Ammonia in the cooling loop poses an additional challenge for Hypochlorite or oxidizing biocides in controlling the microbiological activity since monochloramines are not effective biocides. Historically Bromine based non-oxidizing biocides have been an industry standard with occasional Isothiazolin or Gluteraldhyde dosage. This paper discusses how mixed oxidants, as a combination of hypochlorite and peroxide, generated on-site replaced non-oxidizing biocides and improved overall water treatment regime at a major semiconductor facility in the US.

15-18: Alternative to Bromine Improves Cooling Water Microbial Control and

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  • Andrew Boal, MIOX Corporation

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