The Principle Of Seawater Electrolysis Antifouling

Seawater electrolysis antifouling uses special electrodes to electrolyze seawater to produce available chlorine (HClO) without a diaphragm. The strong oxidizing properties of available chlorine are used to kill the larvae or spores of marine fouling organisms, thereby preventing fouling purpose.

The reaction formula of seawater electrolysis is: main reaction

Solution:

Cl2+H20→HC10+Cl一+H+

Solution:

HClO+ClO一一c103- +2C1一+2H+

It can be seen from the above reactions that in order to make the electrolytic antifouling device operate safely, continuously and efficiently, it is necessary to suppress the side reaction of unnecessary consumption of HClO, pay attention to the discharge of hydrogen, and remove the deposits of calcium and magnesium salts according to a certain period of acid washing.

Available chlorine has a strong killing effect on marine fouling organisms. The electrolytic chlorination of seawater includes continuous chlorination and shock chlorination. According to the actual growth of sea creatures, the anti-pollution effect of the combination of the two methods is better. During continuous chlorination, the effective chlorine concentration is generally controlled at 2×10-6, and some shock chlorination concentration can be controlled as high as 6.5×10-6. Adjust the shock chlorination concentration according to the season and the growth and reproduction law of marine organisms. The frequency and length of time, and ensure that the residual residual chlorine in the discharged seawater is less than 0.1×10-6.