JP2011030442A - Culture facility for aquatic organisms - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a culture facility that suppresses soil pollution and water pollution of an aquaculture pond in advance and to healthily grow and harvest aquatic organisms. <P>SOLUTION: The culture facility includes the aquaculture pond produced by laying a polymer sheet 12 on a culture land 10 constructed in a low ground so as to cover the whole culture land and filling the covered culture land with water from the top of the land. Since water is stored through the polymer sheet 12, the aquaculture pond achieves an underwater environment completely isolated from soil under the aquaculture pond. Even if the bottom of the pond is an artificial substance like the polymer sheet 12, the polymer sheet does not influence healthy growth of aquatic organisms at all, rather water qualities are excellently maintained since water is isolated from pollution of soil components and the growth environment of aquatic organisms is improved. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an aquaculture facility suitable for use in culturing aquatic organisms such as shrimp in an aquaculture pond.

  Conventionally, regarding aquaculture of aquatic organisms such as shrimp, there is known a prior art for preventing water pollution in an aquaculture pond and maintaining water quality suitable for breeding over a long period of time (see, for example, Patent Document 1). . This prior art provides a water flow device in the culture pond and circulates the water in the culture pond along its peripheral area, while introducing solid chlorine tablets into the sludge deposited in the non-flow area of the culture pond. It is to purify. According to this prior art, once the processing object accumulates as sludge at the bottom of the culture pond, the sludge disappears due to the decomposition action of the chlorine tablets. It is thought that.

  As another prior art, there is also known a method of not only decomposing organic matter deposited on the bottom of aquaculture ponds and tidal flats but also converting it into feed for aquatic organisms (see, for example, Patent Document 2). This prior art is to promote the growth of microorganisms at the bottom of the pond by spraying amorphous hydrous iron oxide (iron dioxide) on the bottom of the pond. That is, since amorphous hydrous iron oxide can be easily used as soluble iron by soil microorganisms, it is expected that the microbial flora will be maintained healthy at the bottom of the pond by spraying it. As a result, it is considered that the organic matter accumulated in the bottom of the pond (such as leftover food or excrement of food given to shrimp) is not only decomposed by microbial activity, but also converted into food effective for shrimp.

JP-A-8-298894 JP 2009-11271 A

  In general, sludge in an aquaculture pond is a mixture of leftovers of administered food, fertilizer sedimentation, aquatic organism excrement (feces, molting shells), phytoplankton carcasses, other organisms, and mud. Occurs. Since such sludge contains hazardous substances, it is difficult to dispose of it. If it is disposed carelessly, the surrounding environment will be destroyed. The above-mentioned prior arts (Patent Documents 1 and 2) all suppress the generation of sediment waste by decomposing deposited sludge, which is difficult to dispose of, or by switching to feed. It is effective to some extent in preventing deterioration.

However, since the prior art (Patent Document 1) mentioned above temporarily accumulates a considerable amount of sludge at the bottom of the aquaculture pond due to the generation of the circulating water flow, the sludge remains until the sludge is completely decomposed. When the pressure density of (mound) increases, it becomes anaerobic, and there is a problem that the sulfur content in the soil is spoiled and the concentration of hydrogen sulfide (H ₂ S) is increased. This problem is also the same in the prior art (Patent Document 2) listed later until the pond-bottom microorganisms propagate and become active even after the amorphous hydrous iron oxide is sprinkled. Since a certain amount of time is required for this, if the pressure density of the deposit increases during that time, it becomes anaerobic, and decay proceeds and the concentration of hydrogen sulfide increases. When the hydrogen sulfide concentration increases, the amount of dissolved oxygen in the water decreases and the aquaculture pond becomes water-polluted, greatly inhibiting the growth of aquatic organisms.

  In addition, if sludge accumulates on the bottom of the aquaculture pond even temporarily, aquatic organisms may sink into it and poison it, which may harm its health. In particular, when aquaculture ponds are drained during harvesting operations, aquatic organisms that try to escape from capture often sneak into sludge in search of hiding places, and even individuals that have been nurtured by this are poisoned at the end. There is also a problem of doing so.

  The present invention has been made in view of the above-described circumstances, and it is an object of the present invention to provide an aquaculture facility that can prevent water contamination as well as soil contamination of an aquaculture pond in advance and can cultivate and harvest aquatic organisms in a healthy manner. is there.

  In order to solve the above problems, the present invention employs the following solutions.

  That is, the aquaculture facility of the present invention provides a culture pond by laying a sheet material in a state covering the entire surface of the aquaculture land formed in a depression shape and storing water in the aquaculture land through this sheet material. As a result, the aquaculture pond forms an aquatic environment isolated from the soil of the aquaculture site. In addition, two lines of piping are installed in the aquaculture pond, one of which is used for pumping and the other is used for circulating water after filtration. The sheet material preferably has a width (area) that covers not only the bottom surface of the aquaculture pond but also the peripheral slope, and has a strength that does not easily break even if water is applied on the sheet material. To do. However, since the water pressure is supported by the aquaculture land through the sheet material, the sheet material itself does not need to have sufficient strength to withstand the total water pressure. In the present invention, the aquaculture land can be created by excavating land or can be created by installing an enclosure on the ground.

  According to the aquaculture facility of the present invention, since the aquatic environment of the aquaculture pond is completely isolated from the soil, the pond bottom soil is basically irrelevant to the ecosystem in the aquaculture pond. ) No deposits such as sludge are generated. Conventionally, it has been naturally considered that the aquaculture pond's geopower and soil environment are indispensable for the breeding of aquatic organisms. However, the present invention provides an environment in which aquatic organisms such as shrimp are isolated from soil (sheet material). This is based on the knowledge that even if it is on an artificial membrane such as This can be easily understood from the case where many aquatic organisms are nurtured in an artificial aquarium. Thereby, this invention can prevent generation | occurrence | production of the sediment which causes water quality pollution in a culture pond, and can obtain a favorable underwater environment.

  However, even in an aquatic environment completely isolated from the soil of the aquaculture site, some kind of precipitates (leftover food, feces, waste, etc.) may be generated by the administration of feed and the life activities of the aquatic organism itself. For this reason, in the present invention, the suction of water by the pump and the filtration by the filter are performed together, and the culture pond water is circulated to maintain a good underwater environment. Thereby, the healthy cultivation of aquatic organisms can be further promoted, and the production efficiency can be improved.

  In addition, in the present invention, even if an aquaculture pond is created to grow aquatic organisms, the soil environment is not particularly adversely affected. For this reason, not only water pollution but also soil pollution can be prevented, and it is possible to stop the flow of destruction of the natural environment, which is an adverse effect of recent development of the aquaculture industry.

  In addition, water circulation shall be realized by the following configuration. That is, it installs in the state where the end of the 1st piping and the 2nd piping was sunk in the culture pond. A pump is connected to the first pipe, and water in the culture pond is pumped up through the first pipe. Further, a filter is connected to the first pipe, and the water sucked into the pump is filtered at the upstream position. Thereby, clogging of a pump etc. can be prevented with the removal of underwater sediment. Further, by providing a circulation path (another pipe) for connecting the discharge port of the pump and the second pipe, the water discharged from the pump is circulated into the culture pond through the second pipe. The filter may be of a size that captures dirt, leaves, grass leaves, branches, etc. mixed in water (for example, cloth mesh). This is because soil components (sand grains, mud, etc.) are not mixed in the water of the culture pond in the present invention.

  Moreover, the sediment removed by the filter does not contain soil components as described above, and the mass thereof is minimal. For this reason, even if the removed sediment is sprayed around the culture pond and allowed to dry naturally, the surrounding natural environment is not adversely affected. Moreover, since the water pollution of the pond water discharged at the time of harvesting of the aquatic aquaculture has hardly progressed, the environmental load on the river and the coastal water system due to the discharged water from the culture pond can be extremely reduced.

  In the aquaculture equipment of the present invention, a fine bubble generator can be installed in the middle of the circulation path for circulating water. The fine bubble generator has a capability of mixing fine bubbles into water discharged from the pump, and a device generally called “microbubble generator” or the like can be used. The “miniaturized bubbles” referred to here are, for example, bubbles refined to an average diameter of 50 μm or less. Bubbles refined to this extent have a very low ascent rate, stay in the water while circulating in the pond, and hardly rise to the surface of the water. The refined bubbles improve the dissolved oxygen (DO) concentration in water by pressure dissolution. As a result, the dissolved oxygen concentration in the culture pond can be increased by the water recirculated from the pump, and the pollutants causing cationization in the water can be neutralized and detoxified by the action of the anions.

  In particular, in the present invention, since soil components are not mixed in the water of the aquaculture pond, clogging hardly occurs even if a fine bubble generator is used, and the operation can be performed stably over a long period of time. There are advantages. In general, the “microbubble generator” has a fine internal structure in order to generate fine bubbles in the circulated water. Therefore, when a soil component (sand particles, mud, etc.) enters there, it is easy. It will cause clogging. In this respect, in the present invention, since the water component that is circulated through the fine bubble generator does not contain soil components, there is no particular concern about clogging, and it is less likely to cause troubles in daily operations, thus improving operating efficiency. be able to.

  Moreover, in the aquaculture equipment of the present invention, the following piping configuration can be adopted more practically. That is, the first three-way valve and the second three-way valve are installed in the middle of the first pipe and the second pipe, respectively. Then, the first branch pipe is branched from the first pipe at a position downstream from the first three-way valve and at an upstream position from the filter as viewed in the suction direction of the pump, and the second branch is passed through the second three-way valve. Connect to piping. Further, the second branch pipe is branched from the second pipe at a position upstream from the second three-way valve as viewed in the discharge direction of the pump, and this is connected to the first pipe through the first three-way valve.

  According to the above piping configuration, when both the three-way valves are first closed, the culture pond water is pumped up and filtered through the first piping as described above, and then filtered from the circulation path. Water can be circulated into the aquaculture pond through the two pipes. Next, when both the three-way valves are switched to the state in which the branch pipes are opened, the water flow directions in the first pipe and the second pipe are reversed, and this time, the second pipe and the second branch pipe The water in the culture pond is pumped up through and filtered, and then the water circulates in the culture pond from the circulation path through the first branch pipe and the first pipe.

  Thereby, it is possible to circulate water while appropriately switching without constantly fixing the water flow direction (the suction direction and the discharge direction by the first pipe and the second pipe) in the culture pond. Moreover, it is possible to prevent clogging of sediments in the portions serving as the suction port and the discharge port and in the piping by appropriately changing the water flow direction in each piping.

  As described above, the aquaculture facility of the present invention contributes to improving the productivity of aquatic organisms while minimizing water pollution and soil pollution. In addition, repeated use of aquaculture land over a long period of time does not have a serious adverse effect on the soil environment, so it is possible to use the aquaculture land that has been created semi-permanently. Can be used effectively. As a result, it is not necessary to abandon the aquaculture land in a short period of time, and it is possible to break a vicious circle in which turbulent development is performed in search of another new aquaculture land.

  Conventionally, the land used as aquaculture ponds has required considerable years to recover after the contamination has progressed, but the land used as aquaculture ponds in the present invention hardly contaminates. Therefore, it can be diverted to another use (for example, agricultural land) immediately after the end of use.

  Furthermore, according to the present invention, even if the land has already been contaminated and abandoned by the conventional method, it is possible to create a well-shaped aquaculture land, lay a sheet material, and store fresh water just by storing water. An aquaculture pond with an environment can be easily constructed. As a result, it is possible to reuse the currently suspended land as an aquaculture land, and it is possible to promote the revitalization of the area where the aquaculture industry has been conducted in the past.

  Further, in the present invention, in addition to daily feeding and aquatic life management work, all that is necessary is to operate the pump to circulate water and remove the sediment collected by the filter. No special dredging work is required, and the running cost can be reduced accordingly.

  Moreover, since no chemicals are used in the present invention, the natural aquatic system is not altered, and the health (no chemicals used) of the aquatic organisms cultivated can be appealed.

It is a perspective view showing roughly the whole composition of the aquaculture equipment of one embodiment. It is a vertical sectional view which shows roughly the state where water was stored in an aquaculture site and a culture pond was formed. It is a piping diagram which shows concretely the composition of the water circulation system in aquaculture equipment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view schematically showing an overall configuration of an aquaculture facility according to an embodiment. This aquaculture equipment is constructed by creating land on the land in the form of depressions to form aquaculture land 10 and laying a polymer sheet 12 so as to cover the entire surface. The aquaculture site 10 may be one that has been excavated and formed into a depression shape, or one that has an enclosure with embankment or the like on the ground and has been formed into a depression shape inside. The shape of the aquaculture land 10 is rectangular, for example, in plan view. As a result, a large number of aquaculture lands 10 (others are not shown) can be neatly partitioned and created in a land having a certain size. In addition, the size (area, culture pond volume) of the aquaculture land 10 can be appropriately adjusted in accordance with the actual situation of the land to be developed and the surrounding environment. Here, as a standard size, the area of the aquaculture land 10 is about 1000 m ² and the depth is about 2 m, for example.

  The polymer sheet 12 is a resin sheet material made of high-density polyethylene (HDPE), for example, and has a sufficient area to cover the entire surface (bottom surface and four slopes) of the aquaculture land 10 as described above. In addition, the polymer sheet 12 may have a size enough to spread around the aquaculture land 10 as shown in the figure. Moreover, about the peripheral part of the polymer sheet 12, in order to prevent the peeling | exfoliation, scattering by a wind pressure, etc., you may perform the fixed curing by the anchor bolt, anchor rope, etc. which are not shown in figure, for example.

  FIG. 1 shows a state before water is stored in the aquaculture site 10. From this state, the aquaculture land 10 can construct a culture pond by applying water from the polymer sheet 12 laid so as to cover the entire surface thereof and storing the water therein. The water filling is performed using, for example, a pump facility (not shown) from the adjacent water channel 16. In addition, a work passage 14 for performing, for example, daily feeding and maintenance management is provided outside the peripheral edge of the aquaculture land 10 and between other adjacent aquaculture land 10.

  In the present embodiment, a suitable water depth of the culture pond is assumed to be, for example, about 1.2 m to 1.5 m. This depth of water is suitable as a growth environment for aquatic organisms such as shrimps (black tiger shrimps, prawns). In addition, since the polymer sheet 12 does not need to support all the water pressure and water storage mass of a culture pond, the thickness should just be about 0.5 mm. Thereby, the cost required for the procurement of the polymer sheet 12 can be minimized.

  Moreover, since the polymer sheet 12 is made of a material having high water resistance and weather resistance, once it has been laid, it can be used semipermanently. The polymer sheet 12 is not broken to the extent that it is stepped on by an operator with daily work, and is not damaged (eated) by the life activity of aquatic organisms to be cultured.

  In the aquaculture site 10 (aquaculture pond when water is stored), for example, a corner dropping gate 18 can be installed in one section. The corner dropping gate 18 is opened to ensure that the water in the culture pond is drained to the irrigation channel 16 and the aquatic organisms cultivated are collected in the vicinity of the corner dropping gate 18 so that the harvesting work is made efficient. To help. In particular, in this embodiment, since the pond bottom is the polymer sheet 12 made of resin, aquatic organisms do not sink into the soil and are hidden, and the working efficiency at the time of harvesting is greatly improved.

  For example, two lines 20 and 22 are installed in the aquaculture site 10. Each of these pipes 20 and 22 is laid in a state where one end is submerged in the water (center of the bottom) of the aquaculture pond, and further extends from the water to the land while being bent along the bottom surface and the slope. Further, a mesh cover 24 is attached to each of the pipes 20 and 22 at the open end of the water. The mesh cover 24 prevents the aquatic organisms from entering the pipes 20 and 22, and prevents the entry of relatively large garbage (for example, a piece of wood or a tree branch).

  On the land near the aquaculture site 10 (aquaculture pond at the time of water storage), a suction path 26 and a reflux path 28 are connected to the pipes 20 and 22, respectively. A three-way valve 30 is interposed between the suction path 26 and the circulation path 28 and the pipes 20 and 22. These three-way valves 30 are connected to branch lines 32 and 34, respectively. In FIG. 1, the suction path 26, the circulation path 28, the three-way valve 30, and the branch pipes 32 and 34 are all shown in a simplified symbol shape.

  FIG. 2 is a vertical sectional view schematically showing a state in which the aquaculture pond 40 is formed by storing water in the aquaculture land 10. As described above, the culture pond 40 is formed by storing water in the culture land 10 via the polymer sheet 12. Thereby, the culture pond 40 can form an underwater environment completely isolated from the soil of the culture site 10 by the polymer sheet 12.

  In the culture pond 40, for example, a paddle type aerator 42 can be installed. As is well known, the paddle type aerator 42 rotates a water wheel (paddle) to agitate the water surface to aerate the water in the culture pond 40 or generate a water flow in the culture pond 40. As described above, since the culture pond 40 is isolated from the soil, even if the paddle type aerator 42 is operated, the soil does not erode or the soil components are sprinkled by the water flow. .

  A pump yard 50 is provided on the land in the vicinity of the culture pond 40. The suction path 26 and the circulation path 28 extend to the pump yard 50, and devices such as a pump 52, a suction filter (filter) 54, and a microbubble generator 56 are installed in the pump yard 50. Yes.

  FIG. 3 is a piping diagram specifically showing the configuration of the water circulation system in the aquaculture facility. As described above, in the aquaculture pond 40, the two systems of pipes 20 and 22 are installed in a state of being submerged in the water. A suction path 26 is connected to one pipe 20 through a three-way valve 30, and the suction filter 54 is connected to the suction path 26. The pump 52 is located downstream of the suction filter 54 and is connected to the suction filter 54 via a connection pipe 62.

In this embodiment, since a soil component does not mix in the water to be sucked up, a cloth mesh can be used for the suction filter 54. For example, a pump of the cascade type is used as the pump 52, and the suction pressure has a capacity of about 40.79 MPa (4 kgf / cm ² ). The pump 52 is provided with a compound gauge (pressure gauge) 58 and an intake needle valve 60, for example, and the operator can adjust the opening of the needle valve 60 while visually checking the pointer of the compound gauge 58. it can.

  A microbubble generator 56 is connected to the discharge side of the pump 52 via another connection pipe 64. The connection pipe 64 is attached with a compound meter 58 for measuring the discharge pressure of the pump 52. The microbubble generator 56 generates bubbles that are refined in water by the water flow discharged from the pump 52, and here, a known one can be applied. The fine bubbles to be generated are preferably those having an average diameter of 50 μm or less, for example. Such fine bubbles can be dissolved under pressure in a pressure vessel such as the microbubble generator 56, and the dissolved oxygen concentration in water can be significantly increased.

  The recirculation path 28 is connected to the outlet side of the microbubble generator 56, and a discharge control valve 66 is installed in the middle thereof. The discharge control valve 66 is, for example, a ball valve, and the discharge flow rate of the pump 52 can be adjusted according to the opening degree.

  In the above-mentioned water circulation system, a steel pipe having high pressure resistance may be used in the pump yard 50, and lightweight polyvinyl chloride pipes may be used for the pipes 20 and 22 submerged in the aquaculture pond 40.

  The operation of the water circulation path in the aquaculture facility of the present embodiment can be performed, for example, in the following two ways.

[First driving procedure]
First, the two three-way valves 30 are operated in a state where the flow toward the branch pipes 32 and 34 is closed. In this case, as shown by the black arrows in FIG. 3, the water in the culture pond 40 is sucked up through the one pipe 20 and flows into the suction path 26 through the three-way valve 30. Then, the sucked water reaches the pump 52 through the suction filter 54, and flows to the circulation path 28 through the microbubble generator 56 after being discharged. Then, the water flows from the circulation path 28 to the other pipe 22 via the three-way valve 30 and is discharged in the culture pond 40 (black arrow in FIG. 3).

[Second operation procedure]
Next, it is assumed that the two three-way valves 30 are operated in a state in which the flow toward the branch pipes 32 and 34 is opened. In this case, the insides of the two systems of pipes 20 and 22 are opened to the branch pipes 32 and 34, respectively. In this case, as indicated by the white arrow in FIG. 3, the water in the culture pond 40 is sucked up through the other pipe 22 and reaches the branch pipe 34 via the three-way valve 30 (white lines in FIG. 3). And a flow into the suction path 26 from there. Then, the sucked water reaches the pump 52 through the suction filter 54, and flows to the circulation path 28 through the microbubble generator 56 after being discharged. Then, when the water flows into the branch pipe 34 from the recirculation path 28 through the three-way valve 30 this time, it is discharged from the inside through the one pipe 20 into the aquaculture pond 40 (open arrow in FIG. 3).

  As described above, the water flow direction (suction direction, discharge direction) in the culture pond 40 is not always fixed by appropriately switching between the two operation procedures. For this reason, the water in the culture pond 40 can be circulated in various ways, and the sediment adhered to the mesh cover 24 at the time of suction can be washed away at the time of discharge to prevent clogging. In addition, clogging in the pipes 20 and 22 can be satisfactorily prevented by switching the water flow direction.

According to the aquaculture equipment of the present embodiment described above, the following excellent advantages are obtained.
(1) Since no soil components of the cultivation site 10 are mixed into the water in the culture pond 40, there is no concern about sludge generation due to the soil components.
(2) As a result, the only deposits in the water are mainly leftovers of food given to aquatic organisms and aquatic organism discharges (feces, molting shells, etc.). Decrease drastically.

(3) The sediment in the culture pond 40 is collected at the center bottom by the operation of the paddle aerator 42, sucked up by the pump 52, and collected by the suction filter 54. Since the collected sediment does not contain soil contaminants as described above, even if it is appropriately sprayed around the aquaculture site 10 and naturally dried, problems of environmental destruction and environmental burdens arise. Absent.

(4) Since the amount of dissolved oxygen (DO) is increased by the microbubble generator 56 in the water to be circulated to the culture pond 40, the dissolved oxygen concentration in the culture pond 40 can be easily maintained. Thereby, while promoting the growth of aquatic organisms, the sterilization action in water by an anion can also be improved.

(5) Since the growth of aquatic organisms is promoted by improving the aquatic environment, aquaculture can be carried out from larvae to adults (eg, juvenile shrimp to adult shrimp) in a relatively short period of time (eg, 3.5 to 4 months). it can. For this reason, the production efficiency can be improved by carrying out the aquaculture work in a short cycle.

(6) In addition, even after the aquaculture period has passed, the water in the aquaculture pond 40 has not been seriously polluted, so even if it is discharged into rivers and coastal water systems, it may cause environmental pollution. Absent.

(7) In addition to daily feeding and health management of aquatic organisms, the necessary running cost is only that required for the operation and maintenance of the pump 52.

(8) Since no chemicals are used for water quality conservation or improvement, the aquatic organisms are not damaged by drugs, and the health of the harvest (no chemicals) can be appealed to the market. . In addition, since no chemicals are used, it is possible to guarantee the safety of water discharged at harvest.

(9) Since the bottom surface of the culture pond 40 is the surface of the polymer sheet 12, even if the water is drained at the time of harvesting, aquatic organisms do not sink into the soil and hide, greatly improving the work efficiency. can do.

(10) Furthermore, since sediment such as sludge is not generated in the aquaculture pond 40 even temporarily, aquatic organisms do not sink into the sludge and become poisoned. Thereby, the soundness of the harvested aquatic organism can be maintained to the end.

  As described above, the aquaculture equipment of the present embodiment is overwhelmingly less contaminated with water and soil in the culture pond 40 than the conventional method, and can completely eliminate the problems of the conventional method. In addition, since the aquaculture land 10 and the polymer sheet 12 can be used repeatedly and semipermanently, the aquaculture industry can be permanently established in a certain area, greatly contributing to the development of the aquaculture industry, and within a short period of time. There is no vicious circle of having to abandon one land and develop another.

  Furthermore, even if the land is already exhausted by the conventional method, it can be created as the aquaculture land 10, and if a polymer sheet 12 is laid and stored in the land, it is possible to easily create a new healthy aquaculture pond 40. Can be rebuilt. This makes it possible to effectively utilize the land that is currently abandoned as fallow land and promote the revitalization of the aquaculture industry throughout the region.

  The present invention is not limited to the above-described embodiment, and can be implemented with various modifications. In one embodiment, the aquaculture land 10 has a rectangular shape in plan view, but may have other shapes (circular, polygon other than rectangular). Moreover, although the polymer sheet 12 made of high-density polyethylene is given as an example of the sheet material, other materials can be used for the sheet material.

  The arrangement of the pipes 20 and 22 constituting the water circulation system is merely an example including the illustrated one, and the arrangement may be changed as appropriate, or the number of pipes to be installed may be increased.

  In one embodiment, shrimp is taken as an example of aquatic organisms, but the aquaculture equipment of the present invention is also applicable to aquaculture of various aquatic organisms (seafood).

10 Aquaculture land 12 Polymer sheet 14 Work channel 16 Water channel 18 Corner drop gates 20 and 22 Piping (first and second piping)
24 mesh cover 26 suction path 28 recirculation path 30 three-way valve 32, 34 branch piping (first and second branch piping)
40 Aquaculture Pond 42 Paddle Aerator 50 Pump Yard 52 Pump 54 Suction Filter (Filter)
56 Micro Bubble Generator (Micro Bubble Generator)

Claims (3)

An aquaculture land that has a hollow shape built on land,
A sheet material laid in a state covering the entire surface of the aquaculture site;
An aquaculture pond that forms an underwater environment isolated from the soil of the aquaculture site by storing water in the aquaculture site via the sheet material;
A first pipe and a second pipe installed in the aquaculture pond;
A pump for sucking water in the aquaculture pond through the first pipe;
A filter that is connected to the first pipe and filters water sucked into the pump at an upstream position thereof;
An aquatic aquaculture facility comprising: a discharge port of the pump and the second pipe; and a circulation path for circulating water discharged from the pump through the second pipe into the culture pond. The aquatic aquaculture facility according to claim 1,
An aquatic aquaculture facility further provided with a fine bubble generator that is installed in the middle of the circulation path and mixes fine bubbles into the water discharged from the pump. In the aquatic aquaculture facility according to claim 1 or 2,
A first three-way valve and a second three-way valve respectively installed in the middle of the first pipe and the second pipe;
Branched from the first pipe at a position downstream from the first three-way valve and upstream from the filter as viewed in the suction direction of the pump, and connected to the second pipe through the second three-way valve. A first branch pipe,
A second branch pipe branched from the second pipe at a position upstream from the second three-way valve as viewed in the discharge direction of the pump and connected to the first pipe through the first three-way valve; Aquaculture equipment provided.

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