CN221949045U - A land-based circular pond circulating water aquaculture system - Google Patents

Abstract

The utility model discloses a land-based round pond circulating water culture system which comprises a land-based round pond, wherein a mesh partition plate is arranged between the upper part and the lower part of the land-based round pond, a sewage outlet and a filter screen are arranged at the bottom of the land-based round pond, the land-based round pond is communicated with a sewage treatment pond through a sewage pipe, the sewage treatment pond is communicated with an ecological pond through a water pipe, the ecological pond is communicated with one end of an ultraviolet sterilizer, the other end of the ultraviolet sterilizer is communicated with a water suction pipe of a water suction pump, and a water outlet pipe of the water suction pump is communicated with the land-based round pond. The utility model filters the cultivation tail water at the lower part of the land-based round pond through the filter screen, thereby effectively solving the problem of blockage of pipelines and sewage treatment ponds caused by accumulation of large-particle pollutants in the cultivation tail water; the sewage treatment pool carries out multi-level sewage treatment on the cultivation tail water, so that the cultivation tail water treatment and resource utilization efficiency is improved; meanwhile, the self-purification of the culture tail water in the culture system is realized, and the pollution of the culture tail water to the external environment is reduced.

Description

A land-based circular pond circulating water aquaculture system

Technical Field

The utility model belongs to the technical field of aquaculture equipment, and in particular relates to a land-based circular pool circulating water culture system, which is suitable for fully enclosed circulating water culture.

Background Art

The aquaculture industry is mostly based on intensive pond farming, which is generally characterized by high stocking density, large amount of feed, high accumulation of leftover bait and feces, and thick pond sediment. The sediment that cannot be decomposed and utilized in time is prone to produce harmful substances such as ammonia nitrogen, hypochlorite, and methane, causing eutrophication of water bodies or local water environment pollution, thus causing the death of farmed aquatic species, causing farmed water pollution and economic losses for farmers.

Faced with many problems of traditional aquaculture, people began to explore new aquaculture methods. Land-based pond aquaculture is a small-footprint aquaculture method with high yield per unit water volume and strong controllability during the aquaculture process, and is therefore widely welcomed by farmers. However, land-based pond aquaculture has a higher density, large particles of tailwater residue, and high wastewater pollution concentration. Existing tailwater treatment devices are prone to clogging and the treatment effect is not ideal. The discharge after treatment will also bring a load to the surrounding water environment.

Therefore, in order to reduce the labor burden of farmers and the load on the surrounding water environment, realize fully closed recirculating aquaculture, achieve true zero emissions, not pollute the surrounding environment, and enhance the competitiveness of recirculating aquaculture, a land-based circular pool recirculating aquaculture system is needed.

Utility Model Content

The purpose of the utility model is to provide a land-based circular pond circulating water culture system in view of the above-mentioned problems existing in the prior art.

The above-mentioned purpose of the utility model is achieved by the following technical means:

A land-based circular pond circulating aquaculture system comprises a land-based circular pond, a sewage treatment pond, an ecological pond, a water pump, and an oxygenation device. The land-based circular pond is connected with the sewage treatment pond through a sewage discharge pipe, the sewage treatment pond is connected with the ecological pond through a drainage pipe, the ecological pond is connected with one end of an ultraviolet sterilizer, the other end of the ultraviolet sterilizer is connected with a water suction pipe of a water pump, the outlet pipe of the water pump is connected with the land-based circular pond, and the oxygenation device is connected with the land-based circular pond.

As mentioned above, the upper part of the land-based circular pool is cylindrical, the lower part of the land-based circular pool is inverted cone shape, a mesh partition is arranged between the upper and lower parts of the land-based circular pool, a sewage outlet is opened at the bottom of the land-based circular pool, a filter screen is arranged at the sewage outlet, the sewage outlet is connected to one end of the sewage pipe, and the other end of the sewage pipe is connected to the sewage treatment tank.

As mentioned above, the water level in the land-based circular pond is higher than that in the sewage treatment pond, and the water level in the sewage treatment pond is higher than that in the ecological pond.

As mentioned above, the sewage treatment pool includes a sewage collecting well, a sedimentation tank, a filter retaining wall, and a biological filter tank. A low-level sewage inlet and a high-level sewage outlet are provided on the sewage collecting well. The other end of the sewage discharge pipe is connected to the low-level sewage inlet of the sewage collecting well. The sewage collecting well is connected to the sedimentation tank through the high-level sewage outlet. A filter retaining wall is provided between the sedimentation tank and the biological filter tank. Zeolite and gravel are filled in the filter retaining wall. The biological filter tank is connected to the ecological pond through a drainage pipe.

As mentioned above, the pore size of the mesh partition is 1 cm, and the pore size of the filter is 3-5 mm.

As mentioned above, the areas of emergent plants, floating leaf plants, and submerged plants in the ecological pond account for 20-25%, 50-70%, and 20-25% of the ecological pond area, respectively.

As mentioned above, the volume of the biological filler in the biofilter is 60%-80% of the volume of the biofilter.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model filters the aquaculture tail water at the bottom of the land-based circular pool through a filter net, separates the large particle pollutants in the aquaculture tail water, and prevents the large particle pollutants from entering the sewage pipe and the sewage treatment pool, effectively solving the problem of the large particle pollutants in the aquaculture tail water clogging the pipe and the sewage treatment pool; the sewage treatment pool of the utility model performs multi-level sewage treatment on the aquaculture tail water, greatly improving the efficiency of aquaculture tail water treatment and resource utilization, reducing the water consumption and water quality control cost in the aquaculture process, and improving the aquaculture benefits. At the same time, the aquaculture tail water in the aquaculture system is self-purified, and the pollution of the aquaculture tail water to the external environment is reduced.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the process flow of water circulation in the utility model;

FIG2 is a schematic structural diagram of the land-based circular pool, the sewage pipe, and the sewage treatment tank of the utility model;

FIG3 is a schematic structural diagram of an eco-pond of the present utility model;

FIG4 is a schematic structural diagram of a mesh partition of a land-based circular pool of the utility model;

FIG5 is a schematic structural diagram of a filter screen for a land-based circular pool according to the present invention;

Reference numerals and corresponding component names:

1—land-based circular pool; 2—drain pipe; 3—sewage treatment pool; 4—ecological pond; 5—ultraviolet sterilizer; 6—water pump; 7—oxygenation device; 11—mesh partition; 12—filter; 31—sewage collection well; 32—sedimentation tank; 33—filter retaining wall; 34—biological filter; 35—low-level sewage inlet; 36—high-level sewage outlet; 37—drain pipe; 41—emergent plants; 42—floating-leaf plants; 43—submerged plants.

DETAILED DESCRIPTION

In order to facilitate those skilled in the art to understand and implement the present invention, the present invention is further described in detail below in conjunction with embodiments. The embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

Embodiment 1:

A land-based circular pond circulating aquaculture system comprises a land-based circular pond 1, a sewage discharge pipe 2, a sewage treatment pond 3, an ecological pond 4, an ultraviolet sterilizer 5, a water pump 6, and an oxygenation device 7. The land-based circular pond 1 is connected with the sewage treatment pond 3 through the sewage discharge pipe 2, the sewage treatment pond 3 is connected with the ecological pond 4 through the drainage pipe 37, the ecological pond 4 is connected with one end of the ultraviolet sterilizer 5, the other end of the ultraviolet sterilizer 5 is connected with the water suction pipe of the water pump 6, the outlet pipe of the water pump 6 is connected with the land-based circular pond 1, and the land-based circular pond 1 is also connected with the oxygenation device 7.

As an implementable embodiment, the ultraviolet sterilizer includes a transparent transmission pipeline and an ultraviolet lamp arranged outside the transparent transmission pipeline. The transparent transmission pipeline connects the ecological pond 4 and the water pump 6.

The mesh partition 11 divides the land-based circular pond 1 into an upper fish activity area and a lower aquaculture tailwater collection area. The filter net 12 is used to filter large particle pollutants to avoid clogging the sewage pipe 2 and the sewage treatment pool 3.

The aperture of the mesh partition 11 is 1 cm, and the aperture of the filter 12 is 3-5 mm.

The fish activity area at the top of the land-based circular pond 1 is cylindrical, the aquaculture tailwater collection area at the bottom of the land-based circular pond 1 is in the shape of an inverted cone, a mesh partition 11 is arranged between the top and bottom of the land-based circular pond 1, a sewage outlet is opened at the bottom of the land-based circular pond 1, and a filter screen 12 is arranged at the sewage outlet, the sewage outlet is connected to one end of the sewage pipe 2, and the other end of the sewage pipe 2 is connected to the sewage treatment tank 3.

The fish activity area at the upper part of the land-based circular pond 1 is located on the ground, and the aquaculture tailwater collection area at the lower part of the land-based circular pond 1 is located below the ground. The land-based circular pond 1 is higher than the sewage treatment pond 3, and the water level in the land-based circular pond 1 is higher than the water level in the sewage treatment pond 3. The ecological pond 4 is located below the ground, so that the water flow direction is from the land-based circular pond 1 to the sewage treatment pond 3 and then to the ecological pond 4. The water in the ecological pond 4 is then pumped back to the land-based circular pond 1 by the pump 6, thereby keeping the water level in the land-based circular pond 1 always higher than the water level in the sewage treatment pond 3.

The sewage treatment tank 3 includes a sewage collecting well 31, a sedimentation tank 32, a filter retaining wall 33, and a biological filter tank 34. The sewage collecting well 31 is provided with a low-position sewage inlet 35 and a high-position sewage outlet 36. The other end of the sewage discharge pipe 2 is connected to the low-position sewage inlet 35 of the sewage collecting well 31. The sewage collecting well 31 is connected to the sedimentation tank 32 through the high-position sewage outlet 36. A filter retaining wall 33 is arranged between the sedimentation tank 32 and the biological filter tank 34. The biological filter tank 34 is connected to the ecological pond 4 through a drainage pipe 37.

The aquaculture tail water at the lower part of the land-based circular pond 1 enters the sewage collection well 31 through the sewage outlet, the sewage pipe 2, and the low-level sewage inlet 35. The aquaculture tail water in the sewage collection well 31 enters the sedimentation tank 32 through the high-level sewage outlet 36. The aquaculture tail water is filtered through the sedimentation tank 32, the filter retaining wall 33, and the biological filter 34. The filtered water enters the ecological pond 4 through the drainage pipe 37 for purification treatment, and then the purified water after further purification treatment by the ultraviolet sterilizer 5 is sent back to the land-based circular pond 1 through the water pump 6 to realize water circulation, thereby achieving no need for additional water replenishment.

The large particle pollutants accumulated in the lower part of the land-based circular pond 1 and the bottom mud accumulated in the sedimentation tank 32 can be removed by regular manual treatment.

The filter retaining wall 33 is filled with zeolite and gravel, and the biofilter 34 is filled with biological fillers that account for 60%-80% of the volume of the biofilter 34. The microorganisms in the biofilter 34 grow on the organic matter in the fillers without the need to add additional nutrients.

Emergent plants 41 , floating-leaf plants 42 , and submerged plants 43 are planted in the ecological pond 4 , and their areas account for 20-25%, 50-70%, and 20-25% of the area of the ecological pond 4 , respectively.

As a feasible implementation plan, the fish activity area at the upper part of the land-based circular pond 1 has an inner diameter of 6m and a height of 1.8m; the aquaculture tailwater collection area at the lower part of the land-based circular pond 1 is 0.5m high, and the diameter of the sewage outlet is 20cm; the outlet pipe of the water pump 6 is connected to the land-based circular pond 1 at a position 30-50cm away from the top of the land-based circular pond 1; the area of the ecological pond 4 is ^1600m2 , the depth of the ecological pond 4 is 1.5m, the emergent plants 41 are canna or yellow iris or loosestrife, and the planting density is 25 plants/ ^m2 ; the floating leaf plants 42 are water lilies, and the planting density is 3 plants/ ^m2 ; the submerged plants 43 are Vallisneria or Hydrilla verticillata, and the planting density is 64 plants/ ^m2 . The aquaculture area of the land-based circular pond 1 is 28m ² , and the effective aquaculture volume is 40m ³ ; there are 10 land-based circular ponds 1 and the sewage pipes 2 , sewage treatment pools 3 , ultraviolet sterilizers 5 , water pumps 6 , and oxygenation devices 7 that are matched with the land-based circular ponds 1 ; the 10 land-based circular ponds 1 share one ecological pond 4 .

It should be noted that the embodiments described in the present invention are merely examples of the spirit of the present invention. Those skilled in the art of the present invention may make various modifications or additions to the embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the attached claims.

Claims (7)

1. A land-based circular pond recirculating aquaculture system, comprising a land-based circular pond (1), characterized in that it also comprises a sewage treatment pond (3), an ecological pond (4), a pump (6), and an oxygenation device (7), wherein the land-based circular pond (1) is connected to the sewage treatment pond (3) through a sewage discharge pipe (2), the sewage treatment pond (3) is connected to the ecological pond (4) through a drainage pipe (37), the ecological pond (4) is connected to one end of an ultraviolet sterilizer (5), the other end of the ultraviolet sterilizer (5) is connected to a water suction pipe of a pump (6), the outlet pipe of the pump (6) is connected to the land-based circular pond (1), and the oxygenation device (7) is connected to the land-based circular pond (1). 2. A land-based circular pond recirculating aquaculture system according to claim 1, characterized in that the upper part of the land-based circular pond (1) is cylindrical, the lower part of the land-based circular pond (1) is inverted cone shape, a mesh partition (11) is arranged between the upper and lower parts of the land-based circular pond (1), a sewage outlet is opened at the bottom of the land-based circular pond (1), a filter net (12) is arranged at the sewage outlet, the sewage outlet is connected to one end of the sewage pipe (2), and the other end of the sewage pipe (2) is connected to the sewage treatment tank (3). 3. A land-based circular pond recirculating aquaculture system according to claim 2, characterized in that the water level in the land-based circular pond (1) is higher than the water level in the sewage treatment pond (3), and the water level in the sewage treatment pond (3) is higher than the water level in the ecological pond (4). 4. A land-based circular pond recirculating aquaculture system according to claim 3, characterized in that the sewage treatment pool (3) includes a sewage collecting well (31), a sedimentation tank (32), a filter retaining wall (33), and a biological filter (34); a low-position sewage inlet (35) and a high-position sewage outlet (36) are provided on the sewage collecting well (31); the other end of the sewage discharge pipe (2) is connected to the low-position sewage inlet (35) of the sewage collecting well (31); the sewage collecting well (31) is connected to the sedimentation tank (32) through the high-position sewage outlet (36); a filter retaining wall (33) is arranged between the sedimentation tank (32) and the biological filter (34); the filter retaining wall (33) is filled with zeolite and gravel; the biological filter (34) is connected to the ecological pond (4) through a drainage pipe (37). 5. A land-based circular pond circulating aquaculture system according to claim 4, characterized in that the aperture of the mesh partition (11) is 1 cm, and the aperture of the filter (12) is 3-5 mm. 6. A land-based circular pond recirculating aquaculture system according to claim 5, characterized in that the areas of emergent plants (41), floating leaf plants (42), and submerged plants (43) in the ecological pond (4) account for 20-25%, 50-70%, and 20-25% of the area of the ecological pond (4), respectively. 7. A land-based circular pond circulating aquaculture system according to claim 6, characterized in that the volume of the biological filler in the biological filter (34) is 60%-80% of the volume of the biological filter (34).