CN111202015A

CN111202015A - Plankton proliferation material, plankton proliferation device, and plankton proliferation method

Info

Publication number: CN111202015A
Application number: CN201811389082.8A
Authority: CN
Inventors: 小岛昭
Original assignee: He Shizhuang
Current assignee: He Shizhuang
Priority date: 2018-11-21
Filing date: 2018-11-21
Publication date: 2020-05-29

Abstract

The invention provides a plankton proliferation material, a plankton proliferation apparatus, and a plankton proliferation method, which can stably and continuously supply ferric fulvic acid required for plankton proliferation to environmental water for a long time. The plankton-proliferating material is composed of a net-like container filled with a granular iron material, a granular carbon material and an adsorbent, or is composed of a small box combination of a net-like container filled with a granular iron material and a granular carbon material and a net-like container filled with an adsorbent. The plankton proliferation device is formed by stacking at least one set of the plankton proliferation material and small boxes of the mesh container filled with the leaf mold, and filling the stacked boxes into a larger mesh container. The plankton proliferation method comprises placing the plankton proliferation device in environmental water for plankton culture.

Description

Plankton proliferation material, plankton proliferation device, and plankton proliferation method

Technical Field

The present invention relates to a plankton-proliferating material, a plankton-proliferating device, and a plankton-proliferating method using the same.

Background

The earth is the planet of water and the planet of iron. The earth's life benefits from the benefits of iron. Humans can also become anaemic if iron is insufficient. The red color of human blood is caused by iron. Plants promote the production of the essential substance chlorophyll by iron. However, iron, which is a key material, is very rare in water.

There are sea areas on the earth where plants are not flourishing. Although nitrogen and phosphorus are abundant in this sea area, the number of phytoplankton is small and the chlorophyll concentration is low. This is mainly due to the iron deficiency. When iron sulfate was dispersed in the sea area, the growth of phytoplankton was confirmed. However, it is extremely difficult to continuously distribute iron sulfate in a wide sea area.

If the iron content in water increases, plankton increases and plants in water flourish. Oxygen is released from these plants, the dissolved oxygen concentration in water increases, and water purification progresses to improve transparency. Thus making the photosynthesis more active. If the plants (aquatic weeds and seaweeds) in water are abundant, the hiding place and spawning site of aquatic animals can be created to proliferate fishes, shrimps and shellfishes. In addition, carbon dioxide in seawater is consumed due to the growth of plants such as seaweeds and seaweeds, and thus, it is helpful to prevent global warming. Thus, dissolving iron in seawater is a two-purpose technique for the global environment. Therefore, it is not enough to say that a technique for continuously supplying iron is a technique sought all over the world.

However, it is not easy to dissolve iron in seawater. This is because the iron rod is only very slightly soluble even when immersed in seawater.

Therefore, various attempts have been made to continuously supply iron content to seawater (patent documents 1 to 3).

(mountain forest maintenance method)

A method for afforesting a mountain to make fulvic acid iron be generated in river water. However, the effect is exerted decades later and cannot be applied as an early solution. In addition, there are many problems in terms of economy.

(method of spreading agent)

A method for dispersing iron-based chemical in the sea. The medicament is ferrous sulfate, ferric chloride, polyferric oxide and the like. Although it can be used when the amount of water is limited, it is not usable in a large amount, environmental pollution due to anions, and economic efficiency in a sea area or the like.

(iron carbon reunion method)

A method for putting disposable bosom stove into seawater. There is also a method of adding citric acid. The contents of the hand warmer are iron powder and carbon powder (charcoal powder), and when put into water, the carbon powder reacts only at the contact part with the iron powder to release iron ions, but there is no continuity. The iron powder of the pocket warmer after being unsealed can be changed into iron oxide, and the iron oxide and the carbon powder can not dissolve out iron ions. Therefore, the durability of the effect is difficult.

(iron and steel slag method)

A method for growing sea grass by burying iron and steel slag on the coast. Not only has difficulty in reproducibility, but also has the possibility of containing harmful heavy metals in the slag, possibly causing environmental pollution of seawater and the like, and the problem accumulation is like a mountain.

Thus, how to dissolve iron in water is a very difficult problem. Even if only the iron material is charged into water, iron does not dissolve as described above. However, energy and chemicals such as electricity may adversely affect the environment. Therefore, the inventors of the present invention have considered whether iron can be dissolved without using energy such as electricity or a chemical.

The inventors of the present invention have studied to produce a high-strength building material by mixing carbon fibers into mortar 30 years ago. In this study, the following phenomena were observed: the carbon fiber, cement and water were mixed and poured into a sand box made of iron, and when the sand box was removed from the sand box after 1 day, the inner side surface of the sand box was corroded. In addition, about 20 years ago, in the research of fish reefs, the following phenomena were observed: after one month of winding a carbon fiber fabric on an iron rod and sinking into the sea, the iron rod having a thickness of 3cm was thinned into an iron wire.

From these two phenomena the present inventors have found a method of dissolving iron using a carbon material. Iron dissolves when it comes into contact with carbon materials such as carbon fibers and graphite in water. This is because a local battery is formed between the carbon material and the metallic iron, so that the ionization of iron proceeds. With this method, neither electricity nor chemicals are required, and therefore the water environment is not polluted by chemicals. The new material developed at that time is named as an iron-supplying material because carbon is brought into contact with iron (patent documents 4 and 5).

If the iron component supply material is provided in an oyster farm, the following results are brought about: the yield of oyster is increased by 30%, and the glycogen content of the fresh taste is increased by 70%. In addition, the iron content supplying material promotes the luxuriant of the seaweeds. Accordingly, the present inventors focused on projects for regenerating algal forests in the sea of the island of Olympic, Gongcheng. In this sea area, a large amount of abalone, sea urchin, fish and shellfish can be collected before the earthquake in east and Japan, but the once abundant marine algae in the sea bottom completely disappear due to the tsunami. There, when the iron content supply material was set on the seabed, the algal forest with luxuriant algae was reactivated after 5 months. Fishes swim through the algae, so that sea urchins and abalones grow in the seabed in a large quantity, and the abundant sea recovers vitality.

On the other hand, the oceans in japan suffer from reef lime algaecation. Reef lime algaecation refers to the withering and non-growth of marine algae occurring in the sea floor. If the reef lime algaecide occurs, the breeding field and spawning field of aquatic animals disappear, and the breeding field and spawning field become a great cause of the decline of aquaculture industry. The above-described iron component supplying material is a technique for solving these problems.

The iron component supplying material used so far is a material in which iron ions are dissolved out by forming a local cell by contacting an iron plate with a carbon plate in water. Further, it is characterized in that iron can be ionized without using energy or chemicals. Even if the iron material is simply immersed in water, iron is not eluted, but if this structure is adopted, the amount of elution is 1 digit greater than that of iron alone. Further, since the amount of iron released is affected by the contact area, the water temperature, the flow of water, and the like, various iron partial supply materials have been studied and developed. However, a combination of iron plate/graphite plate is mainly used. In order to further increase the amount of plankton generated in seawater, there is also an iron component supplying material having a structure in which leaf mold is disposed in the vicinity. The basic structure of the iron component supplying material in this case is iron/carbon/humus soil.

If any of the above-described iron-based materials is used for a long period of time, the iron material and the carbon material are peeled off, contact therebetween becomes insufficient, and the amount of iron dissolved decreases. Such peeling may occur for the following reasons: iron oxide formed by oxidation of dissolved iron in water adheres to the iron oxide; or marine organisms such as shellfish, sea squirt, and seaweed. Although various studies have been made to solve these problems, no specific method has been found.

In addition, since the conventional iron component supplying materials use graphite plates and iron plates, the iron material is dissolved once a predetermined period of time has elapsed, and thus replacement becomes necessary. However, replacement is almost impossible to the fisherman. This is because: because of the large number of uses, it is impossible to secure a replacement time, that is, it is a practical problem to incorporate the replacement into daily work.

As described above, the conventional iron-based material needs a simplified method for replacing the iron material, but there is no specific method.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open No. 2014-131488

Patent document 2: japanese patent laid-open publication No. 2017-046593

Patent document 3: japanese patent laid-open publication No. 2017-159260

Patent document 4: WO2016/024408

Patent document 5: japanese patent laid-open publication No. 2014-200213

Disclosure of Invention

Problems to be solved by the invention

With the iron component supplying materials heretofore, the iron material and the carbon material are always in contact (including contact caused by electrical connection). However, when oxides or marine organisms adhere to and grow on the surface of the iron plate and are isolated from the carbon plate, the function as an iron component supplying material is lost.

Therefore, the inventors of the present invention have conceived of a structure in which the iron plate and the carbon plate are not in contact at all times, but are in contact intermittently. It is composed of the following components: by using a granular iron material and a granular carbon material instead of using plate-like iron or plate-like carbon, the iron device mainly utilizing point contact functions.

An object of the present invention is to provide a plankton proliferating material and a plankton proliferating device, which can stably and continuously supply ferric fulvic acid required for plankton proliferation to environmental water for a long period of time by the above-described configuration and can easily replace an appropriate iron material. Further, another object of the present invention is to provide a plankton proliferating method using the plankton proliferating material and the plankton proliferating apparatus.

Means for solving the problems

The inventors of the present invention consider: when a granular iron material and a granular carbon material are placed in a mesh container and suspended in seawater, the movement of seawater due to the movement of seawater such as waves, wind, ebb tide, and flood tide causes mixing and stirring in the mesh container, and the granular iron material and the granular carbon material in the mesh container are mixed, and as a result, the iron material and the carbon material come into contact with each other, whereby various problems caused by surface-to-surface contact and the like of the conventional iron component supplying material can be solved, and intensive studies have been made, and the present invention has been completed.

The gist of the present invention is as follows.

1. A plankton-proliferating material is prepared from a net-like container filled with a granular iron material, a granular carbon material and an adsorbing material.

2. A plankton-proliferating material comprising a small box composed of a net-like container filled with a granular iron material and a granular carbon material and a net-like container filled with an adsorbent.

3. The plankton proliferation material according to claim 1 or 2, wherein the granular carbon material has a longest side of 20mm or less and has conductivity.

4. The plankton proliferation material according to any one of the above 1 to 3, wherein the adsorbent material is any one of charcoal, activated carbon, activated clay, diatomaceous earth and zeolite or a mixture thereof and has a specific surface area of 200m²More than g.

5. The plankton proliferation material according to any one of claims 1 to 4, wherein the granular iron material is set so that the longest side is 20mm or less.

6. The plankton proliferation material according to any one of claims 1 to 5, wherein the mesh container is formed of a mesh material made of any one of iron, plastic, paper, biodegradable fiber, biodegradable resin, and chemical fiber, or a composite material thereof.

7. A plankton proliferation apparatus comprising a larger mesh container and at least one set of the plankton proliferation material described in any one of 1 to 6 and small boxes of the mesh container filled with leaf mold stacked together.

8. The plankton proliferation apparatus according to claim 7, wherein the small box of the meshed container filled with the leaf mold is a small box formed of a meshed material made of any one of iron, plastic, paper, biodegradable fiber, biodegradable resin, and chemical fiber, or a composite material thereof.

9. The plankton proliferation apparatus according to claim 7 or 8, wherein the larger mesh container in which the plankton proliferation material and the small box are loaded is a mesh container formed of a mesh material made of iron, plastic, paper, biodegradable fiber, biodegradable resin, chemical fiber, or a composite material thereof.

10. A plankton breeding method comprising placing the plankton breeding device described in any one of the above 7 to 9 in environmental water for plankton breeding.

11. The plankton proliferation method according to claim 10, wherein said iron material and said carbon material are intermittently brought into contact in said mesh container by a flow of said ambient water to generate iron ions, iron fulvic acid is generated by an action of said iron ions and said leaf mold, and said iron fulvic acid is adsorbed on said adsorbing material, and said iron fulvic acid generated by an action of said iron ions and said leaf mold and said iron fulvic acid adsorbed on said adsorbing material are continuously supplied to said ambient water.

Effects of the invention

The invention provides a plankton proliferation material and a plankton proliferation device, which can stably and continuously supply ferric fulvic acid required by plankton proliferation to environmental water for a long time.

The present invention also provides a plankton proliferating method using the plankton proliferating material and the plankton proliferating apparatus.

Drawings

Fig. 1 is a view showing an external view of a treasure box. (A) Is an appearance view of the outer container of the treasure box seen from the transverse direction. (B) A figure (an example) showing that an object constituting the cylindrical object and the upper cover (lower cover) is a net shape. (C) The upper cover (formed by a net) is seen from the upper part. (D) Is an external view of the upper cover made of the net as viewed in the lateral direction.

Fig. 2 is a diagram showing an internal structure of a treasure box.

Description of the symbols

1 treasure island small box (plankton proliferation material)

2 small box filled with leaf mold

Detailed Description

The present invention can stably and continuously supply the iron fulvate required for plankton proliferation into the environmental water for a long period of time by the following action. In addition, the environmental water in the present invention refers to a water area in which plankton is suitable for growth, and includes various areas such as sea, river, marsh, lake, and the like.

In the present invention, a plankton proliferating device (also referred to as a treasure box in the present invention) is obtained by stacking at least one set of a plankton proliferating material (also referred to as a treasure box in the present invention) made of a net-like container filled with a granular iron material, a granular carbon material and an adsorbing material or a net-like container filled with a granular iron material and a granular carbon material and a small box of a net-like container filled with an adsorbing material, and filling the resultant stack into a larger net-like container (also referred to as an outer container in the present invention), and placing the plankton proliferating device in the ambient water. Then, the iron material and the carbon material are intermittently brought into contact with each other in the mesh container of the treasure box by the movement of the environmental water or the like in which the plankton growth device is placed, thereby generating iron ions. Further, the generated iron ions act by contacting the leaf mold, thereby generating fulvic acid iron for proliferating plankton. Further, in terms of the number of steps for replacement and the efficient expression of the performance of the adsorbent, a plankton-proliferating material made of a small box of a mesh container filled with a granular iron material and a granular carbon material and a mesh container filled with an adsorbent is more preferable than a plankton-proliferating material made of a mesh container filled with a granular iron material, a granular carbon material and an adsorbent.

Among the generated iron fulvates, an excessive amount of the iron fulvates is temporarily adsorbed on the adsorbent. When the amount of the produced fulvic acid iron is small, the fulvic acid iron adsorbed on the adsorbent is eluted into the ambient water. As described above, the plankton proliferating method of the present invention can stably supply the ferric fulvic acid necessary for proliferating plankton to the environmental water by using the plankton proliferating apparatus.

The present invention will be described in detail below.

The treasure box of the invention contains granular iron material, granular carbon material, adsorbing material and leaf mold. Here, when the treasure box is filled in ambient water, charcoal, which is a carbon material, comes into contact with iron, which is an iron material, to dissolve iron ions. The dissolved iron ions are oxidized to become iron oxide if they are directly put there. The iron oxide does not exhibit an effect on the proliferation of plankton.

In the present invention, leaf mold is added to allow the iron ions eluted as iron ions. The iron ion and the leaf mold act to form fulvic acid iron, which enables plankton proliferation. However, since the iron fulvate is water-soluble, it is eluted in a short time. That is, although this is preferable in terms of immediate effectiveness, there is a problem in terms of persistence of the effect.

Accordingly, the inventors of the present invention considered: if the griseofulvin can be temporarily adsorbed and gradually dissolved out, the growth of plankton can be continued, and an adsorbent capable of temporarily adsorbing the griseofulvin has been studied. Among them, there are various materials as the adsorbing material, but as the treasure box, the conclusion is obtained: charcoal, activated carbon, and zeolite having developed pores are preferable. That is, since these substances have suitable adsorptivity for iron fulvate.

[ plankton proliferating agent ]

The plankton proliferating material (treasure box) used in the plankton proliferating method of the present invention is made of a mesh container filled with a granular iron material (hereinafter also referred to as granular iron), a granular carbon material (hereinafter also referred to as granular carbon) and an adsorbent, or is made of a box filled with a mesh container filled with a granular iron material and a granular carbon material and a mesh container filled with an adsorbent.

In the present invention, the granular form is not particularly limited as long as it flows (generates movement to allow the iron material and the carbon material to repeatedly contact and separate) by the movement of the environmental water. Therefore, the shape of the sheet may be spherical, cylindrical or straw-wrapped, or the shape of the sheet may be rod-like, flake-like, scale-like, fiber-like or wire-like, or the surface thereof may be smooth or uneven, and the sheet may have gaps, voids or holes inside. In addition, a curved shape or a hollow shape is also preferable.

[ carbon Material ]

The longest side of the granular carbon material is preferably 20mm or less. This is because the contact state with the iron material in the environmental water is stable and the amount of generated iron ions becomes appropriate.

More preferably, the longest side is set to 1mm to 5 mm. This is because the treatment is the simplest.

The longest side in the present invention means the longest side (including diagonal lines) when one of the granular carbon materials is projected on a plane. The measurement frequency may be according to JIS Z8833.

Among the above granular carbon materials, the carbon material having an adsorption function is preferably set to have a specific surface area of 200m²More than g. This is because the adsorption amount of the iron fulvate in the ambient water becomes appropriate.

Preferably 100m²/g～2000m²(ii) in terms of/g. This is because the treatment is the simplest.

The granular carbon is preferably charcoal obtained by carbonizing at 800 to 1000 ℃ or 1200 ℃. By setting such conditions, the conductivity is improved, and the elution of iron is improved by the contact with the iron material.

The carbon material as the adsorbent is preferably a carbon material carbonized at 500 to 800 ℃, more preferably 650 ℃. This is because, in this case, the specific surface area is 300m²More than g, so as to adsorb the fulvic acid iron and supply the fulvic acid iron to the environmental water for a long time. In particular, in order to accelerate the growth of plankton and improve the persistence of the effect, it is more preferable to mix charcoal produced at 500 to 800 ℃ with charcoal produced at more than 1200 ℃ to exhibit both performances.

The mixing ratio of the mixed charcoal is 1/5 to 5/1 (mass ratio) based on the charcoal/granular carbon material as the adsorbent, and is preferably 1/1.

[ adsorbing Material ]

The adsorbent usable in the present invention includes activated carbon, zeolite, activated clay and diatomaceous earth in addition to the above charcoal. The shape of the adsorbent is not particularly limited. Therefore, as long as the adsorption to fulvic acid iron has a predetermined value, the specific surface area is preferably 200m²At least one of them may be a granular charcoal.

In the above-described conventional technique, only a carbon material having high conductivity is used. These are graphite, carbon fiber, charcoal carbonized at high temperature, and the like. Among them, the conductivity and adsorption of charcoal are affected by the production temperature (carbonization temperature). The higher the temperature treatment, the higher the conductivity, but the adsorption property is lowered. The prior art is a high-temperature treatment product with high conductivity, so the adsorptivity is low.

Here, in the present invention, even when a carbon material having a conductivity not so high as compared with the conventional one is used, the elution amount of iron ions sufficient for the proliferation of plankton can be secured.

The reason for this is not clarified yet, but in the present invention, the carbon material has kinetic energy of flow by using a granular carbon material as the carbon material. The inventors of the present invention considered that: thus, the conductive particles can have the adsorption property without reducing the elution amount of iron ions too much even if the conductivity is not so high.

Further, by using two kinds of carbon materials, or a high-temperature treated carbon material and another adsorbent, it is possible to continuously and efficiently elute iron ions.

[ iron Material ]

The longest side of the granular iron material is preferably set to 20mm or less. This is because the contact state with the granular carbon in the environmental water is stable and the amount of iron ion generated becomes appropriate.

In the present invention, the longest side of the granular iron is synonymous with the longest side of the granular carbon.

As an iron material of the granular iron that can be used in the present invention, there is an SS material or an SM material.

The granular iron and granular carbon used are mixed at a predetermined ratio. The ratio of the carbon particles to the iron particles is preferably set to a range of 20/1 to 1/20 by mass. The iron material of the granular iron and the carbon material of the granular carbon used preferably satisfy JIS standards.

An example of filling a mixture of granular carbon and granular iron in a treasure box will be described. This filling was carried out by filling the container with the same amount of mixture as the volume of the treasure box and flattening the upper surface. At this time, the pressing is not performed from the upper surface because the movement in the environmental water is suppressed.

[ Net-shaped container ]

The mesh container (including the mesh container containing the adsorbent) is formed of a mesh material made of any one of iron, plastic, paper, biodegradable fiber, biodegradable resin, and chemical fiber, or a composite material thereof. The selection of the material may be determined according to the user's request, or may be made by mixing containers of other materials such as iron and plastic.

In the case of a replacement type treasure box in which the granular iron, the granular carbon, and the adsorbent are replaced and used, a net made of plastic, chemical fiber, or paper is preferably used. In addition, in the case of not retracting the treasure box, a net made of iron or a net made of a biodegradable material which is naturally decomposed may be used.

The mesh size is preferably 1 to 5 mm.

[ plankton proliferation apparatus ]

The plankton proliferation device (treasure box) of the present invention is obtained as follows: the plankton growth material (treasure case) and the small case of the net-like container filled with leaf mold are alternately stacked (in the case of the treasure case in which the net-like container filled with the granular iron material and the granular carbon material and the small case of the net-like container filled with the adsorbent are combined, the small case of the net-like container filled with leaf mold may be sandwiched between the net-like container filled with the granular iron material and the granular carbon material and the small case of the net-like container filled with the adsorbent) and a larger net-like container (also referred to as an outer container in the present invention) may be loaded.

Fig. 1 shows an external view of a treasure box.

In the figure, (a) is an external view of an outer container of the treasure box seen from a lateral direction. Further, the outer container is a cylinder made of a mesh, and the upper mesh is an upper cover. The rod-like member protruding from the upper cover to the left and right is a tool for fixing the upper cover and the cylindrical member.

(B) An example of a figure showing that an object constituting the cylindrical object and the upper cover (lower cover) is a net shape is shown.

(C) The upper cover (formed by a net) is seen from the upper part. The rod-shaped objects provided on the left and right sides are rod-shaped fixtures for fixing the upper lid and the outer container.

(D) Is an external view of the upper cover made of the net as viewed in the lateral direction. The rectangle (the corners are rounded) in the central portion is a rod for fixing the upper lid and the outer container. Further, an upper lid and a lower lid (not shown) made of a mesh-like raw material are provided on the cartridge used for the outer container.

The internal structure of the treasure box is shown in fig. 2. In the figure, 1 is a treasure case filled with granular iron, granular carbon and an adsorbent, and 2 is a case filled with a leaf mold net container. As shown in the figure, 3 or 4 cylindrical containers made of mesh are stacked in the treasure box. These containers are a treasure case filled with granular iron, granular carbon and an adsorbing material and a case filled with leaf mold.

The treasure island box is provided with a small box and a treasure island box respectively. The effect of the present invention can be obtained if there is at least one set of a small box and a treasure island small box, but when 3 small boxes and a treasure island small box are overlapped, it is preferable to have the order of the small box, the treasure island small box, and the small box from the bottom. In addition, when 4 small boxes and treasure box boxes are overlapped, it is preferable to have a sequence of small box, treasure box, and small box from the bottom as shown in fig. 2. Even if the total number of the small boxes in the treasure case and the treasure case is 5 or more, the effect of the present invention can be obtained by setting the elution amount of the fulvic acid iron and performing an appropriate combination.

As described above, when the treasure case is a combination of a net-like container filled with a granular iron material and a granular carbon material and a case of a net-like container filled with an adsorbent, the following forms may be stacked: the small box of the meshed container filled with the leaf mold is clamped between the meshed container filled with the granular iron material and the granular carbon material and the small box of the meshed container filled with the adsorbing material.

In the present invention, the following two plankton-proliferating materials may be mixed and used: a plankton-proliferating material made of at least one mesh container filled with a granular iron material, a granular carbon material and an adsorbing material; and a plankton-proliferating agent comprising a combination of a net-like container filled with a granular iron material and a granular carbon material and a small box of the net-like container filled with an adsorbent.

The size of the treasure box is preferably cylindrical, and the width and the height of the treasure box are both within 50 cm. More preferably about 30 cm. The mass is preferably 10kg or less, which enables work on ships and rafts. More preferably 5kg or less.

Under the condition of supplementing or replacing the leaf mold or under the condition of supplementing or replacing the granular iron, the method can be carried out as follows: after the treasure island box is arranged for several months, for example, after 3 months, the treasure island box is lifted, and leaf mold soil is added into the small box or the small box in the treasure island box is replaced by the small box filled with leaf mold soil; or the grain iron is added into the treasure island box or the treasure island box in the treasure island box is replaced by the treasure island box filled with the specified amount of grain iron.

After the beginning of the setting for years, the iron treasure box will be disassembled. The same applies to a treasure box made of a biodegradable material. In the case of containers made of plastic or chemical fiber, since the containers retain their original shape, it is also possible to replenish the seed iron in the island box or fill the box with leaf mold for reuse after the island box is retracted.

[ leaf mold ]

The leaf mold in the present invention is a material that is deposited on the surface of the ground as rotten wood, fallen leaves, or fallen branches from organic matter produced by overground plants in the forest ecosystem, and is decomposed (fallen leaves are decomposed) by biochemical metabolic action of microorganisms such as bacteria that utilize the organic matter as resources, and soil animals of various sizes such as earthworms.

The leaf mold in the small box is preferably filled to a volume 2 times the volume of the small box in the treasure island.

[ Small case ]

The small case of the meshed container filled with the leaf mold is formed of a meshed material made of any one of iron, plastic, paper, biodegradable fiber, biodegradable resin and chemical fiber or a composite material thereof. The selection of the material may be determined according to the user's request, or may be made by mixing containers of other materials such as iron and plastic.

In the case of a replaceable treasure box in which leaf mold in a small box is replaced and used, it is preferable to use a net made of plastic or chemical fiber. Further, a container of a net made of plastic or chemical fiber may be used in combination.

In the case of not retracting the treasure box, a net made of iron is used. Alternatively, a net made of a biodegradable material which is naturally decomposed may be used.

The mesh size is preferably 1 to 5 mm.

[ larger netted Container (outer Container) ]

The larger mesh container (outer container) in which the plankton-proliferating material and the small box are loaded is formed of a mesh material made of any one of iron, plastic, paper, biodegradable fiber, biodegradable resin, and chemical fiber, or a composite material of these materials. As to which raw material is selected, the user can select it as appropriate.

In the case of a replaceable treasure box in which any one of granular iron, granular carbon, an adsorbent, and leaf mold in the treasure box is replaced and used, a net made of plastic or chemical fiber is preferably used. In addition, in the case of not retracting the treasure box, a net made of iron or a net made of a biodegradable material which is naturally decomposed may be used.

The mesh size is preferably 1 to 10 mm.

[ method of proliferating plankton ]

The present invention is the plankton proliferation method described above, as follows: a plankton growth material is produced by using at least one mesh container filled with a granular iron material, a granular carbon material and an adsorbing material, or by combining a mesh container filled with a granular iron material and a granular carbon material with a small box of a mesh container filled with an adsorbing material to produce a plankton growth material (BAO island small box), and the plankton growth material (BAO island small box) and the small box of the mesh container filled with leaf mold are stacked at least in one group and are filled into a larger mesh container (outer container), and the plankton growth device produced by the above constitution is placed in ambient water.

That is, iron ions are generated by the flow of the environmental water in which the plankton growth device is placed and the granular iron and granular carbon intermittently contact each other in the treasure box. Then, the iron ions come into contact with the leaf mold and act thereon, thereby generating fulvic acid iron for proliferating plankton. In addition, the method for proliferating plankton of the present invention is a method for proliferating plankton, in which the griseofulvin is adsorbed on the adsorbent to control the griseofulvin supplied to the environmental water, and in which the griseofulvin adsorbed on the adsorbent is eluted when the griseofulvin is insufficiently generated, to stably supply the griseofulvin to the environmental water for a long period of time.

In addition, the treasure island box is mounted and suspended on a raft or an extension rope of the oyster farm. The suspension position is preferably set to an optimum depth in the farm, up to 3m below the sea surface.

In addition, the fulvic acid iron is stably dissolved out from the treasure box for a long time. This increases the speed of formation of plankton in the sea water, and increases the plankton concentration. In particular, plankton as a feed for oysters brings about an excellent effect of promoting the growth of oysters and the like.

In the plankton proliferating method of the present invention, the following plankton proliferating agents may be mixed and used: a plankton-proliferating material made of at least one mesh container filled with a granular iron material, a granular carbon material and an adsorbing material; and a plankton-proliferating agent comprising a combination of a net-like container filled with a granular iron material and a granular carbon material and a small box of the net-like container filled with an adsorbent.

Example 1

A treasure box was produced by stacking 4 boxes (2 plankton-proliferating materials and 2 boxes) with a treasure box as shown in fig. 2. In the plankton proliferating material in a ratio of 4: a total of 1000g of a granular carbon material (charcoal obtained by high-temperature carbonization at 1200 ℃ C., average longest side of 2mm) and a granular iron material (average longest side of 2mm) were charged at a mass ratio of 1. Further, 400g of leaf mold (soil for representative organic matter obtained by pulverizing, fermenting and aging leaves of first-class broad leaf/deciduous trees, manufactured by akagi horticulture corporation) was filled in the small box.

The other small box was filled with 600g of granular charcoal as an adsorbing material. The charcoal (manufactured by Ishiko coltd.) is rice grain-shaped, and is obtained by carbonizing Japanese cedar at 650 deg.C, and has specific surface area of 500m²(ii) in terms of/g. The oyster cultivation raft is hung down from the raft of the oyster cultivation farm. The suspension position of the treasure box is set to be 1m below the sea surface.

The concentration of iron in seawater was below the detection limit (0.01mg/L) before the treasure box was hung, and could not be measured in the form of a numerical value. However, the concentration of iron was 0.01 to 0.02mg/L, which was measurable after the treasure box was suspended. Further, although the measurement of the concentration of iron fulvate could not be performed, it is considered that: the concentration of ferric fulvate is increased as is seen from the increased concentration of iron in seawater.

After 2 months from the start of the set-up, a large amount of seaweed was produced around the oyster culture raft with the treasure house suspended. For oyster cultivation rafts at the same degree 50m away from the raft provided with the treasure house, the growth of algae is tiny. This shows the effect produced by the treasure box.

The phytoplankton biomass in seawater was measured. In the seawater in the raft with the treasure box, the plant plankton lives more than 2 times compared with the raft without the treasure box. The zooplankton lives more than 4 times. Thus, it was confirmed that: by arranging the treasure box according to the invention, plankton which becomes the feed of the oysters is increased.

After 6 months, the oysters in the raft with the treasure box were salvaged out and the mass was measured. The shelled oysters of the raft with the treasure box suspended in the raft have the mass increased by about 50% compared with the oysters in the raft without the treasure box. The quality of the shell-removed meat of oysters is also different to the same extent.

In addition, the following operations were performed: fishing out the treasure box, taking out the plankton proliferation material, and adding the iron material. This operation is very simple (each set of operation time: 5 minutes). When a conventional apparatus for bringing a graphite plate into contact with an iron plate is used, the replacement work is difficult and a long time is required (working time per set: 20 minutes). From these circumstances, it is clear that the replacement work is significantly simplified.

Example 2

Example 2 describes the following example: the same test was carried out in another oyster farm which is completely different from the installation environment of the treasure house such as water quality, water temperature, and seawater flow in example 1.

In the present example, a treasure box in which 4 treasure boxes (2 plankton proliferating materials and 2 boxes) are stacked as shown in fig. 2 was used. In the plankton proliferating material in a ratio of 4: a total of 1000g of a granular carbon material (charcoal obtained by high-temperature carbonization at 1200 ℃ C., average longest side of 2mm) and a granular iron material (average longest side of 2mm) were charged at a mass ratio of 1. Further, 400g of leaf mold (soil for representative organic matter obtained by pulverizing, fermenting and aging leaves of first-class broad leaf/deciduous trees, manufactured by akagi horticulture corporation) was filled in the small box.

The other small box was filled with 600g of granular charcoal as an adsorbing material. The charcoal (manufactured by IshikoCo. Ltd.) used was rice-grain-shaped, and was obtained by carbonizing Japanese cedar at 650 deg.C, and had a specific surface area of 500m²(ii) in terms of/g. The oyster cultivation raft is hung down from the raft of the oyster cultivation farm. The suspension position of the treasure box is set to be 1m below the sea surface.

The concentration of iron in seawater was below the detection limit (0.01mg/L) before the treasure box was hung, and could not be measured in the form of a numerical value. However, the concentration of iron was 0.01 to 0.02mg/L, which was measurable after the treasure box was suspended.

After 2 months from the start of the setting, the surface water in the center of the oyster culture raft with the treasure box suspended was collected, and the number of the zooplankton and the number of the cells of the animal plankton were measured. Seawater was also collected from oyster culture rafts 400m away from the raft to the same extent, and the number of zooplankton and the number of cells were determined.

After 2 months from the setting of the treasure box, the number of the vital information/cells of the phytoplankton of plants and animals was measured. In each case the value obtained for the raft with the treasure box suspended was greater (1.4 times the number of biotopes, 2.2 times the number of cells for the animal plankton).

Further, after 4 months of the setting, the number of the cells was 1.5 times and 2.3 times, and after 6 months, the number of the cells was 1.4 times and 2.2 times.

Thus, it was confirmed that: by arranging the treasure box according to the invention, plankton which becomes the feed of the oysters is increased and maintained.

After 6 months, the oysters in the raft provided with the treasure box are fished out, and the quality is measured. Confirming that: the shelled oysters of the raft with the treasure box suspended in the raft have the mass increased by about 50% compared with the oysters in the raft without the treasure box.

From the above results, it can be seen that: the treasure box of the present invention has excellent operation performance, and promotes the proliferation of plankton, so as to contribute to the improvement of the productivity of oyster cultivation.

In summary, it was confirmed that: according to the present invention, plankton in the environmental water can be effectively proliferated. In the present example, oysters are taken as an example, but similarly, shells such as scallops, clams, broughts, lobsters, mussels, turbans, clams, and pearl shells for pearl culture, fishes such as bass, sea breams, and serila, echinoderms such as sea cucumbers and sea urchins, arthropods such as shrimps, and crustaceans such as crabs can obtain similar effects. Furthermore, the productivity of wakame, seaweed such as kelp and sea sedge, which are one of the phytoplankton, can be improved by the present invention.

Claims

3. The plankton proliferation material according to claim 1 or 2, wherein the longest side of the granular carbon material is 20mm or less and has conductivity.

4. The plankton proliferation material according to any one of claims 1 to 3, wherein the adsorption material is any one of charcoal, activated carbon, activated clay, diatomaceous earth and zeolite or a mixture thereof and has a specific surface area of 200m²More than g.

6. The plankton proliferation material according to any one of claims 1 to 5, wherein said mesh-like container is formed of a mesh-like material made of any one of iron, plastic, paper, biodegradable fiber, biodegradable resin, and chemical fiber, or a composite material thereof.

7. A plankton proliferation apparatus comprising the plankton proliferation material according to any one of claims 1 to 6 and at least one set of small boxes of a net-like container filled with leaf mold, and the small boxes are stacked and placed in a larger net-like container.

8. The plankton proliferation apparatus according to claim 7, wherein the small box of said meshed container filled with leaf mold is a small box made of a meshed material made of any one of iron, plastic, paper, biodegradable fiber, biodegradable resin, and chemical fiber, or a composite material thereof.

10. A plankton breeding method comprising placing the plankton breeding device according to any one of claims 7 to 9 in environmental water for plankton breeding.

11. The plankton proliferation method according to claim 10, wherein said iron material is intermittently brought into contact with said carbon material in said mesh container by the flow of said ambient water to generate iron ions, iron fulvate is generated by the action of said iron ions and said leaf mold, and said iron fulvate is adsorbed on said adsorbing material, and iron fulvate generated by the action of said iron ions and said leaf mold and iron fulvate adsorbed on said adsorbing material are continuously supplied to said ambient water.