CN110845087A

CN110845087A - Annular runway type recirculating aquaculture system

Info

Publication number: CN110845087A
Application number: CN201911301891.3A
Authority: CN
Inventors: 宋德东; 彭磊; 王小洁; 张建伟; 刘晶; 刘毅
Original assignee: Trans-Oceanic Aqua Sciences Inc In Qingdao; Ocean University of China
Current assignee: Trans-Oceanic Aqua Sciences Inc In Qingdao; Ocean University of China
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-02-28

Abstract

The invention relates to an annular runway type circulating water culture system, and belongs to the technical field of aquaculture. The invention comprises an annular culture area and a sewage treatment area, wherein the culture area comprises an annular culture pond, and the sewage treatment area is positioned on the inner side of the annular culture pond; the sewage treatment area is provided with an ultraviolet sterilization tank, an ozone sterilization tank, an aeration tank, a micro-filter tank, a biological tank, an overflow channel and a water return tank, wherein the ultraviolet sterilization tank, the ozone sterilization tank and the aeration tank are sequentially connected; the return water tank, the micro-filter tank and the biological tank are sequentially connected, and the overflow channel is connected with the ultraviolet sterilization tank. The invention solves the defect that the culture pond occupies a large area but cannot meet the requirement of long-time swimming of fishes; the arrangement and the laying of water supply and drainage pipelines in the recirculating aquaculture system are eliminated, so that the construction cost and the construction difficulty are saved, and the pipeline resistance is reduced; and reduce manual maintenance in daily use; two sets of rotation symmetric water treatment systems save energy, reduce consumption and improve the breeding safety coefficient.

Description

Annular runway type recirculating aquaculture system

Technical Field

The invention relates to an annular runway type circulating water culture system, and belongs to the technical field of aquaculture.

Background

The prior aquaculture system has the following defects:

(1) most of the existing circulating culture systems adopt lift pumps, so that the lifting height is high, and the energy consumption is high; the lifting water quantity and the flow rate of the lifting pump are limited by the diameter and the length of the pipeline;

(2) pollutants are difficult to collect and treat, and the pollutant collection and treatment are not thorough;

(3) the existing circulating culture system cannot realize large flow of a culture pond unless an ultrahigh-power lift pump is adopted, and the culture requirement of migratory fishes is difficult to meet;

(4) the existing culture pond adopts a rectangular, round, square and other structures, and cannot meet the characteristic that swimming fishes swim uninterruptedly at a high speed for a long distance.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides an annular runway type circulating water culture system, which solves the defect that the culture pond occupies a large area but cannot meet the requirement of long-time swimming of fishes; and the arrangement and the laying of water supply and drainage pipelines in the recirculating aquaculture system are cancelled, so that the construction cost and the construction difficulty are saved, and the pipeline resistance is reduced; and reduce manual maintenance in daily use; two sets of rotation symmetric water treatment systems save energy, reduce consumption and improve the breeding safety coefficient.

The annular runway type recirculating aquaculture system comprises an annular aquaculture area and a sewage treatment area, wherein the aquaculture area comprises an annular aquaculture pond, and the sewage treatment area is positioned on the inner side of the annular aquaculture pond; the sewage treatment area is provided with an ultraviolet sterilization tank, an ozone sterilization tank, an aeration tank, a micro-filter tank, a biological tank, an overflow channel and a water return tank, wherein the ultraviolet sterilization tank, the ozone sterilization tank and the aeration tank are sequentially connected; the aeration tank comprises an axial flow pump, a water outlet seam and a water return seam, the axial flow pump is positioned between the ozone disinfection tank and the aeration tank, the aeration tank is connected with the annular culture tank through the water outlet seam, the water outlet of the annular culture tank is connected with the water return seam, the water return seam is connected with the water return tank, and the water return tank is connected with the micro-filter tank and the overflow channel; gates are arranged between the water return pool and the overflow channel, between the micro-filter pool and between the water return pool and the biological pool; the return water tank, the micro-filter tank and the biological tank are sequentially connected, and the overflow channel is connected with the ultraviolet sterilization tank.

Preferably, V type collection blowdown groove is evenly laid to the bottom in annular breed pond, and V type collection blowdown groove is hourglass hopper-shaped and sets up, and horizontal fish blocking fence is installed on the upper portion in V type collection blowdown groove, and plug blowdown sleeve pipe is installed to the bottom in V type collection blowdown groove.

Preferably, the annular culture pond is provided with a plurality of V-shaped sewage collecting and discharging grooves, and the bottom of the pond between the previous stage sewage collecting and discharging groove and the next stage sewage collecting and discharging groove is of a down-slope structure.

Preferably, the plug-pull sewage casing pipe is a sewage draining and emptying pipe pre-buried at the bottom of the annular culture pond, the sewage draining and emptying pipe consists of a bottommost horizontal buried pipe, a 90-degree elbow casing pipe and a vertical plug-pull pipe, and the vertical plug-pull pipe is connected with the V-shaped sewage collecting and draining groove.

Preferably, the biological pond is divided into a first-stage biological pond, a second-stage biological pond and a third-stage biological pond at least, a filter material barrier net I is arranged between the first-stage biological pond and the second-stage biological pond, a filter material barrier net II is arranged at the tail end of the second-stage biological pond, a filter material barrier net III is arranged between the second-stage biological pond and the third-stage biological pond, and a filter material barrier net IV is arranged between the third-stage biological pond and the ultraviolet sterilization pond.

Preferably, the bottoms of the water outlet seam and the water return seam are flush with the bottom of the tank, and the water outlet direction and the water inlet direction are obliquely arranged relative to the tank wall.

Preferably, the sewage treatment area is divided into two sets of rotationally symmetrical water treatment systems I and II, two overflow channels are arranged between the water treatment systems I and II and are symmetrically arranged along the centers of the overflow channels by rotating 180 degrees; the water treatment system I and the water treatment system II are respectively provided with a group of ultraviolet sterilization tank, an ozone disinfection tank, an aeration tank, a micro-filter tank, a biological tank and a water return tank.

Preferably, gates are arranged between the water return tank and the overflow channel, between the micro-filter tank and between the water return tank and the primary biological tank.

The invention has the beneficial effects that:

(1) the underground annular culture pond and the water treatment system are adopted, the underground space is fully utilized, and a certain heat preservation effect can be achieved through the soil layer;

(2) in the normal operation process of the invention, the number of water pipelines and channels is reduced to the minimum, the obstruction of the pipelines and channels to the water body flow is reduced to the minimum, and the energy is saved and the consumption is reduced;

(3) the water inlet and return of the annular culture pond are of tangent line type structures, so that water circulation is completed, the flow rate of the water in the culture pond is increased, and the culture environment is improved;

(4) the fish culture density of the invention can reach 50kg/m³The above;

(5) the invention adds links of ultraviolet sterilization and ozone disinfection, and effectively prevents the generation of water body diseases;

(6) the overflow channel is used for water flow diversion, so that the system operation safety coefficient is improved;

(7) the daily maintenance and cleaning of the invention can be completed by one person;

(8) the invention not only can culture common fishes, but also is more suitable for culturing cold water-based and swimming fishes, such as rainbow trout, Atlantic salmon and the like;

(9) the invention is provided with two sets of water treatment systems, when the high-density cultivation is carried out, two sets of water treatment systems are used, and when the cultivation density is low, one set of water treatment system is used, so that the energy is saved and the consumption is reduced.

Drawings

FIG. 1 is a schematic diagram of the present invention.

FIG. 2 is a second schematic structural diagram of the present invention.

Fig. 3 is a schematic structural diagram of a plug-in sewage sleeve.

FIG. 4 is a process flow diagram of the present invention.

In the figure: 1. an ultraviolet sterilization pool; 2. an ozone disinfection tank; 3. an aeration tank; 31. an axial flow pump; 32. water outlet seams; 33. water return seam; 4. an annular culture pond; 41. a V-shaped sewage collecting and discharging tank; 42. horizontal fish-blocking bars; 43. plugging and unplugging the sewage discharge sleeve; 5. a microfiltration machine tank; 6. a primary biological pond; 7. a secondary biological pond; 71. a filter material blocking net I; 72. a filter material blocking net II; 8. a third-stage biological pond; 81. a filter material blocking net III; 82. a filter material blocking net IV; 9. an overflow channel; 10. and (5) returning the water to the pool.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

as shown in fig. 1 to 3, the annular runway type recirculating aquaculture system of the invention comprises an annular aquaculture area and a sewage treatment area, wherein the aquaculture area comprises an annular aquaculture pond 4, and the sewage treatment area is positioned at the inner side of the annular aquaculture pond 4; the sewage treatment area is provided with an ultraviolet sterilization tank 1, an ozone sterilization tank 2, an aeration tank 3, a micro-filter tank 5, a biological tank, an overflow channel 9 and a water return tank 10, wherein the ultraviolet sterilization tank 1, the ozone sterilization tank and the aeration tank 3 are sequentially connected; the aeration tank 3 comprises an axial flow pump 31, a water outlet seam 32 and a water return seam 33, the axial flow pump 31 is positioned between the ozone disinfection tank and the aeration tank 3, the aeration tank 3 is connected with the annular culture tank 4 through the water outlet seam 32, the water outlet of the annular culture tank 4 is connected with the water return seam 33, the water return seam 33 is connected with the water return tank 10, and the water return tank 10 is connected with the micro-filter tank 5 and the overflow channel 9; gates are arranged between the water return tank 10 and the overflow channel 9, between the micro-filter tank 5 and between the biological tanks; the water return tank 10, the micro-filter tank 5 and the biological tank are connected in sequence, and the overflow channel 9 is connected with the ultraviolet sterilization tank 1.

V-shaped sewage collecting and discharging grooves 41 are uniformly distributed at the bottom of the annular culture pond 4, the V-shaped sewage collecting and discharging grooves 41 are funnel-shaped, horizontal fish barriers 42 are installed on the upper portions of the V-shaped sewage collecting and discharging grooves 41, and plug-pull sewage discharging sleeves 43 are installed at the bottoms of the V-shaped sewage collecting and discharging grooves 41.

The annular culture pond 4 is provided with a plurality of V-shaped sewage collecting and discharging grooves 41, and the bottom of the pond between the previous stage sewage collecting and discharging groove and the next stage sewage collecting and discharging groove is of a down-slope structure.

The plug-pull sewage casing pipe 43 is a sewage draining and emptying pipe which is pre-buried at the bottom of the annular culture pond 4, the sewage draining and emptying pipe is composed of a bottommost horizontal buried pipe, a 90-degree elbow casing pipe and a vertical plug-pull pipe, and the vertical plug-pull pipe is connected with the V-shaped sewage collecting and draining groove 41.

The biological pond is divided into first order biological pond 6, second grade biological pond 7, tertiary biological pond 8 at least, is provided with filter material barrier I71 between first order biological pond 6 and the second grade biological pond 7, and second grade biological pond 7 end is provided with filter material barrier II 72, is provided with filter material barrier III 81 between second grade biological pond 7 and the tertiary biological pond 8, is provided with filter material barrier IV 82 between tertiary biological pond 8 and ultraviolet sterilization pond 1.

The bottoms of the water outlet seam 32 and the water return seam 33 are flush with the bottom of the tank, and the water outlet direction and the water inlet direction are obliquely arranged relative to the tank wall.

The sewage treatment area is divided into two sets of rotationally symmetrical water treatment systems I and II, two overflow channels 9 are arranged between the water treatment systems I and II and are symmetrically arranged along the centers of the overflow channels 9 in a 180-degree rotating manner; the water treatment system I and the water treatment system II are respectively provided with a group of ultraviolet sterilization tank 1, an ozone disinfection tank 2, an aeration tank 3, a micro-filter tank 5, a biological tank and a water return tank 10.

And gates are arranged between the water return tank 10 and the overflow channel 9, between the micro-filter tank 5 and between the water return tank and the primary biological tank 6.

According to the inventionThe beneficial effects are that: the underground annular culture pond 4 and the water treatment system are adopted, the underground space is fully utilized, and a certain heat preservation effect can be achieved through a soil layer; in the normal operation process of the system, the number of water conveying pipelines and channels is reduced to the minimum, the obstruction of the pipelines and channels to the water body flow is reduced to the minimum, and the energy is saved and the consumption is reduced; the water inlet and return of the annular culture pond 4 are in tangent structure, so that water circulation is completed, the flow rate of the water in the culture pond is improved, and the culture environment is improved; the fish culture density can reach 50kg/m³The above; links of ultraviolet sterilization and ozone disinfection are added, and the generation of water body diseases is effectively prevented; the overflow channel 9 is used for water flow diversion, so that the system operation safety coefficient is improved; the daily maintenance and cleaning of the system can be finished by one person; the invention not only can culture common fishes, but also is more suitable for culturing cold water-based and swimming fishes, such as rainbow trout, Atlantic salmon and the like; the invention is provided with two sets of water treatment systems, when the high-density cultivation is carried out, two sets of water treatment systems are used, and when the cultivation density is low, one set of water treatment system is used, so that the energy is saved and the consumption is reduced.

Example 2:

the invention aims to overcome the defects in the prior art, and provides an annular runway type circulating water culture system which is convenient to construct, install and use, is suitable for adjusting the flow velocity and flow state of a simulated river channel, provides an open-swimming water environment for fishes, is convenient for artificial feeding and domestication of wild parent fishes, wild exercise of artificial proliferation and releasing fish fries, fattening of artificially cultured fishes, experimental test of swimming capacity of fishes, improvement of animal welfare for cultured fishes and the like. Has the advantages of small occupied area, convenience, rapidness and simple operation.

The using process of the invention is as follows:

as shown in fig. 4, an external water source flows into an ultraviolet sterilization tank 1 of the water treatment system, flows into an ozone sterilization tank 2 automatically after being sterilized by an ultraviolet sterilizer of the ultraviolet sterilization tank 1, is sterilized by ozone generated by an ozone machine, raises the water level by an axial flow pump 31 (the flow rate of the axial flow pump 31 is adjustable), enters an aeration tank 3, is oxygenated, removes carbon dioxide and ozone, enters an annular culture tank 4 through a water outlet seam 32 tangent line, drives the water in the tank to flow, and is provided with a fish blocking net outside the water outlet seam 32 to prevent fishes in the culture tank from entering the water treatment system.

The incomplete bait excrement and urine of 4 bottoms in pond is bred to the annular, because of bottom of the pool slope and rivers erode, gathers to V type collection dirt discharging groove, and this structure shape is like the funnel, and low in the middle of the edge height is equipped with plug blowdown sleeve pipe 43, and V type collection dirt discharging groove upper portion is equipped with horizontal fish blocking fence 42, only holds incomplete bait excrement and urine and passes through, prevents that fish from being siphoned away by the plug blow off pipe of bottom. Plug blowdown sleeve pipe 43 is pre-buried blowdown evacuation pipe at the bottom of the pool, and this pipe comprises bottommost level buried pipe, 90 elbow sleeve pipes, vertical plug pipe, and personnel stand and pull out vertical plug pipe at the pool edge and can open the drain, accomplish breed pond blowdown or evacuation, avoid underground installation valve, personnel's drawback of switch valves such as overhaul well down.

The drainage of the annular culture pond 4 tangentially flows out through the water return seam 33 and enters the water treatment system, and a fish blocking net is arranged outside the water return seam 33 to prevent the fishes in the culture pond from entering the water treatment system.

After the drainage entered the return water pond 10 through return water seam 33, divide three routes operation under different operating modes:

(1) under normal working conditions, draining water firstly enters a micro-filter tank 5, large-particle residual bait excrement is filtered by the micro-filter, then enters a first-stage biological tank, a second-stage biological tank and a third-stage biological tank through a gate in sequence to complete the purification of microorganisms, and finally enters an ultraviolet sterilization tank 1;

(2) when the micro-filter is damaged, the drainage of the culture pond directly enters a first-level biological pond, a second-level biological pond and a third-level biological pond to complete the purification of microorganisms, and finally enters an ultraviolet sterilization pond 1 to ensure the short-time operation of the culture system through the temporary treatment of a water treatment system, preferentially ensure the survival of fishes, and reserve time for the maintenance of the micro-filter;

(3) when the micro-filter and the biological pond are cleaned and overhauled, the drained water directly enters the ultraviolet sterilization pond 1 through the overflow channel 9, and the water body flow of the annular culture pond 4 is preferentially ensured.

Two sets of rotational symmetric water treatment systems are arranged in the middle of the annular culture pond 4, when high-density culture is carried out, two sets of water treatment systems are used, and when the culture density is low, one set of water treatment system is used, so that energy is saved and consumption is reduced; the invention not only can culture common fishes, but also is more suitable for culturing cold water fishes, such as rainbow trout, Atlantic salmon and the like; the runway type culture pond is also suitable for shrimp culture and has obvious effect.

The invention can be widely applied to aquaculture occasions.

It is well within the skill of those in the art to implement and protect the present invention without undue experimentation and without undue experimentation that the present invention is directed to software and process improvements.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An annular runway type recirculating aquaculture system is characterized by comprising an annular aquaculture area and a sewage treatment area, wherein the aquaculture area comprises an annular aquaculture pond (4), and the sewage treatment area is positioned on the inner side of the annular aquaculture pond (4); the sewage treatment area is provided with an ultraviolet sterilization tank (1), an ozone sterilization tank (2), an aeration tank (3), a micro-filter tank (5), a biological tank, an overflow channel (9) and a water return tank (10), wherein the ultraviolet sterilization tank (1), the ozone sterilization tank and the aeration tank (3) are sequentially connected; the aeration tank (3) comprises an axial flow pump (31), a water outlet seam (32) and a water return seam (33), the axial flow pump (31) is positioned between the ozone disinfection tank and the aeration tank (3), the aeration tank (3) is connected with the annular culture tank (4) through the water outlet seam (32), the water outlet of the annular culture tank (4) is connected with the water return seam (33), the water return seam (33) is connected with the water return tank (10), and the water return tank (10) is connected with the micro-filter tank (5) and the overflow channel (9); gates are arranged among the water return pool (10), the overflow channel (9), the micro-filter pool (5) and the biological pool; the water return tank (10), the micro-filter tank (5) and the biological tank are sequentially connected, and the overflow channel (9) is connected with the ultraviolet sterilization tank (1).

2. An annular runway type recirculating aquaculture system according to claim 1, characterized in that the bottom of the annular aquaculture pond (4) is uniformly provided with V-shaped sewage collecting and discharging grooves (41), the V-shaped sewage collecting and discharging grooves (41) are arranged in a funnel shape, the upper parts of the V-shaped sewage collecting and discharging grooves (41) are provided with horizontal fish blocking fences (42), and the bottoms of the V-shaped sewage collecting and discharging grooves (41) are provided with plug-in sewage discharging sleeves (43).

3. An annular runway type recirculating aquaculture system according to claim 2, characterized in that the annular aquaculture pond (4) is provided with a plurality of V-shaped sewage collecting and discharging grooves (41), and the bottom of the pond between the previous stage sewage collecting and discharging groove and the next stage sewage collecting and discharging groove is of a down-slope structure.

4. The annular runway type recirculating aquaculture system of claim 2, characterized in that the plug-in drain casing (43) is a drain pipe pre-embedded at the bottom of the annular aquaculture pond (4), and the drain pipe is composed of a bottommost horizontal buried pipe, a 90-degree elbow casing and a vertical plug-pull pipe, and the vertical plug-pull pipe is connected with the V-shaped collection drain groove (41).

5. An annular runway type recirculating aquaculture system according to claim 1, characterized in that the biological pond is divided into at least a first biological pond (6), a second biological pond (7) and a third biological pond (8), a filter material barrier net I (71) is arranged between the first biological pond (6) and the second biological pond (7), a filter material barrier net II (72) is arranged at the tail end of the second biological pond (7), a filter material barrier net III (81) is arranged between the second biological pond (7) and the third biological pond (8), and a filter material barrier net IV (82) is arranged between the third biological pond (8) and the ultraviolet sterilization pond (1).

6. An annular runway type recirculating aquaculture system as claimed in claim 1 wherein the bottoms of the water outlet slits (32) and the water return slits (33) are flush with the bottom of the pond, and the water outlet and water inlet directions are inclined relative to the pond wall.

7. The circular track type recirculating aquaculture system of claim 1, wherein the sewage treatment area is divided into two sets of a water treatment system I and a water treatment system II which are rotationally symmetric, two overflow channels (9) are arranged between the water treatment system I and the water treatment system II, and the two overflow channels are symmetrically arranged along the center of the overflow channel (9) in a 180-degree rotating manner; the water treatment system I and the water treatment system II are respectively provided with a group of ultraviolet sterilization tanks (1), an ozone disinfection tank (2), an aeration tank (3), a micro-filter tank (5), a biological tank and a water return tank (10).

8. An annular runway type recirculating aquaculture system according to claim 5, characterized in that gates are arranged between the backwater pool (10) and the overflow channel (9), the micro-filter pool (5) and the primary biological pool (6).