Light and temperature control circulating water parent fish rearing system

Abstract

A light and temperature control circulating water parent fish rearing system comprises a parent fish rearing module and a water treatment module, and the parent fish rearing module is composed of a darkroom and rearing units used for rearing parent fish. The water treatment module is composed of a filter unit used for removing solid impurities and regulating and controlling water temperature, a biochemical treatment unit used for carbon and nitrogen removal, a disinfection unit used for sterilization and disinfection and trace oxygenation, and an oxygen injection unit used for efficient oxygenation. The units are mutually connected through pipelines, the structure is simple, and assembling is easy; the whole parent fish rearing system is totally closed and self-circulated, rearing water is filtered, decarburized, denitrified, killed and oxygenated, key indexes such as illumination, water temperature, dissolved oxygen and flow velocity can be accurately regulated and controlled, the method is suitable for rearing parent fishes of various fishes, and more than 90% of water resources can be saved compared with a traditional parent fish rearing mode; in the parent fish rearing system, only water in front of the biochemical treatment unit needs to be conveyed to the position above the trickling filter bed through the circulating pump, circulating water is conveyed at other positions through gravitational potential energy, and the advantages of being environmentally friendly and saving energy are achieved.

Description

Technical Field

[0001] This invention relates to the field of aquaculture technology, and in particular to a light- and temperature-controlled circulating aquatic broodstock breeding system. Background Technology

[0002] Broodstock refers to sexually mature fish suitable for artificial breeding. Only good broodstock can produce high-quality fry, making broodstock rearing crucial. The environment is a key factor influencing broodstock rearing. During the breeding season, the broodstock's sensory organs transmit stimuli from the external environment (such as temperature and light) to the brain, causing the brain (mainly the hypothalamus) to secrete gonadotropin-releasing hormone (GnRH). This stimulates the pituitary gland to secrete gonadotropins, which in turn act on the gonads, prompting them to secrete sex steroid hormones to promote gonadal maturation and the release of sperm and eggs. Therefore, during the broodstock rearing stage, it is essential to control environmental factors such as light, water temperature, and water quality to lay a solid foundation for subsequent artificial breeding. Furthermore, most fish require intensive nutrition during the broodstock rearing stage, resulting in a large amount of uneaten feed and feces, placing higher demands on water quality management. In summary, a green, environmentally friendly, efficient, and controllable recirculating aquaculture system for broodstock rearing provides a new solution for broodstock rearing. Currently, most recirculating aquaculture systems for breeding broodstock are designed for specific species in dedicated ponds, resulting in low flexibility, low utilization, and high breeding costs. Therefore, a light- and temperature-controlled recirculating aquaculture system for breeding broodstock is proposed to address these issues. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, this invention provides a light- and temperature-controlled circulating water broodstock breeding system, which features simple structure and easy assembly, high mechanical strength, heat insulation, suitability for breeding various fish species, planned batch breeding of broodstock, environmental protection and controllability, green energy saving and water saving, non-toxic and pollution-free, and durability.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A light- and temperature-controlled circulating water broodstock breeding system, characterized in that it includes a broodstock breeding module and a water treatment module;

[0006] The parent fish breeding module includes a dark room and a breeding unit, and the water treatment module includes a filtration unit, a biochemical treatment unit, a disinfection unit and an oxygenation unit, with each unit connected to the others via pipelines.

[0007] The cultivation unit is located in the dark chamber;

[0008] The cultivation unit includes a circular cone-bottom cultivation tank. An LED light is installed above the center of the cultivation tank. A water inlet pipe and an oxygen inlet pipe are tangentially installed on the upper part of the tank wall. A return water hole 1 is located in the center of the bottom of the tank. The return water hole 1 is connected to the lower return water pipe below. A drainage cover and an escape-proof cover are installed in sequence above the drainage cover. The side wall of the drainage cover is evenly provided with water permeable holes. The side wall of the escape-proof cover is evenly provided with water filtering holes. One end of the water supply pipe is connected to the return water hole 1 through a perforation in the center of the top surface of the escape-proof cover and the drainage cover. The other end is connected to the return water tray at the top of the cultivation tank through a water inlet. The return water inlet on the bottom surface of the return water tray is connected to the upper return water pipe. The upper return water pipe leads to the outside of the tank through the return water hole 2 on the side wall of the cultivation tank and finally connects to the lower return water pipe, leading to the filtration unit.

[0009] The filtration unit includes a filtration storage tank. A water level control wall is located in the center of the filtration storage tank, dividing it into a filtration tank and a storage tank. The water level control wall has water inlet holes with water-blocking plugs. The filtration tank has two side walls at one end and a rotary drum microfilter in the center. The side walls are connected to the microfilter housing, dividing the filtration tank into a maintenance tank and a microfilter tank. The maintenance tank, the microfilter tank, and the storage tank each have a drain hole 1, drain hole 2, and drain hole 3 at the center of their bottoms, connected to a drain pipe 1. Connecting pipes 1, 2, and 3 are respectively installed on these drain holes. The maintenance tank is connected to the microfilter housing. A water inlet 1 and a drain hole are provided on one side of the pool wall, which are connected to the lower return water pipe; a rotating drum is provided inside the shell of the microfilter, and the filter plate of the rotating drum has a pore diameter of 48μm. A water inlet and a drain hole are provided on the end of the shell of the microfilter near the maintenance pool. The drain pipe of the microfilter is connected to the outside through the drain hole and the drain hole in sequence; an air source heat pump and a water quality monitoring instrument are provided on the outer wall of the water storage tank, and a pump platform is provided on the upper side. A circulation pump is provided above the pump platform. The water inlet pipe of the circulation pump is inserted into the water storage tank, and the water outlet pipe of the circulation pump is connected to the biochemical treatment unit. A water inlet hole is provided on the side wall of the water storage tank below the pump platform. The water inlet hole is connected to the oxygen injection unit through an oxygen cone water inlet pipe.

[0010] The biochemical treatment unit includes a trickling filter bed and a bio-pack. The trickling filter bed is surrounded by a partition plate, with a circulating pump drain pipe at the top and a water distribution plate in the upper horizontal direction. Below the water distribution plate, there is bioblock packing material. The bio-pack has a porous partition plate arranged horizontally inside, dividing the interior of the bio-pack into a biological reaction zone and a water storage zone. Multiple disc-type microporous aerators are evenly laid on one side of the biological reaction zone of the porous partition plate. The biological reaction zone is filled with biological packing material, which is selected from K3 and polyurethane packing material, and the side length is less than the pore diameter of the porous partition plate. The side wall of the water storage zone is provided with a drain hole 4, and a drain pipe 2 is connected to the drain hole 4, leading to the disinfection unit.

[0011] The disinfection unit comprises a U-shaped pipe consisting of a left pipe, a right pipe, and a connecting pipe. Both the left and right pipes are semi-buried, with a height ratio of 2:2.5 for the above-ground portion and 1:5 for the underground portion. The upper part of the right pipe has a water inlet 2 connected to the drain pipe 2. An ozone connection hole is located in the middle of the right pipe wall, and an ozone generator is connected to the ozone connection hole via the ozone connection pipe. A multi-point oxygenation device consisting of multiple nano-oxygenation discs fixed on a multi-layer support frame is located at the bottom of the right pipe, and an oxygen tank is connected to the nano-oxygenation discs via an oxygen delivery pipe. The ultraviolet disinfection device is located in the middle of the left pipe and includes six ultraviolet lamps arranged circumferentially along the inner wall of the left pipe. A drain hole 5 is located in the upper part of the left pipe wall, and the water inlet pipe is connected to the drain hole 5, leading to the cultivation unit.

[0012] The oxygenation unit includes an oxygen cone, an oxygen cone water inlet pipe, and an oxygen cone water injection pipe. The oxygen cone water inlet pipe, the oxygen cone, and the oxygen cone water injection pipe are connected in sequence and lead to the oxygen inlet pipe of the cultivation unit.

[0013] Preferably, the cultivation tank, filtration storage tank, water level control wall, side baffle wall, pump platform, enclosure, biological bag, porous partition, left pipe, right pipe, and connecting pipe are made of fiberglass; the microfilter shell, drum, air source heat pump, water quality monitor, circulation pump, ozone generator, multi-layer support frame, and oxygen cone are made of stainless steel; and the inlet pipe, oxygen inlet pipe, lower return water pipe, drain cover, escape prevention cover, water supply pipe, return water tray, upper return water pipe, drain pipe 1, connecting pipe 1, connecting pipe 2, connecting pipe 3, microfilter sewage pipe, circulation pump water inlet pipe, circulation pump drain pipe, oxygen cone water inlet pipe, water distribution plate, drain pipe 2, ozone connecting pipe, oxygen supply pipe, and oxygen cone water injection pipe are made of polyethylene, polyvinyl chloride, or polypropylene.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The water storage containers (including cultivation ponds, filter storage ponds, biological bags, U-shaped pipes, etc.) in the broodstock breeding system provided by this invention are all made of fiberglass reinforced plastic (FRP) sheet with a thickness of 5-8cm. The main body and support (multi-layer support frame, etc.) of the water treatment equipment (including rotary drum microfilter, air source heat pump, water quality monitor, circulation pump, ozone generator, oxygen cone, etc.) are made of stainless steel. The water supply pipeline is made of polyethylene, polyvinyl chloride or polypropylene. It has the characteristics of light weight, high mechanical strength, corrosion resistance, good thermal insulation performance, smooth surface, non-toxic and non-polluting, and not easy to age and wear. It has the advantages of easy installation, easy movement, easy maintenance and long service life during use.

[0016] 2. The broodstock breeding module provided by this invention is located in a dark room, which fully isolates external light sources. Each breeding pond is equipped with an LED light to provide illumination for the broodstock breeding. The color temperature and brightness of the LED light provided by this invention can be infinitely adjusted. During the broodstock breeding process, the light source of the breeding environment is precisely controllable, and the gonadal development stage of the broodstock can be orderly regulated in accordance with the breeding plan.

[0017] 3. The thickness of the upper edge of the sidewall of the cultivation pool provided by this invention is three times the thickness of the main body of the sidewall. Compared with cultivation pools where the sidewall thickness is uniform from top to bottom and without special structural reinforcement, this invention better meets the requirements of engineering mechanics, effectively improving the compressive strength of the upper edge of the sidewall and the maximum load-bearing capacity of the cultivation pool, reaching up to 30m. 3 Water body. The rearing pond is circular, with smooth water flow and no dead corners. The bottom of the pond is inverted cone-shaped with a slope of 8%-12% and a drainage hole in the center. The fiberglass material is smooth and flat, making it easy to clean. During the rearing of broodstock, water flows into the rearing pond through the tangentially installed water inlet pipe on the upper side wall, driving the water flow inside the pond. The return water hole 1 at the bottom of the rearing pond, together with the return water tray and return water hole 2 above, works together to discharge sewage, greatly improving the self-cleaning ability. Fish feces, uneaten feed and foam can be quickly discharged, which also increases the maximum stocking density of the fish pond.

[0018] 4. The water treatment module provided by this invention consists of a filtration unit for removing solid impurities, regulating water temperature, and storing water; a biochemical treatment unit for removing carbon dioxide, ammonia nitrogen, and nitrite nitrogen and adjusting pH; a disinfection unit for dual ozone and ultraviolet disinfection with micro-oxygenation; and an oxygenation unit for high-efficiency oxygenation via an oxygen cone. The filtration unit uses a rotary drum microfilter with a filtration accuracy of 48μm and a solid particle removal rate of over 95%. The water level control wall ensures that the real-time effective filtration area of ​​the microfilter drum is ≥75% of the total filtration area of ​​the drum, resulting in high filtration efficiency and an automatic backwashing function. An air source heat pump is used for water temperature regulation and real-time water quality monitoring, offering advantages of high efficiency, energy saving, and safety. The biochemical treatment unit adopts a "fixed bed + fluidized bed" structure. The trickling bed uses bioblock packing to break up the water flow after pretreatment by the water distribution plate, promoting the efficient escape of carbon dioxide. The biological reaction zone of the bio-pack uses K3 and polyurethane packing, which can efficiently colonize nitrifying and denitrifying bacteria. Multiple disc-type microporous aerators are laid on one side of the porous partition biological reaction zone. Driven by airflow, the upper biological packing can fully tumble and rotate, facilitating efficient nitrification and denitrification reactions. The disinfection unit uses a dual ozone and ultraviolet disinfection method. First, a high-concentration ozone generator is used to prepare ozone for thorough disinfection of the circulating water. Then, a UV disinfection device consisting of six UV lamps arranged in a ring provides more thorough disinfection, achieving a sterilization rate of ≥95%. At the bottom of the U-shaped pipe, where the water pressure is highest, a multi-point oxygenation device composed of nano-oxygenation discs effectively improves oxygenation efficiency. The water treatment module operates efficiently, with a treatment capacity of up to 500m³. 3The system can simultaneously process the wastewater from 12 breeding units and provide sufficient circulating water for breeding, supporting high-density broodstock breeding. In addition, the biological package and U-shaped pipe in the water treatment module make full use of the longitudinal space, occupying a small area, making it suitable for factory-scale fully artificial breeding.

[0019] 5. The broodstock breeding system provided by this invention features safe and stable operation. The water level control wall of the filtration unit, the central component of the water treatment module, is equipped with water inlet holes. Under normal conditions, connecting pipes 1, 2, and 3 are upright, with a water-blocking plug placed in the center of the water inlet holes, keeping them closed. Circulating water flows along the water level control wall from the microfiltration tank to the storage tank, with the circulation pump partially activated. When the water level in the storage tank is too high, the connecting pipes are lowered to drain water, and all circulation pumps are activated to lower the water level. When the water level in the storage tank is insufficient, the water-blocking plug is removed, and the water inlet holes are opened, allowing circulating water to flow from the microfiltration tank to the storage tank, ensuring a stable supply of circulating water to the broodstock breeding module. In the disinfection unit, the ultraviolet disinfection device is located after the ozone generator. While improving the sterilization effect, it also degrades residual ozone in the circulating water, avoiding adverse effects on farmed animals. Furthermore, the entire broodstock breeding system is fully enclosed and self-circulating, effectively preventing external pathogens from entering the system, reducing disease outbreaks, and thus achieving stable breeding and safe production.

[0020] 6. In the broodstock breeding system provided by this invention, only the filtration unit and the biochemical treatment unit require a circulation pump to transport circulating water from the storage tank to above the trickling filter. In other parts, the circulating water is transported using gravitational potential energy. For example, the circulating water flows from the breeding unit to the filtration unit using the gravitational potential energy obtained from the top to the bottom of the return pipe; from the biochemical treatment unit to the disinfection unit using the gravitational potential energy obtained from the top of the trickling filter to the bottom of the bio-bag; and from the disinfection unit to the breeding unit using the gravitational potential energy obtained from the circulating water near the U-shaped end of the inlet pipe to the end near the breeding tank. In addition, the water treatment equipment selected in the system, such as the rotary drum microfilter and the air source heat pump, have low energy consumption. Compared with the traditional broodstock breeding method, it can save more than 90% of water resources, and has the characteristics of green energy saving and water saving.

[0021] 7. The broodstock breeding system provided by this invention can be used to breed broodstock of various fish species. According to the different living habits of broodstock, the water temperature, light, dissolved oxygen, flow rate and other factors can be precisely adjusted by using equipment such as air source heat pumps, LED lights, oxygen cones, multi-point oxygenation devices, water quality monitors, and circulation pumps to meet the requirements of broodstock breeding of different fish species. It has the characteristics of being multi-purpose and having a high utilization rate. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the overall structure of the parent fish breeding system provided by the present invention;

[0024] Figure 2 This is a flowchart illustrating the operation of the parent fish breeding system provided by the present invention.

[0025] Figure 3 A perspective structural diagram of the parent fish breeding module provided by the present invention;

[0026] Figure 4 This is a perspective structural diagram of the water treatment module provided by the present invention;

[0027] Figure 5 A perspective structural diagram of the cultivation unit provided in this invention;

[0028] Figure 6 A perspective structural diagram of the filtering unit provided by the present invention;

[0029] Figure 7 A perspective structural diagram of the biochemical processing unit provided by the present invention;

[0030] Figure 8 A perspective structural diagram of the disinfection unit provided by the present invention;

[0031] In the diagram, 1. Darkroom, 2. Cultivation unit, 3. Filtration unit, 4. Biochemical treatment unit, 5. Disinfection unit, 6. Oxygenation unit, 201. Cultivation tank, 202. LED light, 203. Inlet pipe, 204. Oxygen inlet pipe, 205. Return water hole 1, 206. Lower return water pipe, 207. Drainage cover, 208. Escape prevention cover, 209. Water permeability hole, 210. Filter hole, 211. Water supply pipe, 212. Water inlet, 213. Return water tray, 214. Return water inlet, 215. Upper return water pipe, 216. Return water hole 2, 301. Filter storage tank, 302. Water level control wall, 303. Filter tank, 3 04. Water storage tank; 305. Water inlet; 306. Water baffle; 307. Side retaining wall; 308. Microfilter housing; 309. Maintenance tank; 310. Microfilter tank; 311. Drain pipe 1; 312. Drain hole 1; 313. Drain hole 2; 314. Drain hole 3; 315. Connecting pipe 1; 316. Connecting pipe 2; 317. Connecting pipe 3; 318. Inlet hole 1; 319. Sewage outlet; 320. Rotary drum; 321. Inlet; 322. Sewage outlet; 3 23. Sewage pipe; 324. Air source heat pump; 325. Water quality monitoring instrument; 326. Pump platform; 327. Circulating pump; 328. Circulating pump inlet pipe; 329. Circulating pump outlet pipe; 330. Water inlet hole; 331. Oxygen cone inlet pipe; 401. Trickling filter bed; 402. Biopack; 403. Enclosure; 404. Water distribution plate; 405. Bioblock packing material; 406. Porous partition; 407. Bioreactor zone; 408. Water storage zone; 409. Disc micro-type 410. Aerator with perforated holes; 411. Biological packing material; 412. Drain hole 4; 501. Drain pipe 2; 502. Right pipe; 503. Connecting pipe; 504. Water inlet hole 2; 505. Ozone connecting hole; 506. Ozone generator; 507. Ozone connecting pipe; 508. Multi-layer support frame; 509. Nano oxygenation disc; 510. Oxygen tank; 511. Oxygen supply pipe; 512. Ultraviolet lamp; 513. Drain hole 5; 601. Oxygen cone; 602. Oxygen cone water injection pipe. Detailed Implementation

[0032] like Figure 1-8 As shown, a light- and temperature-controlled circulating water broodstock breeding system includes a broodstock breeding module and a water treatment module;

[0033] The parent fish breeding module includes a dark room 1 and 12 breeding units 2. The water treatment module includes a filtration unit 3, 4 biological treatment units 4, a disinfection unit 5 and an oxygenation unit 6. All units are interconnected through pipelines.

[0034] Cultivation unit 2 is located in dark chamber 1;

[0035] The cultivation unit 2 includes a circular conical-bottom cultivation tank 201 with a diameter of 5m, a height of 1.2m, and a bottom slope of 10%. An LED light 202 is installed above the center of the cultivation tank 201. A water inlet pipe 203 and an oxygen inlet pipe 204 are tangentially installed on the upper part of the tank wall. A return water hole 1205 is located in the center of the bottom of the tank. The return water hole 1205 is connected to the lower return water pipe 206 below. A drainage cover 207 and an escape prevention cover 208 are installed above it in sequence. The side wall of the drainage cover 207 is evenly provided with water permeable holes 209, and the side wall of the escape prevention cover 208 is evenly provided with water filter holes 210. One end of the water supply pipe 211 passes through the central perforation on the top surface of the drainage cover 207 and the escape prevention cover 208 and connects to the return water hole 1205. 205 is connected to the other end, and the other end is connected to the return water tray 213 on the upper part of the cultivation tank 201 through the water inlet 212. The return water inlet 214 on the bottom surface of the return water tray is connected to the upper return water pipe 215. The upper return water pipe 215 leads to the outside of the tank through the return water hole 2 216 on the side wall of the cultivation tank 201, and finally connects to the lower return water pipe 206, leading to the filter unit 3.

[0036] The filtration unit 3 includes a filtration storage tank 301. A water level control wall 302 is located in the center of the filtration storage tank 301, dividing it into a filtration tank 303 and a storage tank 304. A water inlet 305 is located on the water level control wall 302, and a water-blocking plug 306 is located on the water inlet 305. Two side baffles 307 are located at one end of the filtration tank 303, and a rotary drum microfilter is located in the center. The side baffles 307 are connected to the microfilter housing 308, dividing the filtration tank 303 into a maintenance tank 309 and a microfilter tank 310. Drainage holes 1 312, 2 313, and 3314, respectively, are located at the center of the bottom of the maintenance tank 309, the microfilter tank 310, and the storage tank 304, communicating with the drain pipe 1 311. Connecting pipes 1 315, 2 316, and 3314 are respectively provided on these holes. 317; The maintenance tank 309 has an inlet hole 1 on the side wall opposite to the microfilter housing 308, which connects to the lower return water pipe 206. 318 and drain hole 319; a rotating drum 320 is installed inside the microfilter housing 308, the filter plate of the rotating drum 320 has a pore size of 48μm, the microfilter housing 308 is provided with an inlet 321 and a drain hole 322 at one end near the maintenance tank 309, and the microfilter drain pipe 323 is connected to the outside through the drain hole 322 and the drain hole 319 in sequence; an air source heat pump 324 and a water quality monitoring instrument 325 are installed on the outer wall of the water storage tank 304, a pump platform 326 is provided on the upper side, a circulation pump 327 is provided above the pump platform 326, the circulation pump water inlet pipe 328 is inserted into the water storage tank 304, and the circulation pump drain pipe 329 is connected to the biochemical treatment unit 4; a water inlet hole 330 is provided on the side wall of the water storage tank 304 below the pump platform 326, and the water inlet hole 330 is connected to the oxygen injection unit 6 through the oxygen cone water inlet pipe 331;

[0037] The biochemical treatment unit 4 includes a trickling filter bed 401 and a bio-pack 402. The trickling filter bed 401 is surrounded by a surrounding plate 403. A circulating pump drain pipe 329 is installed above it. A water distribution plate 404 is installed horizontally on the upper layer. Bioblock packing material 405 is installed below the water distribution plate. A porous partition 406 with a pore diameter of 5cm is installed horizontally inside the bio-pack 402, which divides the inside of the bio-pack 402 into a biological reaction zone 407 and a water storage zone 408. Multiple disc-type microporous aerators 409 are evenly laid on one side of the biological reaction zone of the porous partition 406. The biological reaction zone 407 is filled with biological packing material 410, which is K3 and polyurethane packing material with a side length of 8cm. The side wall of the water storage zone 408 is provided with a drain hole 4411. A drain pipe 2412 is connected to the drain hole 4411 and leads to the disinfection unit 5.

[0038] The disinfection unit 5 includes a U-shaped pipe consisting of a left pipe 501, a right pipe 502, and a connecting pipe 503. Both the left pipe 501 and the right pipe 502 are semi-buried, with a height of 2m above ground and 2.5m underground. The left pipe 501 has a diameter of 0.5m, and the right pipe 502 has a diameter of 2.5m. The upper wall of the right pipe 502 is provided with a water inlet 2 504, which connects to the drain pipe 2. 512 is connected; the right tube 502 has an ozone connection hole 505 in the middle of its wall, and the ozone generator 506 is connected to the ozone connection hole 505 through the ozone connection pipe 507; a multi-point oxygenation device consisting of multiple nano-oxygenation discs 509 fixed on a multi-layer support frame 508 is located at the bottom of the right tube 502, and the oxygen tank 510 is connected to the nano-oxygenation discs 509 through the oxygen delivery pipe 511; an ultraviolet disinfection device is located in the middle of the left tube 501, including 6 ultraviolet lamps 512 arranged circumferentially along the inner wall of the left tube 501, and a drain hole 5 513 is provided on the upper part of the left tube 501, and the water inlet pipe 203 is connected to the drain hole 5 513, leading to the cultivation unit 2;

[0039] Oxygenation unit 6 includes oxygen cone 601, oxygen cone water inlet pipe 331 and oxygen cone water injection pipe 602, which are connected in sequence to oxygen inlet pipe 204 leading to cultivation unit 2.

[0040] The following components are constructed primarily of fiberglass: a cultivation tank 201, a filtration and storage tank 301, a water level control wall 302, a side retaining wall 307, a pump platform 326, a surrounding panel 403, a biological pack 402, a porous partition 406, a left pipe 501, a right pipe 502, and a connecting pipe 503. The following components are constructed primarily of stainless steel: a microfiltration unit housing 308, a rotary drum 320, an air source heat pump 324, a water quality monitor 325, a circulation pump 327, an ozone generator 506, a multi-layer support frame 508, and an oxygen cone 601. The following components are constructed primarily of polyethylene: an inlet pipe 203, an oxygen inlet pipe 204, a lower return water pipe 206, a drainage cover 207, an escape prevention cover 208, a water delivery pipe 211, a return water tray 213, an upper return water pipe 215, a drainage pipe 1 311, a connecting pipe 1 315, a connecting pipe 2 316, and a connecting pipe 3. 317. Microfilter drain pipe; 323. Circulating pump inlet pipe; 328. Circulating pump outlet pipe; 329. Oxygen cone inlet pipe; 331. Water distribution plate; 404. Drainage pipe; 412. Ozone connecting pipe; 507. Oxygen supply pipe; 511. Oxygen cone water injection pipe; 602.

[0041] During broodstock rearing, equipment such as air source heat pump 324, LED light 202, oxygen cone 601, multi-point oxygenation device, water quality monitor 325, and circulation pump 327 are adjusted according to the different living habits of broodstock to precisely regulate water temperature, light, dissolved oxygen, flow rate, etc., to meet the requirements of broodstock rearing for different fish species.

[0042] The 325 water quality monitor can monitor dissolved oxygen, pH, ammonia nitrogen, nitrite nitrogen, conductivity, turbidity and other indicators of circulating water in real time. It can realize online acquisition, intelligent processing, wireless transmission, over-limit alarm and remote management of water quality parameters, further improving the stability of system operation and the safety of broodstock breeding.

[0043] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A light- and temperature-controlled circulating aquatic broodstock rearing system, characterized in that: Includes a broodstock breeding module and a water treatment module; The parent fish breeding module includes a dark room (1) and a breeding unit (2). The water treatment module includes a filtration unit (3), a biochemical treatment unit (4), a disinfection unit (5), and an oxygenation unit (6). Each unit is interconnected through pipelines.

2. A light- and temperature-controlled circulating aquatic broodstock rearing system, characterized in that: The cultivation unit (2) is located in the dark chamber (1).

3. A light- and temperature-controlled circulating aquatic broodstock rearing system, characterized in that: The cultivation unit (2) includes a circular cone-bottom cultivation tank (201). An LED light (202) is provided above the center of the cultivation tank (201). A water inlet pipe (203) and an oxygen inlet pipe (204) are tangentially provided above the tank wall. A return water hole 1 (205) is provided in the center of the bottom of the tank. The return water hole 1 (205) is connected to the lower return water pipe (206) below. A drainage cover (207) and an escape prevention cover (208) are provided above it in sequence. The side wall of the drainage cover (207) is evenly provided with water permeable holes (209), and the side wall of the escape prevention cover (208) is evenly provided with water filter holes (210). One end of the water supply pipe (211) is connected to the return water hole 1 (205) through the central perforation on the top surface of the escape-proof cover (208) and the drainage cover (207), and the other end is connected to the return water tray (213) on the upper part of the cultivation tank (201) through the water supply port (212). The return water port (214) on the bottom surface of the return water tray is connected to the upper return water pipe (215). The upper return water pipe (215) leads to the outside of the tank through the return water hole 2 (216) on the side wall of the cultivation tank (201), and finally connects to the lower return water pipe (206) and leads to the filter unit (3).

4. A light- and temperature-controlled circulating aquatic broodstock rearing system, characterized in that: The filtration unit (3) includes a filtration storage tank (301), with a water level control wall (302) in the center of the filtration storage tank (301), dividing the filtration storage tank (301) into a filtration tank (303) and a storage tank (304). The water level control wall (302) is provided with a water inlet (305), and a water-blocking plug (306) is provided on the water inlet (305). The filtration tank (303) has two side baffles (307) at one end and a rotary drum microfilter in the center. The side baffles (307) and the microfilter housing are connected. (308) Connected, the filter tank (303) is divided into a maintenance tank (309) and a microfilter tank (310); the maintenance tank (309), the microfilter tank (310) and the water storage tank (304) are respectively provided with drainage holes 1 (312), 2 (313) and 3 (314) communicating with the drainage pipe 1 (311) at the center of the bottom of the tank, and respectively provided with connecting pipes 1 (315), 2 (316) and 3 (317); the maintenance tank (309) and the microfilter housing (308) are connected. 8) The opposite side of the pool wall is provided with an inlet hole 1 (318) and a drain hole (319) connected to the lower return water pipe (206); the microfilter housing (308) is provided with a rotating drum (320), the filter plate of the rotating drum (320) has a pore size of 48μm, the microfilter housing (308) is provided with an inlet (321) and a drain hole (322) at the end near the maintenance pool (309), and the microfilter drain pipe (323) is connected to the outside through the drain hole (322) and the drain hole (319) in sequence; the water storage pool (304) An air source heat pump (324) and a water quality monitoring instrument (325) are provided on the outer wall. A pump platform (326) is provided on the upper side. A circulation pump (327) is provided above the pump platform (326). The water inlet pipe (328) of the circulation pump is inserted into the water storage tank (304). The drain pipe (329) of the circulation pump leads to the biochemical treatment unit (4). A water inlet hole (330) is provided on the side wall of the water storage tank (304) below the pump platform (326). The water inlet hole (330) is connected to the oxygen injection unit (6) through the oxygen cone water inlet pipe (331).

5. A light- and temperature-controlled circulating aquatic broodstock rearing system, characterized in that: The biochemical treatment unit (4) includes a trickling filter (401) and a bio-pack (402); the trickling filter (401) is surrounded by a surrounding plate (403), with a circulating pump drain pipe (329) above it, a water distribution plate (404) in the upper horizontal direction, and bioblock packing material (405) below the water distribution plate; a porous partition (406) is provided horizontally inside the bio-pack (402), dividing the inside of the bio-pack (402) into a biological reaction zone (407) and a water storage zone (408). 408), multiple disc-type microporous aerators (409) are evenly laid on one side of the bioreactor zone of the porous partition (406). The bioreactor zone (407) is filled with biological packing material (410). The biological packing material (410) is selected from K3 and polyurethane packing material, and the side length is less than the pore diameter of the porous partition (406). The side wall of the water storage zone (408) is provided with drainage hole 4 (411). Drainage pipe 2 (412) is connected to the drainage hole 4 (411) and leads to the disinfection unit (5).

6. A light- and temperature-controlled circulating aquatic broodstock rearing system, characterized in that: The disinfection unit (5) includes a U-shaped pipe consisting of a left pipe (501), a right pipe (502), and a connecting pipe (503). Both the left pipe (501) and the right pipe (502) are semi-buried, with the ratio of the height of the above-ground portion to the height of the underground portion being 2:2.

5. The ratio of the diameter of the left pipe (501) to the diameter of the right pipe (502) is 1:

5. The upper part of the right pipe (502) is provided with a water inlet 2 (504), which is connected to the drain pipe 2 (512). The middle part of the right pipe (502) is provided with an ozone connecting hole (505), and the ozone generator (506) is connected to the ozone connecting pipe (503). 7) Connected to the ozone communication hole (505); a multi-point oxygenation device consisting of multiple nano-oxygenation discs (509) fixed on a multi-layer support frame (508) is located at the bottom of the right tube (502), and the oxygen tank (510) is connected to the nano-oxygenation discs (509) through the oxygen delivery pipe (511); the ultraviolet disinfection device is located in the middle of the left tube (501), including 6 ultraviolet lamps (512) arranged circumferentially along the inner wall of the left tube (501), and the upper part of the left tube (501) is provided with a drain hole 5 (513), and the water inlet pipe (203) is connected to the drain hole 5 (513) and leads to the cultivation unit (2).

7. A light- and temperature-controlled circulating aquatic broodstock rearing system, characterized in that: The oxygenation unit (6) includes an oxygen cone (601), an oxygen cone water inlet pipe (331), and an oxygen cone water injection pipe (602). The oxygen cone water inlet pipe (331), the oxygen cone (601), and the oxygen cone water injection pipe (602) are connected in sequence to the oxygen inlet pipe (204) of the cultivation unit (2).

8. A light- and temperature-controlled circulating aquatic broodstock breeding system, characterized in that: The cultivation tank (201), filtration storage tank (301), water level control wall (302), side retaining wall (307), pump platform (326), enclosure (403), biological bag (402), porous partition (406), left pipe (501), right pipe (502), and connecting pipe (503) are made of fiberglass. The microfilter shell (308), drum (320), air source heat pump (324), water quality monitor (325), circulation pump (327), ozone generator (506), multi-layer support frame (508), and oxygen cone (601) are made of stainless steel. The water inlet pipe (203) and oxygen inlet pipe (204) are made of fiberglass. 04) The following components are made of polyethylene, polyvinyl chloride or polypropylene: lower return water pipe (206), drain cover (207), escape cover (208), water supply pipe (211), return water tray (213), upper return water pipe (215), drain pipe 1 (311), connecting pipe 1 (315), connecting pipe 2 (316), connecting pipe 3 (317), microfilter drain pipe (323), circulating pump water inlet pipe (328), circulating pump drain pipe (329), oxygen cone water inlet pipe (331), water distribution plate (404), drain pipe 2 (412), ozone connecting pipe (507), oxygen supply pipe (511), and oxygen cone water injection pipe (602).

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