JP2002238398A - Artificial fishing bank member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reulitize a waste difficult to dispose of for a body surface of an artificial fishing bank by combination of iron oxide of an iron metal having a good degree of adhesion of algae, marine organisms, etc., to be baits of fishes with a porous charcoal having purifying functions or shells containing mineral components while paying attention to the reutilization of the waste difficult to dispose of. SOLUTION: This artificial fishing bank member 1 is attached to the surface of the body of an artificial fishing bank 2 and comprises a platy porous concrete containing the iron oxide, charcoal and shells.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial reef member using, as a raw material, iron rust iron oxide mainly generated in, for example, ships, and charcoal and shells after burning wooden construction waste. It is.

[0002]

2. Description of the Related Art Due to overfishing of fish, the number of inshore fish has decreased significantly, and the fisheries industry has changed from catching fisheries to breeding fisheries.
There has been considered an environment where fish farming and natural fish can live easily.As part of this, various artificial reefs where natural fish are easy to gather have been devised and actually installed on the seabed. I'm giving it.

[0003] Artificial fish reefs utilize the property that fish gather at raised places on the seabed, and are constructed using various materials in various places, and are used as a business to increase the production of fishing grounds.

[0004] The reason why fish gather on artificial reefs is thought to be shading effects, feed effects, instinct, eddy current effects, acoustic effects, erosion, and the like. The structure has not been determined. Currently, abandoned ships, concrete, wood, etc. are used as materials for artificial reefs.

[0005]

However, with the improvement of living standards, industrial development, mass production, mass consumption, etc., a large amount of waste is being generated one after another. Is becoming a problem.

For example, when an old concrete structure is demolished, a large amount of concrete waste is generated, a wooden waste is generated at a construction site, and a large amount of iron rust is generated at a shipyard. I have. In the diet, shells are generated as waste. The treatment of these wastes has become a social problem.

[0007] On the other hand, iron-based metals are said to have a good degree of adhesion to algae and marine organisms that serve as fish feed. In addition, it is known that charcoal is porous and has an adsorbing action and thus has a purifying function. In addition, shells are known to contain mineral components.

The present invention has been made in view of the above-mentioned problems, and has been made in order to solve the problems. The object of the present invention is to pay attention to the recycling of waste materials which are difficult to dispose, while paying attention to fish bait. By combining iron oxide of iron-based metal with good adhesion of algae and marine organisms, porous charcoal with purification function, and shells containing mineral components, waste materials that are difficult to dispose on the body surface of the artificial reef An object of the present invention is to provide a reusable artificial reef member.

[0009]

In order to achieve the above object, the present invention provides a member attached to the surface of an artificial reef, comprising a plate-shaped porous concrete containing iron oxide, charcoal and shells. Means.

In a preferred embodiment, the plate-shaped porous concrete is made of cement, cement,
Made of sand and gravel or recycled aggregate, iron oxide content is about the same as cement, charcoal content is about 5% of cement,
The shell content is about 10% of the cement.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described more specifically based on embodiments of the invention shown in the drawings. Here, FIG. 1 is a perspective view of the artificial fish reef member, and FIG. 2 is a partial side sectional view when the artificial fish reef member is attached to the main body surface of the artificial reef.

In the figure, an artificial reef member 1 is an artificial reef 2
A member detachably attached to the body surface of the
It is composed of plate-shaped porous concrete containing iron oxide, charcoal and shells. The artificial reef member 1 shown in the figure has a thick square or rectangular square shape, but is not limited to this shape, and may be, for example, a thick polygon such as a triangle, a pentagon, or a hexagon.

The plate-shaped porous concrete constituting the artificial reef member 1 is made of, for example, concrete, cement, sand and gravel or recycled aggregate, the iron oxide content of which is substantially the same as that of the cement, and the charcoal content. The amount is about 5% of the cement, and the shell content is about 10% of the cement.

The components of concrete consist of cement, sand, and gravel or recycled aggregate. For example, portland cement is used as the cement. As a raw material of the recycled aggregate, for example, concrete waste generated when demolishing a concrete structure is used, and concrete crushed to the size of the aggregate, for example, 20 mm to 5 mm, is used. You.

As a raw material of the iron oxide, for example, waste iron rust of iron plates and steel plates generated in large quantities in shipyards and the like is used, and powdered iron rust is used. The amount of iron oxide used is, for example, approximately the same as the amount of cement used. In addition, for example, powdered waste materials such as slag generated in a blast furnace are also used.

From the artificial fish reef member 1 containing iron oxide used in the concrete, iron ions are released into the seawater a, which can be efficiently grown while being absorbed by seaweed. In addition, the released iron ions react with phosphorus, which is a substance causing eutrophication, to become iron phosphate, which makes it possible to remove phosphorus.

Iron rust waste used as a raw material for iron oxide has been difficult to treat, but it can be effectively recycled by mixing it with concrete and using it as a part of the raw material for the artificial reef member 1. It becomes possible.

As a raw material of charcoal, for example, wooden waste materials generated in large quantities at construction sites and the like are used, and the wooden waste materials are burned and crushed to, for example, a size of 10 mm or less. The amount of this charcoal used is, for example, about 5% of the amount of cement used. In addition, what burned wood which is not a waste material to charcoal can also be used.

The artificial reef member 1 containing charcoal used in the concrete is porous and has a function of adsorbing impurities and the like contained in the seawater a and purifying it. It is possible to create an environment where fish can easily live, because impurities in the seawater are purified.

Although a large amount of wooden waste generated at a building site used as a raw material for charcoal has been difficult to treat, it is mixed with concrete and used as a part of the raw material for the artificial reef member 1. It becomes possible to recycle effectively.

For example, oysters, scallops, turtles, clams,
Shells that remain when eating clams and other shellfish are, for example, 1
What is pulverized to a size of 0 mm or less is used. The amount of shell used is, for example, about 10% of the amount of cement used.

From the artificial reef member 1 containing shells used in the concrete, calcium is released into the seawater a and reacts with the phosphorus in the seawater a to form calcium phosphate crystals to remove the phosphorus. It becomes possible. In addition, phosphorus retained as calcium phosphate can be used as a nutrient to grow efficiently while being absorbed by seaweed.

Although shell waste generated when eating shellfish has been difficult to treat, it can be effectively recycled by mixing it with concrete and using it as a raw material of the artificial reef member 1. Become.

The artificial reef member 1 is prepared by adding approximately the same amount of iron oxide as waste material made of powdered iron rust to cement, sand, and gravel or recycled aggregate as concrete components, and adding powdery and granular materials. About 5% of the cement is added to the waste charcoal, and about 10% of the shell of the powdery and granular waste is added to the cement. Water is added to the mixture and mixed with a mixer to knead it into dry concrete (north lamp). It is put into a mold and pressed at a predetermined pressure by, for example, press vibration to produce a porous concrete plate. For example, when the size of the artificial reef member 1 is 200 mm × 200 mm × 30 mm, it is formed by pressing with a force of 10 tons.

The artificial reef member 1 having the above-described structure
Is a plate-shaped porous concrete, and its surface has an uneven hole shape, so that it has good adhesion of algae and marine organisms serving as fish bait. Then, since algae and marine organisms serving as fish feed easily adhere to the fish, fish easily gather around the algae and marine organisms attached to the surface.

The artificial reef member 1 having the above-described configuration has the above-mentioned thick square or rectangular square shape. For example, a circular connection hole 11 for attachment to the main body surface is formed. When the size of the artificial reef member 1 is 200 mm × 200 mm × 30 mm, the diameter of the connection hole 11 is, for example, 20 mm.

On the other hand, for example, an insert nut as a connection receiving portion 21 for attaching the artificial reef member 1 is attached and fixed to the main body surface of the artificial reef member 2 on which the artificial reef member 1 is attached. For example, a tip end of a bolt as a connecting tool 22 inserted from the outside into the connecting hole 11 of the artificial reef member 1 is screwed into an insert nut as a connection receiving portion 21 on the main body surface of the artificial reef 2, and thereby the artificial reef member 1 is detachably attached to the body surface of the artificial reef 2.

The artificial reef 2 on which the artificial reef member 1 is attached is made of various materials such as concrete and steel, for example. The common feature is that the artificial reef member 1 is attached to the surface. Connection receiving part 2
1 is formed.

Next, a case where an artificial fish reef is installed using the artificial fish reef member based on the configuration of the embodiment of the present invention will be described below. Submerged artificial reef 2 in the designated sea area,
When installed on the seabed b, the artificial reef member 1 made in a factory or the like and having, for example, a square or rectangular square shape is transported in a state of a member without being attached to the vicinity of the site. Artificial reef 2 before sinking into the seabed b
Attach to the body surface of the.

The operation of attaching the artificial reef member 1 to the surface of the main body of the artificial reef 2 is performed as follows. That is, the artificial reef member 1 is attached to the surface of the artificial reef 2 so that the connection hole 11 of the artificial reef member 1 matches the connection receiving portion 21 of the main surface of the artificial reef 2, and a bolt as the connecting tool 22 is artificially attached. It is performed by inserting from the outside of the connection hole 11 of the fish reef member 1 and screwing the tip side thereof into an insert nut as the connection receiving portion 21 on the surface of the main body of the artificial reef 2 to tighten. Then, after attaching the artificial reef member 1 to the main body surface of the artificial reef 2, the artificial reef 2 with the artificial reef member 1 attached to the surface is submerged in a predetermined sea area.

When the depth of the seabed b on which the artificial reef 2 is installed is shallow, the work of attaching the artificial reef member 1 to the surface of the main body of the artificial reef 2 can be performed in the seawater a. In this case, when the artificial reef 2 is installed on the seabed b, the artificial reef member 1 is not yet attached to the main body surface thereof. There is no danger that the member 1 will come off, and the settlement work of the artificial reef 2 can be performed quickly.

When the artificial reef member 1 is attached to the surface of the artificial reef 2 in advance at the factory, the quality is excellent, but when transporting to the site is considered, due to its form, many parts are formed at once. It cannot be transported, which is uneconomical. During the transportation, the attached artificial reef member 1
There is a possibility that some of the parts may be easily damaged. On the other hand, in the case of mounting at the site, many members can be carried at one time, and there is little possibility of breakage during the transportation.

As described above, the artificial reef 2 installed on the seabed b is easily attached with algae and marine organisms on the surface of the artificial reef member 1 attached to the main body surface, which has the porous concave and convex holes. At first, algae and marine organisms grow and form on the surface of the artificial reef member 1 attached to the main surface of the artificial reef 2. As a result, fish feeding on the algae and marine organisms gather around the fish, and the function as the artificial reef 2 is sufficiently exhibited.

The iron oxide contained in the artificial reef member 1 allows iron ions to be released into the seawater a, which can be efficiently grown while absorbing the seaweed, and the released iron ions to be eutrophic. Reacts with the phosphorus in seawater a, which is the causative substance, to form iron phosphate and remove phosphorus.

Similarly, since the charcoal contained in the artificial reef member 1 is porous and functions to adsorb and purify impurities and the like contained in the seawater a, the seawater around the artificial reef member 1 The impurities are purified to create an environment where fish can easily live.

Furthermore, the shell contained in the artificial reef member 1 releases calcium into the seawater a, reacts with the phosphorus in the seawater to form calcium phosphate crystals, removes the phosphorus, and retains the calcium phosphate. The grown phosphorus can be used as nutrients for efficient growth while being absorbed by seaweed.

Further, the artificial reef member 1 is attached to the surface of the main body of the artificial reef 2 submerged on the seabed b. Since it can be replaced, the performance deterioration of the artificial reef 2 can be prevented.

It should be noted that the present invention is not limited to the above embodiment of the present invention, and it is needless to say that various modifications can be made without departing from the spirit of the present invention. For example, a large amount of waste material is generally used for iron oxide and charcoal. However, the present invention is not limited to this, and it goes without saying that a new material that is not a waste material can be used.

[0039]

As is apparent from the above description, according to the artificial reef member of the present invention, the artificial reef member is a member attached to the surface of the main body of the artificial reef, and comprises iron oxide, charcoal and shells. Since it is made of porous concrete in the form of a plate, it is possible to artificially create an environment in which algae and marine organisms serving as fish feed easily adhere and fish easily gather.

In addition, iron ions are released into seawater by the iron oxide contained in the artificial fish reef member, and can be efficiently grown while being absorbed by seaweed, and the released iron ions cause eutrophication. It reacts with phosphorus in seawater, which is a substance, to form iron phosphate and remove phosphorus.

In addition, since the charcoal contained in the artificial reef member is porous and functions to adsorb and purify impurities contained in the seawater, the seawater around the artificial reef member is purified. This creates an environment where fish can easily live.

Further, the shell contained in the artificial reef member releases calcium into the seawater, reacts with the phosphorus in the seawater to form calcium phosphate crystals, removes phosphorus, and retains phosphorus as calcium phosphate. As a nutrient, it can grow efficiently while absorbing it by seaweed.

Further, the artificial reef member is attached to the main surface of the artificial reef submerged on the seabed. If the artificial reef member wears, breaks, or flows out due to long-term use, replace it with a new one. The performance of artificial reefs can be prevented from deteriorating.

In addition, by mixing iron rust, wooden waste material, shell waste material, and the like, which were in trouble with the disposal process, into concrete and using them as a part of the raw materials for the artificial reef members, the waste materials can be prevented from polluting the environment. In addition to being able to be processed, the waste material can be effectively recycled, and it has an extremely novel and beneficial effect.

[Brief description of the drawings]

FIG. 1 is a perspective view of an artificial reef member showing an embodiment of the present invention.

FIG. 2 is a partial side sectional view showing an embodiment of the present invention, in which an artificial reef member is attached to a main body surface of the artificial reef.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Artificial reef member 11 Connection hole 2 Artificial reef 21 Connection receiving part 22 Connector a Seawater b Seabed

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2B003 AA01 BB02 BB03 BB06 BB07 CC04 DD01 DD04 DD08

Claims (2)

[Claims] 1. An artificial reef member attached to the surface of a main body of an artificial reef, comprising a plate-shaped porous concrete containing iron oxide, charcoal and shells. 2. The plate-shaped porous concrete is
Concrete is made of cement, sand and gravel or recycled aggregate, iron oxide content is almost the same as cement, carbon content is about 5% of cement, shell content is about 10% of cement, The artificial fishing reef member according to claim 1, wherein