METHOD FOR TREATING OPEN CIRCULATION COOLING WATER SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a method for treating an open circulation cooling water system capable of securely sterilizing and suppressing Legionella on a nondetection level, and to which chemical resistant bacteria and Algae having chemical resistance are hard to be propagated.SOLUTION: Provided is a method for treating an open circulation cooling water system, in which cooling water of an open circulation cooling water system is subjected to treatment with a halogen oxide at all times and is also subjected to treatment with an organic bactericide for one or more times on 30 days.