JPH0892933A - Preventive method of adhesion of aquatic organism - Google Patents

Abstract

PURPOSE: To prevent or reduce adhesion onto the surface of a structure of an aquatic organism by effecting energy having the repellent action of the aquatic organism such as magnetic energy into a water area, in which there is the structure brought into contact with sea water or fresh water. CONSTITUTION: Underwater suspended membranes 4 are mounted to the lower sections of floating bodies 3, thus forming pollution diffusion preventive fences 2. A filled ground 1 is surrounded by a plurality of the fences 2. One kind or two kinds or more of repellent energy generators 5 generating magnetic, electromagnetic, ultrasonic, sound wave or other energy having the repellent action of an aquatic organism are arranged at proper places in water on the inside or outside of a surrounded water area Accordingly, the adhesion or excess adhesion of the aquatic organism on the surfaces of the underwater suspended membranes 4 can be prevented or reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for preventing or reducing the attachment of aquatic organisms to the surface of an object and / or a structure used in contact with seawater or freshwater, and an aquatic organism attachment preventing ability. Or has the ability to reduce adhesion,
It relates to equipment used in water bodies such as seawater and fresh water.

[0002]

2. Description of the Related Art Fences such as oil fences, pollution prevention fences, nets and blocks for aquaculture of seafood, seaweed aquaculture such as kelp and seaweed, sea buoys, light buoys, buoys, fish nets, revetments, and wave breaking For objects and structures used in contact with seawater and / or freshwater such as blocks, quays, piers, piers, power plants, and ship bottoms, especially for objects and structures used in long-term contact with seawater, seawater During long-term contact with freshwater and / or freshwater, various aquatic organisms such as blue mussels, barnacles, oysters, anemones, sea spiders, oysters, ascidians, and algae such as Ulva and diatoms adhere to the surface. And come to live.

For example, fences, route buoys, light buoys,
In buoys, the above-mentioned aquatic organisms attach to underwater drooping membranes (curtains) of fences, sea buoys, light buoys, buoys and other parts in contact with seawater and freshwater, and their mooring ropes. The weight increases significantly and it sinks,
Damage occurs. In addition, the various aquatic organisms described above also adhere to seawater intakes, drainage ports, and water-conducting parts of thermal power plants and factories, which interfere with water intake, drainage, water-conducting, etc. Also, in fishnets and sacred fish, subsidence due to weight increase due to attachment of aquatic organisms,
Damage and damage to seafood are likely to occur, and it is difficult to cultivate useful seaweed such as kelp, seaweed, and seaweed every year using nets and blocks for seaweed cultivation. Further, when aquatic organisms adhere to the bottom of the ship, various problems such as water flow resistance and deceleration due to increase in weight occur.

As a means for solving the above-mentioned troubles due to the attachment of aquatic organisms, the amount of aquatic organisms attached to the surface of the above-mentioned objects or structures used in seawater and / or freshwater reaches a predetermined amount or more. When you do, mechanically scrape off the aquatic organisms that adhere to it, for fences, etc., cut the underwater drooping film (curtain part) under the floating body and replace it with a new one, and replace the mooring rope with a new one. Although the method is adopted, there is a drawback that it takes a great deal of time, labor, and cost. In addition, depending on the object, the object itself may be damaged by the scraping work of the aquatic organisms, making it unusable.

Therefore, fences, cages, aquaculture nets, fish nets, nautical buoys, light buoys, etc. to which a large amount of aquatic organisms are attached,
Objects such as buoys and ropes are often discarded as they are without scraping aquatic organisms, which leads to the generation of large amounts of industrial waste. Also, when aquatic organisms attached to the surface of objects and structures used in water are scraped off, the amount of aquatic organisms such as shellfish and seaweeds that are scraped off is usually quite large, and this becomes waste. As a result, seawater and fresh water are contaminated, and it is currently difficult to handle them when they are taken out of water and discarded. And, for example, in oil fences, sludge diffusion prevention fences, and other water quality improving materials used for improving and purifying the water environment, the pollutants and pollutants collected or purified by these water quality improving materials In some cases, the amount of water quality improvement materials such as fences discarded due to the attachment of aquatic organisms may be greater than the amount, and from a global perspective, this would lead to environmental improvements. Instead, there are many contradictions that the amount of waste increases.

The amount and rate of attachment of aquatic organisms to objects and structures used in seawater and / or freshwater vary depending on the aquatic environment and the type of objects used in water, but the bottom of the floating body is polluted. In the case of oil fences and pollution diffusion fences with hanging protective films (curtains), it is possible for aquatic organisms to adhere to the curtains hanging in seawater to a thickness of 10 cm or more in one year underwater experiments by the applicant. Have been observed in. And in those fences, as the hanging length of the curtain part in water increases, the surface area of the curtain part existing in the water increases, so that the total amount of aquatic organisms attached to the curtain part increases and becomes large. A load is applied, and sinking and breakage are more likely to occur. For example, in an experiment using a pollution diffusion prevention fence handled by the applicant's company, when the hanging length of the curtain portion in water is 2 m, 3 m, and 5 m,
When the attachment thickness of aquatic organisms on the surface of the curtain reaches about 33 cm, about 22 cm and about 13 cm,
Problems such as sinking and damage of fences will occur, and it will be necessary to scrape off aquatic organisms attached to the curtain, cut the curtain, and replace it.

From the above points, as a measure for preventing aquatic organisms from adhering, tributyltin oxide,
Objects that are used underwater, such as coatings containing organotin compounds such as triphenyltin oxide on the surface of ship bottoms, fishnets, fences, cage nets, buoys, light buoys, buoys, revetments and other structures. It has heretofore been widely practiced to directly blend the above-mentioned organotin compound into a raw material for producing. However, organic tin compounds are dissolved in seawater and fresh water, causing pollution of water quality and sludge,
Various malformations occur in seafood that ingested organotin compounds, and when the organotin compounds accumulated in the body of seafood are ingested by humans through the food chain, they have a great adverse effect on the human body. The use is totally prohibited.

Therefore, benzothiazoles, thiophthalimides, sulfonylpyridines, iso-sulfates, which have low toxicity to living organisms and have been conventionally used as pesticides, fungicides, antifungal agents, etc. instead of highly toxic organotin compounds. Organic sulfur compounds such as thiocyanates and organic nitrogen compounds of urea series are used as biofouling inhibitors, and these compounds are blended in coating materials such as paints and used in contact with seawater or fresh water. It has come to be applied to the surface of various objects, or directly compounded with these compounds in raw materials constituting fishnets, ropes, fences and the like.

However, the above-mentioned biofouling preventives such as organic sulfur compounds and organic nitrogen compounds are gradually dissolved in water from the paint or the object during use, so that the aquatic biofouling preventive ability does not last long and is short-term. It has the drawback of being easily lost. Moreover, although the biofouling inhibitors such as the organic sulfur compounds and the organic nitrogen compounds described above are less toxic than the organotin compounds, they are somewhat toxic and are completely safe for organisms such as seafood and humans. However, the problem remains that these compounds leach into the water, thereby causing pollution of the aquatic environment.

[0010]

The object of the present invention is to prevent aquatic organisms from adhering to the surface of an object and / or a structure used in contact with seawater and / or freshwater over a long period of time. It is an object of the present invention to provide a method that can be smoothly prevented or reduced and a facility therefor. The object of the present invention is to prevent an object or the like used in contact with seawater and / or freshwater from becoming unusable in a short period of time due to the attachment of aquatic organisms and being discarded as industrial waste. Then, it is to provide a method for enabling effective use over a long period of time and a facility therefor. Further, the object of the present invention is to prevent or reduce the attachment of aquatic organisms to the surface of an object and / or a structure used in contact with seawater and / or freshwater, thereby reducing the aquatic organisms attached to those surfaces. It is an object of the present invention to provide a method capable of eliminating the need to perform scraping work on living things, or reducing the number of scraping works, and a facility therefor. Furthermore, the object of the present invention is to use the chemical substance such as an anti-biofouling agent that may pollute the water environment of seawater, rivers, lakes and marshes, or to use the amount of the chemical substance when using the chemical substance. Provided is a method for reducing the amount of water and / or fresh water, and a method for smoothly preventing or reducing the adhesion of aquatic organisms to the surface of an object and / or a structure used in contact with fresh water, and a facility therefor. It is to be.

[0011]

When the present inventor continued to study in order to achieve the above-mentioned object, in an area of water where an object and / or a structure used in contact with seawater and / or fresh water exists, When energy having a repellent effect on aquatic organisms, such as magnetic energy, electric energy, electromagnetic energy, ultrasonic energy, or sonic energy, is applied, the aquatic organisms hate those energies to exist in seawater and / or freshwater. It becomes inaccessible to the surface of an object and / or a structure, and the aquatic organism adhesion-preventing compounds such as benzothiazoles, thiophthalimides, sulfonylpyridines and isothiocyanates described above are not used, or their compounds are not used. Even with reduced usage, aquatic organisms and / or It is prevented or reduced to adhere to the construct, and completed the present invention conceive that the purpose described above can be very effectively achieved.

[0012] Therefore, the present invention provides a magnetic energy, an electrical energy, an electromagnetic energy having a repellent action of aquatic organisms in a body of water in which an object and / or a structure used in contact with seawater and / or freshwater are present.
A method of applying ultrasonic energy, sonic energy, low-frequency energy and / or other energy to prevent or reduce adhesion of aquatic organisms to the above-mentioned object and / or structure.

The present invention provides an energy source that emits magnetic energy, electric energy, electromagnetic energy, ultrasonic energy, sonic energy, low frequency energy and / or other energy having a repellent action for aquatic organisms, to seawater and / Or placed on the surface of an object and / or construct used in contact with fresh water, contained within said object and / or construct, or in the body of water in which said object and / or construct is present It is a water area facility having the ability to prevent or reduce the adhesion of aquatic organisms, which is characterized by being placed.

The term "object and / or structure used in contact with seawater and / or freshwater" as used in the present invention means used in contact with water under aquatic environment in seawater and / or freshwater. Object and / or structure that is not desirable to have aquatic organisms attached to its surface or the like, or an object to which aquatic organisms may slightly attach but excessively undesirable It may be any and / or construct, and is not particularly limited. Examples of such objects and / or structures include oil fences to prevent the diffusion of oil on the water, suspended particles generated during civil engineering work (land reclamation work, etc.) on or around the water. Fences such as anti-pollution fences to prevent diffusion into water areas; various water purification facilities, equipment and devices used in seawater and / or freshwater; pans, kelp, wakame used for aquaculture of seafood Nets, blocks, ropes, rods used for aquaculture of seaweeds such as seaweed, seaweed, etc .; buoys for lanes, buoys, ropes; wave-dissipating blocks, quays, piers, piers; thermal power plants, chemical plants and other factories A structure having a seawater intake, a drainage port, a water conveyance section, etc .; a fish net;

In the present invention, the energy having a repellent effect for preventing or reducing the adhesion of aquatic organisms to the surface of the above-mentioned objects or structures existing in water is, for example, magnetic energy, electric energy, Energy such as electromagnetic energy, ultrasonic energy, sonic energy, vibration energy, light energy, and low frequency energy can be used, and two or more kinds of these aquatic organism repellent energy can be used alone. You may use together. And, in the magnetic energy, electric energy, electromagnetic energy, ultrasonic energy, sonic energy, vibration energy, light energy, low-frequency energy, etc., which has the repellent action of aquatic organisms described above, the strength of the energy effective in repelling aquatic organisms. Range of
It is desirable to select and use the frequency range. In that case, as an energy source that releases energy having an aquatic organism repellent action, one that can exert energy having an aquatic organism repellent action over a predetermined surface area of an object or structure existing in water To use
It is desirable because it can effectively prevent or reduce the adhesion of aquatic organisms to the surface of objects and structures existing in water.

Examples of energy sources that emit energy having a repellent effect on aquatic organisms are a magnetic generator, an electric generator, an electromagnetic generator, an ultrasonic generator, a sound generator, a light generator, a vibration generator, Magnetic substances (eg iron, cobalt, nickel, gold, charcoal, etc.), magnetic materials produced using these magnetic substances (eg magnetic rubber, magnetic sheets, magnetic particles, magnetic lumps, magnetic rods, magnetic wires, magnetic materials) Fibers etc.) and the like. The above-mentioned energy sources may be used alone or in combination of two or more. Among them, magnetic generators, electromagnetic generators, magnetic substances magnetic materials, ultrasonic generators, sound generators, etc. are used to prevent or reduce the adhesion of aquatic organisms to the surface of objects and structures existing in water. Especially effective.

An energy source that emits energy having a repellent action on aquatic organisms, so long as the aquatic organism repellent energy released therefrom can prevent or reduce the adhesion of aquatic organisms to the surface of an object or a structure, etc. The arrangement position, the usage, etc. may be any, and are not particularly limited, and may be used according to each water environment. For example,
An energy source that has an aquatic repellent effect can be attached directly to the surface of an object or structure that exists in water, depending on the size and type of the aquatic repellent energy.
Whether coated or coated on the surface, or used as part of the raw material for the production of objects used in water (for example, kneading magnetic powder into the raw material for manufacturing fishnets, fences, etc. (For example, in the case of manufacturing in), they may be placed in water at a predetermined distance from the surface of an object or structure existing in water, or some of them may be combined.

Further, among the objects and structures used in contact with seawater and / or fresh water, from the viewpoints of water purification, promotion of the growth of useful organisms, etc. It is desirable for some aquatic organisms to adhere to the extent that they do not cause subsidence or damage to objects or structures. For example, fences such as pollution prevention fences, various water purification used in seawater and / or freshwater. In facilities and equipment, blocks, reefs, nets, etc. used for aquaculture of seaweeds such as kelp, seaweed, and seaweed, some aquatic organisms contribute to purification of water and growth of useful seaweeds such as seaweed, seaweed, and seaweed. It is known.
Therefore, in the case of such objects and structures, at first, after a certain amount of aquatic organisms are made to adhere and inhabit the surface of those objects and structures, in order to prevent further aquatic organisms from adhering, Energy having a repellent effect on aquatic organisms may be applied, or the energy source having a repellent effect on aquatic organisms may be intermittently operated while observing the state of attachment of the aquatic organisms to the surface of those objects. You may make it adjust so that the adhesion amount of may not become excessive. Therefore, in the present invention, the type and purpose of use of objects and structures existing in seawater and / or freshwater,
Depending on the state of attachment of aquatic organisms, the season, weather conditions, etc., the energy having a repellent action for aquatic organisms may be continuously or intermittently acted on.

As an energy source that emits energy having a repellent effect on aquatic organisms, devices such as a magnetic generator, an electromagnetic generator, an electric generator, an ultrasonic generator, a sound generator, a light generator, and a vibration generator are used. When used, these devices can be operated using ordinary commercial power, self-generated power, etc.
It may be performed using a dry cell or other power generation device. For example, when a solar cell, a solar power generation device, a wave power generation device, etc. are incorporated into the above-described magnetic generation device or other aquatic organism repellent energy generation device to operate the aquatic organism repellent energy generation device, Using the natural clean energy (light and wave) under the aquatic environment where the bio-repellent energy generator is installed, the aquatic organisms can be attached to the surface of objects and structures existing in seawater and / or freshwater. It can be prevented or reduced.

Further, in the present invention, together with the above-mentioned energy source having a repellent action on aquatic organisms, in some cases, conventionally known adhesion preventive agents for aquatic organisms, which have little adverse effect on aquatic organisms and humans, for example, the above-mentioned benzothiazole. , Thiophthalimides, sulfonylpyridines, isothiocyanates and other organic sulfur compounds, urea and nicotinic acid amide and other organic nitrogen compounds, xanthatin and other sesquiterpenes that have been reported to be able to repel marine organisms , Catechins and other polyphenols, glycosylated glycosides, complex lipids and other extracts from plants [[Chemistry and Industry] Vol. 44, No. 4, 666 to 670 (19
91); "coloring material" 64 (7), p464-470 (19).
91)] may be used together, and in this case, the amount of the aquatic organism adhesion-preventing agent used can be reduced as compared with the conventional case.

Although not limited thereto, the present invention is specifically illustrated by the figures. Figure 1 shows an example of a case where landfill work is carried out in water such as seawater. Sludge and pollutant particles generated by landfill work do not spread into seawater in the sea area around the landfill site 1. In order to ensure that the landfill 1 is
Surrounds. In that case, generally, the pollution diffusion prevention fence 2 has a submerged film (curtain portion;
It allows water to pass through but not pollutant particles) 4. Landfill work in seawater is usually 1
From the long term of more than a year, the surface of the curtain portion 4 of the pollution diffusion prevention fence 2 has the above-mentioned mussels, barnacles, oysters, sea anemones, sea sponges,
Various aquatic organisms such as kaikai, squirts, moss and diatoms gradually attach and accumulate. When the thickness of the aquatic organisms attached to the surface of the curtain portion 4 exceeds a predetermined value, the pollution diffusion prevention fence 2 is sunk or damaged,
The pollution diffusion prevention fence 2 loses its pollution diffusion prevention function.

Therefore, in the present invention, as shown in FIG.
In order to prevent or reduce the adhesion of aquatic organisms to the surface of the curtain portion 4 of the pollution diffusion prevention fence 2 described above, an appropriate place in the water inside and / or outside the water area surrounded by the pollution diffusion prevention fence 2 In addition, one or more types of devices that generate magnetic energy, electromagnetic energy, ultrasonic energy, sonic energy, or other energy having a repellent effect on aquatic organisms (hereinafter, those energy sources are collectively referred to as “repellent energy generation”). Device 5)) to prevent or reduce the adhesion of aquatic organisms to the surface of the curtain portion 4.

In that case, the number of repellent energy generators 5 to be placed in the water, the location of the repellent energy generators 5 and the like are determined by the kind of repellent energy generated from the repellent energy generator 5, the strength of the repellent action of the aquatic organisms, and the diffusion of pollution. It can be appropriately determined according to the surface area of the curtain portion 4 of the prevention fence 2 in water. The type of the repellent energy generating device 5 is configured such that the energy having the repellent action of aquatic organisms generated from the repelling energy generating device 5 effectively acts on the surfaces of all the curtain portions 4 of the pollution diffusion preventing fence 2. , It is desirable to select the intensity of generated energy, the number, and the location. The operation of the repellent energy generator 5 may be performed by normal commercial power as described above, or may be performed by using an appropriate storage battery, dry battery, power generator, etc., such as a solar battery, a solar power generator, a wave power generator, etc. When used, clean energy can be utilized to prevent or reduce the attachment of aquatic organisms, such as to the surfaces of objects and structures present in seawater and / or freshwater. In addition, since it may be desirable from the viewpoint of water purification that some aquatic organisms adhere to the surface of the curtain part 4 of the pollution diffusion prevention fence 2, some aquatic organisms adhere to the surface of the curtain part 4. After that, the repellent energy generator 5 is activated to prevent the aquatic organism from further adhering, or the adhering amount of the aquatic organism is appropriate while observing the adhering state of the aquatic organism to the surface of the curtain portion 4. The repellent energy generation device 5 may be operated intermittently while being kept within the range so that the aquatic organisms are not excessively attached and the pollution diffusion prevention fence 2 is not submerged or damaged.

Then, the repellent energy generator 5 is not directly attached to the surface of an object existing in water (such as the pollution diffusion prevention fence 2 in FIG. 1), etc., but is independently arranged in the water area near the object. When the method shown in 1 is adopted, the extremely simple work of simply arranging the repellent energy generation device 5 in a water area near an object or a structure already existing in seawater and / or freshwater is performed. It is possible to smoothly prevent or reduce aquatic organisms from adhering to the surface of an object or a structure existing in. Moreover, it is possible to independently install, dispose, remove, and replace an object (apparatus) for water purification such as the pollution diffusion prevention fence 2 and dispose or dismount the repellent energy generator 5 independently. It is convenient.

Next, FIG. 2 shows a magnet, a magnetic sheet, etc. for generating magnetic energy having a repellent effect on aquatic organisms on the surface of the curtain portion 4 of the fence 2 such as an oil fence or a pollution diffusion fence, which is suspended in water. It is a figure which shows an example at the time of directly attaching the magnetic body 6 of. Also in the case of the method shown in FIG. 2, magnetic energy is radiated from the magnetic body 6 attached to the surface of the curtain portion 4 to prevent or reduce aquatic organisms from approaching the curtain portion 4. The attachment of organisms can be prevented or reduced. When performing the method of FIG. 2,
The mounting position, the number, the type, etc. of the magnetic body 6 can be appropriately determined according to the strength of the magnetic energy emitted from the magnetic body 6, the state of the water area in which the fence 2 is arranged, and the like.

Further, when the method as shown in FIG. 2 is directly attached to the surface of an object or a structure existing in seawater and / or fresh water, the magnetic body 6 or the like as shown in FIG. Instead of attaching to the curtain portion 4, a coating layer of magnetic paint or the like may be provided on all or part of the surface of the curtain portion 4 (not shown). In that case, the content of the magnetic substance in the magnetic paint depends on the strength of the magnetic force released from the magnetic paint, the state of the water area where the fence 2 is installed (particularly the degree of adhesion of aquatic organisms in the water area), etc. You may select appropriately.

In any of the above cases, if the weight of the magnetic material 6 attached to the curtain portion 4 of the fence 2 or the magnetic paint coating the curtain portion 4 becomes too large, the fence 2 is likely to sink or be damaged. , It is necessary to be careful so that such trouble does not occur.

Furthermore, FIG. 3 shows a fish net 8 [(a) in FIG. 3] coated with a magnetic paint 7 containing magnetic powder, or a yarn (synthetic resin yarn, etc.) produced by mixing magnetic powder. It is a figure which shows an example of the fish net 8 [(b) of FIG. 3] manufactured using 9. Also in the case of the fish nets 8 of FIGS. 3A and 3B, the magnetic energy generated from the fish nets 8 has a repellent effect on aquatic organisms, and the aquatic organisms are
To be prevented or reduced. Also, although not shown in the drawing, in the case of ropes and cages used in seawater and / or freshwater, magnetic paint is applied to the surface or raw materials containing magnetic substances are used as in the case of FIG. By forming a rope or cage, it is possible to obtain a rope or cage in which adhesion of aquatic organisms is prevented or reduced.

Further, FIG. 4 shows that repellent energy is applied to the seawater intake, the water transfer part, etc. in the structure for intake and drainage of seawater used in contact with seawater in thermal power plants, chemical plants, other factories and the like. It is a figure which shows an example in case the generator 5 is arrange | positioned. Generally, thermal power plants, chemical plants,
In other factories, etc., the aquatic organisms such as shellfish and seaweed adhere to the seawater intake, drainage, water transfer part, etc. of the above-mentioned structure used in contact with seawater, and the intake and discharge of seawater, It is extremely easy to cause troubles such as installation being significantly disturbed. Therefore, in those structures, work to scrape off the aquatic organisms adhering to those parts is regularly performed while observing the adhering state of the aquatic organisms at the seawater intake, drainage port, water transfer part, etc. The scraping work is a heavy burden.

In the present invention shown in FIG. 4, as in the case of FIG. 1, the seawater intake (conducting part) of a structure used in contact with seawater in a thermal power plant, a chemical factory, or another factory. ) In order to prevent or reduce aquatic organisms from adhering to the water intake port (water transfer part) 10 or the drainage port by installing the repellent energy generation device 5 in the water near the water drainage port 10 or the drainage port (not shown). It was done. As a result, it is possible to omit the work of scraping off aquatic organisms adhering to the seawater intake (conducting part) 10 and the drainage part, or to reduce the number of times of scraping work, thereby taking in and discharging seawater. The amount of work in business is greatly reduced.

In FIG. 4, the repellent energy generating device 5 is arranged in the water near the seawater intake port (water introducing part) 10 and the drainage port, but instead of this, the seawater intake port (water introducing part) is arranged.
The surface of 10 and the drainage port may be directly formed from a material (for example, a magnetic material) capable of releasing energy having a repellent effect on aquatic organisms.

[0032]

According to the method and equipment of the present invention,
It is possible to smoothly prevent or reduce aquatic organisms from adhering or excessively adhering to the surface of an object and / or a structure used in contact with seawater and / or freshwater over a long period of time. it can. Therefore, according to the present invention, it is possible to omit or reduce the work of scraping off aquatic organisms adhering to the surface of the object and / or the structure existing in water, and to use the object in water. It is possible to omit or drastically reduce replacement, removal work, and disposal associated with the attachment of a part of aquatic organisms. As a result, it is possible to prevent the problem of environmental pollution due to the disposal of a large amount of waste aquatic organisms caused by scraping off the aquatic organisms attached thereto, and the disposal of articles to which the aquatic organisms are attached. Further, according to the method and equipment of the present invention,
Seawater, rivers, lakes and marshes that do not use chemical substances such as biofouling agents that may pollute the water environment, or when using the chemical substances, the amount can be greatly reduced, From this point as well, it is possible to prevent pollution of the water quality environment.

[Brief description of drawings]

[Fig. 1] Underwater drooping film (curtain part) of a pollution prevention fence used in landfill work performed in seawater, etc.
FIG. 3 is a diagram showing an example in which an aquatic organism repellent energy generator is arranged in a water area in the vicinity of a region where the aquatic organisms are prevented from or excessively attached to the surface of the curtain portion of the fence. .

FIG. 2 is a diagram showing an example of a case where a magnetic material that generates magnetic energy having a repellent action for aquatic organisms is directly attached to the surface of a curtain portion that hangs in water of fences such as oil fences and pollution diffusion prevention fences. Is.

FIG. 3 is a diagram showing an example of a fish net provided with a magnetic energy releasing ability having a repellent effect on aquatic organisms.

[Fig. 4] Repellent energy for aquatic organisms near the seawater intake (conducting part) of a structure that takes in and drains seawater used in contact with seawater in thermal power plants, chemical plants, and other plants. It is a figure which shows an example at the time of arranging a generator.

[Explanation of symbols]

 1 Landfill 2 Fouling diffusion prevention fence or other fence 3 Floating body 4 Underwater drooping film (curtain part) 5 Repellent energy generation device for aquatic organisms 6 Magnetic substance 7 Magnetic paint 8 Fish net 9 Thread produced by mixing magnetic powder 10 Seawater intake (conducting part) in the structure

Claims (4)

[Claims] 1. A magnetic energy, an electrical energy, an electromagnetic energy, an ultrasonic energy, or a sound wave having a repellent action of an aquatic organism in a body of water used in contact with seawater and / or freshwater and / or a structure where a structure is present. A method of applying energy, low-frequency energy and / or other energy to prevent or reduce adhesion of aquatic organisms to said objects and / or structures. 2. One or more of magnetic energy, electric energy, electromagnetic energy, ultrasonic energy, sonic energy and low frequency energy is used as the energy having a repellent action for aquatic organisms. Method. 3. An energy source which emits magnetic energy, electric energy, electromagnetic energy, ultrasonic energy, sonic energy, low frequency energy and / or other energy having an aquatic repellent effect is referred to as seawater and / or freshwater. It may be placed on the surface of the object and / or the construct used in contact, contained within said body and / or construct, or placed in the body of water in which said body and / or construct is present. Water area facilities that have the ability to prevent or reduce the adhesion of characteristic aquatic organisms. 4. An energy source capable of emitting one or more of magnetic energy, electric energy, electromagnetic energy, ultrasonic energy, sonic energy and low frequency energy as an energy source having an aquatic organism repellent action. The water area facility according to claim 3, wherein