Chlorine Dioxide in Cooling Towers to Control Legionella Bacteria

Cooling towers & the use of chlorine dioxide

The use of chlorine dioxide in cooling towers, closed loops and cooling systems greatly assists in the control of Legionella bacteria, algae, planktonic bacteria, biofilm and scale, helping to control the presence of dangerous bacteria and maintain the efficiency of heat exchanger surfaces, reservoir intakes, and ancillary equipment.

Chlorine dioxide is a highly effective oxidising biocide that is effective against both planktonic and sessile Legionella bacteria making it ideal for use in cooling towers.

Traditional oxidising agents such as chlorine and bromine suffer from pH constraints and corrosion problems.

Chlorine dioxide is significantly more stable than other oxidising biocides and is also compatible with most water treatment chemistry.

Why is it important to control biofilm in cooling systems?

Biofilm protects colonies of bacteria and also acts as an insulator causing deterioration in general heat transfer properties.

It creates fouling and corrosion problems by accumulating scale in pipe work and equipment.

Biofilm also creates an environment that promotes the growth of anaerobic microorganisms, including legionella bacteria, which in turn increases microbiologically induced corrosion (MIC) problems.

Expert Legionella Control Assistance

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