Circulating breeding system

Abstract

The utility model discloses a circulating culture system, which comprises a culture pond, an inner circulating water treatment mechanism and an outer circulating water treatment mechanism, the inner circulating water treatment mechanism and the outer circulating water treatment mechanism are used for purifying water in the culture pond, the culture pond is circular, and the inner circulating water treatment mechanism comprises an outer ring pond arranged on the outer side of the culture pond. The outer ring pond comprises a microfiltration pond, a sedimentation pond, a brush pond, a biochemical pond and a clean water pond which are sequentially arranged in the circumferential direction of the outer ring pond, environment-friendly breeding with zero wastewater discharge can be achieved, the outer ring pond is arranged around the breeding pond, the structure is compact, land does not need to be planned for an internal circulation water treatment mechanism independently, the land utilization rate of a farm can be increased, and the land use cost is reduced; therefore, the economic benefit of the farm is improved, and the popularization value is better.

Description

Technical Field

[0001] The utility model relates to the technical field of aquaculture, in particular to a circulation aquaculture system. Background Art

[0002] With the development of the times and the advancement of technology, factory-based facility fisheries have also developed rapidly. At present, there are two main technologies for facility fishery farming. One is large-scale drainage and direct drainage technology, which maintains the water quality of the aquaculture water body to meet the growth requirements of fish through large-scale water changes, but this type of technology has high requirements for water sources and puts great pressure on the environment; the other is recirculating water aquaculture technology, which establishes a biochemical system to biochemically treat the aquaculture water body to reduce the content of harmful substances, thereby maintaining the normal growth of fish. This type of technology has high requirements for equipment investment and requires the establishment of a powerful biochemical system. For example, in the aquaculture system disclosed by our company in Chinese patent CN219981880U, the internal circulation biochemical pool of the internal circulation water treatment mechanism is separately arranged on one side of the aquaculture pond. This layout method occupies a large area and has high land use costs, making it difficult to promote on a large scale. Utility Model Content

[0003] The utility model provides a circulation breeding system to solve the technical problems of the existing breeding system that the internal circulation biochemical pool needs to be planned separately, occupies a large area and has high land use cost.

[0004] According to one aspect of the utility model, a circulating aquaculture system is provided, comprising a breeding pond, an internal circulating water treatment mechanism and an external circulating water treatment mechanism for purifying the water in the breeding pond, wherein the breeding pond is circular, and the internal circulating water treatment mechanism comprises an outer ring pool arranged outside the breeding pond, and the outer ring pool comprises a microfiltration tank, a sedimentation tank, a brush tank, a biochemical tank and a clear water tank arranged in sequence along its circumference.

[0005] Furthermore, the outer ring pool is provided with a first baffle, a second baffle and a filter dam for dividing it into a plurality of arc-shaped pools, a microfiltration pool is formed between two of the first baffles, a sedimentation pool is formed between the first baffle and the second baffle, a brush pool is formed between the second baffle and the filter dam, and a biochemical pool or a clean water pool is formed between two adjacent filter dams.

[0006] Furthermore, a microfiltration machine is arranged in the microfiltration pool, the microfiltration machine is connected with the breeding pool through a microfiltration water inlet pipeline, the microfiltration pool is connected with the sedimentation tank through a microfiltration water outlet pipeline, and a first water pump is arranged on the microfiltration water outlet pipeline.

[0007] Furthermore, a fluidized filter material is arranged in the biochemical pool, and an aeration plate is arranged at the bottom of the biochemical pool.

[0008] Furthermore, the external circulation water treatment mechanism includes an external circulation water pool for purifying water through aquatic plants and fish, the water inlet of the external circulation water pool is connected to the sewage pipe of the breeding pond, and the water outlet is connected to the breeding pond through an inlet pipe, and the inlet pipe is provided with an inlet reservoir for adjusting the inlet water temperature.

[0009] Furthermore, a sterilization mechanism and / or an aerator is arranged on the water inlet pipe.

[0010] Furthermore, the breeding pond includes a bottom sewage discharge structure and a water surface sewage discharge structure, the bottom sewage discharge structure includes a funnel-shaped bottom connected to the sewage discharge pipe, the water surface sewage discharge structure includes a vertical pipe arranged along the axial direction of the breeding pond and an overflow port arranged at the top of the vertical pipe, and the overflow port is provided with a perforated leakage cover for preventing aquatic products from entering.

[0011] Furthermore, an aeration pipe is arranged at the bottom of the breeding pond, and the aeration pipe is annular and arranged at the top of the funnel-shaped bottom.

[0012] Furthermore, it also includes a horizontal plate spanning the outer circumferential wall and the inner circumferential wall of the outer ring pool, and a ladder is arranged at one end of the horizontal plate away from the breeding pond.

[0013] Furthermore, slide rails are arranged at the top of the outer circumferential wall and the top of the inner circumferential wall of the outer ring pool, respectively, and rollers adapted to the slide rails are arranged on the surface of the transverse plate.

[0014] The utility model has the following beneficial effects:

[0015] The utility model discloses a circulating aquaculture system, wherein the aquaculture pond is used for aquaculture, the outer ring pond is used as a biochemical pond, the aquaculture pond and the outer ring pond form an in-water circulation system, and the in-water circulation is continuously or intermittently (timingly) performed according to the water quality. The submerged plants or emergent plants or fish are cultured in the outer circulating water treatment mechanism to purify the water in the in-water circulation system, and form an in-water system together with the in-water circulation system. When necessary, the water with poor water quality in the in-water circulation system can be discharged into the outer circulating water treatment mechanism, and clean water can be correspondingly extracted from the outer circulating water treatment mechanism to supplement the in-water circulation system, so as to realize environmentally friendly aquaculture with zero wastewater discharge. Meanwhile, the outer ring pond is arranged around the aquaculture pond, and has a compact structure. It is not necessary to plan land for the inner circulating water treatment mechanism separately, which can improve the land utilization rate of the aquaculture farm, reduce the land utilization cost, and thus the economic benefit of the aquaculture farm, and has good promotion value.

[0016] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of a circulating culture system of a preferred embodiment of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the outer ring pool of the preferred embodiment of the utility model.

[0020] Legend:

[0021] 1. Breeding pond; 11. Bottom sewage structure; 12. Water inlet pipe; 13. Aeration pipe; 14. Water surface sewage structure; 15. Sewage storage tank; 16. Sewage buffer tank; 17. Third water pump; 18. Sewage pipe; 2. Internal circulation water treatment mechanism; 21. External ring pool; 211. Microfiltration tank; 2111. Microfiltration machine; 2112. Microfiltration water inlet pipeline; 2113. Microfiltration water outlet pipeline; 2114. First water pump; 21 2. Sedimentation tank; 213. Brush tank; 214. Biochemical tank; 215. Clean water tank; 216. Aeration plate; 22. First water baffle; 23. Second water baffle; 24. Filter dam; 25. Horizontal plate; 251. Ladder; 3. External circulation water treatment mechanism; 31. External circulation water pool; 32. Inlet reservoir; 33. Inlet buffer tank; 34. Ozone generator; 35. Booster pump; 36. Ultraviolet lamp; 37. Second water pump. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0023] Please also read Figure 1 and Figure 2 The circulating aquaculture system of this embodiment includes a breeding pond 1, an internal circulating water treatment mechanism 2 and an external circulating water treatment mechanism 3 for purifying the water in the breeding pond 1. The breeding pond 1 is circular, and the internal circulating water treatment mechanism 2 includes an outer ring pool 21 arranged outside the breeding pond 1. The outer ring pool 21 includes a microfiltration pool 211, a sedimentation pool 212, a brush pool 213, a biochemical pool 214 and a clear water pool 215 arranged in sequence along its circumference. The internal circulating water treatment mechanism 2 is used to filter suspended particles in the water of the breeding pond 1 and eliminate soluble pollutants, and the external circulating water treatment mechanism 3 is used to purify the water through aquatic plants and fish.

[0024] In the circulating aquaculture system of this embodiment, the aquaculture pond 1 is used for aquaculture, and the outer ring pool 21 is used as a biochemical pool. The aquaculture pond 1 and the outer ring pool form a water body circulation system, which is continuously or intermittently (timing) circulated in the water body according to the water quality. The submerged plants, emergent plants or fish are cultivated in the outer circulating water treatment mechanism 3 to purify the water in the water body circulation system, and together with the water body circulation system, a water body system is formed outside the water body. When necessary, the water body with poor water quality in the water body circulation system can be discharged into the outer circulating water treatment mechanism 3, and clean water can be drawn from the outer circulating water treatment mechanism 3 to supplement the water body circulation system, so as to achieve environmentally friendly aquaculture with zero wastewater discharge; at the same time, the outer ring pool 21 is arranged around the aquaculture pond 1, with a compact structure, and there is no need to plan land for the inner circulating water treatment mechanism 2 separately, which can improve the land utilization rate of the farm and reduce the land use cost, thereby improving the economic benefits of the farm, and has good promotion value. Optionally, the outer ring pool 21 is arranged concentrically with the aquaculture pond 1.

[0025] In this embodiment, the outer ring pool 21 is provided with a first baffle 22, a second baffle 23 and a filter dam 24 for dividing it into a plurality of arc-shaped pools, a microfiltration pool 211 is formed between the two first baffles 22, a sedimentation pool 212 is formed between the first baffle 22 and the second baffle 23, a brush pool 213 is formed between the second baffle 23 and the filter dam 24, and a biochemical pool 214 or a clean water pool 215 is formed between two adjacent filter dams 24; the microfiltration pool 211 is surrounded by the two first baffles 22 and the inner and outer walls of the outer ring pool 21, and is used to filter out granular feed residues and fish feces; adjacent to the microfiltration pool 211, the inner and outer walls of the outer ring pool 21, the first baffle 23 and the filter dam 24 are provided. The water plate 22 and the second water-blocking plate 23 form an independent sedimentation tank 212 to precipitate water body residues; next to the sedimentation tank 212, the inner and outer walls of the outer ring pool 21, the second water-blocking plate 23 and the filter dam 24 form a brush pool 213 to filter the residual bait debris and feces in the sedimentation water; next to the brush pool 213, next to the sedimentation tank 212, the inner and outer walls of the outer ring pool 21 and the two filter dams 24 form a biochemical pool 214, using microorganisms to absorb and decompose organic matter, ammonia nitrogen and nitrite nitrogen and other soluble pollutants in the water; next to the biochemical pool 214, the inner and outer walls of the outer ring pool 21 and the two filter dams 24 form a clear water pool to inject the purified clear water into the breeding pool 1. Optionally, the filter dam 24 is volcanic stone, coral stone or sintered ceramic, which can intercept residues on the one hand and increase the surface area on the other hand, which is conducive to the attachment of microorganisms. Optionally, there is one microfiltration tank 211 and one clean water tank 215, sedimentation tanks 212 are symmetrically arranged on both sides of the microfiltration tank 211, biochemical tanks 214 are symmetrically arranged on both sides of the clean water tank 215, and a brush tank 213 is arranged between the biochemical tank 214 and the sedimentation tank 212. Optionally, the number of biochemical tanks 214 can be increased or decreased according to usage requirements.

[0026] In this embodiment, a microfilter 2111 is arranged in the microfilter pool 211, and the microfilter 2111 is connected to the culture pool 1 through a microfiltration water inlet pipe 2112. The microfilter pool 211 is connected to the sedimentation pool 212 through a microfiltration water outlet pipe 2113. A first water pump 2114 is arranged on the microfiltration water outlet pipe 2113. The water in the culture pool 1 flows into the microfilter 2111 through the microfiltration water inlet pipe 2112, and after the granular feed residue and fish feces are filtered out and flow out of the microfilter 2111, it enters the microfilter pool 211, and is extracted by the first water pump 2114. The water flows out on both sides through the microfiltration water outlet pipe 2113 and enters the sedimentation pool 212.

[0027] In this embodiment, a fluidized filter material is arranged in the biochemical pool 214, and an aeration plate 216 is arranged at the bottom of the biochemical pool 214. The aeration plate 216 causes the fluidized filter material to roll during aeration. Through the collision between the continuously rolling fluidized filter materials, the dead bacterial film attached to the rolling filter material can fall off, forming a new bacterial film, which can improve the purification effect.

[0028] In this embodiment, the external circulation water treatment mechanism 3 includes an external circulation water pool 31 for purifying water through aquatic plants and fish. The water inlet of the external circulation water pool 31 is connected to the sewage pipe 18 of the culture pond 1, and the water outlet is connected to the culture pond 1 through the water inlet pipe 12. The water inlet pipe 12 is provided with an inlet water reservoir 32 for adjusting the inlet water temperature. The water temperature is adjusted in the inlet water reservoir 32 to be close to the water temperature of the water in the culture pond 1 to avoid causing stress to the fish. Optionally, a second water pump 37 is arranged on the inlet pipe 12 between the external circulation water pool 31 and the inlet water reservoir 32 to ensure that the water in the external circulation water pool 31 can smoothly enter the inlet water reservoir 32. Optionally, a booster pump 35 is arranged on the inlet pipe 12 between the inlet water reservoir 32 and the culture pond 1 to ensure that the water in the inlet water reservoir 32 can smoothly enter the culture pond 1.

[0029] In this embodiment, a sterilization mechanism is arranged on the water inlet pipe 12. Optionally, the sterilization mechanism includes a water inlet buffer tank 33 and an ozone generator 34. The water inlet reservoir 32 is large in volume, and filling with ozone will result in too low a concentration, which cannot achieve the effect of sterilization and disinfection. Therefore, a water inlet buffer tank 33 with a smaller volume is separately set, and ozone is filled into the water body in the water inlet buffer tank 33 to kill harmful bacteria, parasites and eggs, and improve the water body to adapt to the growth of fish. Optionally, the water inlet buffer tank 33 can supply water to multiple water inlet reservoirs 32, and the ozone generator 34 is arranged in the water inlet buffer tank 32, which can reduce the number of ozone generators 32, thereby saving costs. Optionally, an ultraviolet lamp is arranged on the water inlet pipe 12, which can further kill harmful bacteria and minimize harmful bacteria and parasites in the water entering the breeding pond. Optionally, an aerator is arranged on the water inlet pipe 12.

[0030] In this embodiment, the culture pond 1 includes a bottom sewage discharge structure 11 and a water surface sewage discharge structure 14. The bottom sewage discharge structure 11 includes a funnel-shaped bottom connected to a sewage discharge pipe 18, which is conducive to collecting sewage in the center. The water surface sewage discharge structure 14 includes a vertical pipe arranged along the axial direction of the culture pond 1 and an overflow port arranged at the top of the vertical pipe. When the culture pond 1 continues to add water and the water surface exceeds the upper plane of the overflow port, it will overflow into the water pipe for discharge, and the scum on the water surface will also flow out. In order to prevent fish from entering, a perforated leak cover will be set at the pipe mouth, and the aperture can leak out the residue but no fish will enter. Optionally, a sewage discharge reservoir 15 is arranged on the sewage discharge pipe 18, and the bottom sewage discharge structure 11 and the water surface sewage discharge structure 14 are connected to the sewage discharge reservoir 15. The water body is discharged after accumulating in the sewage discharge reservoir 15, which can flush the sewage discharge pipe 18 and prevent the sewage discharge pipe 18 from being blocked. Optionally, a sewage buffer tank 16 is arranged on the sewage pipe 18. The sewage buffer tank 16 is arranged between the sewage storage tank 15 and the external circulation water tank 31. It can accumulate sewage discharged from the breeding pond 1. The water in the sewage buffer tank 16 is pumped into the external circulation water tank 31 through the third water pump 17 to avoid the water in the sewage pipe 18 directly impacting the external circulation water tank 31, thereby providing a stable environment for the aquatic plants and fish in the external circulation water tank 31.

[0031] In this embodiment, an aeration pipe 13 is arranged at the bottom of the breeding pond 1. The aeration pipe 13 is annular and arranged at the top of the funnel-shaped bottom; the aeration pipe 13 can increase the dissolved oxygen in the water in the breeding pond, and at the same time can push the water to flow toward the center, thereby improving the pollution collection effect and pushing feed residues and fish feces to the bottom center of the breeding pond 1 for discharge.

[0032] In this embodiment, it also includes a horizontal plate 25 spanning the outer circumferential wall and the inner circumferential wall of the outer ring pool 21. A ladder 251 is arranged at the end of the horizontal plate 25 away from the breeding pond 1. The breeding personnel climb up the horizontal plate 25 via the ladder 251 to observe and operate the breeding pond 1 and the outer ring pool 21.

[0033] In this embodiment, slide rails are respectively arranged at the top of the outer circumferential wall and the top of the inner circumferential wall of the outer ring pool 21, and rollers compatible with the slide rails are arranged on the surface of the cross plate 25, which can push the cross plate 25 to move along the circumference of the outer ring pool 21, making it convenient for the breeding personnel to observe and operate at different positions.

[0034] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A circulating aquaculture system, characterized in that: The invention comprises a breeding pond (1), an internal circulation water treatment mechanism (2) and an external circulation water treatment mechanism (3) for purifying water in the breeding pond (1), The culture pond (1) is circular, and the internal circulation water treatment mechanism (2) comprises an outer ring pool (21) arranged outside the culture pond (1). The outer ring pool (21) comprises a microfiltration pool (211), a sedimentation pool (212), a brush pool (213), a biochemical pool (214) and a clear water pool (215) which are sequentially arranged along the circumference thereof.

2. The circulating aquaculture system according to claim 1, characterized in that: The outer ring pool (21) is provided with a first baffle (22), a second baffle (23) and a filter dam (24) for dividing it into a plurality of arc-shaped pools. A microfiltration pool (211) is formed between the two first baffles (22), a sedimentation pool (212) is formed between the first baffle (22) and the second baffle (23), a brush pool (213) is formed between the second baffle (23) and the filter dam (24), and a biochemical pool (214) or a clean water pool (215) is formed between two adjacent filter dams (24).

3. The circulating aquaculture system according to claim 2, characterized in that: A microfilter (2111) is arranged in the microfilter pool (211); the microfilter (2111) is connected to the culture pool (1) via a microfilter water inlet pipeline (2112); the microfilter pool (211) is connected to the sedimentation pool (212) via a microfilter water outlet pipeline (2113); and a first water pump (2114) is arranged on the microfilter water outlet pipeline (2113).

4. The circulating aquaculture system according to any one of claims 1 to 3, characterized in that: A fluidized filter material is arranged inside the biochemical pool (214), and an aeration plate (216) is arranged at the bottom of the biochemical pool (214).

5. The circulating aquaculture system according to claim 4, characterized in that: The external circulation water treatment mechanism (3) comprises an external circulation water pool (31) for purifying water through aquatic plants and fish, the water inlet of the external circulation water pool (31) being connected to the sewage pipe (18) of the breeding pond (1), and the water outlet being connected to the breeding pond (1) through an inlet pipe (12), and an inlet water reservoir (32) for adjusting the inlet water temperature being arranged on the inlet pipe (12).

6. The circulating aquaculture system according to claim 5, characterized in that: The water inlet pipe (12) is provided with a sterilizing mechanism and / or an aerator.

7. The circulating aquaculture system according to claim 5, characterized in that: The culture pond (1) comprises a bottom sewage discharge structure (11) and a water surface sewage discharge structure (14); the bottom sewage discharge structure (11) comprises a funnel-shaped bottom connected to the sewage discharge pipe (18); the water surface sewage discharge structure (14) comprises a vertical pipe arranged along the axial direction of the culture pond (1) and an overflow port arranged at the top end of the vertical pipe; the overflow port is provided with a perforated leak cover for preventing aquatic products from entering.

8. The circulating aquaculture system according to claim 7, characterized in that: An aeration pipe (13) is arranged at the bottom of the culture pond (1); the aeration pipe (13) is annular and arranged at the top of the funnel-shaped bottom.

9. The circulating aquaculture system according to claim 4, characterized in that: It also comprises a transverse plate (25) spanning the outer circumferential wall and the inner circumferential wall of the outer ring pool (21), and a ladder (251) is arranged at one end of the transverse plate (25) away from the breeding pool (1).

10. The circulating aquaculture system according to claim 9, characterized in that: Slide rails are arranged at the top of the outer circumferential wall and the top of the inner circumferential wall of the outer ring pool (21), respectively, and rollers matching the slide rails are arranged on the surface of the transverse plate (25).

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