Abstract:
PURPOSE: A preparation method of an exterminating liquid of a red tide by blending a mixed liquor of sour water and alkaline water obtained from electrolysis of seawater with loess is provided which can exterminate the red tide perfectly without destroying ecological system. CONSTITUTION: A process for making an exterminating liquid of a red tide which comprises: (a)a first stage for producing sour water and alkaline water by electrolyzing seawater in a seawater pipe with a diaphragm(7), b)the second stage for diluting sour water with seawater to adjust to an adequate pH value, c)the third stage for adding 2-100 wt.% of loess to sour water and alkaline water. About 100-96% of red tide organism is exterminated by using the exterminating liquid diluted 2 wt.% of sour water at pH 2.33-7.4 with 98 wt.% of seawater.