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 that prevents occurrence of a biofilm, can securely sterilize and inhibit Legionella on a nondetection level, and can inhibit the propagation of algae having chemical resistance, particularly granular green algae for a long time.;SOLUTION: Cooling water of an open circulation cooling water system is subjected to a treatment with a chemical solution containing at least one oxidant selected from chloramine T and chloramine B, and at least one bromine compound, for at least one hour in 24 hours, and a treatment with an organic bactericide at least one time in 30 days.;SELECTED DRAWING: None;COPYRIGHT: (C)2019,JPO&INPIT