JPS5932518B2 - fishing net cleaning agent - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cleaning agent for fishing nets contaminated by adhesion and growth of seaweed.

Seaweed that lives in the water often attaches to fishing nets and grows, causing various problems. Conventionally, anti-algae agents have been used to prevent the growth of contaminant organisms that cause these problems. In general, it has been known that the main component is a tin compound such as tributyltin or triphenyltin, to which petroleum-based resin or petroleum-based solvent is added.

However, this anti-algae agent is very expensive, and when the surface of the fishing net is treated by depping with the algae-preventing agent composition, the solvent contained in it is a harmful organic substance, so it is necessary to wear a mask etc. while working. The disadvantages are that it requires people to wear clothes, that it must be done in a place without open flames, and that it takes an extremely long time.

In terms of effectiveness, the above-mentioned algaecides are relatively ineffective against green laver, etc. Therefore, fish with green laver, etc. attached to them are picked up, which rots and becomes a source of pollution on land, such as the generation of foul odors and maggots. It also has disadvantages such as causing damage to the fishing net. As a result of intensive research aimed at solving these drawbacks, the present invention was developed based on the discovery that hypochlorite has an extremely excellent killing and removal effect on all kinds of contaminants that adhere to and breed in fishing nets. In the completed product, the present invention adds hypochlorite as the main component, and in addition, sodium maleate, sodium polyacrylate, CM
The present invention provides a fishing net cleaning agent comprising an aqueous solution containing a flocculant selected from C sodium salts.

Here, various water-soluble salts such as sodium salts and potassium salts can be used as the hypochlorite, and the hypochlorite may be used after being dissolved in either fresh water or seawater.

Furthermore, the concentration of hypochlorite is selected depending on the type of organisms attached to fishing nets, the amount of seawater that adheres to fishing nets pulled from seawater, etc., but it is usually used as an aqueous solution of about 0.5 to 20 wt%. is preferred.

By spraying or immersing the hypochlorite aqueous solution or seawater solution prepared in the above manner onto fishing nets with contaminated organisms, the contaminated organisms attached to the fishing nets can be killed and removed in an extremely short period of time. can. Furthermore, hypochlorite is available at low cost, is non-toxic as recognized as a food additive, and decomposes quickly, so it does not cause problems such as marine pollution.

The amount of the aqueous solution of the present invention to be sprayed onto the fishing net is appropriately selected depending on the type of attached organisms, the amount of seawater adhering to the fishing net, etc. However, as in the present invention, in addition to hypochlorite, a flocculant, preferably a coagulant, is added to the water. By adding 0.01 to 3.0 wt% of hypochlorite, when sprayed on fishing nets, aggregates will form on the surface of the net, so the amount of spraying can be reduced, and the use of hypochlorite can be reduced. Only a small amount is required.

Here, as the flocculant, organic acid polyvalent metal salts such as sodium maleate, polymeric polyvalent metal salts such as sodium polyacrylate, CMC sodium salt, etc. can be used.

Examples of this invention will be shown below.

Example 1 The following composition example in which sodium polyacrylate was added to an aqueous sodium hypochlorite solution was tested for the amount of adhesion to fishing nets, the amount of spraying, and the killing and removal effects of contaminant organisms.

The removers having the above compositions (3) to (8) were sprayed from the soil of the organisms attached to the fishing nets, and after the spraying, the fishing nets were placed in the sea for 1 minute to observe the resuscitation of the contaminated organisms.

The results are shown below.

(8) Test results As is clear from the above results, composition example (4) in which sodium polyacrylate was added to sodium hypochlorite aqueous solution
), (5), composition example with sodium maleate added (7
), the composition example (8) in which CMC sodium is added has a better adhesion rate to fishing nets than the composition examples (3) and (6) in which they are not added, and in terms of the killing and removal effects of contaminant organisms, the following Composition example in which 5wt of sodium chlorite (Fb was added (4)
), (7), (8), the composition example (5) with 3wt% sodium hypochlorite is much better than the composition example (3) with 5wt% sodium hypochlorite added, and the following It was comparable to composition example (6) in which 10 wt% of sodium chlorite was added.

By adding a flocculant such as sodium polyacrylate, sodium maleate, or sodium CMC, the amount of sodium hypochlorite used can be halved.

Claims (1)

[Claims] 1 Hypochlorite is added as the main component, and in addition, sodium maleate, sodium polyacrylate, CM
A fishing net cleaning agent comprising an aqueous solution containing a flocculant selected from C sodium salts.