JP6092454B1 - Closed circulation aquaculture system - Google Patents

Abstract

A closed circulation aquaculture system that suppresses the growth (reproduction) of bacteria and has a dissolved oxygen amount close to saturation in the entire area of a breeding aquarium. A pump and a nozzle for sending water containing fine bubbles toward a corner facing one corner of a rectangular breeding water tank are arranged, and a water flow from the nozzle is placed in the vicinity of the facing corner. A paddle mixer that sends out water flow along each side forming the opposite corners and takes air into the water is disposed, and further, antibacterial members having nano silver particles supported on the surface of the porous member are disposed in the water tank at predetermined intervals. It is supported by hanging or accommodated in a filtration part arranged on the upstream side of the nozzle. [Selection] Figure 1

Description

  The present invention relates to a closed circulation aquaculture system that cultivates shrimp and the like in a breeding aquarium while circulating and reusing water on land.

  The closed-circulation aquaculture system is less affected by external factors such as climate and red tide, is highly productive, and can adjust the water temperature to shorten the cultivation period. It has developed in recent years because it has the advantage of being less affected and not subject to restrictions on fishery laws such as parcel fishery rights.

  For example, in Patent Document 1, as a closed-circulation aquaculture system that removes nitrogen components such as ammonia in seawater while circulating seawater, a physical filtration unit that removes solids in seawater and an activity obtained by electrolyzing seawater An electrolysis / nitrogen removal unit that generates chlorine species and removes nitrogen components in seawater with this active chlorine species, and a chlorine neutralization unit that neutralizes active chlorine species in this order along the flow direction of seawater Arrangements have been proposed.

  Patent Document 2 proposes a closed circulation type aquaculture system in which a plurality of aquaculture pipes of a predetermined length are connected to form a circulation path, and an observation window is provided to observe the state in the aquaculture pipe. Yes.

Patent Document 3 proposes an on-shore aquaculture facility for culturing fish and shellfish that includes a physical purification processing means, a biological purification processing means, a chemical purification processing means, and an electrochemical purification processing means.
Patent Document 4 proposes a bio-fatigue recovery method using nanobubbles that recovers fatigue of a living body by bringing water containing nanobubbles into contact with the surface of the living body.

  Patent Document 5 proposes a micronization method in which the foaming / condensation process is repeated a plurality of times. In this micronization method, water is brought into contact with the nanosilver particles supported on the ceramic surface, whereby the zeta held by the nanosilver particles is retained. It describes that fungi and algae are destroyed and removed by electric potential.

JP 2003-27496 A JP 2005-021142 A JP 2014-209899 A JP 2007-045455 A JP 2014-198333 A

  A problem with the closed circulation aquaculture system is that if the virus or fish disease is brought into the breeding aquarium, the farmed fish will be destroyed. However, in the contents proposed in any of the above-mentioned prior literatures, no proposal has been made for effectively solving such annihilation of domestic fish.

  In order to solve the above problems, the closed circulation type aquaculture system according to the first invention of the present application sends water containing fine bubbles toward one corner of a breeding aquarium having a rectangular shape in plan view. A pump and a nozzle are arranged, and a paddle mixer that sends out the water flow from the nozzle as a water flow along each side forming the opposing corner and takes air into the water is arranged in the vicinity of the opposing corner, and further has a porous structure. An antibacterial member having nano silver particles supported on the surface of the material member was suspended and supported in the water tank at predetermined intervals.

  Moreover, the closed circulation culture system which concerns on 2nd invention of this application arrange | positions the filtration part in the upstream of the nozzle of 1st invention, and accommodates the porous member by which nano silver particle was carry | supported in the surface in this filtration part I did it.

  According to the closed-circulation aquaculture system according to the present invention, a water flow without stagnant portions is formed, so that the water reliably comes into contact with the nano silver particles supported on the surface of the porous member, and fungi and algae are destroyed / It is very unlikely that it will be removed and the farmed fish will be destroyed.

  The water that is ejected from the nozzle to form a water flow contains bubbles of various sizes such as nm-sized bubbles, μm-sized bubbles, and mm-sized bubbles. It becomes possible to maintain the dissolved oxygen amount high (for example, the saturated concentration or more) over the entire area of the water tank.

Plan view of a closed circulation aquaculture system according to the present invention Diagram explaining the usage of filter media Side view of paddle mixer Sectional view of the purification device placed in the purified water pool Diagram explaining water treatment equipment

  The closed circulation type aquaculture system according to the present invention includes a breeding aquarium 1 having a rectangular shape in plan view, and a reservoir 2 for replenishing the breeding aquarium 1 with clean water is disposed beside the breeding aquarium 1.

  A water discharge device 3 is disposed at one corner of the breeding water tank 1. As shown in FIG. 2, in the water discharge device 3, a strainer 5 is disposed on the upstream side of the pump 4, a filtration unit 6 is disposed on the downstream side of the pump 4, and lava and the like are finely divided inside the filtration unit 6. The crushed porous member 7 is filled, and nanosilver particles are supported on the surface of the porous member 7. For this reason, the sludge in water etc. are removed by passing the filtration part 6, and the proliferation (reproduction) of fungi and algae is suppressed.

  In addition, a nozzle 8 is disposed on the downstream side of the filtration unit 6, and this nozzle 8 introduces air through an air intake pipe 9 to generate bubbles having various particle diameters in units of mm, μm, and nm. Form and mix in water. As a result of mixing, the amount of dissolved oxygen is greatly improved.

  From the water discharge device 3, water in which air (oxygen) is dissolved to a saturation concentration or more is discharged toward the opposite corner portion of the breeding water tank 1. A paddle mixer 10 is provided on each side 1a, 1b forming the opposing corner portions.

  As shown in FIG. 3, the paddle mixer 10 has a plurality of blades 12 attached to a shaft 11 orthogonal to the sides 1 a and 1 b of the breeding aquarium 1. A water flow is formed along each side 1a, 1b shown.

  The water flow along each side 1a, 1b changes direction at the corner, flows along another side 1c, 1d, merges at the corner where the water discharge device 3 is installed, and again faces the water discharge device 3. It is discharged toward the corner. In this way, a circulation flow is formed in the breeding aquarium 1.

  Further, the filter medium 13 is suspended and supported in the breeding water tank 1 at regular intervals. As shown in FIG. 4, the filter medium 13 has mesh bags 15 containing porous members obtained by finely pulverizing lava and the like attached to both surfaces of a plate material 14, and these are connected by strings 16. Nanosilver particles are supported on the surface of the porous member in the same manner as the porous member filled in the filtration unit 6 described above.

  The structure of the filter medium 13 is not limited to the above, and any structure can be used as long as the water circulating in the breeding aquarium 1 can be uniformly contacted so that sterilization and purification can be performed efficiently.

  A water discharge device 17 is disposed at a corner portion of the water tank 2 for supplying clean water to the breeding water tank 1. A water treatment device 18 is disposed at a corner portion facing the corner portion.

  As shown in FIG. 5, the water treatment device 18 has a water purification material 20 disposed at the upper stage where water is supplied from a pump 19, and a porous material 21 carrying nano silver particles similar to the above is disposed at the middle stage. A porous material 22 packed in a bag is disposed.

  Clean water constantly circulates in the water treatment device 18, and when the water in the breeding aquarium 1 is insufficient, purified water is supplied from the water treatment device 18 to the breeding aquarium 1 by a necessary amount.

  The closed-circulation aquaculture system according to the present invention is not limited to shrimp aquaculture and can be used for aquaculture of various fish and plants that require oxygen.

  DESCRIPTION OF SYMBOLS 1 ... Breeding water tank, 1a, 1b, 1c, 1d ... Side of breeding water tank, 2 ... Water storage tank, 3 ... Water discharge apparatus, 4 ... Pump, 5 ... Strainer, 6 ... Filtration part, 7 ... Porous member, 8 ... Nozzle, 9 ... Air intake pipe, 10 ... Paddle mixer, 11 ... Shaft, 12 ... Blade, 13 ... Filter material, 14 ... Plate material, 15 ... Mesh bag, 16 ... String, 17 ... Water discharge device, 18 ... Water treatment device , 19 ... Pump, 20 ... Water purification material, 21 ... Porous material, 22 ... Porous material packed in a bag.

Claims (2)

  In a closed-circulation aquaculture system that circulates water in a breeding aquarium that is rectangular in plan view, a pump and a nozzle for sending water containing fine bubbles toward a corner facing one corner of the breeding aquarium are arranged. In the vicinity of the opposite corner, a paddle mixer that sends out the water flow from the nozzle as a water flow along each side forming the opposite corner and takes air into the water is disposed, and the nano surface is further formed on the surface of the porous member. A closed circulation aquaculture system, wherein antibacterial members carrying silver particles are suspended and supported in a water tank at predetermined intervals.   In a closed circulation type aquaculture system that circulates water in a breeding aquarium having a rectangular shape in plan view, a pump and a nozzle for sending water containing fine bubbles toward a corner facing one corner of the breeding aquarium are arranged. In the vicinity of the opposing corner, a paddle mixer for sending the water flow from the nozzle as a water flow along each side forming the opposing corner and taking the air into the water is arranged, and further arranged upstream of the nozzle A closed circulation type aquaculture system, wherein an antibacterial member having nano silver particles supported on the surface of a porous member is accommodated in the filtered portion.

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