JPH03224427A - Algae-proofing fish preserve - Google Patents

Abstract

PURPOSE:To obtain an algae-proofing fish preserve effective in preventing the adhesion of algae with a simple wiring at a low power cost without causing environmental pollution by placing positive and negative electrodes to a fish preserve net, supplying electric power from a solar cell to electrolyze seawater and keeping the net from the adhesion of algae by the generated chlorine. CONSTITUTION:For example, a positive electrode and a negative electrode 4 are attached to the net of a fish preserve 1 composed of a double enclosures. DC current is supplied from a solar cell 5 to the electrodes 4 to effect the electrolysis of seawater between the positive and the negative electrodes. As an alternative method, a number of suspended parallel wires are used as the net and alternately connected to the positive and the negative electrodes of the cell.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a cage, and more particularly to a cage that prevents algae by using chlorine generated by electrolyzing seawater.

[Conventional technology]

Fish cages are used to feed fish in seawater.

Usually, pens are constructed by enclosing at least a certain area near the sea surface using fishing nets or bamboo.

[Problem to be solved by the invention]

The problem is that while a fish tank is immersed in seawater for a long period of time and floats, algae and shellfish adhere to it, blocking the mesh of the fishing net and impeding the flow of seawater, and increasing the weight of the fish tank, making it difficult to maneuver. There is. One possible method for preventing algae is to apply algaecide to the net, but since algaecide is a toxic substance, it poses a problem from the perspective of environmental pollution.

[Means to solve the problem]

In order to solve the above problems, the present invention provides positive and negative electrodes on the net of the fish tank, electrolyzes seawater to generate chlorine,
This chlorine prevents algae and the power for this electrolysis is supplied by solar cells.

[For production]

The chlorine generated by electrolysis can prevent algae, but supplying power from the ground to the offshore cages is problematic due to wiring and power costs, so solar cells were placed near the cages to supply power from now on. .

〔Example〕

Figure 1 shows the cage of the example. The size of the fish tank 1 is, for example, 20 m in diameter, and it does not necessarily have to reach the seabed 2 in the depth direction, as long as it is deep enough that the fish do not escape. The fish tank is given buoyancy by a float 3, and a net or enclosure 4 floats on the sea surface. An anchor (not shown) is used to prevent it from being washed away by seawater currents.

In such a cage 1, the solar cell 5 is placed near the cage 1 or inside the cage 1 using a float. On the other hand, the main body of the fish tank is, for example, a double enclosure 4 as shown in Fig. 2, and the nets of each city are used as the positive and negative electrodes, and DC current from the solar cell is supplied to these to connect the positive and negative electrodes. electrolyze seawater. Alternatively, as shown in FIG. 3, the net may be constructed of wire rods hanging in parallel, and every other wire rod may be wired as a positive electrode and a negative electrode. In this way, a conductive material is required to provide electrodes on the mesh, and stainless steel wire, carbon fiber, conductive synthetic fiber, etc. can be used.

The distance between the electrodes is, for example, about 10 cm in IOV. It is also possible to perform electrolysis intermittently to save power consumption and adjust the amount of chlorine generated.

〔Effect of the invention〕

According to the present invention, algae prevention can be achieved by electrolysis of seawater, and by supplying power from solar cells, wiring can be simplified and power costs can be eliminated.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an outline of the cage, and FIGS. 2 and 3 are schematic diagrams showing examples of the structure of the electrodes of the cage. 1... Fish tank, 2... Seabed, 3... Floating, 4... Electrode (enclosure), 5... Solar cell.

Claims (1)

[Claims] 1. An anti-algae cage characterized by installing positive and negative electrodes on the net used for the cage and supplying power from solar cells to electrolyze seawater to generate chlorine to prevent algae.