe 15, and the top end of the vertical section of which penetrates the lower end fixing plate 11 and the machine platform 1 and extends to the outside.

[0045] A control computer 4 is arranged on the machine platform 1 , a battery 5 is also arranged on the machine platform 1 , and a feed bin 6 is arranged on the platform.

[0046] The feed pipe 17 is an L-shaped pipe, and its horizontal end is connected to the Venturi aeration pipe 15. The output end of the feed pipe 17 passes through the lower fixed plate 11 and is connected to the machine platform 1 and the feed bin 6. A valve 7 is provided at the connection between the feed pipe 17 and the feed bin 6. Its function is to use the negative pressure generated by the Venturi pipe to transport the feed to the Venturi aeration pipe 15 to mix with the water.

[0047] It should be noted that the top port of the feed bin 6 is provided with a top cover.

[0048] The algae and bacteria fixing cabin 2 is provided with an outer mesh cover 9 and an inner mesh cover 10 .

[0049] There is an opening in the center of the lower fixed disk 11, and a filter screen 12 is installed at the opening to prevent feed from entering the algae and bacteria fixing chamber 2 while further cutting larger bubbles to increase the specific surface area of ​​the bubbles and increase the oxygenation capacity.

[0050] The control computer 4 of the water quality optimization feeding machine in aquaculture is powered by a battery 5, and the feed density and position can be adjusted by controlling the feed bin valve 7. The machine running direction and speed can be adjusted by controlling the output power of multiple propellers 8 respectively, and go to the designated feeding area or the water area where the water quality needs to be purified. The water flow speed in the venturi aeration pipe 15 can be adjusted by controlling the operating power of the water pump 18, and the intensity of the negative pressure generated can be changed to obtain different ratios of air, feed and water in the three-phase flow at the aeration outlet, and different three-phase flow velocities can be obtained, so as to adjust the aeration efficiency, algae film coverage rate, and feed feeding density.

[0051] When the feeding device for aquaculture using the water quality optimization feeding machine is working, ensure that the valve 7 between the feed bin 6 and the feed pipe 17 is in a closed state; after the valve 7 is closed, open the top cover of the feed bin 6, add the feed into the feed bin 6, and after the feed is added, use the control computer 4 to start the propeller 8 and the water pump 18 respectively; after starting, use the control computer 4 to open the valve 7 between the feed bin 6 and the feed pipe 17, so that the feed in the feed bin 6 moves into the feed pipe 17 under the action of its own gravity and the negative pressure of the venturi aeration pipe 15. After the feed enters the feed pipe 17, it passes through the throat and diffusion section of the venturi aeration pipe 15 in sequence under the action of the negative pressure generated by the water flow and is fully mixed with the water flow before entering the water body; the control computer 4 can adjust the feed feeding density by changing the opening and closing degree of the valve 7.

[0052] After feeding is completed, the valve 7 between the feed bin 6 and the feed pipe 17 is closed to stop the feed in the feed bin 6 from entering the feed pipe 17. If aeration is not required after feeding, the valve 7 between the feed bin 6 and the feed pipe 17 should be closed for a period of time before the water pump 18 is turned off to prevent the feed from being deposited in the feed pipe 17.

[0053] When the aquaculture water quality optimization and feeding integrated machine is applied to the water quality purification work of aquaculture, the battery 5 supplies power to the water pump 18, and the control computer 4 controls the water pump 18 to start working. The water pump 18 pumps the oxygen-deficient water in the middle of the pond from bottom to top to the inlet section of the venturi aeration pipe 15. When the water flows through the contraction section and throat of the venturi aeration pipe 15, negative pressure is generated to suck air into the throat of the venturi aeration pipe 15 through the air pipe 16, and fully mix with the water. At the same time, the water flow is used to cut large bubbles into small bubbles, thereby increasing the specific surface area of ​​the bubbles and increasing the aeration effect; and the water flowing out of the diffusion section of the venturi aeration pipe 15 passes through the water body vortex generated by the water pump 18 sucking water, and flows to the water pump 18 again, and is pumped into the inlet section of the venturi aeration pipe 15 by the water pump 18, and is aerated again, and the cycle continues. At the same time, the operating power of the water pump 18 is reduced or increased according to the water quality conditions of different water areas, so as to adjust the negative pressure generated by adjusting the water flow velocity in the Venturi aeration pipe 15, thereby changing the air intake effect, thereby achieving energy saving and intelligent aeration control effect.

[0054] When the water quality optimization and feeding integrated machine in aquaculture is applied to the water quality purification work of aquaculture, a smaller output flow rate of the venturi aeration tube 15 should be set first, so that the algae-bacteria mixture fixed on the algae-bacteria fixed ball filler 14 in the algae-bacteria fixed cabin 2 forms a biofilm, so as to achieve the best water quality optimization effect. After the biofilm is formed, the control computer 4 will freely adjust the aeration rate according to the regional water quality. When the biofilm ages, the control computer 4 will automatically increase the output power of the water pump 18 and increase the outflow flow rate of the venturi aeration tube 15. After the feed is intercepted by the filter 12, the gas-liquid two-phase flow flows into the algae-bacteria fixed cabin 2, and the biofilm attached to the algae-bacteria fixed ball filler 14 is flushed. The aged biofilm is peeled off and separated from the algae-bacteria fixed cabin 2 through the outer net cover 9 to become fish food. After that, the control computer 4 will automatically reduce the output power of the water pump 18 and reduce the outflow rate of the venturi aeration pipe 15, so that the algae-bacteria mixture fixed on the algae-bacteria fixed ball filler 14 in the algae-bacteria fixed chamber 2 forms a biofilm, so as to achieve the best water quality optimization effect again. After the biofilm is formed, the control computer 4 will freely adjust the aeration rate according to the regional water quality.

[0055] Example 2

[0056] See also Figure 1-Figure 4 , a method for using a water quality optimization feeding integrated machine in aquaculture, comprising:

[0057] When the water quality optimization feeding machine is first put into the pond, it is left in a still water area for 5-7 days to allow algae and bacteria to form biofilms on the algae and bacteria fixed ball filler 14, so that the algae and bacteria mixture can achieve the maximum effect of denitrification and phosphorus removal in the water body.

[0058] According to the water quality of the fish pond, the control computer 4 can be set to issue a command to increase the output power of the water pump 18 after a certain number of days (the specific period depends on the water quality of the fish pond) after the biofilm is formed, increase the intensity of the water flow out of the Venturi aeration pipe, and backwash the biofilm. After the backwash is completed, the water pump output power 18 is lowered again to allow the biofilm to form.

[0059] Example 3

[0060] The embodiment of the present invention provides a technical solution: a method for automatically adjusting the amount of feed thrown, which is based on a water quality optimization feeding integrated machine in aquaculture, and the method includes the following steps:

[0061] After the boat is put into the water, the control computer 4 controls the boat to sail in the water, collects data through the water quality probe 19, draws a dissolved oxygen-nutrient salt-fish distribution map through the analysis of water quality indicators, and starts the water pump 18 by the control computer 4 to start aeration and oxygenation and feed feeding.

[0062] b During the feeding process, the water quality probe 19 will continuously monitor the water quality status of the water body and transmit the data to the control computer 4.

[0063] c If the dissolved oxygen in a certain water area decreases and the nutrient index increases, it means that fish are gathering in the water area and the feed amount is higher than the amount of food eaten by the fish. At this time, the control computer 4 will mark the current position information and close the feed bin valve 7, and control the hull to move to a water area with a normal dissolved oxygen level to feed, so as to attract fish to gather at the best growth point at all times.

[0064] d After the feeding is completed, the control computer 4 will control the hull to return to the waters with lower dissolved oxygen levels, oxygenate the water through the Venturi aeration system and the algae fixation chamber, and adsorb and degrade excess feed and other pollutants to reduce the nutrient level of the water.

[0065] The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and the description in the specification are only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A water quality optimization feeding integrated machine in aquaculture, characterized in that: include: Machine platform (1); The algae-bacteria fixed cabin (2) is arranged below the machine platform (1), the algae-bacteria fixed cabin (2) is an upper lower circular structure, a lower end fixing plate (11) is fixed at the lower end of the algae-bacteria fixed cabin (2), an oblique-pull fiber filament (13) is arranged inside the algae-bacteria fixed cabin (2), an algae-bacteria fixed ball filler (14) is strung on the fiber filament (13), and an algae-bacteria fixed ball filler (14) is inoculated with an algae-bacteria mixture, so that an algae-bacteria mixed biofilm is formed, which has the ability to purify water quality; A venturi aeration device (3) is arranged below the algae-bacteria fixed cabin (2) and is used to generate a gas-liquid two-phase flow while evenly feeding the feed into the water, thereby achieving water purification and feeding simultaneously; A propeller (8), wherein a plurality of propellers (8) are provided, and the plurality of propellers (8) are fixed on the machine platform (1) via a steel frame, and are used to control the movement of the water quality optimization feeding machine.

2. The integrated feeding machine for optimizing water quality in aquaculture according to claim 1, characterized in that: The Venturi aeration device (3) is composed of an inverted Venturi aeration pipe (15) and a water pump (18). The Venturi aeration pipe (15) is structured from top to bottom as a diffusion section, a throat, a contraction section and an inlet section. The inlet section is connected to the water pump (18). When the water pump (18) is in operation, water flow is pumped into the Venturi aeration pipe (15) from bottom to top. An opening is provided at the connection between the throat and the contraction section of the Venturi aeration pipe (15). The position of the opening is conductively connected to an air pipe (16) and a feed pipe (17).

3. The integrated feeding machine for optimizing water quality in aquaculture according to claim 2, characterized in that: The air pipe (16) is an L-shaped pipe, the horizontal end of which is connected to the Venturi aeration pipe (15), and the top end of the vertical section of which penetrates the lower end fixing plate (11) and the machine platform (1) and extends to the outside.

4. The integrated feeding machine for optimizing water quality in aquaculture according to claim 3, characterized in that: The machine platform (1) is provided with a control computer (4), the machine platform (1) is also provided with a storage battery (5), and the platform is provided with a feed bin (6).

5. The integrated feeding machine for optimizing water quality in aquaculture according to claim 4, characterized in that: The control computer (4) is connected to the valve (7), the propeller (8), the water pump (18), and the water quality probe (19) through an electric control system.

6. The integrated feeding machine for optimizing water quality in aquaculture according to claim 5, characterized in that: The feed pipe (17) is an L-shaped pipe, the horizontal end of which is connected to the Venturi aeration pipe (15). The output end of the feed pipe (17) passes through the lower fixed plate (11) and is connected to the machine platform (1) and the feed bin (6). A valve (7) is provided at the connection between the feed pipe (17) and the feed bin (6).

7. The integrated feeding machine for optimizing water quality in aquaculture according to claim 6, characterized in that: The algae and fungus fixing cabin (2) is provided with an outer mesh cover (9) and an inner mesh cover (10).

8. The integrated feeding machine for optimizing water quality in aquaculture according to claim 6, characterized in that: The lower fixed disk (11) has an opening in the center, and a filter screen (12) is installed at the opening to prevent feed from entering the algae and fungus fixed chamber (2) and further cut larger bubbles to increase the specific surface area of ​​the bubbles and increase the oxygenation capacity.

9. A method for automatically adjusting the amount of feed thrown, based on the water quality optimization feeding integrated machine in aquaculture as described in claims 5-8, characterized in that: The method comprises the following steps: a) After the boat is put into the water, the control computer (4) first controls the boat to sail in the water, collects data through the water quality probe (19), draws a dissolved oxygen-nutrient salt-fish distribution map through analysis of water quality indicators, and starts the water pump (18) by the control computer (4) to start aeration and oxygenation and feed feeding. b) During the feeding process, the water quality probe (19) will continuously monitor the water quality status of the water body and transmit the data to the control computer (4). c) If the dissolved oxygen in a certain water area decreases and the nutrient index increases, it means that fish are gathering in the water area and the feed amount is higher than the amount of food consumed by the fish. At this time, the control computer (4) will mark the current position information and close the feed bin valve (7), and control the hull to move to a water area with a normal dissolved oxygen level to feed, so as to attract fish to gather at the best growth point at all times. d) After the feeding is completed, the control computer (4) will control the hull to return to the waters with lower dissolved oxygen levels, oxygenate the water through the Venturi aeration system and the algae fixation chamber, and adsorb and degrade excess feed and other pollutants to reduce the nutrient level of the water.

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