JP2014054195A - Land culture system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a closed-circulation type land culture system retaining a good water quality of sea water for preventing damage of pest, virus, and the like, being economical, and having a high popularization property.SOLUTION: A land culture system 1 comprises, on land: a breeding tank 10 for breeding swimming fishes; a cleaning tank 20 for breeding the annelida and cleaning the seawater from the breeding tank 10; a mineral supply tank 30 for supplying the seawater with mineral; and the like, so as to form a closed circulation system. In the cleaning tank 20, residual feed and excretory substances contained in the seawater are eaten by the annelid, and further decomposed by plankton proliferated with the breeding of the annelid and by proliferated aerobic bacteria, so that the seawater is cleaned. In the mineral supply tank 30, the mineral is dissolved from stored mineral dissolution ores 31 to the sea water.

Description

  The present invention relates to a terrestrial aquaculture system that cultivates seafood by circulating seawater in a closed circulation system provided on land, and in particular, self-circulation type that purifies seawater by marine organisms and the like without supplying and discharging seawater. Related to closed-system terrestrial aquaculture systems.

  Traditionally, the mainstream of seafood aquaculture equipment is the sea surface aquaculture method in which ginger nets are installed in the gulf sea area to breed seafood. Since this aquaculture method uses the natural coast, it is not uncommon for it to be affected by natural disasters such as typhoons or to be damaged by red tides.

  In addition, since sea surface aquaculture methods administer chemical substances such as antibiotics and disinfectant formalin to combat pests and viral infections, seafood cultured in such an environment is completely concerned about safety. There is a part that cannot be asserted that it is a non-food ingredient.

  For these reasons, the sea surface aquaculture method has a problem that it is difficult to stably produce safe and high-quality seafood. Moreover, since the surrounding sea area may be polluted by the administration of food, it also includes problems to be solved in terms of the environment.

  As an aquaculture method different from the sea surface aquaculture, there is an aquaculture method that cultivates flounder, fugu, abalone, etc. on land. According to this land culture method, the impact of natural disasters can be reduced compared to the sea surface culture method, and damage due to red tides and the like can be avoided.

  However, this land-based aquaculture method has a problem in that it requires a large amount of energy cost because it must supply natural seawater to land-based aquaculture facilities and discharge waste products to the ocean along with residual feed. . In addition, environmental problems caused by residual food and wastes discharged into the ocean cannot be solved. Particularly for seafood that requires temperature control of seawater, there is a problem that economic efficiency is remarkable.

  In recent years, some terrestrial aquaculture techniques have been found in which the aquaculture system is configured to form a circulation system. That is, it is a method of circulating seawater in the system without supplying seawater to the aquaculture system or discharging seawater from the aquaculture system. However, in such an aquaculture system, the ammonia in seafood excrement accumulates in seawater and increases the ammonia concentration, thereby preventing the cultivation of seafood by generating hydrogen sulfide. There was a problem that there was.

  There is an onshore culture system proposed in Patent Document 1 as a technique for solving the problems of the onshore culture system that forms this circulation system. That is, a rearing tank for rearing seafood, a removal device equipped with a rotary filter for removing solid excrement of fish and seafood, residual bait, etc., and an active water tank equipped with an activator for activating water, A closed system circulation system is composed of a purified water tank for purifying seawater by aerobic bacteria.

JP 2004-016168 A

  However, the land culture system described in Patent Document 1 is provided with a physical filtration device called a removal device to remove solid excrement of fish and shellfish, residual food, etc. was there.

  Also, from the viewpoint of food resource self-sufficiency in Japan today and the expansion of the seafood market in China, Western countries, etc., we will nurture efficient and economically safe and secure marine resources for the fishing industry Improving the weight of fisheries is urgent.

  The present invention has been made paying attention to such problems of the prior art, and maintains the quality of seawater in a high quality state to prevent damage from pests, viruses, etc., and is economical and popular. The purpose is to provide a highly closed circulatory aquaculture system.

The gist of the present invention for achieving the object lies in the inventions of the following items.
[1] In an aquaculture system (1) for culturing seafood by circulating seawater in a closed circulation system on land,
In the closed circulatory system, a breeding tank (10) for breeding swimming fish, a clarification tank (20) for breeding an annelid and purifying seawater from the breeding tank (10), and supplying minerals to the seawater A mineral supply tank (30) for,
The septic tank (20) is an aerobic bacterium that has proliferated with plankton that proliferates as the annulus animal feeds the bait and excrement contained in the seawater from the breeding tank (10) and grows as the annulus animal is raised. And decomposes residual food and excrement to purify seawater,
The mineral supply tank (30) contains a mineral-eluting mineral (31) containing a desired mineral, and the mineral is eluted from the mineral-eluting mineral (31) into seawater. Aquaculture system (1).

[2] In an aquaculture system (1) for culturing seafood by circulating seawater in a closed circulation system on land,
In the closed circulatory system, a breeding tank (10) for raising swimming fish, a septic tank for raising at least one of crustaceans and shellfish and an annelid and purifying seawater from the breeding tank (10) (20), a mineral supply tank (30) for supplying minerals to seawater, and an iron ion compound supply means (40) for supplying iron ion compounds to seawater,
The septic tank (20) feeds at least one of the crustaceans and shellfish and the annelid and feeds the residual food and excrement contained in the seawater from the breeding tank (10) and raises the annular animal. The plankton that proliferates along with the aerobic bacteria that propagated decomposes residual food and excreta, purifying seawater,
The mineral supply tank (30) contains the desired mineral-eluting mineral (31), and the mineral elutes from the mineral-eluting mineral (31) to seawater,
The terrestrial aquaculture system (1), wherein the iron ion compound supply means (40) supplies a solution containing at least humic acid and fulvic acid-containing nutrients as iron humate and fulvic acid. .

[3] The septic tank (20) includes an artificial hole material (22A) for breeding an annelid arranged at the bottom, and a lightweight highly water-permeable member (21A) placed on the artificial hole material (22A). ) The aquaculture system (1) according to item [1] or [2].

[4] A net member (23) stretched above the bottom surface (12) of the bottom of the septic tank (20),
The artificial hole material (22A) is formed by laminating concavo-convex plates and flat plates alternately to form a plurality of layers so as to form a large number of inclined artificial holes (22b), and the artificial holes (22b) Is placed on the net member (23) so as to incline in the vertical direction, the land farming system (1) according to item [3].

[5] The aquaculture system (1) according to item [1], [2], [3] or [4], wherein the annelid contains at least rock isome.

[6] The rearing tank (10) has a drain port (11) at the bottom, and the bottom surface is inclined downward toward the drain port (11),
Sprinkling means (13) disposed above the drainage port (11) and on the surface of the water and sprinkling while rotating by the reaction force of the fountain, rotating in water in conjunction with the sprinkling means (13), Terms [1], [2], [3], [4] or [4] are provided, further comprising convection generating means (15) for generating convection directed upward from the drain outlet (11) side. 5] The land culture system (1).

[7] The items [1], [2], [3], [4], [4], wherein the closed circulation system is provided with a radioactive substance filtration tank (70) for filtering radioactive substances. The land culture system (1) according to [5] or [6].

The present invention operates as follows.
The terrestrial aquaculture system (1) can cultivate seafood by purifying seawater and circulating it in a closed system without regularly supplying and discharging seawater. The circulation of seawater flows from the breeding tank (10) for breeding swimming fish to the septic tank (20) for breeding annelids and purifying seawater, and for supplying minerals to the seawater from the septic tank (20). It returns to a breeding tank (10) through a mineral supply tank (30).

  Residual food and excrement generated in the breeding tank (10) flow to the septic tank (20) together with seawater. The residual food and excrement carried to the septic tank (20) are decomposed by plankton that are fed by the annelids and proliferated with the breeding of the annelids, and the aerobic bacteria that have propagated. Thereby, seawater is purified.

  Seawater purified in the septic tank (20) reaches the mineral supply tank (30). In the mineral supply tank (30), the mineral elutes from the contained mineral eluting mineral (31) into the seawater.

  Further, an iron ion compound supply means (40) for supplying an iron ion compound to seawater is provided, and the iron ion compound supply means (40) contains at least humic acid and fulvic acid as iron humate and iron fulvic acid. By supplying a solution containing nutrient salts into seawater, algae can be proliferated, which can serve as plankton and shellfish food and promote the growth of seafood and annelids.

  In the septic tank (20), at least one of crustaceans and shellfish may be reared together with the annelid. In this case, the remaining food carried from the rearing tank (10) is also transferred to the shellfish and shellfish. Since it eats, it can purify seawater better.

  Further, the septic tank (20) includes an artificial hole material (22A) for breeding an annelid arranged at the bottom, and a lightweight highly permeable member (21A) placed on the artificial hole material (22A). As an artificial hole material (22A) in which a large number of inclined artificial holes (22b) are formed, an uneven plate and a flat plate are alternately formed into a plurality of layers. By laminating them, the effect of sedimentation and filtration of the solid content is great, and the total length of the artificial hole (22b) can be increased, so that an annelid can be grown longer. The artificial hole material (22A) smoothes the flow of seawater in the septic tank (20) by placing it on the net member (23) stretched above the bottom surface of the bottom of the septic tank (20). Can do.

Annelids should contain at least rock isomers. By breeding rock isome, a large amount of plankton can be grown by an enzyme derived from the rock isome.
In the case where the closed circulation system is equipped with a radioactive substance filtration tank (70), fish and shellfish contaminated with radioactive substances adsorb radioactive substances discharged from metabolic organs such as gills into seawater in the closed circulation system. Can be removed.

  The breeding tank (10) is provided with a drainage port (11) at the bottom, and the bottom surface of the breeding tank is inclined downward toward the drainage port (11), above the drainage port (11) and on the water surface. Sprinkling means (13) arranged and rotated by reaction force from the fountain, and convection generation for rotating in water in conjunction with the sprinkling means (13) and generating upward convection from the drain port (11) Means (15) may be provided. Thereby, the residual feed and excrement produced in the breeding tank (10) are carried to the downstream septic tank (20) without staying. Further, since the convection generating means (15) is driven by the water sprinkling means (13) rotated by the fountain, it is not necessary to separately provide power means for driving the convection generating means (15). Cost can be reduced and it is economical.

  According to the onshore aquaculture system (1) according to the present invention, while maintaining the quality of the seawater in a high quality state without replacing the seawater on the land, while preventing damage from pests, viruses, etc., the ring shape in addition to the fish Since animals, even crustaceans and shellfish can be cultivated simultaneously, they can be cultivated economically.

  In addition, it is possible to promote the growth of seafood and annelids by supplying minerals into the seawater from the mineral supply tank and supplying the iron ion compounds into the seawater using the iron ion compound supply means. It becomes economical.

  Also, in the case of having watering means for sprinkling while rotating by fountain seawater, the convection generating means convects the seawater in the breeding tank in conjunction with the rotation, so that the power means for driving the convection generating means Need not be provided separately, and the cost can be reduced accordingly.

  Moreover, since the facility is laid on land, the aquaculture facility is more popular than sea surface aquaculture where the sea surface is located.

It is explanatory drawing which shows the land culture system which concerns on one embodiment of this invention. It is explanatory drawing explaining the biofiltration layer in FIG.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory diagram showing a land farming system according to an embodiment of the present invention. FIG. 2 is an explanatory diagram for explaining the biofiltration layer in FIG. 1.
The on-shore aquaculture system 1 according to the present embodiment shown in FIG. 1 is a self-circulating type that lays on land and circulates seawater in a closed circulation system to cultivate swimming fish, crustaceans, shellfish, annelids, etc. It is composed.

  The terrestrial aquaculture system 1 cultivates a breeding tank 10 for growing swimming fish, at least one of crustaceans and shellfish, and an annelid along the direction in which the seawater circulates, and seawater from the breeding tank 10. A purification tank 20 for purifying water, a mineral supply tank 30 for supplying minerals to seawater, and an iron ion compound supply means 40 for supplying iron ion compounds to seawater are disposed.

  The breeding tank 10 has a drain port 11 formed at the bottom. The bottom surface 12 of the breeding tank 10 is inclined downward toward the drain port 11. Therefore, the remaining food and the excrement of the fish being raised are transported to the next septic tank 20 by the seawater flowing out from the drain port 11, and therefore do not stay in the breeding tank 10. In the example shown in FIG. 1, the drain port 11 is provided at the center of the bottom, but the position of the drain port 11 does not have to be at the center of the bottom.

  Near the bottom and above the drainage port 11 is an air diffuser 51 for scattering oxygen or air from the blower B connected to the oxygen generator 50 installed outside the breeding tank 10 into the seawater of the breeding tank 10. The terminal part of this is arrange | positioned, and it diffuses in the seawater from the terminal part of this diffuser pipe 51. FIG. From the blower B, oxygen or air generated by the oxygen generator 50 is diffused as necessary.

  Above the drain port 11 and on the water surface, water sprinkling means 13 for sprinkling water while rotating by a reaction force generated by fountaining the circulating sea water is disposed. The water sprinkling means 13 has a rotating shaft 13a that is rotatably supported and a plurality of water sprinkling pipes 13b that extend from the 13a in a substantially horizontal direction. The water spray pipe 13b extends radially from the rotary shaft 13a.

  The rotating shaft 13 a extends substantially vertically above the drain port 11. Each of the plurality of water spray pipes 13b is provided with a plurality of water spray ports (not shown) from the base portion near the rotating shaft 13a to the tip portion. The sprinkling holes drilled in each sprinkling pipe 13b are the same at the same position in each sprinkling pipe 13b so that the sprinkling pipe 13b rotates in one direction by the reaction force when seawater is ejected from the sprinkling spout. It is drilled in the direction.

  Water pressure is applied to the sprinkling means 13 by the water supply pump 106 which will be described later. Therefore, seawater is fountained vigorously from the sprinkler 13b.

  A float 14 is attached to the rotating shaft 13a below the sprinkling pipe 13b. The water spray means 13 can be kept floating on the seawater surface by the float 14.

  A blade 15 located in the seawater below the float 14 is further attached to the rotary shaft 13a. This blade 15 is for generating convection in the seawater in the breeding tank 10, and rotates in the same direction as the rotation direction of the water spray pipe 13b. The blade 15 is formed in a shape such that when it rotates, seawater generates convection upward from the drain outlet 11 side. As a result, the seawater in the breeding tank 10 is directed upward from the drainage port 11 side, toward the side wall of the breeding tank 10 near the water surface, directed downward near the side wall, and directed to the drainage port 11 near the bottom surface 12 inclined downward. It becomes a convection heading.

  The breeding tank 10 has a temperature adjusting heater 16 and a temperature adjusting cooler 17 attached to a part of the inner side wall. The temperature adjusting heater 16 and the temperature adjusting cooler 17 are controlled by a control device (not shown). Thereby, the seawater in the breeding tank 10 is maintained and managed at an appropriate temperature according to the type of fish to be reared there and the breeding amount. As the temperature adjusting heater 16 and the temperature adjusting cooler 17, it is preferable to select a device that can reduce the energy cost, including a heat pump system.

  One end of a water pipe 101 for sending seawater to the downstream septic tank 20 is connected to the drain port 11 of the breeding tank 10. In the middle of the water pipe 101, a circulation pump 102 for sending seawater from the rearing tank 10 side to the septic tank 20 side is provided.

  A water spray pipe 103 is connected to the other end of the water pipe 101. The water sprinkling pipe 103 is extended above the septic tank 20, and a large number of sprinkling ports (not shown) for sprinkling seawater toward the septic tank 20 are drilled. Further, a water pipe 108 branched from a water pipe 107 to be described later is provided in the septic tank 20. A branch valve 109 is provided in the water pipe 108, and seawater can be supplied from the water pipe 108 to the septic tank 20 by operating the branch valve 109.

  The septic tank 20 includes a biological filtration layer that filters seawater with organisms. This biological filtration layer includes a submarine animal breeding layer 21 for breeding marine marine animals such as crustaceans, shellfish and sea cucumbers, and an annelid breeding layer 22 for breeding annulus animals such as rock isome. ing. The submarine animal breeding layer 21 is provided on the annelid breeding layer 22.

  The biological filtration layer is provided so as to cover substantially the entire inside of the septic tank 20, but is provided so as to secure a gap between the bottom and the bottom and a part of the side wall.

  In the septic tank 20, a support net 23 is stretched facing the bottom in order to ensure a gap 200 between which the seawater flows well between the bottom and the annelid breeding layer 22. A biological filtration layer is placed on the support net 23. Therefore, the support net 23 is made of a material capable of supporting the weight of the biofiltration layer, such as metal or industrial plastic.

  The annulus animal breeding layer 22 placed on the support net 23 is composed of an artificial hole material 22A in which an uneven plate and a flat plate are alternately laminated so as to form a plurality of layers. As shown in FIG. 2, the artificial hole material 22 </ b> A has many artificial holes 22 b that are inclined in the vertical direction when placed on the support net 23.

  In FIG. 1, the artificial hole 22b is shown to extend in a substantially vertical direction, but that may be used. However, many advantages can be obtained when the artificial hole 22b extends at an angle rather than extending substantially vertically. That is, since the inclined artificial hole 22b has a longer overall length than that extending in the vertical direction, the area in which the solid in the seawater is deposited on the inner wall of the artificial hole 22b is increased, and the function of physically filtering the seawater is provided. improves.

  In the artificial hole 22b, an annelid animal lives therein as a burrow. The annulus animal gives out a viscous substance, so that a mucous membrane is formed on the inner wall surface of the artificial hole 22b. Due to this mucous membrane, more solid matter in the seawater adheres to the inner wall surface of the artificial hole 22b. Therefore, the increase in the inner wall area of the artificial hole 22b improves the physical filtration effect accordingly. In addition, the fact that the total length of the artificial hole 22b is long can increase the size of the annulus animal, which is also advantageous in terms of the cultivation of the annulus animal itself.

  Such an artificial hole material 22A is formed by laminating an uneven plate and a flat plate alternately so as to form a plurality of layers. Therefore, the artificial hole material 22A is easy to manufacture, and when shipping an annelid, Can be removed without damaging the annelid. The inclination of the artificial hole 22b is preferably set to an inclination angle θ of about 50 ° with respect to the horizontal direction.

  A net 24 is laid on the artificial hole material 22A, and a seabed inhabiting animal breeding layer 21 is placed thereon. The seabed inhabiting animal breeding layer 21 is made of a lightweight and highly permeable material. For example, rock wool 21A. Crustaceans, shellfish, sea cucumbers, etc. are released and raised on this rock wool 21A.

  Aerobic bacteria mainly inhabit the seabed inhabited animal breeding layer 21. Also, green grass, algae, seaweed, etc. that perform photosynthesis are grown on the upper surface of the submarine animal breeding layer 21 to incorporate nitrogen, phosphorus, and other components and CO2 from the seawater, thereby bringing oxygen into the seawater. Can be generated. In addition, these green grasses, small animals, and planktons serve as food for shellfish to be cultivated.

  In such a septic tank 20, crustaceans and shellfish anemones feed on residual food and excrement contained in seawater from the breeding tank 10. Therefore, the seawater is purified accordingly. Furthermore, since the enzyme is produced from the rock isome reared in the annelid breeding layer 22 and the plankton grows by the action of the enzyme, the seawater is further purified by the decomposition of the residual feed and excrement by the plankton. Furthermore, since aerobic bacteria also propagate, decomposition of residual food and excrement by aerobic bacteria is also performed, and further seawater purification is achieved.

  A drain port 104 is formed at the bottom of the septic tank 20. A water pipe 105 for sending seawater to the downstream mineral supply tank 30 is connected to the drain port 104.

  The mineral supply tank 30 is for adding a mineral to seawater. The mineral supply tank 30 stores a mineral-eluting mineral 31 containing a desired mineral, and the mineral gradually elutes from the mineral-eluting mineral 31 into seawater.

  The mineral supply tank 30 is supplied with a solution containing nutrient salts containing at least humic acid and fulvic acid as iron humate and fulvic acid from the iron ion compound supplying means 40. Various marine organisms cultivated in the land culture system 1 can be bred with good health and good growth by using purified seawater containing these minerals and iron ion compounds.

  One end of a water pipe 107 for returning seawater to the breeding tank 10 is connected to the bottom of the mineral supply tank 30. A water supply pump 106 for sending seawater from the mineral supply tank 30 is attached to the water pipe 107.

  In a closed circulation system water pipe, for example, the water pipe 107, a radioactive substance filtering unit 70 is provided. In the radioactive substance filtering unit 70, a material that adsorbs a radioactive substance such as zeolite is used as a filter medium. As an example of the case where seawater in a closed circulation system is contaminated, there is a case where fish and shellfish contaminated with radioactive substances are put into the land culture system 1. Radioactive substances are discharged into seawater from metabolic organs such as fish and shellfish contaminated with radioactive substances. The radioactive substance discharged into the seawater in this way is adsorbed and removed by the radioactive substance filtering unit 70. Thereby, the radioactive contamination of the seawater of a closed circulation system can be prevented. Moreover, radioactive substances are reduced and removed from the fish and shellfish in the breeding tank 10 and the septic tank 20.

  The other end of the water pipe 107 is connected to the watering means 13 provided in the breeding tank 10, and purified and nutrient-rich seawater is sprinkled from the watering pipe 13 b of the watering means 13 to the breeding tank 10. Further, as described above, the water pipe 108 is branched in the middle of the water pipe 107, and the purified and nutritious sea can be supplied with water to the septic tank 20 by operating the branch valve 109.

  A pH adjusting solution can be added to the septic tank 20 from the pH adjusting means 60 in order to adjust the pH of the seawater to a preferred value (about 8.0 to 8.4). The pH adjusting solution is, for example, a sodium bicarbonate solution. Further, the pH adjusting means 60 may be an electrolyzer instead of adding sodium bicarbonate, and may add sodium hypochlorite generated by electrolyzing seawater.

  When the ability to purify seawater decreases, the pH in seawater decreases, and as a result, dissolved oxygen in seawater decreases. Such a situation can be prevented by adding a pH adjusting solution by the pH adjusting means 60.

Next, the operation will be described.
The terrestrial aquaculture system 1 does not need to regularly supply and discharge seawater, and can cultivate seafood, ring animals and the like by circulating it in a closed system while purifying the seawater. In the terrestrial aquaculture system 1, the seawater flows through the water pipes 10, 105, 107, etc., and circulates in the breeding tank 10 → the septic tank 20 → the mineral supply tank 30 → the breeding tank 10. Further, the seawater from the mineral supply tank 30 can be supplied to the septic tank 20 through the water pipe 107 branched from the water supply pump 106.

  In the circulation path of the land culture system 1, water is supplied by two pumps, a circulation pump 102 provided in the water pipe 101 and a water supply pump 106 provided in the water pipe 107.

  In the breeding tank 10, the seawater is spouted from the sprinkling pipe 13b, and the sprinkling pipe 13b is rotated by the reaction force. At the same time, the blade 15 rotates in the same direction as the rotation direction of the water spray pipe 13b. When the blade 15 rotates, the seawater below it moves toward the blade 15. In the illustrated example, since the drainage port 11 is below the blade 15, the seawater is convection upward from the drainage port 11. The seawater that reaches the blade 15 goes to the side wall of the breeding tank 10 and goes downward near the side wall. Furthermore, the seawater that has reached the vicinity of the bottom flows along the downward slope of the bottom surface 12. Since the drain port 11 is provided at the lowest position of the bottom and the blade 15 is positioned above the drain port 11, the seawater flows toward the drain port 11.

  Thus, since the convection generating means 15 is driven by using the water sprinkling means 13 rotated by the fountain as a power source, it is not necessary to separately provide the power means for driving the convection generating means 15. Therefore, the cost can be reduced accordingly.

  Since the oxygen or air sent from the blower B is supplied from the end of the air diffuser 51 located between the drain port 11 and the blade 15, the concentration of dissolved oxygen is increased.

  Since the swimming fish are bred in the breeding tank 10, the excreta and the solid content of the remaining food move on the convection. Since solids of excrement and residual food are heavier than seawater, they are collected in the drain outlet 11 along the inclination of the bottom surface 12. Residual food and excrement collected at the drain port 11 are discharged from the breeding tank 10 to the water pipe 101 together with seawater passing through the water pipe 101 without staying there.

  Seawater in the breeding tank 10 is actively fed by the circulation pump 102 and sprinkled on the water surface of the septic tank 20 from the sprinkler pipe 103 connected to the end of the water pipe 101 on the septic tank 20 side. At this time, the remaining feed and excrement from the breeding tank 10 are also widely spread to the septic tank 20.

  The residual food and excrement carried to the septic tank 20 are eaten by the seabed inhabited animal breeding layer 21 and the crustaceans, shellfish and the like that are raised thereon. In addition, the annulus animals bred in the annulus animal breeding layer 22 also feed on the excrement and residual food in the septic tank 20 including the residual food and their excretion administered to the crustaceans and shellfish. Furthermore, plankton that proliferates with the breeding of annelids and aerobic bacteria that mainly propagate on rock wool 21A decompose residual food and excreta. Furthermore, plankton and aerobic bacteria digest the shells that shellfish have molted during the growth process. In this way, various organisms coexist in the annelid breeding layer 22 and an environment such as a natural coastline / tidal flat is formed.

  The seawater purified in the septic tank 20 in this manner exits the septic tank 20 from the drain port 104 and reaches the mineral supply tank 30 through the water pipe 105. In the mineral supply tank 30, minerals melt from the contained mineral-eluting mineral 31 into seawater. The mineral-eluting mineral 31 is preferably one that elutes phosphate, for example, one containing oyster shells or coral sand, or artificial ceramic made from quartz granite.

  In this mineral supply tank 30, a solution containing at least humic acid and fulvic acid containing nutrient salts as humic acid and fulvic acid is supplied from the iron ion compound supplying means 40 for supplying iron ion compound to seawater. The Thus, the seawater to which minerals and iron ion compounds are added in the mineral supply tank 30 can promote the growth of algae and promote the growth of seafood and annelids.

  Seawater in the mineral supply tank 30 is fed by the water supply pump 106 through the water pipe 107 to the watering means 13 or the septic tank 20 on the breeding tank 10 side. When water is supplied to the septic tank 20, the branch valve 109 provided in the water pipe 107 may be operated to send seawater to the water pipe 108 branched from the water pipe 107.

  As described above, the land farming system 1 circulates seawater in a closed circulation system, and convects seawater in the breeding tank 10 by using a reaction force when the circulating seawater is sprayed into the breeding tank 10. As a result, there is no need for a dedicated power source or mechanism for causing convection, and the aquaculture system is economical due to omission of equipment and low energy effects.

  In addition, while aquaculture of a variety of seafood, the remaining food and excrement are treated with annulus animals that are cultivated at the same time and aerobic bacteria that are mainly cultivated in the septic tank 20, so that the seawater is purified. There is no need for physical filtration equipment, and this is an economical aquaculture system.

  In addition, the land farming system 1 is environmentally friendly because it does not cause environmental pollution associated with sea surface aquaculture, and since the facility is located on land, there are fewer limitations on the location of facilities compared to sea surface aquaculture, and thus the spread is high.

  Also. The radioactive substance filtering unit is not limited to the illustrated position, and may be provided anywhere in the closed circulation system.

  The land-based aquaculture system according to the present invention can cultivate freshwater organisms and marine organisms at the same time, such as freshwater fish and marine fish, by using nanowater instead of seawater, and can be widely applied to aquaculture. it can.

B ... Blower 1 ... Land culture system 10 ... Breeding tank 11 ... Drainage port 12 ... Bottom 13 ... Sprinkling means 13a ... Rotating shaft 13b ... Sprinkling pipe 14 ... Float 15 ... Blade 16 ... Heater for temperature adjustment 17 ... Cooler for temperature adjustment 20 ... Purification tank 21 ... Submarine animal rearing layer 21A ... Rock wool 22 ... Annelid rearing layer 22A ... Artificial hole material 22b ... Artificial hole 23 ... Support net 24 ... Net 30 ... Mineral supply tank 31 ... Mineral elution mineral 40 ... Iron ion compound Supply means 50 ... Oxygen generator 51 ... Aeration pipe 60 ... pH adjusting means 70 ... Radioactive material filtering unit 101 ... Water pipe 102 ... Circulating pump 103 ... Water sprinkling pipe 104 ... Drain port 105 ... Water pipe 106 ... Water feed pump 107 ... Water pipe 108 ... Water pipe 109 ... Branch valve 200 ... Gap

Claims (7)

In an aquaculture system that cultivates seafood by circulating seawater in a closed circulation system on land,
The closed circulatory system includes a breeding tank for breeding swimming fish, a purification tank for breeding annelids and purifying seawater from the breeding tank, and a mineral supply tank for supplying minerals to seawater. ,
The septic tank is fed with residual food and excrement contained in seawater from the breeding tank, and the plankton that proliferates with the breeding of the annular animal and the aerobic bacteria that have propagated are fed and excreted. Which decomposes things and purifies seawater,
The aquaculture system, wherein the mineral supply tank contains a mineral-eluting mineral containing a desired mineral, and the mineral is eluted from the mineral-eluting mineral into seawater. In an aquaculture system that cultivates seafood by circulating seawater in a closed circulation system on land,
In the closed circulatory system, a breeding tank for raising swimming fish, a septic tank for breeding at least one of crustaceans and shellfish and an annelid and purifying seawater from the breeding tank, and minerals in the seawater A mineral supply tank for supplying, and an iron ion compound supply means for supplying iron ion compound to seawater,
The septic tank is a plankton that feeds at least one of the crustaceans and shellfish and the annelids with residual food and excreta contained in the seawater from the breeding tanks and proliferates as the annulus animals are raised. And the aerobic bacteria that have propagated decompose the residual food and excrement and purify the seawater.
The mineral supply tank contains a desired mineral-eluting mineral, and the mineral elutes into seawater from the mineral-eluting mineral,
The terrestrial aquaculture system, wherein the iron ion compound supply means supplies at least a solution containing nutrient salts containing humic acid and fulvic acid as iron humate and fulvic acid.   The said septic tank is equipped with the artificial hole material for breeding the ring-shaped animal arrange | positioned in the bottom part, and the lightweight highly water-permeable member mounted on this artificial hole material, The Claim 1 or 2 characterized by the above-mentioned. The listed aquaculture system. A net member stretched above the bottom surface of the bottom of the septic tank,
The artificial hole material is formed by laminating concavo-convex plates and flat plates alternately to form a plurality of layers so as to form a large number of inclined artificial holes, and the artificial holes are inclined in the vertical direction. The land culture system according to claim 3, wherein the land culture system is placed on a net member.   The terrestrial aquaculture system according to claim 1, 2, 3, or 4, wherein the annelid contains at least rock isome. The breeding tank has a drain outlet at the bottom, and the bottom surface is inclined downward toward the drain outlet,
Sprinkling means that is disposed above the water outlet and on the water surface and sprinkles while rotating by the reaction force of the fountain, and convection that rotates in water in conjunction with the water sprinkling means and directs the seawater upward from the water outlet side 6. A terrestrial aquaculture system according to claim 1, further comprising convection generating means for generating   The land culture system according to claim 1, 2, 3, 4, 5 or 6, wherein the closed circulation system is provided with a radioactive substance filtration tank for filtering radioactive substances.

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