April 2013

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HP Water Management: Update: Online measurement of oxidizing biocides

Nearly all owners of industrial cooling towers feed oxidizing biocides—chlorine (Cl) and bromine (Br)—to kill bacteria in the recirculating cooling water. Minimizing the populations of bacte..

Huchler, L. A., MarTech Systems, Inc.

Nearly all owners of industrial cooling towers feed oxidizing biocides—chlorine (Cl) and bromine (Br)—to kill bacteria in the recirculating cooling water. Minimizing the populations of bacteria is critical to avoid microbiological fouling and a subsequent loss of heat transfer and to eliminate pathogenic strains of bacteria being present in water droplets entrained in the cooling tower plume. Control is vital Precise feed control for biocide systems is critical: too little biocide allows bacteria populations to thrive; conversely, too much biocide makes the system susceptible to corrosion. Oxidizing biocides may be fed continuously or intermittently (slug feed), depending on site

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