METHOD FOR PREVENTING ADHESION OF SCALE

摘要

PROBLEM TO BE SOLVED: To provide a method for preventing scale from adhering to a cooling water system by a metallic ion, in which the scale adhesion is surely prevented by defining the concentration of the metallic ion when added or detected. SOLUTION: The metallic ion is made to exist in the cooling water system so that the amount of the metallic ion to be supplied to cooling water per the volume of water to be blown to the outside satisfies 0.01-10 mg/L or so that the analyzed value of the concentration of the metallic ion in the cooling water satisfies 0.001-10 mg/L.