Multi-stage pond coupled ecological circulating culture method and device

Abstract

The invention discloses a multi-stage pond coupled ecological cycle culture method and device, and relates to the field of aquaculture, the device comprises at least one A-type pond, at least one B-type pond, at least one C-type pond and a conveying system; the terrains of the A-type pool, the B-type pool and the C-type pool are sequentially reduced, and a water channel A is arranged on the side, close to the B-type pool, of the A-type pool; according to the multi-stage pond coupled ecological circulating culture method and device, through the coupling design of the multi-stage ponds, cyclic utilization of culture tail water and sharing of biological bait are achieved, the utilization efficiency of pond resources is improved, and the A-type pond serves as the starting point of the whole circulating culture system, not only is the culture task of main economic fishes undertaken, but also the culture cost is reduced. According to the method, the pond A is used as a culture pond, biological bait is provided for the pond B, the pond B utilizes tail water of the pond A for culture, the eutrophication risk of a water body is reduced, the pond C serves as a purification core, and continuous purification of water is achieved by planting aquatic plants and polyculturing aquatic organisms.

Description

Technical Field

[0001] The invention relates to aquaculture technology, and in particular to an ecological circulation aquaculture method and device coupled with multiple ponds. Background Art

[0002] At present, the aquaculture industry faces many challenges, such as insufficient resource utilization, difficult water quality management, and high environmental pollution risks. Although most aquaculture companies have a certain number of ponds, these ponds are often used in isolation, and each pond usually only performs a single breeding function, such as breeding a certain type of fish or performing simple tailwater purification. This traditional breeding model has low resource utilization efficiency and is prone to problems such as water quality deterioration and disease transmission, which seriously affects the sustainable development of aquaculture.

[0003] Specifically, in the traditional breeding model, there is a lack of effective connection and interaction between the ponds, resulting in the ineffective recycling of aquaculture tail water and nutrients. For example, Pond A is only used to breed sea bass, and Pond B is only used to breed yellow catfish. Pond A and Pond B have separate water inlet and outlet and perform single breeding functions. There is no complementarity and synergy between the two. In addition, even if the existing model attempts to divide the functions of ponds, it simply uses a pond as a water storage tank or tail water purification tank, lacking a systematic and efficient recycling breeding plan. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-stage pond coupled ecological circulation aquaculture method and device to solve the problem that in the aquaculture model in the prior art, there is a lack of effective connection and interaction between the ponds, resulting in the inability to effectively recycle aquaculture tail water and nutrients.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: an ecological circulation breeding device coupled with multiple ponds, comprising: at least one A-type pond, at least one B-type pond, at least one C-type pond and a conveying system;

[0006] The terrain of the A-type pool, B-type pool and C-type pool decreases in sequence. A channel is set on the side of the A-type pool close to the B-type pool. The end of the A channel away from the B-type pool is connected to the B-type pool. The B-type pool receives the tail water in the A-type pool through the A channel.

[0007] A B channel is arranged on the side of the B pool close to the C pool, and the end of the B channel away from the B pool is connected to the C pool. The C pool receives the tail water in the B pool through the B channel, and the C pool is used to purify the tail water in the B pool.

[0008] The delivery system is used to deliver purified water from the Class C pool to the Class A pool.

[0009] Furthermore, the transportation system includes a water tower, a water pump, a water pipe A and a water pipe B. The water pump is used to extract water from the Class C pool. The water pump is installed in the Class C pool. The water pump is far away from the connection between the B water channel and the Class C pool. One end of the A water pipe is connected to the output end of the water pump, and the other end of the A water pipe is connected to the interior of the water tower. One end of the B water pipe is connected to the water tower, and the other end of the B water pipe is connected to the interior of the Class A pool.

[0010] Furthermore, a plurality of biological brushes and aquatic plant floating beds are arranged in channel B and between channel B and the water pump.

[0011] Furthermore, aerators are provided in the Class A pool, the Class B pool and the Class C pool.

[0012] A multi-stage pond coupled ecological cycle aquaculture method, using the multi-stage pond coupled ecological cycle aquaculture device as described above, comprises the following steps:

[0013] S1. In the highest-lying Class A ponds, aquatic animals are cultured using intensive artificial feeding methods;

[0014] S2. The tailwater of the Class A pond is introduced into the Class B pond through the A channel, and aquatic organisms that can filter and feed on biological bait and organic debris (residual bait) in the tailwater are cultured in the Class B pond;

[0015] S3. Lead the tailwater in the B-type pond into the C-type pond through the B channel, plant aquatic plants that can absorb eutrophic substances in the water body in the C-type pond, and cultivate aquatic organisms that can filter microorganisms, debris and detritus in the water body in the C-type pond;

[0016] S4. Install multiple biological brushes and aquatic plant floating beds in channel B and between channel B and the water pump;

[0017] S5. Use a water pump to pump the water in the Class C pool into the water tower to ensure the stability of the water levels in the Class A pool, Class B pool, and Class C pool, and return the water in the water tower to the Class A pool through the B water pipe, forming a multi-stage pond coupled ecological circulation aquaculture system.

[0018] Furthermore, the economical aquatic organisms in step S1 are preferably one or more carnivorous species with high economic value, such as seabass, forage mandarin fish, snakehead fish, and catfish.

[0019] Furthermore, the aquatic organisms in step S2 are one or more species with filter-feeding and saprophytic ecological functions, such as whiteleg shrimp, swamp shrimp, and fry of famous and high-quality species.

[0020] Furthermore, the aquatic plants in step S3 are emergent plants and vegetables, the emergent plants are planted in the coastal zone of the Class C pond, an aquatic plant floating bed is arranged in the Class C pond, and the vegetables are cultivated on the aquatic plant floating bed.

[0021] Furthermore, the aquatic organisms in step S3 are economical aquatic species such as silver carp, bighead carp, freshwater shrimp and shellfish.

[0022] Furthermore, aquatic organisms that can feed on aquatic plants and shellfish are also cultured in Class C ponds.

[0023] Compared with the prior art, the present invention provides a multi-stage pond coupled ecological circulation aquaculture method and device. Through the coupling design of the multi-stage ponds, the recycling of aquaculture tail water and the sharing of biological bait are realized, and the utilization efficiency of pond resources is improved. The A-type pond, as the starting point of the entire circulation aquaculture system, not only undertakes the task of aquaculture of major economic fish, but also provides biological bait for the B-type pond. The B-type pond utilizes the tail water of the A-type pond for aquaculture, while reducing the risk of eutrophication of the water body. The C-type pond, as the purification core, realizes continuous purification of water quality by planting aquatic plants and polyculturing aquatic organisms.

[0024] The multi-level pond coupled ecological cycle farming model designed not only improves the resource utilization efficiency and the stability of the water quality of the aquaculture water, but also further improves the comprehensive economic benefits of the farm by diversifying the breeding and increasing the economic benefits. This innovative farming model provides strong support for the transformation, upgrading and sustainable development of the aquaculture industry.

[0025] By achieving the recycling of aquaculture tail water and continuous purification of water quality, the risk of environmental pollution is greatly reduced, avoiding the problems of water quality deterioration and environmental pollution that are often easily caused in traditional aquaculture models. In addition, the coupled design of multi-stage ponds also enables the effective utilization and transformation of waste and nutrients in the aquaculture process, reducing waste emissions and negative impacts on the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0027] Figure 1 A schematic diagram of the overall structure of a layout of a class A pool, a class B pool, and a class C pool provided in an embodiment of the present invention;

[0028] Figure 2 A first top view schematic diagram of the structure provided by an embodiment of the present invention;

[0029] Figure 3 A first cross-sectional structural schematic diagram provided for an embodiment of the present invention;

[0030] Figure 4A schematic diagram of the overall structure of another layout of the Class A pool, Class B pool and Class C pool provided in an embodiment of the present invention;

[0031] Figure 5 A second top view schematic diagram of the structure provided by an embodiment of the present invention;

[0032] Figure 6 A second cross-sectional structural schematic diagram provided for an embodiment of the present invention.

[0033] Description of reference numerals:

[0034] 1. Class A pool; 2. Class B pool; 3. Class C pool; 4. Transportation system; 41. Water tower; 42. Water pump; 43. Water pipe A; 44. Water pipe B; 5. Water channel A; 6. Water channel B; 7. Aerator. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] Embodiment 1:

[0037] See also Figure 1 and Figure 4 , a multi-stage pond coupled ecological circulation aquaculture device, comprising: at least one A-type pool 1, at least one B-type pool 2, at least one C-type pool 3 and a conveying system 4;

[0038] The terrain of the A-type pool 1, the B-type pool 2 and the C-type pool 3 decreases in sequence. A water channel 5 is arranged on the side of the A-type pool 1 close to the B-type pool 2. The end of the A water channel 5 away from the B-type pool 2 is connected to the B-type pool 2. The B-type pool 2 receives the tail water in the A-type pool 1 through the A water channel 5.

[0039] A B water channel 6 is arranged on one side of the B pool 2 close to the C pool 3. One end of the B water channel 6 away from the B pool 2 is connected to the C pool 3. The C pool 3 receives the tail water in the B pool 2 through the B water channel 6. The C pool 3 is used to purify the tail water in the B pool 2 received by it.

[0040] The conveying system 4 is used to convey the purified water in the C-type pool 3 to the A-type pool 1 .

[0041] At present, most aquaculture enterprises have a certain number of ponds, and the use of ponds is isolated. For example, pond A is only used to culture sea bass, and pond B is only used to culture yellow catfish. Ponds A and B have separate water inlet and outlet, and perform single breeding functions without mutual interference. Even if there is a functional division, it is only to give a pond a single water storage function, or a simple tailwater purification function to achieve standard discharge. Few truly form an efficient circulation model;

[0042] To this end, the present application sets the terrain of Class A pool 1, Class B pool 2 and Class C pool 3 to be lowered in sequence, so that the tail water of Class A pool 1 can flow into Class B pool 2, and the tail water of Class B pool 2 can flow into Class C pool 3, and the purified water in Class C pool 3 is transported to Class A pool 1 through the set conveying system 4, forming a circulating aquaculture system.

[0043] See also Figure 2 and Figure 5 In one embodiment of the present invention, the conveying system 4 includes a water tower 41, a water pump 42, an A water pipe 43 and a B water pipe 44. The water pump 42 is used to extract water from the C class pool 3. The water pump 42 is installed in the C class pool 3. The water pump 42 is far away from the connection between the B water channel 6 and the C class pool 3. One end of the A water pipe 43 is connected to the output end of the water pump 42, and the other end of the A water pipe 43 is connected to the inside of the water tower 41. One end of the B water pipe 44 is connected to the water tower 41, and the other end of the B water pipe 44 is connected to the inside of the A class pool 1. The height position of the water tower 41 can be specifically set according to the specific position settings of the A class pool 1, the B class pool 2 and the C class pool 3. The height and capacity of the water tower 41 can be specifically set according to the water level stability requirements of the A class pool 1, the B class pool 2 and the C class pool 3.

[0044] The water in the C-type pool 3 is pumped into the water tower 41 through the water pump 42 and the A water pipe 43. Under the action of the height difference, the water in the water tower 41 flows into the A-type pool 1 through the B water pipe 44. Under the action of the A water channel 5 and the B water channel 6, the water in the A-type pool 1, the B-type pool 2 and the C-type pool 3 circulates to ensure the stability of the water levels in the A-type pool 1, the B-type pool 2 and the C-type pool 3.

[0045] In one embodiment of the present invention, a plurality of biological brushes and aquatic plant floating beds are arranged in the B channel 6 and between the B channel 6 and the water pump 42, which can effectively remove suspended matter, organic pollutants and nutrients such as nitrogen and phosphorus in the tail water, further purify the water quality, and provide better quality aquaculture water for the entire aquaculture system;

[0046] Among them, the biological brushes are evenly arranged along the two side walls and the bottom of the B channel 6, and the arrangement direction is perpendicular to the water flow direction. The specific number is set according to the length and width of the B channel 6, and an aquatic plant floating bed is arranged in the open area between the B channel 6 and the water pump 42. Aquatic plants such as canna, water bamboo, cattail, foxtail algae, reed, mushroom grass, water lily, etc. can be planted on the aquatic plant floating bed to remove organic pollutants and nutrients such as nitrogen and phosphorus in the tail water. The open area can be divided into several small blocks, and a certain number of floating beds are arranged in each small block according to the size of the aquatic plant floating bed (such as 2-4 square meters). The aquatic plant floating bed can also be set in a ring shape and arranged around the water pump 42, so that the water pumped by the water pump 42 is purified by the plants planted on the aquatic plant floating bed, and a biological brush ring belt is set around the water pump 42. The biological brushes can be closely arranged around the water pump 42 through a bracket or a mounting plate, and ensure that the biological brushes have a certain angle with the water flow direction to better intercept and remove impurities in the water.

[0047] See also Figure 1 , Figure 2 , Figure 4 and Figure 5 In one embodiment of the present invention, aerators 7 are provided in Class A pool 1, Class B pool 2 and Class C pool 3. The number of aerators 7 is set at 1 unit / 2.5 mu, which can effectively increase the dissolved oxygen content in the water body, promote the respiration and metabolic activities of aquatic organisms, and is beneficial to the stability of water quality and the growth of farmed organisms. The number of aerators 7 is set at 1 unit / 2.5 mu, which not only ensures sufficient oxygen supply but also avoids excessive investment.

[0048] Among them, Class A Pond 1: As the starting point of the entire recirculating aquaculture system, Class A Pond 1 not only undertakes the task of aquaculture of major economic fish, but also provides biological bait for Class B Pond 2;

[0049] Class B pool 2: Class B pool 2 is the receiving pool for the tailwater of Class A pool 1. The culture species selected must be able to filter the biological bait and organic debris (residual bait) in the tailwater, such as white shrimp and swamp shrimp, which can not only effectively utilize resources but also reduce the risk of eutrophication of water bodies. At the same time, Class B pool 2 can also be used as a breeding pool for fry and juveniles of famous and high-quality species to achieve diversification of culture objects.

[0050] Class C pool 3: Class C pool 3 is the purification core of the entire system. It forms a multi-level and multi-path water purification system by planting emergent plants, submerged plants and vegetables, and co-culturing large silver carp, bighead carp, shrimp and shellfish. Aquatic plants not only absorb nutrients such as nitrogen and phosphorus, but also increase economic benefits; while aquatic animals filter microorganisms, debris and decaying debris to further purify the water.

[0051] See also Figures 1 to 3In one embodiment of the present invention, the A-type pool 1, the B-type pool 2 and the C-type pool 3 adopt the following layout: the A-type pool 1 is arranged around the periphery, the B-type pool 2 is arranged inside, and the C-type pool 3 is arranged in the middle. The water tower 41 stands in the center of the C-type pool 3, and the water pump 42 is far away from the B water channel 6 to prevent the tail water from being pumped to the water tower 41 by the water pump 42 because it cannot be processed in time. There are biological floating beds and biological brush rings around the water pump 42. There are certain emergent plants, floating plants and submerged plants around the C-type pool 3. An impeller aerator is installed in the C-type pool 3, and a waterwheel aerator is installed diagonally to stir the water body and form a directional water flow, which is beneficial to water purification.

[0052] See also Figures 4 to 6 In one embodiment of the present invention, Class A pool 1, Class B pool 2 and Class C pool 3 adopt another layout as follows: Class A pool 1, Class B pool 2 and Class C pool 3 are arranged in a stepped manner, with two Class A pools 1, a Class B pool 2 is arranged on one side of the Class A pool 1, and a Class C pool 3 is arranged on the side of the Class B pool 2 away from the Class A pool 1. The water pump 42 is away from the B channel 6 to prevent the tail water from being pumped to the water tower 41 by the water pump 42 due to lack of time for treatment. There are biological floating beds and biological brush rings around the water pump 42, and aerators 7 are installed in the Class A pool 1, the Class B pool 2 and the Class C pool 3.

[0053] Embodiment 2:

[0054] Under the call of relevant policies on "green development of fisheries" and "promoting quality and efficiency improvement of the aquatic industry", and under the existing limited resource conditions, there is an urgent need to further tap into the production capacity of enterprises and develop "new quality productivity" for the development of the aquatic industry to solve the problem that "most current aquaculture enterprises have a certain number of ponds, and the use of ponds is isolated. For example, Pond A is only used to breed sea bass, and Pond B is only used to breed yellow catfish. Ponds A and B have separate water intake and discharge and perform single breeding functions without mutual interference. Even if there is a functional division, it is only to give a pond a single water storage function, or a simple tailwater purification function to achieve standard discharge. Few truly form an efficient circulation model."

[0055] To do this, see Figures 1 to 6 The present application proposes a multi-stage pond coupled ecological cycle aquaculture method, using the multi-stage pond coupled ecological cycle aquaculture device as described above, comprising the following steps:

[0056] S1. In the highest-lying Class A pond 1, aquatic animals are cultured by artificial feeding. The aquatic animals are preferably one or more carnivorous species with high economic value, such as sea bass, mandarin fish, snakehead, and catfish. Artificial feeding is used to rapidly increase the fertility of the water body, producing abundant plankton and organic debris. The aquatic animals cultured in Class A pond 1 are mainly economic fish, and Class A pond 1 can provide biological bait for the cultured species in Class B pond 2. Class A pond 1 can play a dual function and is responsible for the main benefit output of the breeding area, with a planned benefit ratio of about 60%;

[0057] S2. The tailwater of the A-type pond 1 is introduced into the B-type pond 2 through the A-channel 5. Aquatic organisms that can filter the biological bait and organic debris in the tailwater are cultured in the B-type pond 2. The B-type pond 2 mainly culture economic shrimps (such as white shrimp and swamp shrimp) or cultivate famous and excellent varieties of fry and other juveniles (such as shrimp seedlings or crabs) to filter the rich biological bait or organic debris discharged from the tailwater of the A-type pond 1. The B-type pond 2 also has the function of reducing the eutrophication of the tailwater of the A-type pond 1, realizing the diversification of breeding objects and reducing the risk of market impact on corporate benefits. It is an important source of benefits, and the planned benefit accounts for about 30%;

[0058] S3, the tail water in the B-type pool 2 is introduced into the C-type pool 3 through the B channel 6, and aquatic plants that can absorb eutrophic substances in the water body are planted in the C-type pool 3. The aquatic plants are emergent plants and vegetables. The emergent plants are planted in the coastal zone of the C-type pool 3, such as lotus root, cattail, etc., and submerged plants are such as duckweed and Vallisneria. Aquatic plant floating beds are arranged in the C-type pool 3, and vegetables are cultivated on the aquatic plant floating beds, such as water hyacinth, water celery, water spinach, etc. The emergent plants and vegetables absorb eutrophic substances such as nitrogen and phosphorus in the water, which increases economic benefits. The area accounts for about 40% of the area of ​​the C-type pool 3, and the planned benefit of the C-type pool 3 accounts for about 10%;

[0059] In the Class C pond 3, aquatic organisms capable of filtering microorganisms, debris and decayed debris in the water body are cultured. The aquatic organisms are silver carp and bighead carp, shrimp and shellfish. The silver carp and bighead carp are selected to be large silver carp and bighead carp. The large silver carp and bighead carp are large in size and do not need to be fed. They have high quality and economic value and play an ecological role in filtering plankton in the water body and purifying the water body. The large silver carp and bighead carp are stocked with a specification of 1 kg / tail, and 30-50 tails are mixed and stocked per mu;

[0060] The shellfish cultured in Class C pond 3 can filter microorganisms and debris in the water, and the snails can scrape the debris. Shellfish can be selected for stocking with clams, with the stocking specifications of 120-200 pieces / 500 grams of seedlings and 200-250 kilograms per mu, and the stocking specifications of snails are 60-100 pieces / jin, 20-30 kilograms per mu.

[0061] The shrimps cultured in Class C pond 3 have the habit of filtering plankton bait in the water body, eating detritus and rotten detritus, and have strong adaptability. They can usually form self-propagating groups, have low breeding costs, high economic value, and can help purify the water body. The stocking capacity is 1,000-3,000 per mu;

[0062] Aquatic organisms that can feed on aquatic plants and shellfish are also cultured in Class C pond 3. River crabs (60-80 pieces / catties, 2,000 pieces per mu) are cultured to feed on a certain amount of detritus, aquatic plants, shellfish and snails to control the excessive growth and reproduction of aquatic plants, shellfish and snails, and further improve economic benefits;

[0063] S4, a plurality of biological brushes and aquatic plant floating beds are arranged in the B channel 6 and between the B channel 6 and the water pump 42;

[0064] S5. Pump the water in the C-type pool 3 into the water tower 41 through the water pump 42 to ensure the stability of the water levels in the A-type pool 1, the B-type pool 2 and the C-type pool 3, and return the water in the water tower 41 to the A-type pool 1 through the B water pipe 44, forming a multi-stage pond coupled ecological circulation aquaculture system.

[0065] Through the coupling design of multi-level ponds, the recycling of aquaculture tail water and the sharing of biological bait are realized, and the utilization efficiency of pond resources is improved. Class A pond 1, as the starting point of the entire recirculating aquaculture system, not only undertakes the task of aquaculture of major economic fish, but also provides biological bait for Class B pond 2. Class B pond 2 uses the tail water of Class A pond 1 for aquaculture, while reducing the risk of eutrophication of water bodies. Class C pond 3, as the purification core, realizes continuous purification of water quality by planting aquatic plants and polyculture of aquatic organisms;

[0066] Through the above-mentioned multi-level pond coupled ecological circulation breeding method, the current situation of single pond breeding function and "each doing its own thing" of existing enterprises has been broken, the enterprise ponds have been integrated, the advantages of pond groups have been brought into play, and the new concept of "multifunctional coupling technology of pond breeding" has been proposed. It guides aquaculture enterprises to combine economic and ecological benefit goals, rationally plan the breeding varieties of each pond, and at the same time give functional positioning to the pond group, interconnect the original independent ponds, realize functional coupling, form a "1+1>2" effect, and at the same time establish a green and efficient large-scale aquaculture model based on the entire pond group.

[0067] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0068] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0070] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0071] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0072] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ecological circulation breeding device coupled with multiple ponds, characterized in that: include: At least one type A pool (1), at least one type B pool (2), at least one type C pool (3) and a delivery system (4); The terrain of the A-type pool (1), the B-type pool (2) and the C-type pool (3) decreases in sequence. A water channel (5) is arranged on the side of the A-type pool (1) close to the B-type pool (2). The end of the A water channel (5) away from the B-type pool (2) is connected to the B-type pool (2). The B-type pool (2) receives the tail water in the A-type pool (1) through the A water channel (5). A B water channel (6) is arranged on one side of the B pool (2) close to the C pool (3); an end of the B water channel (6) away from the B pool (2) is connected to the C pool (3); the C pool (3) receives tail water in the B pool (2) through the B water channel (6); and the C pool (3) is used to purify the tail water in the B pool (2) received by it; The conveying system (4) is used to convey the purified water in the C-type pool (3) to the A-type pool (1).

2. The multi-stage pond coupled ecological circulation aquaculture device according to claim 1, characterized in that: The conveying system (4) comprises a water tower (41), a water pump (42), an A water pipe (43) and a B water pipe (44). The water pump (42) is used to extract water from the C-type pool (3). The water pump (42) is installed in the C-type pool (3). The water pump (42) is far away from the connection between the B water channel (6) and the C-type pool (3). One end of the A water pipe (43) is connected to the output end of the water pump (42), and the other end of the A water pipe (43) is connected to the inside of the water tower (41). One end of the B water pipe (44) is connected to the water tower (41), and the other end of the B water pipe (44) is connected to the inside of the A-type pool (1).

3. The multi-stage pond coupled ecological circulation aquaculture device according to claim 2, characterized in that: A plurality of biological brushes and aquatic plant floating beds are arranged in the B water channel (6) and between the B water channel (6) and the water pump (42).

4. The multi-stage pond coupled ecological circulation aquaculture device according to claim 1, characterized in that: Aerators (7) are provided in the A-type pool (1), the B-type pool (2) and the C-type pool (3).

5. A multi-stage pond coupled ecological cycle aquaculture method, characterized in that: The multi-stage pond coupled ecological circulation aquaculture device according to any one of claims 1 to 4 comprises the following steps: S1. In the highest-lying Class A pond (1), aquatic animals are cultured using artificial feeding and intensive culture; S2, introducing the tail water of the A-type pond (1) into the B-type pond (2) through the A-type water channel (5), and cultivating aquatic organisms in the B-type pond (2) that can filter and feed on biological bait and organic debris in the tail water; S3, introducing the tail water in the B-type pond (2) into the C-type pond (3) through the B-type water channel (6), planting aquatic plants that can absorb eutrophic substances in the water body in the C-type pond (3), and cultivating aquatic organisms that can filter microorganisms, debris and decayed debris in the water body in the C-type pond (3); S4, arranging a plurality of biological brushes and aquatic plant floating beds in the B channel (6) and between the B channel (6) and the water pump (42); S5. The water in the C-type pool (3) is pumped into the water tower (41) through the water pump (42) to ensure that the water levels in the A-type pool (1), the B-type pool (2) and the C-type pool (3) are stable, and the water in the water tower (41) is returned to the A-type pool (1) through the B water pipe (44), thereby forming a multi-stage pond-coupled ecological circulation aquaculture system.

6. The multi-stage pond coupled ecological cycle aquaculture method according to claim 5, characterized in that: The aquatic organisms in step S1 are one or more of seabass, mandarin fish, snakehead fish, and catfish.

7. The multi-stage pond coupled ecological cycle aquaculture method according to claim 5, characterized in that: The aquatic organisms in step S2 are one or more of white shrimp, giant prawn and fry of famous and high-quality species.

8. The multi-stage pond coupled ecological cycle aquaculture method according to claim 5, characterized in that: The aquatic plants in step S3 are emergent plants and vegetables. The emergent plants are planted in the coastal zone of the C-type pond (3). An aquatic plant floating bed is arranged in the C-type pond (3), and the vegetables are cultivated on the aquatic plant floating bed.

9. The multi-stage pond coupled ecological cycle aquaculture method according to claim 5, characterized in that: The aquatic organisms in step S3 are silver carp, bighead carp, freshwater shrimp and shellfish.

10. The multi-stage pond coupled ecological cycle aquaculture method according to claim 5, characterized in that: Aquatic organisms that can feed on aquatic plants and shellfish are also cultured in Class C ponds (3).

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