Fish and vegetable symbiotic system

Abstract

According to the fish and vegetable symbiotic system provided by the embodiment of the invention, the fish manure treatment equipment is used for carrying out vertical flow separation, filtration and fermentation on culture sewage, and particulate matters such as fish manure in the culture sewage are fully treated, so that organic matters in the particulate matters are dissolved in primary tail water; the protein separation equipment is used for continuously carrying out protein separation on organic matters in the primary tail water, and the nitrification equipment is used for converting ammonia nitrogen in the culture sewage into nitrate which can be absorbed by plants, so that the ammonia nitrogen in the culture sewage of the fish culture system is removed, dissolved oxygen in the culture water is increased, and fishes can grow healthily; according to the system, ammonia nitrogen contained in the culture water of the fish culture system is fully utilized, so that fertilizers required by the plants do not need to be regularly and quantitatively applied to the plants, a large amount of labor cost does not need to be input, and various fertilizers do not need to be purchased with high economic cost; and the input cost of hydroponic plant cultivation is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of aquaponics, and in particular, to an aquaponics system. Background Art

[0002] With the popularization of agricultural Internet of Things technology and the combination of pure organic farming and planting at this stage, more and more capital is pouring into the field of indoor planting and breeding with relatively high food safety, such as fish-vegetable symbiosis. Fish-vegetable symbiosis is a new type of compound farming system. It combines aquaculture and vegetable production, two originally completely different farming technologies, through ingenious ecological design to achieve scientific synergy and symbiosis, thereby achieving the ecological symbiosis effect of raising fish without changing water and worrying about water quality, and growing vegetables without fertilizing and growing normally. Achieving a harmonious ecological balance between animals, plants, and microorganisms is a sustainable, circular, zero-emission, low-carbon production model in the future, and it is also the most effective way to effectively solve the agricultural ecological crisis.

[0003] In the existing fish-vegetable symbiotic system, the wastewater containing fish feces and leftover bait discharged from the aquaculture unit generally flows into the soilless cultivation planting bed. The planting bed adopts a matrix or hydroponic form, and mainly relies on microorganisms to decompose fish feces and leftover bait. Over time, it is easy to produce harmful microorganisms and toxic gases, which is not conducive to the growth of fish and vegetables. Summary of the invention

[0004] In an embodiment of the present application, a fish-vegetable symbiotic system is provided to solve the problem that the aquaculture wastewater of the existing hydroponic system directly flows into the soilless cultivation system, cannot be decomposed and absorbed by fish and vegetables, and easily produces harmful substances.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] An aquaponics system provided in an embodiment of the present application includes a fish farming system, a farming water purification and conversion system, a farming water and nutrient solution storage system, and a plant cultivation and purification system, which are sequentially connected to form a circulation loop;

[0007] The fish breeding system comprises a breeding tank, wherein the breeding tank contains breeding water required for breeding aquatic organisms, and the breeding tank is connected to the breeding water purification and conversion system to discharge breeding wastewater to the breeding water purification and conversion system;

[0008] The aquaculture water purification and conversion system comprises a fish manure treatment device, a protein separation device and a nitrification device connected in sequence, wherein the fish manure treatment device is used to perform vertical flow separation, filtration and fermentation on aquaculture wastewater to obtain primary tail water rich in organic matter; the protein separation device performs protein separation on organic matter in the treated primary tail water to obtain secondary tail water; the nitrification device performs nitrification on organic matter in the secondary tail water after protein treatment to obtain tertiary tail water;

[0009] The aquaculture water and nutrient solution storage system comprises an aquaculture water storage tank, an aquaculture water inlet device and an aquaculture water return device; one end of the aquaculture water inlet device and the aquaculture water return device are connected to the plant cultivation purification system, the other end of the aquaculture water inlet device is connected to the aquaculture water storage tank, and the other end of the aquaculture water return device is connected to the aquaculture tank; the aquaculture water storage tank is used to collect tertiary tail water after nitrification by the nitrification equipment, and the tertiary tail water is transported to the plant cultivation purification system after sedimentation in the aquaculture water storage tank;

[0010] The plant cultivation and purification system includes a soilless cultivation rack for cultivating plants. After the tertiary tail water purified by the aquaculture water purification and conversion system enters the soilless cultivation rack, it is purified by using the cultivated plants cultivated in the soilless cultivation rack to obtain quadruple tail water. The aquaculture water return device transports the purified quadruple tail water to the aquaculture tank.

[0011] The fish-vegetable symbiosis system provided in the embodiment of the present application has the following technical effects compared with the prior art:

[0012] The fish manure treatment equipment is used to separate, filter and ferment the aquaculture wastewater in vertical flow, and the particulate matter such as fish manure in the aquaculture water is fully treated so that the organic matter in the particulate matter is dissolved in the primary tail water. The protein separation equipment is used to further separate the organic matter in the primary tail water. The ammonia nitrogen in the aquaculture wastewater is converted into nitrates that can be absorbed by plants using the nitrification equipment, thereby removing the ammonia nitrogen in the aquaculture wastewater of the fish aquaculture system. At the same time, the dissolved oxygen in the aquaculture water is increased, and the fish can grow healthily. The treated water body is then used for the plants in the plant cultivation and purification system to absorb. The above system makes full use of the ammonia nitrogen contained in the aquaculture water of the fish aquaculture system, so there is no need to regularly and quantitatively apply the fertilizers required by the plants, no need to invest a lot of labor costs, and no need to spend high economic costs to purchase various fertilizers, thereby reducing the investment cost of hydroponic plant cultivation;

[0013] Secondly, when nutrient solution replenishment is still needed, the system is connected in series with a nutrient solution storage tank to realize the replenishment of nutrient solution in the system, and the four-time tail water after being absorbed and purified by the plants is returned to the nutrient solution storage tank or the fish breeding system through the setting of the water inlet device and the water return device, so that the nutrient solution with a concentration that meets the survival standard of fish feces can be selectively returned to the fish breeding system without additional discharge; further realizing the circulation of breeding water when the system adds nutrient solution, thereby improving the compatibility of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0015] Figure 1 A schematic diagram of a top view of a fish-vegetable symbiosis system provided in an embodiment of the present application;

[0016] Figure 2 for Figure 1 Schematic diagram of the main structure;

[0017] Figure 3 A schematic diagram of the cross-sectional structure of a breeding tank provided in an embodiment of the present application;

[0018] Figure 4 A schematic diagram of the structure of a protein separation device and a nitration device provided in an embodiment of the present application;

[0019] Figure 5 A schematic diagram of the structure of the aquaculture water and nutrient solution storage system provided in the embodiment of the present application;

[0020] Figure 6 A schematic diagram of the pipe connection of the aquaculture water and nutrient solution storage system provided in the first embodiment of the present application;

[0021] Figure 7 A schematic diagram of the pipe connection of the aquaculture water and nutrient solution storage system provided in the second embodiment of the present application;

[0022] Figure 8 A schematic diagram of the main structure of a fish excrement treatment device provided in an embodiment of the present application;

[0023] Fig. 9 for Figure 8 Schematic diagram of the internal structure;

[0024] Fig.10 A schematic diagram of the structure of the top water outlet chamber provided in an embodiment of the present application;

[0025] Fig.11 for Figure 8 A schematic diagram of a top view structure;

[0026] Fig.12 A schematic diagram of the positions of the vertical flow separation chamber and the filter chamber provided in the embodiment of the present application;

[0027] Fig.13 for Figure 8 Schematic diagram of the lateral structure;

[0028] Fig.14 for Fig.13 A schematic cross-sectional structure diagram of;

[0029] Fig.15 A schematic diagram of the structure of a soilless cultivation rack provided in an embodiment of the present application;

[0030] Fig.16 A schematic diagram of the structure of a soilless cultivation device provided in an embodiment of the present application;

[0031] Fig.17 A schematic diagram of the installation structure of the nutrient solution conducting member provided in the embodiment of the present application;

[0032] Fig.18 for Fig.16 A schematic diagram of a top view structure;

[0033] Fig.19 A schematic diagram of the structure of the partition provided in the embodiment of the present application;

[0034] Fig. 20 This is a schematic diagram of the lateral structure of the soilless cultivation device provided in an embodiment of the present application.

[0035] The following are marked in the accompanying drawings:

[0036] Fish breeding system 1000, breeding water purification and conversion system 2000, breeding water and nutrient solution storage system 3000, plant cultivation and purification system 4000;

[0037] Soilless cultivation rack 100, fish manure processing equipment 200, protein separation equipment 300, nitrification equipment 400;

[0038] Breeding tank 1001, circulation pump 1002, oxygen supply tray 1003, screen type vertical pole 1004;

[0039] Aquaculture water storage tank 3010, aquaculture water inlet pipeline 3020, aquaculture water return pipeline 3030, nutrient solution storage tank 3040, nutrient solution inlet pipeline 3050, nutrient solution return pipeline 3060, aquaculture water return pipeline 3070;

[0040] Protein separation barrel 310, diverter plate 320, foam collection barrel 330, water inlet 340, water outlet 350, foam return port 360, flushing port 370, overflow liquid inlet 380, and inflation inlet 390;

[0041] Soilless cultivation device 110, cultivation frame 120, tank body 11, partition 12, nutrient solution conducting member 13, planting cavity 111, nutrient solution cavity 112, supporting boss 113, first installation positioning hole 121, second installation positioning hole 122, conducting part 131, supply part 132;

[0042] Vertical flow separation chamber 210, aquaculture water inlet 211, aquaculture water outlet 212, vertical flow separation device 213, top water outlet chamber 214, bottom water inlet chamber 215, collecting funnel 216, first vertical sleeve 2131, second vertical sleeve 2132, horizontal partition 2133, third vertical sleeve 2134, overflow hole 21331, sawtooth 21341;

[0043] Filter chamber 220, filter device 221, filter residue collection chamber 2201, aquaculture water collection chamber 2202, folding side cover 2203, liquid inlet nozzle assembly 2211, filter assembly 2212, high-pressure cleaning assembly 2213, flushing pump 22131, high-pressure flushing pipeline 22132, high-pressure flushing nozzle 22133;

[0044] Collecting and fermenting chamber 230, collecting chamber 231, fermentation chamber 232, observation port 2301, installation cavity 2302, collecting chamber inclined plate 2311, collecting chamber filter residue discharge pipeline 2312, collecting chamber overflow port 2313, sewage pump 2321, sewage self-circulation pipeline 2322, reflux pipeline 2323, fermentation chamber inclined plate 2324, heating component 2325. DETAILED DESCRIPTION

[0045] The embodiment of the present invention discloses a fish-vegetable symbiotic system to solve the problem that the aquaculture wastewater of the existing hydroponic system directly flows into the soilless cultivation system, cannot be decomposed and absorbed by fish and vegetables, and easily produces harmful substances.

[0046] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0047] See also Figure 1-2 , Figure 1 A schematic diagram of a top view of a fish-vegetable symbiosis system provided in an embodiment of the present application; Figure 2 for Figure 1 Schematic diagram of the main structure.

[0048] In a specific embodiment, the fish-vegetable symbiotic system provided by the present application includes a fish farming system 1000, a farming water purification and conversion system 2000, a farming water and nutrient solution storage system 3000, and a plant cultivation purification system 4000, which are sequentially connected to form a circulation loop, wherein the heights of the farming water purification and conversion system 2000 and the farming water and nutrient solution storage system 3000 are successively reduced, so that the farming water can be transported in the above two systems only by the height difference of the pipeline liquid level.

[0049] The working principle of the present application is as follows: the aquaculture wastewater is vertically separated, filtered and fermented by the fish manure treatment equipment 200, and the particulate matter such as fish manure in the aquaculture water is fully treated so that the organic matter in the particulate matter is dissolved in the primary tail water, and the organic matter in the primary tail water is further separated by the protein separation equipment 300, and the ammonia nitrogen in the aquaculture wastewater is converted into nitrates that can be absorbed by plants by the nitrification equipment 400, thereby removing the ammonia nitrogen in the aquaculture wastewater of the fish aquaculture system 1000, and at the same time, the dissolved oxygen in the aquaculture water is increased, and the fish can grow healthily; the treated water body is then supplied to the plants in the plant cultivation and purification system 4000 for absorption, and the above system makes full use of the ammonia nitrogen contained in the aquaculture water of the fish aquaculture system 1000, so that there is no need to regularly and quantitatively apply the fertilizers required by the plants, no need to invest a lot of labor costs, and no need to spend high economic costs to purchase various fertilizers, thereby reducing the investment cost of hydroponic plant cultivation;

[0050] Secondly, when nutrient solution replenishment is still needed, the system is connected in series with a nutrient solution storage tank 3040 to replenish the nutrient solution in the system, and the four-time tail water after being absorbed and purified by the plants is returned to the nutrient solution storage tank 3040 or the fish farming system 1000 through the setting of the water inlet device and the water return device, so that the nutrient solution with a concentration that meets the fish survival standard can be selectively returned to the fish farming system 1000 without additional discharge; further realizing the circulation of the aquaculture water when the nutrient solution is added to the system, thereby improving the compatibility of the system.

[0051] In specific application, the aquaculture water circulation process is as follows: the aquaculture water in the fish aquaculture system 1000 enters the aquaculture water purification and conversion system 2000 for three purifications, and then enters the aquaculture water and nutrient solution storage system 3000 for sedimentation, and then passes through the water inlet device through the plant cultivation purification system 4000 as cultivation water for plant absorption, and returns to the fish aquaculture system 1000 through the return water device to realize the aquaculture water circulation; when nutrient solution needs to be added to the above system, the aquaculture water containing nutrient solution can be selectively returned to the nutrient solution storage tank 3040 or the fish aquaculture system 1000 through the return water device to prevent nutrient solution that does not meet the survival standards of fish from flowing into the circulation system, causing continuous enrichment of complex salts in the system, forming excessively high water eutrophication, and causing damage to fish and vegetables.

[0052] The fish farming system 1000 of this embodiment is described in detail below.

[0053] like Figure 2-3 As shown, Figure 2 for Figure 1 Schematic diagram of the main structure; Figure 3The cross-sectional structure diagram of the breeding tank 1001 provided in the embodiment of the present application. The fish breeding system 1000 includes the breeding tank 1001, which contains breeding water required for breeding aquatic organisms. The breeding tank 1001 is connected to the breeding water purification and conversion system 2000 to discharge breeding wastewater to the breeding water purification and conversion system 2000. The breeding wastewater includes particulate matter such as fish feces, cellulose, protein and other organic residues. The breeding tank 1001 is a cylindrical barrel, and its inner wall is provided with a plurality of sewage interception devices for intercepting large particulate matter such as fish feces in the breeding tank 1001 to prevent the particulate matter in the breeding tank 1001 from being enriched and causing harm to the survival of aquatic organisms. A plurality of oxygen supply trays 1003 arranged radially are provided on the bottom wall of the breeding tank 1001. The oxygen supply trays 1003 are connected to the oxygen supply branch main pipe, and are used to supply oxygen from bottom to top into the breeding tank 1001. The oxygen supply trays are connected to an oxygen supply machine, and the oxygen supply machine is also connected to a protein separator, and oxygen is continuously supplied during the egg separation process. Among them, the number of oxygen supply trays 1003 is 6-8, which can be set according to the model of the breeding tank 1001. The breeding tank 1001 is a polypropylene (PP) barrel. In other embodiments, the material of the breeding tank 1001 can be set by itself. A screen-type vertical rod 1004 is provided at the center of the breeding tank 1001 to collect particulate matter at the center of the rotating water body, and further reduce large particulate matter in the breeding tank 1001.

[0054] A pump compartment is provided between the breeding tank 1001 and the fish manure treatment equipment 200. Two parallel circulating pumps 1002 are provided in the pump compartment to realize one backup and one use. The circulating pump 1002 pumps the breeding wastewater in the breeding tank 1001 into the fish manure treatment equipment 200 for breeding water purification.

[0055] The aquaculture water purification and conversion system 2000 of this embodiment is described in detail below.

[0056] The aquaculture water purification and conversion system 2000 includes a fish manure treatment device 200, a protein separation device 300 and a nitrification device 400 which are connected in sequence. The heights of the fish manure treatment device 200, the protein separation device 300 and the nitrification device 400 can be lowered in sequence, or the flow of aquaculture water can be achieved by setting the heights of the water inlets and outlets in the three devices.

[0057] The fish manure treatment equipment 200 is used to separate, filter and ferment the aquaculture wastewater in vertical flow, and the particulate matter such as fish manure in the aquaculture water is fully treated so that the organic matter in the particulate matter is dissolved in the primary tail water. The protein separation equipment 300 is used to further separate the protein from the organic matter in the primary tail water to obtain the secondary tail water. The nitrification equipment 400 is used to convert the ammonia nitrogen in the aquaculture wastewater into nitrate that can be absorbed by plants. The nitrification equipment 400 nitrifies the organic matter in the secondary tail water after the protein treatment to obtain the tertiary tail water. Then, the ammonia nitrogen in the aquaculture wastewater of the fish aquaculture system 1000 is removed, and at the same time, the dissolved oxygen in the aquaculture water is increased.

[0058] Embodiment 1

[0059] See also Figure 8-14 , Figure 8 A schematic diagram of the main structure of a fish excrement treatment device provided in an embodiment of the present application; Fig. 9 for Figure 8 Schematic diagram of the internal structure; Fig.10 A schematic diagram of the structure of the top water outlet chamber provided in an embodiment of the present application; Fig.11 for Figure 8 A schematic diagram of a top view structure; Fig.12 A schematic diagram of the positions of the vertical flow separation chamber and the filter chamber provided in the embodiment of the present application; Fig.13 for Figure 8 Schematic diagram of the lateral structure; Fig.14 for Fig.13 Schematic diagram of the cross-sectional structure.

[0060] In a specific embodiment, the fish manure treatment equipment 200 provided in the present application includes a vertical flow separation chamber 210, a filter chamber 220 and a collection and fermentation chamber 230; the vertical flow separation chamber 210 has an aquaculture water inlet 211 and an aquaculture water outlet 212, and the aquaculture water inlet 211 is connected to the upper-level processing unit, which is generally aquaculture equipment, such as a breeding barrel with aquatic organisms; the aquaculture water includes fish manure or feed residues, etc., the aquaculture water inlet 211 is preferably arranged at the bottom of the vertical flow separation chamber 210, and the aquaculture water outlet 212 is preferably arranged at the top of the vertical flow separation chamber 210 to increase the vertical flow separation path and improve the filtering effect. A vertical flow separation device 213 is provided in the vertical flow separation chamber 210 to realize vertical flow separation of the aquaculture water.

[0061] The aquaculture water after vertical flow separation enters the filter chamber 220. The filter chamber 220 and the vertical flow separation chamber 210 are arranged in sequence. A filter device 221 is provided in the filter chamber 220 to separate the particulate matter and clean water in the aquaculture water, and the aquaculture water with particulate matter is discharged to the collection and fermentation chamber 230 for collection and fermentation, so as to decompose the organic matter in the aquaculture water and particulate matter, so that the ammonia nitrogen with high toxicity to fish produced in the decomposition of the organic matter can be directly metabolized or secondary metabolized through the life activities of microorganisms under aerobic or anaerobic conditions, so as to fully decompose the particulate matter such as the filter residue, so as to facilitate the subsequent plants to fully utilize the organic impurities.

[0062] Among them, the vertical flow separation chamber 210, the filtration chamber 220 and the collection and fermentation chamber 230 are an integrated machine. The vertical flow separation chamber 210 and the filtration chamber 220 are located on the upper layer, and the collection and fermentation chamber 230 is located on the lower layer. In this way, several processing units are integrated into the same device, simplifying the device structure and reducing the floor space. Adjacent units can flow naturally under the action of gravity without the need for additional pumping equipment, further reducing the cost of the device.

[0063] The aquaculture water is vertically separated by the vertical flow separation device 213 in the vertical flow separation chamber 210, and the filtered aquaculture water enters the filter chamber 220 for filtering again to separate the particulate matter and clean water in the aquaculture water, collect and ferment the filtered particulate matter, decompose the harmful substances in the aquaculture wastewater and the particulate matter, discharge the harmful gases, and fully release the nutrients in the particulate matter into the water body to meet the nutritional needs of the aquaculture plants, make full use of the aquaculture wastewater, reduce the supplementation of additional nutrient reagents, and reduce the aquaculture cost.

[0064] The vertical flow separation device 213 includes a first vertical sleeve 2131, a second vertical sleeve 2132 and a horizontal partition 2133; the top of the first vertical sleeve 2131 is an open structure, and the bottom of the first vertical sleeve 2131 extends to communicate with the aquaculture water inlet 211. It can be understood that the bottom opening of the first vertical sleeve 2131 is sealed and connected to the aquaculture water inlet 211 of the vertical flow separation chamber 210, and the first vertical sleeve 2131 is flush with the wall of the vertical flow separation chamber 210 or extends to the outside of the vertical flow separation chamber 210 to facilitate connection with the aquaculture water discharge pipeline of the previous level, and can be set as needed. The second vertical sleeve 2132 is sleeved on the outside of the first vertical sleeve 2131, and a horizontal spacing is provided between the second vertical sleeve 2132 and the first vertical sleeve 2131, that is, the inner diameter of the second vertical sleeve 2132 is larger than the outer diameter of the first vertical sleeve 2131, and the bottom of the second vertical sleeve 2132 is an open structure and is connected to the inner cavity of the vertical flow separation chamber 210; the top and bottom of the second vertical sleeve 2132 are both open structures. The horizontal partition 2133 is fixedly mounted on the outside of the second vertical sleeve 2132. Preferably, the horizontal partition 2133 and the second vertical sleeve 2132 are sealed and connected. The circumferential edge of the horizontal partition 2133 is fixed and sealed to the inner wall of the vertical flow separation chamber 210, and the vertical flow separation chamber 210 is divided into a top water outlet chamber 214 and a bottom water inlet chamber 215. It can be understood that the aquaculture water inlet 211 is located in the bottom water inlet chamber 215, and the aquaculture water outlet 212 is located in the top water outlet chamber, so as to realize the vertical flow separation of aquaculture sewage from bottom to top. Among them, a plurality of overflow holes 21331 are provided on the horizontal partition 2133, and the overflow holes 21331 penetrate the horizontal partition 2133 along the wall thickness direction, so that the aquaculture water in the bottom water inlet chamber 215 can overflow to the top water outlet chamber 214, and discharge the vertical flow separation chamber 210 from the aquaculture water outlet 212 above the top water outlet chamber 214, and enter the filter chamber 220. The vertical flow separation device 213 and the vertical flow separation chamber 210 form an "S"-shaped flow path for the aquaculture sewage, which fully separates the aquaculture sewage vertically and improves the filtering effect.

[0065] The specific flow path of the aquaculture sewage in the vertical flow separation chamber 210 is as follows: the aquaculture water enters the bottom of the first vertical sleeve 2131 through the aquaculture water inlet 211, and spreads from bottom to top in the first vertical sleeve 2131, and then flows out from the top opening of the first vertical sleeve 2131, and flows from top to bottom between the outer wall of the first vertical sleeve 2131 and the inner wall of the second vertical sleeve 2132 under the action of gravity, and flows from the bottom of the second vertical sleeve 2132 into the bottom water inlet chamber 215, and the water level of the aquaculture sewage in the bottom water inlet chamber 215 gradually rises until it contacts the bottom wall of the horizontal partition 2133. At this time, the water flow speed slows down and spreads from the overflow hole 21331 to the top water outlet chamber 214. At this time, the water level continues to spread upward until the water level rises to the aquaculture water outlet 212 and flows out of the vertical flow separation chamber 210 and enters the filter chamber 220; the above-mentioned flow process, by setting the first vertical sleeve 2131, the second vertical sleeve 2132 and the horizontal partition 2133, realizes the circuitous reciprocating rise of the aquaculture water and performs vertical separation. Large particles are gathered in the bottom water inlet chamber 215, and the clean water above gradually spreads to the top water outlet chamber 214 through the horizontal partition 2133, thereby realizing the filtration separation of particles and aquaculture sewage.

[0066] In another embodiment, the vertical flow separation device 213 also includes a third vertical sleeve 2134, which is fixed to the upper surface of the horizontal partition 2133 and is sleeved on the outside of the second vertical sleeve 2132. Each overflow hole 21331 is located between the third vertical sleeve 2134 and the second vertical sleeve 2132. The third vertical sleeve 2134 is sleeved on the outside of the second vertical sleeve 2132 to form an annular cavity with the second vertical sleeve 2132. The overflow hole 21331 is located in the annular cavity so that vertical overflow can be further achieved through the third vertical sleeve 2134, thereby further improving the filtering effect. Specifically, a plurality of saw teeth 21341 are provided on the top circumferential edge of the third vertical sleeve 2134, and the particulate matter in the aquaculture sewage is blocked and filtered again by the saw teeth 21341. At the same time, the water flow rate can be further slowed down, so that the clearer water in the upper layer of the aquaculture sewage flows into the next-level filter chamber 220 for filtration.

[0067] It can be understood that in order to prevent the aquaculture sewage from backflowing into the second vertical sleeve 2132, the second vertical sleeve 2132 is higher than the height of the third vertical sleeve 2134, so that the water flow higher than the third vertical sleeve 2134 flows outward through the third vertical sleeve 2134 and can flow to the next-level treatment unit through the aquaculture water outlet 212; the height of the aquaculture water outlet 212 is lower than the height of the third vertical sleeve 2134, and the aquaculture sewage is gathered in the cavity formed by the horizontal partition 2133 outside the third vertical sleeve 2134 and the vertical flow separation chamber 210, and is discharged out of the vertical flow separation chamber 210 when the liquid level rises to the aquaculture water outlet 212.

[0068] Furthermore, in order to slow down the water velocity of aquaculture wastewater, the aquaculture water outlet 212 is a long strip hole, so that the wastewater in the top water outlet chamber 214 can flow out slowly without causing excessive disturbance to the water body and particulate matter at the bottom of the top water outlet chamber 214. The clearer liquid at the upper layer of the top water outlet chamber 214 is preferentially discharged into the next-level filter chamber 220, further improving the filtering effect of the vertical separation chamber.

[0069] In another embodiment, the filtering device 221 comprises:

[0070] The liquid inlet nozzle assembly 2211 has one end connected to the aquaculture water outlet 212 and the other end connected to the filter chamber 220;

[0071] The filter assembly 2212 is located inside the filter chamber 220 and is tilted from top to bottom away from the vertical flow separation chamber 210;

[0072] The filter chamber 220 includes a filter residue collection chamber 2201 and an aquaculture water collection chamber 2202. The filter residue collection chamber 2201 is located at the tail end of the extension direction of the filter component 2212, and the filter residue collection chamber 2201 is connected to the collection and fermentation chamber 230; the aquaculture water collection chamber 2202 is located below the filter component 2212 and is used to collect filtered aquaculture water.

[0073] In order to match the structure of the aquaculture water outlet 212, a liquid inlet nozzle assembly 2211 is provided in the filter device 221. The liquid inlet nozzle assembly 2211 is a closed shell having a set of relatively arranged flat mouth structures; specifically, a rectangular shell, and the opposite side walls of the rectangular shell are provided with flat mouth structures, and the width of the flat mouth structure can be set to 3-15 cm, which can be set as needed. The liquid inlet nozzle assembly 2211 is arranged obliquely downward, so that the incoming aquaculture sewage can flow to the filter assembly 2212 for filtration under the action of gravity.

[0074] The filter component 2212 is located inside the filter chamber 220, tilted downward, and extends away from the vertical flow separation chamber 210. The filter component 2212 can be a filter screen, and the mesh number of the filter screen can be 80-120 meshes, preferably 100 or 120 meshes, to maximize the filtering effect. According to the position of the filter screen, the filter chamber 220 is divided into a filter residue collection chamber 2201 and an aquaculture water collection chamber 2202, wherein the filter residue collection chamber 2201 is located at the tail end of the extension direction of the filter component 2212, collects liquid organic matter containing aquaculture sewage and organic substances such as fish feces that slide down from the filter component 2212, and transports it to the collection and fermentation chamber 230 for collection and fermentation; in order to better collect particulate matter such as fish feces, the filter residue collection chamber 2201 is set to be funnel-shaped, and is inclined from both sides to the middle in the width direction of the filter screen to concentrate particulate matter such as fish feces in the middle of the funnel for easy discharge, and a pipeline connected to the collection and fermentation chamber 230 is arranged at the bottom of the filter residue collection chamber 2201, and a stop valve is arranged on the pipeline to control the on-off of the pipeline.

[0075] The aquaculture water collection chamber 2202 is located below the filter assembly 2212, and collects the filtered aquaculture water and discharges it into the next level processing unit, which can also be achieved by setting a drainage pipeline; the area of ​​the aquaculture water collection chamber 2202 is equal to the positive projection area of ​​the filter assembly 2212 in the horizontal plane, so that the aquaculture sewage filtered by the filter assembly 2212 can be collected in time. Therefore, according to the structure of the filter net, the particles such as fish feces and the filtered aquaculture sewage are collected in the corresponding areas, the device structure is simplified, the internal space structure of the filter chamber 220 is optimized, and the space utilization rate is improved.

[0076] In an optional embodiment, the filter assembly 2212 further includes a high-pressure cleaning assembly 2213, a flushing pump 22131, a high-pressure flushing pipeline 22132 and a high-pressure flushing nozzle 22133 connected in sequence, the high-pressure flushing nozzle 22133 is located below the filter assembly 2212, and is used to flush the filter assembly 2212 from bottom to top; the high-pressure flushing pipeline 22132 is arranged obliquely along the extension direction of the filter assembly 2212, and is arranged in a plurality of rows, and each row of high-pressure flushing pipelines 22132 is respectively provided with a plurality of high-pressure flushing nozzles 22133, which are used to flush the filter net from bottom to top, so that the filter residues such as fish feces on the filter net will not adhere or clog the filter net, and maintain the good filtering performance of the filter net. The flushing water of the high-pressure flushing nozzle 22133 is tap water.

[0077] In order to prevent splashing during high-pressure flushing of the filter screen, a folding side cover 2203 is provided on the side wall of the filter chamber 220, so that the folding side cover 2203 can be closed during high-pressure cleaning to prevent splashing; at the same time, the folding side cover 2203 can be opened to observe the liquid level of the filter residue collection chamber 2201, and the filter screen can be disassembled and cleaned in time, thereby improving convenience.

[0078] In this embodiment, the collecting and fermenting chamber 230 includes a collecting chamber 231 and a fermentation chamber 232 which are arranged in sequence from top to bottom; the collecting chamber 231 is respectively connected to the residue collecting chamber 2201 and the vertical flow separation chamber 210, and a collecting chamber inclined plate 2311 extending along the length direction of the collecting chamber 231 is provided in the collecting chamber 231, and a collecting chamber residue discharge pipeline 2312 is provided on one side of the collecting chamber 231, close to the bottom of the collecting chamber inclined plate 2311, and the collecting chamber residue discharge pipeline 2312 is connected to the fermentation chamber 232.

[0079] It can be understood that the bottom wall of the vertical flow separation chamber 210 is provided with a collecting funnel 216, and the bottom of the collecting funnel 216 is connected to the collecting chamber 231 through a pipeline, and a stop valve is provided on the pipeline to control the on-off of the pipeline; the collecting chamber 231 collects the fish feces and other particles in the vertical flow separation chamber 210 and the filter residue collection chamber 2201 respectively, and precipitates them in the collecting chamber 231; at the same time, the collecting chamber inclined plate 2311 extends along the length direction of the collecting chamber 231 and is inclined, so that the particles can flow along the collecting chamber 231. The collecting chamber inclined plate 2311 gathers to its bottom. In the collecting chamber 231, a collecting chamber filter residue discharge pipeline 2312 is provided at the bottom of the collecting chamber inclined plate 2311 to discharge the precipitated fish feces and other particulate matter into the fermentation chamber 232; a collecting chamber overflow port 2313 is provided at the top of the collecting chamber 231. When the water level of the aquaculture sewage in the collecting chamber 231 rises to the top, the water above the collecting chamber 231 is discharged to the next-level treatment unit through the collecting chamber overflow port 2313.

[0080] In another embodiment, a sewage pump 2321, a sewage self-circulating pipeline 2322 and a return pipeline 2323 are provided in the fermentation chamber 232; one end of the sewage pump 2321 is connected to the bottom end of the inner cavity of the fermentation chamber 232, and the other end is respectively connected to the sewage self-circulating pipeline 2322 and the return pipeline 2323, and the other end of the sewage self-circulating pipeline 2322 is located in the fermentation chamber 232 for oxygen supply; the other end of the return pipeline 2323 is connected to the top water outlet cavity 214.

[0081] It can be understood that one end of the sewage pump 2321 is connected to the bottom of the inner cavity of the fermentation chamber 232 so as to extract the aquaculture sewage at the bottom of the fermentation chamber 232 and supply it to the sewage self-circulation pipeline 2322 and the return pipeline 2323. In order to increase the oxygen content in the fermentation chamber 232, a sewage self-circulation pipeline 2322 is set in the fermentation chamber 232, one end of which is connected to the sewage pump 2321 and the other end is located in the fermentation chamber 232. The sewage pump 2321 pumps the sewage in the fermentation chamber 232 into the sewage self-circulation pipeline 2322, so that the sewage circulates in the fermentation chamber 232, and increases the contact area with the air during the circulation process, so as to increase the dissolved oxygen in the water, which is convenient for aerobic fermentation of particles such as fish feces.

[0082] For the fermented aquaculture sewage, the direction is changed by the reversing valve of the sewage pump 2321, and the sewage self-circulation pipeline 2322 and the return pipeline 2323 are switched to pump the fermented aquaculture sewage back to the top water outlet chamber 214 of the vertical flow separation chamber 210, and continue the top overflow and filtering process of the filter device 221, and treat it again to improve the treatment effect of aquaculture sewage and particulate matter such as fish feces, and fully treat particulate matter such as fish feces, so that large particles are transformed into small particles through vertical falling and fermentation of the filtering device 221, and the organic matter therein is fully decomposed and discharged into the plant planting bed along with the aquaculture sewage to provide the required nutrients for plant growth.

[0083] In order to further increase the oxygen content of the aquaculture sewage in the fermentation chamber 232, a fermentation chamber inclined plate 2324 is also provided in the fermentation chamber 232. The fermentation chamber inclined plate 2324 extends along the length direction of the fermentation chamber 232. The liquid inlet end of the sewage pump 2321 is located at the bottom of the fermentation chamber inclined plate 2324 to continue to lift the aquaculture sewage containing particulate matter and fermented to the top water outlet chamber 214 to continue to treat the particulate matter; on the other side, the discharge end of the sewage self-circulation pipeline 2322 is located at the top of the fermentation chamber inclined plate 2324. At the same time, the spray pipe of the sewage self-circulation pipeline 2322 extends along the width direction of the fermentation chamber inclined plate 2324, and a number of nozzles are arranged on the spray pipe to further increase the contact area between the aquaculture sewage sprayed from the sewage self-circulation pipeline 2322 and the air, thereby increasing the oxygen content in the aquaculture sewage.

[0084] At the same time, the fermentation chamber inclined plate 2324 allows the aquaculture wastewater to converge from top to bottom, and the particulate matter in the aquaculture wastewater can be gathered at the bottom of the fermentation chamber 232, making it easier for the sewage pump 2321 to extract the aquaculture wastewater containing most of the particulate matter, and further perform secondary treatment on the particulate matter, thereby improving the treatment effect of the particulate matter.

[0085] It can be understood that a heating component 2325 is provided in the fermentation chamber 232 to adjust the fermentation temperature in the fermentation chamber 232. Preferably, an interlayer is provided in the side wall of the fermentation chamber 232 in the length direction, and the heating component 2325 is arranged in the interlayer to improve the safety of the heating component 2325. The heating component 2325 can be set to an S-shaped or a meander-shaped heating resistance wire, and by heating the side wall of the fermentation chamber 232, the aquaculture sewage in the fermentation chamber 232 can be evenly heated to achieve uniform heating.

[0086] On the basis of the above embodiments, the vertical flow separation chamber 210, the filter chamber 220 and the collection and fermentation chamber 230 are an integrated device; the top of the collection and fermentation chamber 230 is provided with an observation port 2301 for observing the aquaculture water level;.

[0087] The vertical flow separation chamber 210, the filter chamber 220, the collection and fermentation chamber 230 and the control device are integrated into one body, so that it can be used as a separate fish manure treatment equipment 200 and can be mass-produced; compared with the split structure, it occupies a small space, has a compact structure, does not require additional pipes and other connectors, simplifies the device structure, and reduces the device cost. Specifically, an installation cavity 2302 for installing a control device and a pumping device is provided on the side of the collection and fermentation chamber 230. The installation cavity 2302 runs through the width direction of the fish manure treatment equipment 200, and the control device is integrated at the front end of the installation cavity 2302. A pumping device is arranged inside the installation cavity 2302. The pumping device specifically includes a sewage pump 2321 and a flushing pump 22131, so as to further optimize the internal space structure of the equipment, improve space utilization, and improve system safety.

[0088] The specific operation process of the fish manure treatment equipment 200 is as follows: the aquaculture sewage in the aquaculture barrel enters into the first vertical sleeve 2131 through the aquaculture water inlet 211, and spreads upward from bottom to top until the aquaculture sewage rises to the top opening of the first vertical sleeve 2131, and then flows out under the action of gravity, flows from top to bottom along the horizontal interval between the first vertical sleeve 2131 and the second vertical sleeve 2132, and decelerates; since the bottom of the second vertical sleeve 2132 is an open structure and is connected to the vertical flow separation chamber 210, the aquaculture sewage flowing through the bottom of the second vertical sleeve 2132 continues to flow to the bottom of the vertical flow separation chamber 210, and the water flow speed slows down; the aquaculture sewage accumulates at the bottom of the vertical flow separation chamber 210, and as the accumulation proceeds, the water level in the vertical flow separation chamber 210 rises, and when the water level rises to above When the horizontal dividing piece is in the position, the aquaculture sewage enters into the top water outlet chamber 214 through the overflow hole 21331 on the horizontal dividing piece 2133, and is located between the lateral intervals of the third vertical sleeve 2134 and the second vertical sleeve 2132. At this time, the water level continues to rise. When the water level is higher than the top edge of the third vertical sleeve 2134, the aquaculture sewage spreads to the top water outlet chamber 214 outside the third vertical sleeve 2134, and the particles in the aquaculture sewage are filtered through the saw teeth 21341 of the third vertical sleeve 2134, so that the clearer upper layer of water is discharged into the top water outlet chamber 214. At this time, the water level in the top water outlet chamber 214 rises, and the water flow speed is further slowed down; when the water level in the top water outlet chamber 214 rises to the aquaculture water outlet 212, it is discharged into the filter chamber 220 through the aquaculture outlet.

[0089] Aquaculture sewage enters the filter chamber 220 through a liquid inlet nozzle assembly 2211 with a flat mouth structure, is filtered through a filter assembly 2212, and is collected by an aquaculture water collection chamber 2202 located below the filter assembly 2212. The collected aquaculture sewage enters the next-level treatment unit through a pipeline; the liquid organic matter with particles such as fish feces obtained after filtration slides from top to bottom to the filter residue collection chamber 2201 for collection, and when the liquid level in the filter residue collection chamber 2201 reaches a preset height, it is discharged into the collection and fermentation chamber 230 for collection and fermentation.

[0090] The collecting chamber 231 collects and precipitates the aquaculture wastewater containing particles such as fish feces after being filtered by the filtering chamber 220. The aquaculture wastewater moves through the collecting chamber inclined plate 2311, and the particles such as fish feces accumulate at the bottom of the collecting chamber inclined plate 2311. When the liquid level in the collecting chamber 231 reaches a preset height, it is discharged to the next-level treatment unit through the collecting chamber overflow port 2313 at the top of the collecting chamber 231. By opening the collecting chamber filter residue discharge pipeline 2312, the particles such as fish feces in the collecting chamber 231 are discharged into the fermentation chamber 232 along with the aquaculture wastewater for fermentation.

[0091] The aquaculture sewage entering the fermentation chamber 232 also flows obliquely from top to bottom through the fermentation chamber inclined plate 2324, and gathers fish feces and other particles at the bottom of the fermentation chamber inclined plate 2324. The fermentation temperature of the fermentation chamber 232 is adjusted by the heating component 2325 to meet the temperature required for the fermentation of particles. At the same time, the sewage self-circulation is performed at a preset frequency through the sewage pump 2321 and the sewage self-circulation pipeline 2322 to provide oxygen for the fermentation of particles; at the same time, after a certain period of fermentation, the control return pipeline 2323 and the sewage pump 2321 are started to lift the fermented aquaculture sewage back to the top water outlet chamber 214 for collection, and then enter the filter chamber 220, the collection chamber 231 and the fermentation chamber 232 for treatment; it can be lifted 3-5 times in the fermentation step. When the entire fermentation process is completed, the filter residue and other particle residues are discharged through the sewage outlet at the bottom of the fermentation chamber 232 to complete the treatment of the aquaculture sewage and particles.

[0092] The above device can decompose fish feces and particulate matter, so that the nutrients of fish feces and other particulate matter can be decomposed into small particles that can be used by plants. Nitrogen compounds are produced during the decomposition of fish feces. After a series of microbial transformations, ammonia nitrogen will gradually be converted into nitrates, providing an important nitrogen source for plant absorption and utilization. At the same time, the phosphorus contained in fish feces will form phosphates during the fermentation process. The fermentation process will breed a rich microbial community, including bacteria, fungi, etc., which play a key role in material transformation and ecological balance; the humus formed at the same time, as an organic substance, can improve the soil structure, increase the soil's water and fertilizer retention capacity, provide necessary nutrients for plant growth, and promote the sustainable operation of the fish-vegetable symbiotic system. The ammonia nitrogen and phosphorus elements in the aquaculture sewage are converted into nitrates and phosphates that can be absorbed by plants. At the same time, the dissolved oxygen in the aquaculture water increases, and the fish can grow healthily. The treated water body is then used for the plants in the plant cultivation and purification system 4000. The above system makes full use of the ammonia nitrogen and phosphorus elements contained in the aquaculture water, so there is no need to apply the required fertilizers to the plants regularly and quantitatively, and there is no need to invest a lot of labor costs, which reduces the investment cost of hydroponic plant cultivation. Through filtration and fermentation, aquaculture wastewater can be decomposed and released nutrients, which makes it easier for plants in the subsequent ecological planting beds to absorb and utilize the treated nutrients, so as to fully provide the nutrients needed by the plants, reduce or eliminate the need to add additional nutrient reagents, and enable the fish-vegetable symbiotic system to achieve self-sufficiency of nutrients for aquatic organisms and plants, thereby realizing a closed-loop aquaculture water circulation in the fish-vegetable symbiotic system.

[0093] Embodiment 2

[0094] like Figure 4 As shown, Figure 4A schematic structural diagram of a protein separation device 300 and a nitrification device 400 provided in an embodiment of the present application; in this embodiment, a water inlet 340 and a water outlet 350 are respectively provided at the bottom of the protein separation device 300, and a foam reflux port 360 is respectively provided at the top; the water inlet 340 of the protein separation device 300 is connected to the filter chamber for conveying primary tail water into the protein separation device 300; the water outlet 350 of the protein separation device 300 is connected to the nitrification device 400 for conveying secondary tail water after protein separation to the nitrification device 400; the foam reflux port 360 of the protein separation device 300 is connected to the collecting and fermentation chamber for conveying organic matter after protein separation to the collecting and fermentation chamber for fermentation.

[0095] A water inlet 340 is provided at the bottom of the protein separation equipment 300, and the water inlet 340 is connected to the aquaculture water collection chamber 2202 of the filter chamber 220 through a pipeline, and is used to collect the primary tail water after vertical flow separation, filtration and fermentation by the fish manure treatment equipment 200. The primary tail water enters the protein separation equipment 300 from the water inlet 340 at the bottom under the action of gravitational potential energy for protein separation. The foam generated by the egg separation gathers upward in the protein separation equipment 300, and flows back to the collection and fermentation chamber from the foam reflux port 360 at the top for fermentation and filtration again. It can be understood that after the protein in the primary tail water is separated, it is easier to be fermented into nutrients that are beneficial for the cultivated plants to absorb, so that the nutrients in the particulate matter are fully utilized, thereby eliminating the need to add fertilizers to the plants, saving a lot of labor costs, and reducing the economic cost of purchasing fertilizers and the investment cost of hydroponic plant cultivation.

[0096] Among them, the height of the water outlet 350 of the protein separation equipment 300 is lower than the height of the water inlet 340 , and the height of the water inlet of the nitrification equipment 400 is lower than the height of the aquaculture water collection chamber 2202 .

[0097] In another embodiment, the protein separation device 300 further includes an overflow liquid inlet 380 and an aeration inlet 390. The overflow liquid inlet 380 is connected to the collection and fermentation chamber, specifically to the collection chamber, through a pipeline to collect the aquaculture water flowing out of the top of the collection chamber and perform protein separation on it. The aeration inlet 390 is used to supply air into the protein separation device 300 to assist the protein separation operation, and air or oxygen can be filled into the aeration pipeline.

[0098] In this embodiment, the protein separation device 300 includes a protein separation barrel 310, a diverter plate 320 and a foam collection barrel 330. The diverter plate 320 is located inside the protein separation barrel 310 to divert the primary tail water so that it can fully contact with the gas to achieve protein separation; the foam collection barrel 330 is located at the top of the protein separation barrel 310 and is used to collect the foam after the protein separation. Among them, the protein separation barrel 310 can be set as a circular barrel body, which has a hollow gas-liquid mixing chamber and a water outlet 350 connected to the gas-liquid mixing chamber. It can be understood that in order for the pipeline to connect the water inlet 340 of the protein separation device 300 with the fish manure treatment device 200, the bottom barrel wall of the protein separation barrel 310 is correspondingly provided with an avoidance port to achieve pipeline connection. At the same time, a foam collection chamber with a gradually decreasing diameter from bottom to top is provided at the top of the protein separation barrel 310, so that the foam after the protein separation can be gathered upward and enter the foam collection barrel 330 from the top of the protein separation barrel 310; the foam collection chamber is a truncated cone structure, and an opening structure is provided at the top to achieve communication with the foam collection barrel 330. A through hole is provided at the center of the bottom wall of the foam collection barrel 330, and the through hole is sleeved on the outer wall of the foam collection chamber, and the top opening structure of the foam collection chamber is higher than the bottom wall of the foam collection barrel 330, so that the foam and the water after the foam dissipates can be collected in the foam collection chamber, and then transported back to the collection and fermentation chamber through the foam discharge pipe, and fermented and filtered again, so as to further improve the fermentation effect and the degree of particle decomposition.

[0099] Furthermore, a flushing port 370 is provided on the top of the foam collection barrel 330 for flushing the foam, and the flushing port 370 is connected to the flushing pump 22131 of the fish manure treatment equipment 200 through a pipeline to unify the pumping equipment and simplify the device structure.

[0100] The diverter plate 320 is located at the bottom of the gas-liquid mixing chamber of the protein separation barrel 310. The diverter plate 320 is a hollow cavity, and a diverter is provided on the top wall. Each diverter is arranged in a ring or matrix on the diverter plate 320. Its specific structure can be set with reference to the prior art and will not be repeated here. The diverter plate 320 and the bottom wall of the protein separation barrel 310 form a closed cavity. The water inlet 340 of the protein separation equipment 300 is arranged on the diverter plate 320, that is, after the primary tail water passes through the water inlet 340 and the diverter plate 320, it flows into the gas-liquid mixing chamber from bottom to top for protein separation. The diverter plate 320 is used to divert the primary tail water and transport it to the gas-liquid mixing chamber.

[0101] The protein separation device 300 performs protein separation on the primary tail water of the fish manure treatment device 200, and transports the secondary tail water after protein separation to the nitrification device 400 for nitrification.

[0102] The nitrification equipment 400 nitrifies the organic matter in the secondary tail water after protein treatment to obtain tertiary tail water; the water inlet of the nitrification equipment 400 is connected to the water outlet 350 of the protein separation equipment 300 through a pipeline, and the height of the water outlet of the nitrification equipment 400 is lower than the height of the water inlet of the nitrification equipment 400, so as to facilitate the height difference flow of the water body; the water outlet of the nitrification equipment 400 is connected to the aquaculture water storage tank 3010, and the nitrified tertiary tail water is discharged into the aquaculture water storage tank 3010. The nitrification equipment 400 is used to convert the ammonia nitrogen in the secondary tail water into nitrates that can be absorbed by plants, thereby removing the ammonia nitrogen in the aquaculture sewage of the fish aquaculture system 1000 and increasing the dissolved oxygen in the aquaculture water. At the same time, the organic matter treated by the fish manure treatment equipment 200 and the protein separation equipment 300 is changed from large-particle organic matter to small-particle organic matter, which reduces the pressure of nitrifying bacteria, is conducive to the reproduction of nitrifying bacteria and the maintenance of their activity, thereby ensuring a high nitrification efficiency.

[0103] The nitrification equipment 400 is provided with nitrification balls inside to realize the nitrification of the secondary tail water. The nitrification equipment 400 is a mature existing equipment, and its specific structure can be set according to needs, which will not be described in detail here.

[0104] The aquaculture water and nutrient solution storage system 3000 of this embodiment is described in detail below.

[0105] The aquaculture water and nutrient solution storage system 3000 includes an aquaculture water storage tank 3010 and a nutrient solution storage tank 3040 which are connected in sequence. The aquaculture water storage tank 3010 is used to collect the tertiary tail water after nitrification by the nitrification equipment 400. After the tertiary tail water is precipitated in the aquaculture water storage tank 3010 and the nutrient solution storage tank 3040, it can be transported to the plant cultivation purification system 4000 respectively.

[0106] The aquaculture water storage tank 3010 is connected to the outlet of the nitrification equipment 400, and is used to collect tertiary tail water after nitrification. When the nutrients in the aquaculture water are sufficient for the cultivated plants on the soilless cultivation rack 100, the aquaculture water in the aquaculture water storage tank 3010 is transported to the soilless cultivation rack 100 through the pipeline setting, so as to realize the independent nutrient supply of the aquaculture water to the cultivated plants; after purification of the cultivated plants on the soilless cultivation rack 100, the fourth tail water is obtained, and the purified fourth tail water is transported back to the fish farming system 1000 to form a circulation of aquaculture water in the system.

[0107] Alternatively, when the nutrients in the aquaculture water cannot meet the needs of the growth of the cultivated plants on the soilless cultivation rack 100, the nutrients can be supplemented by adding nutrient solution to the aquaculture water. The aquaculture water flows into the nutrient solution storage tank 3040 through the aquaculture water storage tank 3010, and nutrient solution is added to the nutrient solution storage tank 3040 as needed. The aquaculture water containing the nutrient solution in the nutrient solution storage tank 3040 is transported to the soilless cultivation rack 100 through a pipeline to provide mixed nutrients to the cultivated plants. The cultivated plants are purified by the soilless cultivation rack 100. , four tail waters are obtained, and the purified four tail waters are transported back to the nutrient solution storage tank 3040 or the fish farming system 1000. It can be understood that when the nutrient solution concentration is higher than the acceptable concentration for the survival of aquatic organisms, the purified four tail waters are sent back to the nutrient solution storage tank 3040 and do not participate in the circulation process of the fish farming system 1000; when the nutrient solution concentration is lower than or equal to the acceptable concentration for the survival of aquatic organisms, the purified four tail waters can be sent back to the fish farming system 1000 to participate in the water circulation process of the entire fish-vegetable symbiotic system.

[0108] like Figure 5-7 As shown, Figure 5 A schematic diagram of the structure of the aquaculture water and nutrient solution storage system 3000 provided in an embodiment of the present application; Figure 6 A schematic diagram of the pipeline connection of the aquaculture water and nutrient solution storage system 3000 provided in the first embodiment of the present application; Figure 7 This is a schematic diagram of the pipeline connections of the aquaculture water and nutrient solution storage system 3000 provided in the second embodiment of the present application.

[0109] In a specific embodiment, the aquaculture water and nutrient solution storage system 3000 includes an aquaculture water storage tank 3010, an aquaculture water inlet device and an aquaculture water return device; one end of the aquaculture water inlet device and the aquaculture water return device are connected to the plant cultivation and purification system 4000, the other end of the aquaculture water inlet device is connected to the aquaculture water storage tank 3010, and the other end of the aquaculture water return device is connected to the aquaculture tank 1001; the aquaculture water storage tank 3010 is used to collect tertiary tail water after nitrification by the nitrification equipment 400, and the tertiary tail water is transported to the plant cultivation and purification system 4000 after sedimentation in the aquaculture water storage tank 3010.

[0110] It is further explained that a breeding water pump is provided in the breeding water storage tank 3010, and the breeding water pump is connected to the breeding water inlet device for providing power; one end of the breeding water inlet device is connected to the breeding water storage tank 3010, and the other end is connected to the plant cultivation and purification system 4000, for providing breeding water to the cultivated plants in the plant cultivation and purification system 4000; the cultivated plants in the soilless cultivation rack 100 absorb nutrients from the breeding water and purify the breeding water to obtain four tail waters, which are transported to the breeding tank 1001 through the breeding water return device to realize the circulation of breeding water in the system.

[0111] In an optional embodiment, the aquaculture water inlet device includes a plurality of aquaculture water inlet pipes 3020, which correspond one-to-one to the soilless cultivation rack 100 of the plant cultivation and purification system 4000, and one end of the aquaculture water inlet pipe 3020 is connected to the aquaculture water storage tank 3010, and the other end is connected to the soilless cultivation rack 100; the aquaculture water return device includes a plurality of aquaculture water return pipes 3030, which correspond one-to-one to the soilless cultivation rack 100, and one end of the aquaculture water return pipe 3030 is connected to the aquaculture tank 1001.

[0112] That is, each group of soilless cultivation racks 100 is connected to a breeding water inlet pipeline 3020 and a breeding water outlet pipeline; the breeding water inlet pipeline 3020 is used to control the delivery of breeding water to the soilless cultivation rack 100, and the breeding water outlet pipeline is used to control the return of the four tail water purified by the soilless cultivation rack 100; it provides breeding water to each group of soilless cultivation racks 100 according to their needs, and can accurately manage each group of soilless cultivation racks 100. The breeding water inlet pipeline 3020 and the breeding water return pipeline 3030 are respectively provided with control valves to control the on and off of the pipelines, improve the degree of automation, and realize intelligent control of the system.

[0113] In another embodiment, the aquaculture water and nutrient solution storage system also includes a nutrient solution storage tank 3040, a nutrient solution inlet device and a nutrient solution return device. The aquaculture water storage tank 3010 and the nutrient solution storage tank 3040 are connected in sequence for conveying aquaculture water to the nutrient solution storage tank 3040. A nutrient solution pump is provided in the nutrient solution storage tank 3040, and a connecting pipeline is provided between the aquaculture water storage tank 3010 and the nutrient solution storage tank 3040. A tank inversion valve is provided on the connecting pipeline for conveying the aquaculture water in the aquaculture water storage tank 3010 to the nutrient solution storage tank 3040. The flow power of the aquaculture water comes from the height difference, thereby reducing the power source setting and reducing the device cost.

[0114] One end of the nutrient solution inlet device and the nutrient solution return device are connected to the soilless cultivation rack 100, the other end of the nutrient solution inlet device is connected to the nutrient solution storage tank 3040, and the other end of the nutrient solution return device is connected to the breeding tank 1001 or the nutrient solution storage tank 3040; after the tertiary tail water purified by the breeding water purification and conversion system 2000 enters the soilless cultivation rack 100 through the nutrient solution inlet device, it is purified by the cultivated plants cultivated in the soilless cultivation rack 100 to obtain the fourth tail water, and the nutrient solution return device transports the purified fourth tail water to the breeding tank 1001 or the nutrient solution storage tank 3040.

[0115] It is understandable that the nutrient solution can be selectively returned to the nutrient solution storage tank 3040 or the culture tank 1001, so that when the nutrient solution concentration is higher than the acceptable concentration for the survival of aquatic organisms, the purified four-stage tail water is sent back to the nutrient solution storage tank 3040 and does not participate in the circulation process of the fish culture system 1000, thereby preventing excessive nutrients or salts from being enriched and causing harm to aquatic organisms. The above structural setting can control the nutrient solution circulation separately, making the system more flexible, meeting the use of different systems, and improving the applicability of the system.

[0116] Specifically, the nutrient solution inlet device includes a plurality of nutrient solution inlet pipelines 3050, each of which corresponds one-to-one to the soilless cultivation rack 100, one end of the nutrient solution inlet pipeline 3050 is connected to the nutrient solution storage tank 3040, and the other end is connected to the soilless cultivation rack 100; the nutrient solution return device includes a plurality of nutrient solution return pipelines 3060, each of which corresponds one-to-one to the soilless cultivation rack 100, one end of the nutrient solution return pipeline 3060 is connected to the soilless cultivation rack 100, and the other end is connected to the breeding tank 1001 or the nutrient solution storage tank 3040.

[0117] The nutrient solution return position is determined based on the comparison between the nutrient solution concentration and the acceptable concentration for the survival of aquatic organisms. When the nutrient solution concentration is higher than the acceptable concentration for the survival of aquatic organisms, the nutrient solution return pipeline 3060 is connected to the nutrient solution storage tank 3040, and the purified four-time tail water is sent back to the nutrient solution storage tank 3040 and does not participate in the circulation process of the fish farming system 1000; when the nutrient solution concentration is lower than or equal to the acceptable concentration for the survival of aquatic organisms, the nutrient solution return pipeline 3060 is connected to the breeding tank 1001, and the purified four-time tail water can be returned to the fish farming system 1000, so that it participates in the water circulation process of the entire fish-vegetable symbiotic system; when the cultivated plants in the system are added with nutrient solution, the system can still adapt without the need for additional pipelines or equipment, thereby improving the versatility of the system.

[0118] It can be understood that the nutrient solution inlet pipeline 3050 and the nutrient solution return pipeline 3060 correspond one-to-one to the soilless cultivation rack 100, so that nutrient solution or breeding water can be supplied to each group of soilless cultivation racks 100, and each group of soilless cultivation racks 100 can be accurately supplemented with nutrients to meet the nutrients required for the cultivated plants of each group of soilless cultivation racks 100, and the cultivated plants of each group can be controlled in a directional manner to improve the planting effect.

[0119] At the same time, the nutrient solution inlet pipeline 3050 and the nutrient solution return pipeline 3060 are respectively provided with control valves to control the on-off of the pipelines, thereby improving the degree of automation and realizing intelligent control of the system.

[0120] Furthermore, in order to further improve the safety and intelligence of the system, the nutrient solution inlet pipeline 3050 and the aquaculture water inlet pipeline 3020 are connected in parallel and connected to the soilless cultivation rack 100, and the nutrient solution inlet pipeline 3050 and the aquaculture water inlet pipeline 3020 are interlocked; the nutrient solution return pipeline 3060 and the aquaculture water return pipeline 3030 are connected in parallel and connected to the soilless cultivation rack 100, and the nutrient solution return pipeline 3060 and the aquaculture water return pipeline 3030 are interlocked.

[0121] In a group of soilless culture racks 100 in the above embodiment, the nutrient solution inlet pipeline 3050 and the aquaculture water inlet pipeline 3020 are interlocked, and correspondingly, the nutrient solution return pipeline 3060 and the aquaculture water return pipeline 3030 are interlocked; that is, when the nutrient solution inlet pipeline 3050 and the nutrient solution return pipeline 3060 are opened, the aquaculture water inlet pipeline 3020 and the aquaculture water return pipeline 3030 are closed, and the nutrient solution is supplied to the soilless culture racks 100 of the corresponding group; when When the aquaculture water inlet pipeline 3020 and the aquaculture water return pipeline 3030 are opened, the nutrient solution inlet pipeline 3050 and the nutrient solution return pipeline 3060 are closed. At this time, aquaculture water is supplied to the corresponding group of soilless cultivation racks 100 to supply nutrients to the soilless cultivation racks 100 as needed. Different groups of soilless cultivation racks 100 can be independently controlled according to different cultivated plants, and nutrients can be supplied separately, thereby optimizing the plant nutrient supply method and improving the plant planting effect.

[0122] The specific interlocking method is implemented by a control valve, such as an electromagnetic reversing valve, etc. As long as the same technical effect can be achieved, the specific implementation method is not limited.

[0123] Specifically, the aquaculture water inlet device includes an aquaculture water inlet main pipe and a number of aquaculture water inlet pipes 3020. The aquaculture water inlet main pipe is connected to the aquaculture water storage tank 3010. One end of each aquaculture water inlet pipe 3020 is connected to the aquaculture water inlet main pipe, and the other end is connected to the soilless cultivation rack 100; the aquaculture water return device includes an aquaculture water return main pipe and a number of aquaculture water return pipes 3030. One end of each aquaculture water return pipe 3030 is connected to the soilless cultivation rack 100, and the other end is connected to the aquaculture water return main pipe. The aquaculture water return main pipe is connected to the aquaculture tank 1001, and an ultraviolet disinfection device is provided on the aquaculture water return main pipe.

[0124] On the other hand, the nutrient solution inlet device includes a nutrient solution inlet main pipe and a plurality of nutrient solution inlet pipelines 3050. The nutrient solution inlet main pipe is connected to the nutrient solution storage tank 3040. One end of each nutrient solution inlet pipeline 3050 is respectively connected to the nutrient solution inlet main pipe, and the other end is respectively connected to the soilless cultivation rack 100. The nutrient solution inlet pipeline 3050 and the aquaculture water inlet pipeline 3020 can be connected in parallel and share part of the pipeline, such as by respectively setting a reversing valve on the nutrient solution inlet pipeline 3050 and the aquaculture water inlet pipeline 3020 to achieve interlocking; thereby saving the amount of pipeline laying, reducing system costs, and facilitating control. The nutrient solution return device includes a nutrient solution return main pipe and a plurality of nutrient solution return pipes 3060. One end of each nutrient solution return pipe 3060 is respectively connected to the soilless culture rack 100, and the other end is connected to the nutrient solution return main pipe. Accordingly, the nutrient solution return pipe 3060 and the aquaculture water return pipe 3030 can be set as a structure. The nutrient solution or aquaculture water can be returned to the corresponding main pipe by reversing the valves of the nutrient solution return main pipe and the aquaculture water return main pipe. The reversing valve can be used to achieve interlocking. The end of the nutrient solution return main pipe connected to the aquaculture tank 1001 is provided with a nutrient solution return control valve, and the end of the nutrient solution return main pipe connected to the nutrient solution storage tank 3040 is provided with a nutrient solution return control valve. In this way, while simplifying the system structure, the precise control of the supply of nutrient solution and aquaculture water in different groups of soilless culture racks 100 can be achieved.

[0125] In another embodiment, the aquaculture water and nutrient solution storage system 3000 also includes an aquaculture water return pipeline 3070, one end of which is connected to the aquaculture water storage tank 3010, and the other end is connected to the aquaculture tank 1001, and is used to transport the tertiary tail water after sedimentation back to the aquaculture tank 1001, forming an independent factory system. The factory system includes a fish aquaculture system 1000, an aquaculture water purification and conversion system 2000, and an aquaculture water and nutrient solution storage system 3000, which are sequentially connected to form a circulation loop. The nutrients in the water body are decomposed and utilized through the aquaculture water purification and conversion system 2000, and the treated aquaculture water is transported back to the aquaculture tank 1001. The garbage generated during the treatment process can be discharged through the aquaculture water storage tank 3010, thereby achieving purification of the aquaculture water and being able to provide it to the aquaculture tank 1001 again, realizing factory circulation, reducing the amount of water required for the system, and reducing system costs.

[0126] The plant cultivation and purification system 4000 of this embodiment is described in detail below.

[0127] See also Figure 15-20 , Fig.15 A schematic diagram of the structure of a soilless cultivation rack provided in an embodiment of the present application; Fig.16 A schematic diagram of the structure of a soilless cultivation device provided in an embodiment of the present application; Fig.17A schematic diagram of the installation structure of the nutrient solution conducting member provided in the embodiment of the present application; Fig.18 for Fig.16 A schematic diagram of a top view structure; Fig.19 A schematic diagram of the structure of the partition provided in the embodiment of the present application; Fig. 20 This is a schematic diagram of the lateral structure of the soilless cultivation device provided in an embodiment of the present application.

[0128] In a specific embodiment, the present application also provides a soilless cultivation rack 100, including a cultivation rack 120 and a plurality of soilless cultivation devices 110 of any of the above items, the cultivation rack 120 is provided with an installation position, the soilless cultivation device 110 corresponds to the installation position one by one, and is detachably fixedly connected.

[0129] Among them, the cultivation rack 120 is set to be A-shaped or H-shaped. Taking the A-shaped cultivation rack 120 as an example, several installation positions are vertically arranged on the left and right sides of the A-shaped bracket. The A-shaped structure enables each vertical soilless cultivation device 110 to be fully exposed to sunlight, providing a better environment for plant growth; specifically, the soilless cultivation device 110 corresponds to the installation position one by one.

[0130] The soilless cultivation device 110 includes a trough body 11, a partition 12 and a nutrient solution conductor 13; the soilless cultivation device 110 is preferably set as a soilless cultivation trough, preferably the top opening of the trough body 11 is set to facilitate the cutting and placement of plants, and the trough body 11 has an inner cavity for the flow of nutrient solution and the storage of plants; the trough body 11 is preferably set as a rectangular cavity or a trapezoidal cavity, which can be set as needed. The partition 12 is located in the inner cavity of the trough body 11, and the inner cavity is divided into a planting cavity 111 and a nutrient solution cavity 112 from top to bottom vertically. The planting cavity 111 provides a planting space and a matrix storage space for plants, and the nutrient solution cavity 112 is used for the nutrient solution to flow under the partition 12; it can be understood that when the soilless cultivation device 110 only provides nutrition through the nutrient solution, it is hydroponic planting; when the matrix is ​​stored in the planting cavity 111, the nutrient solution and the matrix can be used to provide nutrition to the plant respectively, so as to realize dual cultivation, and at this time the planting cavity 111 can be used as a storage cavity for the matrix. Optionally, the partition 12 can be configured as a rectangular plate, which is detachably fixedly connected to the tank body 11 for easy disassembly and assembly, such as by overlapping or clamping. A plurality of partitions 12 can be configured, each of which is longitudinally arranged in the tank body 11, thereby further facilitating disassembly and assembly and production and processing.

[0131] On the other hand, one end of the nutrient solution conducting member 13 is located in the nutrient solution cavity 112, and the other end is laid on the partition 12, and is used to conduct the nutrient solution in the nutrient solution cavity 112 to the planting cavity 111 to provide nutrition for the plants; the nutrient solution conducting member 13 is preferably configured as a sponge, non-woven cotton or other liquid conducting materials, and can be configured according to the development of the prior art. The nutrient solution conducting member 13 conducts the nutrient solution from a low position to a high position, and provides the plants with a stable nutrient solution, making the nutrient solution concentration more stable, and at the same time, the humidity of the plant root system is more stable.

[0132] At the same time, when the substrate is stored in the planting cavity 111 for dual cultivation, the partition 12 is set to prevent the substrate from falling into the nutrient solution. The partition 12 separates the substrate and the nutrient solution. The substrate will not contaminate the nutrient solution or cause blockage of the nutrient solution in the trough body 11. The nutrient solution can be directly recovered later without filtering or other auxiliary operations, thereby improving the recovery efficiency of the nutrient solution.

[0133] In this embodiment, in order to realize the installation of the nutrient solution conducting member 13, the partition 12 is provided with a first installation positioning hole 121 and a second installation positioning hole 122 opposite to each other in the transverse direction. The first installation positioning hole 121 and the second installation positioning hole 122 extend longitudinally along the partition 12, and the extension length can be set according to the length of the partition 12 and the length of the planting area; the longitudinal ends of the first installation positioning hole 121 or the second installation positioning hole 122 are 3-8 cm away from the longitudinal edge of the partition 12, preferably 5 cm.

[0134] At the same time, the first installation positioning hole 121 and the second installation positioning hole 122 respectively penetrate the wall thickness of the partition 12 in the vertical direction, and the two lateral ends of the nutrient solution conducting member 13 respectively pass through the first installation positioning hole 121 and the second installation positioning hole 122, and extend into the nutrient solution cavity 112; the installation of the nutrient solution conducting member 13 and the partition 12 is achieved by plug-in, the first installation positioning hole 121 and the second installation positioning hole 122 are respectively set as strip holes, and the two lateral ends of the nutrient solution conducting member 13 respectively pass through the first installation positioning hole 121 and the second installation positioning hole 122, and the nutrient solution conducting member 13 protruding from the bottom of the partition 12 is in contact with the nutrient solution, and can conduct the nutrient solution from bottom to top to the top of the partition 12, so as to provide nutrition for the plants in the planting cavity 111. It can be understood that the top of the nutrient solution conducting member 13 is preferably in contact with the upper surface of the partition 12, so that the nutrient solution conducting member 13 can be evenly laid on the partition 12, so that the plants are in uniform contact with the nutrient solution conducting member 13.

[0135] Specifically, the nutrient solution conductor 13 includes a conduction part 131 and a supply part 132; the conduction part 131 is located below the partition 12 and is used to contact the nutrient solution; the supply part 132 is located above the partition 12 and between the first mounting positioning hole 121 and the second mounting positioning hole 122 to provide nutrition for the plants in the planting cavity 111; the supply part 132 is in contact with the upper surface of the partition 12.

[0136] In this embodiment, the nutrient solution conducting member 13 is non-woven cotton, which has good water transfer effect and low cost.

[0137] On the basis of the above-mentioned embodiments, support bosses 113 are respectively provided on the opposite lateral side walls of the trough body 11, and the partition 12 is located on the support bosses 113; the support bosses 113 extend inwardly in the lateral direction, and the lower surface of the partition 12 is located on the upper surface of the support bosses 113 to achieve overlap; in other embodiments, the support bosses 113 may also be located on the opposite longitudinal side walls of the trough body 11, especially when the longitudinal length of the trough body 11 is moderate, such as 1-1.5m in length, the support bosses 113 may be set as needed, all of which are within the protection scope of the present application.

[0138] In addition, the trough body 11 is a U-shaped structure with an opening at the top, and the lateral width of the trough body 11 decreases from top to bottom, so that the substrate can be easily put into the planting cavity 111, so that the top of the trough body 11 has a larger operating space.

[0139] Optionally, the planting cavity 111 is filled with a matrix for supporting plants; the matrix is ​​one or more of sponge, peat soil, peaty soil, ceramsite, and pebbles. As described above, a matrix is ​​set in the planting cavity 111, and the matrix can be an organic matrix or an inorganic matrix. When the matrix is ​​an inorganic matrix, it plays a role of supporting the plant in the planting cavity 111; when the matrix is ​​an organic matrix, it cooperates with the nutrient solution to achieve dual cultivation, which can better provide nutrition to the plant and supplement the nutrients lacking in the hydroponic monoculture method.

[0140] In another embodiment, a liquid inlet and a liquid discharge port are respectively provided at two longitudinal ends of the tank body 11, which are connected to the liquid inlet pipeline and the liquid discharge pipeline respectively.

[0141] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0142] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A fish-vegetable symbiotic system, characterized in that: It includes a fish breeding system, a breeding water purification and conversion system, a breeding water and nutrient solution storage system and a plant cultivation purification system which are sequentially connected to form a circulation loop; The fish breeding system comprises a breeding tank, wherein the breeding tank contains breeding water required for breeding aquatic organisms, and the breeding tank is connected to the breeding water purification and conversion system to discharge breeding wastewater to the breeding water purification and conversion system; The aquaculture water purification and conversion system comprises a fish manure treatment device, a protein separation device and a nitrification device connected in sequence, wherein the fish manure treatment device is used to perform vertical flow separation, filtration and fermentation on the aquaculture wastewater to obtain primary tail water rich in organic matter; The protein separation device performs protein separation on the organic matter in the treated primary tail water to obtain secondary tail water; the nitrification device performs nitrification on the organic matter in the protein treated secondary tail water to obtain tertiary tail water; The aquaculture water and nutrient solution storage system comprises an aquaculture water storage tank, an aquaculture water inlet device and an aquaculture water return device; one end of the aquaculture water inlet device and the aquaculture water return device are connected to the plant cultivation purification system, the other end of the aquaculture water inlet device is connected to the aquaculture water storage tank, and the other end of the aquaculture water return device is connected to the aquaculture tank; the aquaculture water storage tank is used to collect tertiary tail water after nitrification by the nitrification equipment, and the tertiary tail water is transported to the plant cultivation purification system after sedimentation in the aquaculture water storage tank; The plant cultivation and purification system includes a soilless cultivation rack for cultivating plants. After the tertiary tail water purified by the aquaculture water purification and conversion system enters the soilless cultivation rack, it is purified by using the cultivated plants cultivated in the soilless cultivation rack to obtain quadruple tail water. The aquaculture water return device transports the purified quadruple tail water to the aquaculture tank.

2. The fish-vegetable symbiotic system according to claim 1, characterized in that: The fish excrement processing equipment comprises: A vertical flow separation chamber, wherein the inner cavity has a vertical flow separation device, the vertical flow separation device is connected to the aquaculture water inlet of the vertical flow separation chamber; the vertical flow separation chamber has an aquaculture water outlet; A filter chamber, wherein the filter chamber and the vertical flow separation chamber are arranged in sequence, and the filter chamber is connected to the aquaculture water outlet; the filter chamber is provided with a filter device for separating particulate matter and clean water in the aquaculture water; The collecting and fermenting chamber is located below the filtering chamber and communicated with the filtering chamber, and is used for collecting and fermenting the filtered particulate matter.

3. The fish-vegetable symbiotic system according to claim 2, characterized in that: The protein separation device is provided with a water inlet and a water outlet at the bottom and a foam reflux port at the top; The water inlet of the protein separation device is in communication with the filter chamber for conveying primary tail water into the protein separation device; The water outlet of the protein separation device is connected to the nitrification device, so as to transport the secondary tail water after protein separation to the nitrification device; The foam reflux port of the protein separation device is communicated with the collection and fermentation chamber to transport the organic matter after protein separation to the collection and fermentation chamber for fermentation.

4. The fish-vegetable symbiotic system according to claim 3, characterized in that: The protein separation equipment comprises: A protein separation barrel, comprising a hollow gas-liquid mixing chamber and a water outlet communicated with the gas-liquid mixing chamber; A diverter plate is located at the bottom of the protein separation barrel and is provided with a water inlet of the protein separation device, and the diverter plate is used to divert the primary tail water and transport it to the gas-liquid mixing chamber; The foam collecting barrel is located at the top of the protein separation barrel and is used for collecting the foam in the protein separation barrel; the foam collecting barrel is provided with the foam reflux port located at the bottom and the flushing port located at the top.

5. The fish-vegetable symbiotic system according to claim 4, characterized in that: The diverter plate is provided with an overflow liquid inlet and / or an air filling inlet; The overflow liquid inlet is connected to the collection and fermentation chamber via a pipeline, and is used to collect the aquaculture water overflowing from the collection and fermentation chamber; The gas inlet is used to supply gas into the diverter plate.

6. The fish-vegetable symbiotic system according to claim 1, characterized in that: The aquaculture water and nutrient solution storage system further comprises a nutrient solution storage tank, a nutrient solution inlet device and a nutrient solution return device, wherein the aquaculture water storage tank is sequentially connected to the nutrient solution storage tank and is used to transport aquaculture water into the nutrient solution storage tank; One end of the nutrient solution inlet device and the nutrient solution return device are respectively connected to the soilless cultivation rack, the other end of the nutrient solution inlet device is connected to the nutrient solution storage tank, and the other end of the nutrient solution return device is connected to the breeding tank or the nutrient solution storage tank; after the tertiary tail water purified by the breeding water purification and conversion system enters the soilless cultivation rack through the nutrient solution inlet device, it is purified by the cultivated plants cultivated in the soilless cultivation rack to obtain quadruple tail water, and the nutrient solution return device transports the purified quadruple tail water to the breeding tank or the nutrient solution storage tank.

7. The fish-vegetable symbiotic system according to claim 6, characterized in that: The aquaculture water inlet device includes a plurality of aquaculture water inlet pipelines, each of which corresponds to the soilless cultivation rack one by one, one end of each aquaculture water inlet pipeline is connected to the aquaculture water storage tank, and the other end is connected to the soilless cultivation rack; The aquaculture water return device comprises a plurality of aquaculture water return pipelines, the aquaculture water return pipelines correspond to the soilless cultivation racks one by one, and one end of the aquaculture water return pipeline is connected to the aquaculture tank.

8. The fish-vegetable symbiotic system according to claim 7, characterized in that: The nutrient solution inlet device includes a plurality of nutrient solution inlet pipelines, each of which corresponds to the soilless cultivation rack one by one, one end of each nutrient solution inlet pipeline is connected to the nutrient solution storage tank, and the other end of each nutrient solution inlet pipeline is connected to the soilless cultivation rack; The nutrient solution return pipeline includes a plurality of nutrient solution return pipelines, each of which corresponds to the soilless cultivation rack one by one. One end of the nutrient solution return pipeline is connected to the soilless cultivation rack, and the other end is connected to the breeding tank or the nutrient solution storage tank.

9. The fish-vegetable symbiotic system according to claim 8, characterized in that: The nutrient solution inlet pipeline and the aquaculture water inlet pipeline are connected in parallel and communicated with the soilless culture rack, and the nutrient solution inlet pipeline and the aquaculture water inlet pipeline are interlocked; The nutrient solution return pipeline and the aquaculture water return pipeline are connected in parallel and communicated with the soilless cultivation rack, and the nutrient solution return pipeline and the aquaculture water return pipeline are interlocked.

10. The fish-vegetable symbiosis system according to claim 1, characterized in that: The aquaculture water and nutrient solution storage system also includes: Aquaculture water return pipeline, one end of which is connected to the aquaculture water storage tank, and the other end of which is connected to the aquaculture tank, is used to transport the tertiary tail water after sedimentation back to the aquaculture tank.

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