JPH078131A - Growth and propagation of shellfish due to promotion of growth of useful sea weed and apparatus therefor - Google Patents

Abstract

PURPOSE:To efficiently grow and propagate shellfishes excellent in quality by setting a specified sea water purifying device on the sea bottom in a specific coastal area, purifying the polluted sea water and promoting growth of useful sea weeds. CONSTITUTION:Growth and propagation of shellfishes such as top shell and ear-shell are carried out by setting a sea water purifying device composed of a combination of plate-shaped pottery members 1 having a filtration effect and magnetic members having a shell gathering effect, e.g. ferrite-based magnets 2 on the sea bottom in a specified coastal area so that the pottery members 1 may be almost perpendicular to the direction of the stream of the sea water, purifying the polluted sea water and promoting growth of useful sea weeds such as tangle, sea oak and sea trumpet.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for growing and propagating shellfish associated with the promotion of growth of useful seaweeds, and a seawater purification device used for the method.

[0002]

2. Description of the Related Art Recently, useful marine algae in the coastal area have been growing poorly along with the progress of marine pollution. For this reason, the breeding and breeding of shellfish such as abalone and turban that feed on these useful marine algae. Has been hampered. For example, kelp and arame,
If a sea shore phenomenon such as sea slugs, agar beetle, or funari grows, it will cause serious damage and will take several years to recover, which is very feared. It has become widespread and is an obstacle to the growth of useful seaweeds. Therefore, it is difficult to collect shellfish, which threatens the lives of fishermen.

Although many techniques have been developed and proposed as countermeasures against these marine pollution, there are advantages and disadvantages, and at present the development of more effective techniques is awaited.

[0004]

DISCLOSURE OF THE INVENTION The present invention is directed to a method for purifying contaminated seawater in a predetermined sea area, promoting the growth of useful seaweeds, and growing and propagating shellfish that feed on them, and seawater used therefor. It proposes a purification device.

[0005]

The present invention is based on the fact that a ceramic material has a function of purifying contaminated seawater by filtering, that is, a so-called over-effect, and a magnetic material has a shell-collecting function (that is, a living thing is magnetic. It has been developed on the basis of two findings: that it has a habit of sensing and gathering.

That is, the first invention is useful for purifying contaminated seawater by submerging a seawater purification device constituted by combining a ceramic material and a magnetic material formed into a predetermined shape on the seabed in a predetermined coastal sea area. A method for growing and breeding shellfish associated with the growth promotion of useful seaweeds, which comprises growing and breeding shellfish by promoting the growth of seaweeds. A plurality of ceramic plates are placed in parallel with each other at a slight interval so that the plate surfaces are parallel to each other and fixed in a box form, and magnetic material pieces are placed between every several ceramic plates in the box form. The present invention provides a seawater purification device characterized by being attached.

In the first and second aspects of the invention, it is preferable that the ceramic material is a ferrite-based magnet having an overeffect and formed into a plate shape, and the magnetic material has a shell-shell function. is there.

Further, in the first aspect of the present invention, it is preferable that the seawater purifying device is submerged so that the filtering surface of the ceramic plate is at a right angle or close to the flowing direction of the seawater.

Next, the present invention will be described in detail. The tile-shaped ceramic plate used in the present invention is made of porcelain clay, porcelain clay, clay, etc., which are raw materials, and is molded into a predetermined plate shape. It is a ceramic plate that possesses (does not undergo glaze treatment) and has excellent durability such as corrosion resistance, seawater resistance, and weather resistance. As a result of various tests, the purification speed is slow, but the purification function of contaminated seawater is slow. I found out that The reason for this is not clear, but it is considered that the contaminated seawater is purified by the filter effect of the numerous fine pores of the ceramic, and other reasons.

[0012] Among the ceramic tiles, those having a magnetic property and a settling property have an excessive effect. Further, it is more effective that the surface of the ceramic plate used in the present invention is not smooth and has some irregularities such as grooves. If the ceramic plate becomes clogged and the over-effect is deteriorated, pull it up to the sea or wash it with a surface regenerator such as an underwater structure that uses a water jet on the seabed as it is and regenerate it semipermanently. Can be used for

Next, as magnetic materials, soft magnetic materials (supermalloy, carbonyl iron, silicon iron, permalloy, etc.), permanent magnets (KS steel, carbon copper, OP magnets, etc.), and sintered magnets (permanent magnet powder) are used. However, as a magnetic material used in the present invention, a ferrite magnet having a high coercive force was found to be most suitable from the viewpoint of the shell collecting function.

Ferrite magnets have MO.
Sintered magnetic material represented by Fe ₂ O _3, where M is a divalent metal ion such as Mn, Mg,
There are Cu, Ni, Co, Zn, Cd, Ba and the like. There are soft and hard ferrite magnets.
O. The hard magnetic material represented by 6Fe ₂ O ₃ is most suitable.

The above-mentioned {circle around (1)} is fixed in a box form by arranging a plurality of ceramic plates of substantially the same shape and dimensions with over-effect, arranged at a slight interval from each other so that the plate surfaces are parallel to each other. Then, a ferrite magnet piece formed in an appropriate size is attached and fixed between every several ceramic plates in the box mold so that the over-effect of the ceramic plates does not decrease.

There are various methods for attaching the ferrite magnet piece to the rectangular frame. For example, a through hole is provided in the center of the ferrite magnet piece, a U-shaped iron bar is passed through, and the ferrite magnet piece is fixed with a fixing metal fitting. The iron rod is supported and fixed, and the two iron frames on the upper side of the square frame are bolted and fixed by the screw portions provided at both ends of the iron rod. In the case of a set of 10 ceramic plates, the ferrite magnet pieces will be provided in 3 places in principle.

A large number of large-sized, medium-sized, small-sized seawater purification devices composed of the ceramic plate and magnetic material pieces produced as described above are manufactured, and all of these ceramic plate surfaces are placed on the seabed of the coastal predetermined sea area. Combine them so that they are at right angles to or close to the direction of flow of seawater, and connect them with bolts or chains to build a sink so that they will not be washed away by the ocean current.

By doing the above, the seawater in a predetermined sea area is purified by the over-effect of the ceramic plate to purify the marine environment, and the growth of useful seaweeds as a bait for shellfish such as abalone and thorns. It is promoted.

Further, due to the shellfish collecting function of the magnetic material attached to the seawater purifying device, shellfish senses magnetism and collects, and useful seaweeds are cultivated as baits, so that useful shellfishes can be efficiently collected. Of.

Then, the technique of the present invention is applied after the contaminated rock surface, for example, the rocky rock surface of the coastal area is regenerated by the technology described in Japanese Patent Publication Nos. 4-71595 and 5-11. By doing so, the effect is further improved. Next, examples of the present invention will be described.

[0019]

1 is a perspective view showing an example of a seawater purifying apparatus according to the present invention, and FIG. 2 is a perspective view showing an example in which a ferrite magnet piece is attached between ceramic plates. Three
A plurality of ceramic plates 1 (five in this embodiment) having the same shape and the same size are produced from ceramic plates having a groove of a fixed direction formed on one side of 00 mm × 300 mm × 12 mm (thickness), and the ceramic plates 1 are formed. Each of the ceramics is made up of iron frames 3 provided with fixtures that hold the corners of the ceramic plate 1 at predetermined intervals and are arranged in parallel so that the plate surfaces are parallel to each other with some intervals (for example, 40 mm equal intervals). The four corners of the plate 1 are fixed to form a box shape,
The iron frame 3 is tightened with bolts 4 (4 vertically, 4 horizontally) to form a box form 5.

Between every several ceramic plates 1 (every 3rd plate in this embodiment) of ceramic plates 1 arranged in parallel at equal intervals as described above,
As shown in FIG. 2, a magnetic material piece 2 (in this embodiment, a plate-like ferrite magnet piece) formed in a square plate shape is supported by U-shaped iron bars having both ends fixed to an iron frame 3, and the magnetic material piece is supported. 2 is attached so that it is located substantially in the center between the ceramic plates 1.

In this case, the shape of the magnetic material piece 2 may be an arbitrary shape such as a square shape or a circular shape, but it is important to attach it so that the over-effect of the ceramic plate 1 does not deteriorate.

In addition to the above, the ceramic plate 1 is, for example, 180
10 mm by molding to be mm x 180 mm x 12 mm
A large number of box-type purification devices using ceramic plates 1 of various sizes, such as one school, are prepared in accordance with the predetermined condition of the bottom of the sea. In this case, make the ceramic plate 1 surface of each purification device almost perpendicular to the flow direction of seawater, and arrange box-type purification devices of various sizes on the specified seabed in a combination of large, medium and small as planned. Install them, and connect them with bolts or chains to stack them or arrange them vertically and horizontally so that they will not be swept away by the ocean current.

[0023]

The present invention is configured as described above, and the effects thereof are listed below. (1) Since the ceramic plate that constitutes this device has a function of purifying contaminated seawater, contaminated seawater in a predetermined sea area is purified. (2) Since the surface of each ceramic plate is arranged substantially at right angles to the flow direction of seawater, the purification effect is promoted. (3) The ceramic plate used in the present invention is cheap in raw materials and relatively easy to manufacture such as molding and firing, so that it can be mass-produced at low cost, and even defective products can be used, thus effectively utilizing resources. (4) With the purification of seawater, kelp, squid, squid,
The growth and reproduction of useful seaweeds such as Tengusa is promoted. (5) Shellfish are collected by the shell-collecting effect of a magnetic material such as a ferrite magnet that constitutes this device. (6) Due to the above (4) and (5), the breeding and breeding of shellfish such as whales and abalone that feed on useful seaweeds are promoted, and therefore their collection efficiency is improved. It becomes a gathering nest. (7) This device has a simple structure and can be easily manufactured, and since the main ceramic material is inexpensive, it can be mass-produced at low cost, and the material can be used semipermanently.

[Brief description of drawings]

FIG. 1 is an explanatory exploded perspective view showing an example of a seawater purification device according to the present invention.

FIG. 2 is an explanatory perspective view showing an example in which a ferrite magnet piece is attached to the seawater purification device according to the present invention.

[Explanation of symbols]

 1-Ceramic plate 2-Ferrite magnet piece 3-Iron frame 4-Bolt 5-Box form 6-Supporting iron bar 7-Screw part 8-Fixing metal fitting 9-Holding fixture

Claims (5)

[Claims] 1. A seawater purification device configured by combining a ceramic material shaped into a predetermined shape and a magnetic material is deposited on the seabed in a predetermined coastal sea area to purify contaminated seawater and promote the growth of useful seaweeds. A method for growing and breeding shellfish that accompanies the promotion of growth of useful seaweeds, which comprises breeding and breeding shellfish by breeding. 2. The promotion of useful seaweeds according to claim 1, wherein the ceramic material has a filtering effect and is formed into a plate shape, and the magnetic material is a ferrite magnet having a shell-collecting function. Method of breeding and breeding shellfish. 3. The seawater purification device is submerged so that the surface of the ceramic plate is substantially perpendicular to the flow direction of seawater.
Alternatively, the method for growing and propagating shellfish according to 2 above, which promotes the growth of useful algae. 4. A plurality of ceramic plates having substantially the same shape and size and arranged in parallel with each other at a slight interval so that the plate surfaces are parallel to each other and fixed in the box form, and A seawater purification device characterized in that a magnetic material piece is attached between every several ceramic plates. 5. The seawater purification device according to claim 4, wherein the ceramic plate has a filtering effect, and the magnetic material pieces are plate-shaped ferrite magnets having a shell collecting function.