JP2001190166A - Method for culturing or cultivating and system therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently and simultaneously carry out the culture of fishes or shellfishes and the cultivation of aquatic or terrestrial plants. SOLUTION: This method for culturing or cultivating is characterized by simultaneously culturing and cultivating fishes or shellfishes with plants by using water photocatalytically treated with a photocatalyst function substance comprising at least photosemiconductor powder.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for cultivating aquatic or terrestrial plants (hereinafter simply referred to as "plants") while cultivating fish and shellfish.

[0002]

2. Description of the Related Art In the cultivation of fish and shellfish, high-density culturing is carried out in order to produce fish and shellfish efficiently. As a feed used in aquaculture, a high-protein compound feed is often used in place of raw feed in order to accelerate the growth of fish and shellfish.

[0003] In such a case, the residual food of the feed and the excretion of the fish and shellfish settle in the culture pond or the culture tank, deposit as sludge-like sludge, contaminate the water in the culture pond or the culture tank, and produce fish and shellfish. It causes a variety of diseases.

As a solution in such a case, it is conceivable to frequently change the water in the cultivation pond or the cultivation tank, but there is a disadvantage that the cost of the cultivation is high. Is performed in a so-called "closed system" in which water is not replaced in all or part of the system.

[0005] In the case of culturing in a so-called "closed system", a circulation system in which sludge deposited on the bottom of a cultivation pond or cultivation tub is taken out, filtered, and the treated water is returned to the cultivation pond or the like and reused. Has been done.

[0006] However, only filtration can remove sludge itself (sludge as a large solid), but it cannot completely remove bacteria and the like contained in the sludge. There are many problems of death.

[0007] In order to solve the above problems, there is a method of removing bacteria and the like by using a chemical substance such as chlorine. However, it is not a preferable method for living organisms including humans, and it is necessary to adjust pH. New water purification and sterilization methods are being sought.

On the other hand, when a plant is hydroponically cultivated, there is the same problem as described above. That is, since the water used in hydroponics is unsanitary, the roots of the plants rot and efficient hydroponics cannot be performed. In this case, it is possible to prevent root rot by constantly replacing the water used for hydroponic cultivation, but it is very costly, and when cultivating plants only with water, the minerals contained in the water are Is essential for plant growth, and fresh and clean water often does not contain enough minerals necessary for plant growth, and as a result, it is difficult to promote plant growth. It will also happen.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to efficiently and simultaneously cultivate fish and shellfish and cultivate plants.

[0010]

In order to achieve the above-mentioned object, the present invention provides a method for producing fish and shellfish and aquatic or aquatic fish using water that has been subjected to a photocatalytic treatment with at least a photocatalytic functional body composed of an optical semiconductor powder. Farmed with terrestrial plants at the same time,
A method of cultivation and cultivation characterized by cultivation is provided.

A first feature of the present invention resides in that water used for aquaculture and cultivation is treated with a photocatalytic functional body. By subjecting water to photocatalytic treatment, for example, it is possible to decompose and kill bacteria that are the most problematic when cultivating fish fry and microorganisms that cause rooting when plants such as vegetables are hydroponically cultivated. Possible and preferred. In addition, it has been found that clusters of the water subjected to the photocatalyst treatment are reduced, and therefore, there is an effect that the water is easily absorbed when plants absorb water from the roots. Further, the water subjected to the photocatalyst treatment has an effect that the water itself becomes hard to rot because its pH rises by about 1 and shifts to an alkaline side. Due to these effects, there is a difference depending on the type of plant to be cultivated, but there are some plants whose growth is promoted two to three times as compared with normal hydroponics.

A second feature of the present invention is that fish and shellfish cultivation and plant cultivation are performed simultaneously. By using photocatalyzed water for aquaculture and cultivation, the growth of plants is promoted as described above.When raising plants and fish and shellfish that feed on the plants at the same time, the amount of food given to fish and shellfish The amount is smaller than in normal aquaculture. In addition, the excrement produced by the fish and shellfish becomes a fertilizer for the plant, and promotes the growth of the plant. Here, excrement of fish and shellfish includes not only nutrients necessary for plant growth but also bacteria and the like, but in the method of the present invention, water used for cultivation and cultivation reproduces bacteria due to photocatalytic treatment. Can be prevented.

That is, according to the method of the present invention, the environment of the cultivation tank or the cultivation tank can be made to be the same as the natural environment, and it is possible to cultivate and cultivate fish and shellfish or plants as natural ones. The sanitary management of water, which is a problem when farming or the like in a container that has been set, can be performed by the action of decomposing organic substances of the photocatalytic function body.

According to a second aspect of the present invention, there is provided a cultivation tank for culturing fish and shellfish, a cultivation tank for cultivating aquatic or terrestrial plants, and a photocatalyst for treating the water in the cultivation tank and the cultivation tank. A photocatalyst treatment device, the culture tank,
A cultivation and cultivation system is provided, wherein the cultivation tank and the photocatalyst treatment device are connected to each other by piping, and the water to be used circulates through each of the tub and the photocatalyst device.

With such a system, it is possible to simultaneously cultivate fish and shellfish and cultivate plants with high nutrient value and sanitary water.

According to a third aspect of the present invention, there is provided the aquaculture and cultivation system according to the second aspect, wherein there is no distinction between the cultivation tank and the cultivation tank, and the cultivation of fish and shellfish in the same aquarium and aquatic or aquaculture. Cultivation of terrestrial plants is also possible.

[0017] By adopting such a system, the fish and shellfish to be cultivated are plants cultivated in the same aquarium. Can be.

According to a fourth aspect of the present invention, in the culture system according to the second aspect, it is preferable that a photocatalyst unit having a photocatalyst function body is installed in a pipe connecting the respective devices.

In order for the photocatalyst functional body to perform its function, that is, to decompose organic substances and purify and sterilize water, it is necessary that water and the photocatalytic functional body come into direct contact with each other, and in the passage of water to be purified and sterilized. By installing a photocatalyst unit having a photocatalyst functional body in a certain pipe, water can be efficiently sterilized.

Further, as set forth in claim 5, the photocatalyst functional body according to claim 1 is installed in a cultivation tank for cultivating fish and shellfish and a cultivation tank for cultivating aquatic or terrestrial plants. It is also possible to install inside either one or both.

According to the present invention, not only is the photocatalyst unit installed in a pipe or the like, but also the photocatalyst function body is installed in the water tank itself for aquaculture or cultivation.
The effect of the present invention can be increased.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION First, a photocatalyst functional body which is a first feature of the present invention will be described, and then a culture and cultivation system using the photocatalytic functional body of the present invention will be described in detail with reference to the drawings. Will be described.

The photocatalyst functional body shown in FIG. 1 comprises an optical semiconductor powder 2 a, fine particles 2 b serving as electrodes, and an adsorbing material 3.

The optical semiconductor powder 2a is made of TiO._Two
, CdS, CdSe, WO_Three, Fe_TwoO_Three, SrTi
O_Three, KNbO_ThreeAnd the like. Among them,
TiO _TwoIs not attacked by most acids, bases and organic solvents
Chemically stable, and TiO_TwoCan cause addiction
Animal tests, etc.
From such a point, TiO_TwoIs most preferred.

As the fine particles 2b as the electrodes, metal fine particles are usually used in many cases. As the metal fine particles forming the electrode, various metal fine particles such as gold, platinum, and copper can be used in addition to silver. Moisture is required as one of the indispensable elements for the photocatalyst to perform its original function, and the metal fine particles forming the electrode must be stable without change over time in the presence of water. Platinum is most preferable among the above metal fine particles, but silver is preferable because it has the above characteristics in consideration of economy, and is non-toxic and has bactericidal property itself.

As the electrode, silicon fine particles can be used instead of metal. By using silicon instead of metal, the photocatalyst functional body itself becomes inexpensive, and when using the photocatalyst treated body in water, `` the ions contained in water react with the metal as an electrode. The photocatalytic function is reduced ".

In addition to silicon, carbon, which is the same as silicon (group 4) in the periodic table, can be used as an electrode because it has similar properties to silicon.

Here, the electrode is not always necessary for the photocatalytic function body. TiO ₂ as optical semiconductor powder
When TiO ₂ is used, the crystal structure of TiO ₂ includes an anatase type and a rutile type, and the anatase type has a photocatalytic function. The electrodes serve to help the photosemiconductor powder decompose organic substances and the like. However, when a large amount of anatase-type TiO ₂ is present in the photocatalytic functional body, the TiO ₂
This is because the particles alone have a sufficient photocatalytic function and do not require fine particles that function as electrodes.

The adsorbing material 3 is used for adsorbing and holding objects to be treated such as bacteria, viruses, molds, malodorous substances and harmful substances. Examples of the adsorbing material include one or more selected from the group consisting of ceramic powders such as apatite (apatite), zeolite or sepiolite, activated carbon, and silk fiber-containing materials. They can be used in combination. Here, apatite includes bacteria, viruses,
Hydroxyapatite [Ca ₁₀ (PO ₄ ) ₆ (OH) ₂ ], which selectively adsorbs proteins such as mold, is preferred. Examples of the silk fiber-containing material include, in addition to the silk fiber powder, a granulated material, a gel material, and the like. The particle size of these adsorbent materials (when the silk fiber-containing material is powder) is preferably 0.001 to 1.0 μm in consideration of good surface workability and good workability of attachment, and particularly 0.01 to 1.0 μm in consideration of good workability.
0.05 μm is preferred. The mixing ratio of the optical semiconductor powder and the adsorbing material is preferably 1 to 50 parts by weight, more preferably 10 to 30 parts by weight, based on 100 parts by weight of the optical semiconductor powder.

Here, the adsorbing material is not always necessary for the photocatalytic function body. When the photocatalyst function body is adhered to the base material by thermal spraying, the adsorbing material is used for adsorbing and holding an object to be treated such as a malodorous substance and a harmful substance, and the photocatalytic function of the optical semiconductor powder (TiO ₂ ) is used. This is because it is for assisting, and is not necessary when there is no need to assist.

However, when a coating material is used for dipping the photocatalytic function body, it is preferable to use an adsorbing material in order to prevent the photocatalytic function body from decomposing the binder contained in the coating material.

Next, a method of attaching the photocatalyst functional body 1 to a substrate will be described.

The photocatalyst functional body is applied to a base material such as polyester non-woven fabric, paper, woven fabric, plastic, metal plate, ceramic ball or the like by thermal spraying without a binder, or as a paint containing a binder on the base material. May be attached.

FIG. 1 shows a state in which a photocatalyst is adhered to the surface of the substrate 1 by thermal spraying.
For example, fine particles (5 to 50 μm) of titanium oxide (TiO ₂ ) having a melting point of 2000 ° C. or less and fine particles of 1 to 10 μm of metal are formed on a substrate 5 such as paper, wood, a ceramic plate, a metal plate, and a plastic plate. It is obtained by spraying ceramics melted at about 2900 to 3000 ° C. by a gas spraying method using oxygen, acetylene or the like. In the sprayed state, the photocatalyst particles 1 are composed of titanium oxide particles 2a acting as one electrode and a metal, for example, silver particles 2b, carried as the other electrode carried on the titanium oxide particles 2a. The photocatalyst particles 2 form an electrochemical cell, and after spraying, 3
The particles become flat laminated particles having a particle size of 0 to 40 µ and adhere to the base material 1 by the anchor effect while being melted by the high temperature of the gas. Oxygen, in the thermal spraying method by gas thermal spraying using acetylene, etc., the relative movement of the gas torch and the base material for spraying the molten photocatalyst fine particles is performed so that the base material surface does not rise above 50 ° C. , Paper, cloth and the like. However, the melting point of the powder used is limited to 2000 ° C. or less because of gas spraying. It should be noted that plasma spraying is also possible by adjusting the relative speed between the torch and the base material. However, in the case of plasma spraying, the material used can be sprayed to a melting point of about 3500 ° C.

In general, in thermal spraying, since powder is adhered to a substrate by an anchor effect, a powder for thermal spraying is preferably a lump having a size of 5 μm or more, and all anatase is transferred to rutile as a thermal spraying powder. Things are used. Titanium oxide in the form of anatase crystals (titania) has a strong photocatalytic action, but if all the photocatalyst particles after thermal spraying have anatase crystals,
Since the decomposition action is so strong that the substrate may be violated, it may not be practically used. However, the particle size of the anatase crystal particles, the spraying temperature, the substrate surface temperature, and the heating source used are each 5 to 25 μm, and about 2900 to 3000.
℃, 40 ~ 50 ℃ and by adjusting and selecting the gas,
10-40% of anatase crystals can be synthesized.
That is, about 75, which is the transformation point between anatase and rutile.
When the temperature exceeds 0 ° C., all the crystals become rutile type crystals,
According to the above-described thermal spraying method, when all the rutile crystal particles are prepared and sprayed, 10 to 40% of anatase crystals are generated, and the rest are rutile crystals. According to various experiments, X-ray analysis revealed that the weight ratio of anatase to rutile after thermal spraying was preferably 1: 3.

If the photocatalyst particles 2 are mixed with an adsorbing material 3 for adsorbing bacteria such as apatite, zeolite and activated carbon, harmful substances, odors and the like and sprayed, the amount of anatase crystals is adjusted so as not to violate the substrate. This reinforces the point where the photocatalytic action is weakened.

That is, the hydroxyapatite 3 after thermal spraying adsorbs and holds a treatment target such as bacteria, harmful substances, and odors in the atmosphere, and treats the adsorption-held treatment target with photocatalytic particles having 20 to 30% by weight of anatase crystals. Is decomposed, so that the photocatalytic action is reinforced. In order to enhance the photocatalytic action, it is necessary to increase the contact area where the particles come into contact with the object, but the thermal spraying method is preferable because a film having finer particles and a larger surface area is formed as compared with plasma spraying.

The titanium raw material does not necessarily need to be anatase and rutile, and an appropriate photocatalyst can be obtained by adjusting the ratio of anatase having strong catalytic activity to anatase having weak catalytic activity.

FIG. 2 shows a coating film of a coating material having a photocatalyst functional body applied on the substrate 1. As can be seen from FIG. 2, the photocatalyst particles 4 are composed of titanium oxide 4a and silver particles 4b carried on the titanium oxide 4a, and can have the same structure as the particles in the case of thermal spraying shown in FIG. here,
6 in the figure is a binder.

In general, the photocatalyst is a non-eluting system, and the metal carried on the photosemiconductor powder acts as an electrode, which does not elute in the liquid and sterilizes it, but generates OH generated in the presence of water. It exerts a bactericidal effect by radicals. On the other hand, a conventional dissolution type antibacterial agent, for example, a mixture of an antibacterial agent composed of a zeolite carrying a metal such as silver, copper, and zinc having antibacterial properties and a binder and dried at a required place As shown in FIG. 3, the metal immediately elutes into the liquid and exhibits immediate effect, but the effect is reduced in a short time, and the part where the metal is eluted becomes a nest of bacteria and causes harm instead. Becomes

As shown in FIG. 3, the photocatalytic functional body of the present invention may be inferior to the conventional antibacterial agent in terms of immediate effect, but is almost non-elutable, and therefore, is almost insoluble in the liquid. And the effect will last for a long time.

Next, a culture / cultivation system of the present invention using the above-described photocatalytic function body and the method for attaching the same will be described.

The culture and cultivation system of the present invention is provided with a cultivation tank 40 for cultivating fish and shellfish, a cultivation tank 41 for cultivating plants, and the photocatalyst functional body described above, as shown in FIG. Photocatalyst processing devices 42a and 42b
And a pipe 43 connecting them.

Since the water discharged from the culture tank 40 for culturing fish and shellfish contains residual food and excretion of fish and shellfish, a filter 44a is provided in the pipe 43 to remove these impurities. is set up. Then, the water from which impurities such as residual food have been removed by the filter 44a is allowed to flow into the photocatalyst treatment device 42a, where the water is subjected to photocatalyst treatment. Then, the water treated in the photocatalyst treatment device 42a flows into the cultivation tank 41 for cultivating plants.
The water subjected to the photocatalyst treatment is sterilized and purified, and has a small cluster, which is preferable for growing plants. In addition, the water is introduced from the aquaculture tank, and nutrients such as minerals are exuded from remaining food and excrement of fish and shellfish into the water, so that the water has high nutritional value. Further, the water subjected to the photocatalyst treatment has an advantage that it hardly rots because its pH rises by about 1 (to the alkaline side).

Here, the type of plant to be cultivated is not particularly limited, and it is possible to cultivate an aquatic plant or a terrestrial plant.

When the water discharged from the cultivation tank 41 passes through the pipe 43 again and passes through the filter 44b, relatively large impurities are removed, and the water flows into the photocatalyst treatment tank 42b provided at the tip of the filter 44b. .
The water that has flowed into the photocatalyst treatment tank 42b is again subjected to the photocatalyst treatment, then adjusted to a pH and temperature suitable for fish and shellfish cultivation by the pH controller 45 and the temperature controller 46, and then poured into the culture tank 40. .

As can be seen from the above description, according to the aquaculture / cultivation system of the present invention, water used for aquaculture / cultivation can be used in a circulating manner. Both have advantages.

Here, the culture and cultivation system shown in FIG. 4 does not limit the shape and size of the culture tank 40.
Any culture tank may be used. Therefore, the shape and the like can be selected and used depending on the type of fish and shellfish to be cultured. Further, the photocatalyst processing device 42a of the present invention,
Even in the case of 42b, any photocatalyst processing apparatus may be used as long as the photocatalyst function body is provided and the structure is such that water and the photocatalyst function body are in direct contact. For example, a unit-type photocatalyst processing device can be installed in the pipe 43 shown in FIG.

Here, a unit-type photocatalyst processing apparatus (hereinafter, simply referred to as a photocatalyst unit) will be described.

FIG. 5 shows a photocatalyst unit 50 used for a pipe (see FIG. 4) connecting each device. This unit 50 is formed in a cylindrical shape and used so as to connect the pipe ends. Photocatalytic unit 5
Reference numeral 0 denotes a housing 51 formed of a transparent resin material (preferably transparent so as to allow light to enter inside) into a cylindrical shape;
The housing 51 has a conical end plate 52 that is closed at both ends in the longitudinal direction and has a conical shape. At both ends of the housing 51, flange portions 53 projecting outward in the radial direction are formed. A cylindrical insertion portion 54 to be inserted into the pipe is formed at the distal end of the end plate 52, and a flange portion 55 projecting outward in the radial direction is formed at the rear end of the end plate 52. The end plate 52
The flange portion 55 is connected to the flange portion 53 of the housing 51.
To the housing 51 so as to stop the screw.
Attached to.

A rectifying plate 56 having a plurality of regularly arranged openings is provided at both ends inside the housing 51, and a filter formed of a relatively coarse mesh is provided inside the rectifying plate 56 on the water inflow side. A plate 57 is provided. Then, the filter plate 57 and the outflow-side rectifying plate 5
6, an annular nonwoven fabric 58 is accommodated in a layer in the radial direction. A spacer 59 formed of an annular coarse mesh is inserted into the gap between the inner side and the outer side of the nonwoven fabric 58 (see FIG. 5B).

The surface of the nonwoven fabric 58 is coated with a photocatalyst functional body by thermal spraying and dipping. In addition, the photocatalyst functional body accommodated in the housing 51 is not limited to a nonwoven fabric, and the photocatalyst functional body is attached to another base material such as a ceramic ball (see FIG. 7), and is accommodated in the housing 51. It is also possible.

As for the method of storing the nonwoven fabric 58 in the housing 51, in FIG. 5B, a nonwoven fabric formed in an annular shape is used, but as shown in FIG.
1, a non-woven fabric 58 having a photocatalyst functional body attached thereto is accommodated in a direction perpendicular to the flow direction of water, and spacers 59 formed by a coarse mesh are inserted between the non-woven fabrics 58. May be.

By installing such a photocatalyst unit in a pipe, water used for aquaculture and cultivation can be subjected to a photocatalytic treatment.

The photocatalyst treatment apparatus used in the culture and cultivation system of the present invention is not limited to the above-described photocatalyst unit, but may have the following shapes.

In the photocatalyst processing apparatus (water tank type photocatalyst processing apparatus) shown in FIG. 7, a ball 71 as a floating substance is provided in a water storage tank 70. The ball 71 is formed by hardening ceramic into a spherical shape having a diameter of about 3 to 15 mm. The specific gravity is smaller than that of water, and when water flows into the water storage tank 70, the ball 71 floats. A photocatalyst functional body is attached to the surface of the ball 71 by a thermal spraying method. Reference numeral 72 in the figure denotes an inlet for water used for aquaculture and cultivation.
Is an outlet.

By attaching the photocatalyst function body to the floating body as in this embodiment, more light can be received than in the case where the photocatalyst function body is arranged at the bottom of the tank, and the catalytic action can be improved. Can be performed Further, since the ball 71 itself as the floating body is the photocatalyst functional body itself, there is no sterilization or algae adhered thereto.

FIG. 8 shows another embodiment in which the nonwoven fabric is used as a photocatalyst treatment apparatus (water tank type) in another mode. In this embodiment, the opposed inner wall surfaces 8 of the water storage tank 80 are
A mounting rod 82 is provided on the upper ends of the first and second connecting members 81 so as to connect the inner wall surfaces 81 and 81 together. A plurality of nonwoven fabrics 83 formed in a rectangular shape are suspended from the mounting rod 82.
These nonwoven fabrics 83 have photocatalyst functional bodies adhered to both surfaces in order to secure a contact area with water. In order to prevent the nonwoven fabric from floating when water flows into the tank 80, a weight 84 is suspended from the lower ends of these nonwoven fabrics 83. Further, in this embodiment, the nonwoven fabric 83 is provided on the entire bottom surface of the water storage tank 80.

The non-woven fabric 83 used here
Is similar to the nonwoven fabric 58 described with reference to FIG. 5 (b), and a photocatalyst functional body is attached to both surfaces thereof by thermal spraying, dipping, printing, or the like. The nonwoven fabric 83 and the ball 71 are not limited to being used separately, but may be used simultaneously.

By installing the photocatalyst treatment apparatus as described above (see FIGS. 5 to 8) at reference numerals 42a and 42b shown in FIG. 4, it is possible to purify and sterilize water when it passes through the piping.

The installation place of the photocatalyst treatment apparatus is not limited in the present invention, and may be any place on the pipe 43 in FIG. However, among others, as shown in FIG.
It is preferable to set it behind. If the filter is installed before the filter 44, the water to be subjected to the photocatalyst treatment contains a large amount of residual food and excrement of fish and shellfish, which may cause clogging or the like in the photocatalyst treatment device, and cannot effectively exert a bactericidal action. Yes, and when the water is subjected to photocatalytic treatment, the pH of the water increases, which prevents the occurrence of water moss and the decay of the water. Therefore, it is preferable to adjust the pH to a level suitable for aquaculture thereafter. Positioning is preferred. And it is also possible to install other than a photocatalyst processing apparatus (42a, 42b). For example, it can be installed in a culture tank 40 for cultivating fish and shellfish or a cultivation tank 41 for cultivating plants. As shown in FIG. 4, a non-woven fabric 47 (same as the non-woven fabric shown in FIGS. 5, 6, and 8) to which a photocatalytic function body is attached is adhered to the inner wall of each of the tanks, so that a culture tank or a cultivation tank is provided. It is preferable because water can be photocatalyzed therein. Further, without using a nonwoven fabric, the photocatalyst functional body can be attached to the inner wall by using a thermal spraying method or a paint containing the photocatalytic functional body.

Each device such as the pH controller 45 and the temperature controller 46 installed in the culture and cultivation system shown in FIG. 4 is not particularly limited in its shape and the like, and other devices are cultured.・ It can be installed in the cultivation system.

Further, it is possible to use a photocatalyst processing apparatus as shown in FIGS. 5 to 8 to form a culture / cultivation system different from the system shown in FIG.

FIG. 9 is a schematic sectional view of a system in which a culture tank and a cultivation tank are integrated, that is, a system in which cultivation and cultivation are simultaneously performed in one tank. As shown in FIG. 9, the present system comprises an aquarium 9 for cultivating fish and shellfish and cultivating plants.
0, the photocatalyst processing device 91 described above, the filter 92, the pH controller 93, the temperature controller 94, and a pipe 95 connecting these devices, and particularly fish cultured and cultivated in seawater. 97 and shellfish 98 and seaweed 9
9 suitable for aquaculture and cultivation.

Water discharged from the water tank 90 flows into a filter 92 through a pipe 95. The filter 92 can remove fish and shellfish excrement contained in the water. The water that has passed through the filter 92 is then flowed into the photocatalyst processing device 91. Then, by direct contact with the photocatalyst functional body in the photocatalyst processing tank 91, sterilization and purification are performed. The photocatalyzed water is then pH
Cultivation of fish and shellfish through the controller 93, temperature controller 94, etc.
The pH and temperature become suitable for plant cultivation, and the water tank 90
Is poured into. Here, similarly to the culture and cultivation system shown in FIG. 4, the place where the photocatalyst functional body is installed is not limited to the inside of the photocatalyst processing device 91, but can be installed in the water tank 90 ( Reference numeral 96). The shape of the photocatalyst processing device 91 is not particularly limited, and the photocatalyst unit (FIGS. 5 to 8) described above can be used.

By adopting such a system, the following merits are obtained. 1) Water circulating in the system can be kept sanitary. 2) Since the water-treated water has small clusters, the plants can easily absorb the water from the roots, and the growth of the plants can be promoted. 3) The filter 92 and the photocatalyst treatment device can remove impurities and bacteria such as fish and shellfish excrement from the circulating water, while the circulating water dissolves nutrients and minerals from the excrement and the like. Therefore, nutrient-rich water can be used for plant cultivation.

In addition, the following advantages can be obtained by using fish and shellfishes and seaweeds as the objects of aquaculture and cultivation. 4) Seaweeds 9 due to the advantages described in 1) to 3) above
9 is promoted. 5) The seaweed 99 whose growth has been promoted is replaced with fish 97 and shellfish 98.
By eating as a bait, the growth of these fish and shellfish 97, 98 is promoted (and natural bait is used unlike normal farming). 6) Excretions and the like discharged when the fish and shellfish 97, 98 grow after eating the seaweeds 99 produce nutritious water as described in the above advantage 3), thereby promoting the growth of the seaweeds 99. .

By using the method and system of the present invention, that is, the advantages described in 4) to 6) above, the environment inside the aquarium 90 becomes more natural, and the growth of both fish and shellfish and plants is promoted. Therefore, we humans will be able to collect fish, shellfish and seaweed.

The method and the device according to the present invention are as follows.
The present invention is not limited to the above embodiment. The above embodiment is an exemplification, and any structure having substantially the same configuration as the technical idea described in the claims of the present invention and having the same effect can be obtained by the present invention. Within the technical scope of

For example, the type of fish and shellfish to be cultured and the type of plant to be cultivated are not particularly limited, and any type can be cultivated and cultivated. However, since water used in the system is recycled, it is necessary to cultivate seaweed when cultivating seawater fish, and conversely, when cultivating freshwater fish, plants cultivated in freshwater (such as rice and Ornamental flowers) must be grown.

[0071]

According to the present invention, fish and shellfish are cultivated and aquatic or terrestrial plants are cultivated using water treated by the photocatalytic functional body, so that cultivation and cultivation can be performed with sanitary and highly nutrient water. It is also possible to perform aquaculture and the like in a more natural state.

[Brief description of the drawings]

FIG. 1 is a diagram showing a state of a film formed by a thermal spraying method.

FIG. 2 is a diagram showing a state of a coating film.

FIG. 3 is a diagram showing a comparison between the effects of a conventional catalyst and the present invention as a photocatalyst.

FIG. 4 is a schematic diagram of the culture / cultivation system of the present invention.

5A is a side view of the photocatalyst unit of the present invention, and FIG. 5B is a cross-sectional view.

FIG. 6 is a longitudinal sectional view of a photocatalytic unit (water storage tank type) of the present invention.

FIG. 7 is a longitudinal sectional view of a photocatalytic unit (water tank type) of the present invention.

FIG. 8 is a longitudinal sectional view of a photocatalyst unit (water tank type) of the present invention.

FIG. 9 is a schematic diagram of the culture / cultivation system of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Substrate, 2a, 4a ... Opto-semiconductor powder, 2b, 4b ... Electrode, 3 ... Adsorption material, 5 ... Substrate, 6 ... Binder, 40 ... Culture tank, 41 ... Cultivation tank, 42a, 42b, 91 ... Photocatalyst Processing tank, 50, 70, 80: Photocatalyst unit, 90: Water tank.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Tsukasa Sakurada 1391-3 Morihara, Ogiwarakawa, Kamimatsu-cho, Kiso-gun, Nagano F-term (reference) 2B104 EE09 EE11 EE13 EF09 EF11 2B314 MA46 PA11 PB02 PB44 PB64

Claims (5)

[Claims] An aquaculture and cultivation method characterized in that fish and shellfish and aquatic or terrestrial plants are simultaneously cultivated and cultivated using water that has been photocatalyzed by at least a photocatalytic functional body composed of an optical semiconductor powder. 2. A cultivation tank for culturing fish and shellfish, a cultivation tank for cultivating aquatic or terrestrial plants, and a photocatalyst treatment device for photocatalyzing water in the cultivation tank and the cultivation tank. Wherein the culture tank, the cultivation tank, and the photocatalyst treatment device are connected to each other by piping, and water used is configured to circulate through the respective tanks and the photocatalyst device. system. 3. The aquaculture and cultivation system according to claim 2, wherein there is no distinction between the cultivation tub and the cultivation tub, and cultivation of fish and shellfish and cultivation of aquatic or terrestrial plants are performed in the same aquarium. . 4. The aquaculture and cultivation according to claim 2, wherein the photocatalyst processing device has a unit type that can be installed in a pipe connecting each tank and the device. system. 5. The photocatalytic function body according to claim 1 is installed inside one or both of a cultivation tank for culturing fish and shellfish and a cultivation tank for cultivating aquatic or terrestrial plants. The aquaculture and cultivation system according to any one of claims 2 to 4, wherein: