JPS5825399A - Fishing net washing agent - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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.

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

Furthermore, in terms of effectiveness, the above algaecides are relatively ineffective against blue laver, etc., and therefore fishing nets with green laver, etc. attached to them are washed up, which rots and becomes a source of pollution on land, such as the generation of foul odors and maggots. At the same time, it has disadvantages such as causing damage to fishing nets.

This invention solves these drawbacks.As a result of intensive research, it was discovered that hypochlorite has an extremely excellent killing and removal effect on all kinds of contaminant organisms that adhere to fishing nets and breed. The invention has been completed, and the first invention of the present application provides a cleaning agent for fishing nets comprising an aqueous solution in which hypochlorite is dissolved as a main component.

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 hypochlorous acid-salt is selected depending on the type of organisms attached to the fishing net, the amount of seawater adhering to the fishing net, which has a lighter color than seawater, etc., but it is usually used as an aqueous solution of about 0.5 to 20 wt%. It is preferable to do so.

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 this 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. If an agent, preferably 0.01 to 3-Owt%, is added, when sprayed on fishing nets, aggregates will form on the surface of the nets, so the amount of spraying can be reduced, and as a result, hypochlorous acid Less salt is needed.

Here, the flocculants include, for example, organic acid polyvalent metal salts such as sodium maleate, polyacrylic acid, IJum, O
Polymeric polyvalent metal salts such as Va sodium salts can be used.

Examples of this invention will be shown below.

Example 1 Mata) Composition example 1 Seawater 95
wtt sodium chlorite swt'16
Q) Composition example 2 Fresh water 90
tnt4 sodium hypochlorite to wt
'1r (3) Spraying test Test location: Ajiro, Atami City, Shizuoka Prefecture Test period: August 1980 to May 1980 Removers of composition examples (1) and (2) were applied to fishing nets to remove S-organisms. The substance was sprayed from above, and a fishing net was placed in the sea for 1 minute after spraying to observe the resuscitation of contaminated organisms.

(4) Test results The symbols in the table represent the degree of resuscitation in the order of m, +, +, -.

All regrets will come back to life. - represents all dead.

As is clear from the table above, by using the cleaning agent of this invention, most of the contaminant organisms that adhere to the fishing nets are killed and removed within one minute1, and when the fishing nets are put back into the sea, they are clean. It was in good condition.

Example 2 Next, the following composition example in which sodium polyacrylate was added to an aqueous solution of hypochlorous acid (IJ) was tested for the amount of adhesion to fishing nets, the amount of spraying, and the killing and removal effects of contaminant organisms.

a) Composition example 3 Fresh water 95 - Sodium hypochlorite 5wt*+2) Composition example 4 Fresh water 94.7
wtt Sodium Chlorite 5・Owi
*Sodium polyacrylate o, a wt96
0) Composition example 5 Fresh water 96.7
wtt Sodium chlorite 3.0wt
T.

Sodium polyacrylate 02utt% (4) Composition example 6 Seawater 9G
, t Sodium hypochlorite 10 wt*
(5) Composition example 7 Sea water 94.8
wt sodium hypochlorite 5. Owt
% Malay/Sodium Acid 0-2wt*(6)
Composition Example 8 X Water 94.6 wt% The spraying test was conducted in the same manner as in Example 1.

The results are shown below.

V) Test results 9- The symbols in the table are the same as in Example 1, ``bone'' and ``hyeon''.

The degree of resuscitation is expressed in the order of + and -.

As is clear from the above results, composition example Gt in which sodium polyacrylate was added to sodium hypochlorite aqueous solution
) # (5), composition example σ) with sodium maleate added, and composition example d) with OMO sodium added have a higher adhesion rate to fishing nets than the luminescent φ composition examples (3) and (6). In addition, when looking at the killing and removal effects of contaminant organisms, composition examples (4), (7), φ) in which 5 wt 'J of sodium hypochlorite was added, and 3 wt 'J added to sodium hypochlorite 9. Composition Example (Excellent) is much better than Composition Example 0), which added 5 wt% of sodium hypochlorite, and is comparable to Composition Example (6), which added 10 wt% of sodium hypochlorite. Met.

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

Claims (1)

[Claims] ←) A cleaning agent for fishing nets, comprising an aqueous solution in which hypochlorite is dissolved as a main component. @) A cleaning agent for fishing nets that is characterized by consisting of an aqueous solution containing hypochlorite and a flocculant as the main ingredients.