![]() ![]() Install flow meters on make-up and blowdown lines.A conductivity controller can continuously measure the conductivity of the cooling tower water and discharge water only when the conductivity set point is exceeded. Work with a water treatment specialist to determine the maximum cycles of concentration the cooling tower system can safely achieve and the resulting conductivity (typically measured as micro Siemens per centimeter, µS/cm). Install a conductivity controller to automatically control blowdown.Typical treatment programs include corrosion and scaling inhibitors along with biological fouling inhibitors. The actual number of cycles of concentration the cooling tower system can handle depends on the make-up water quality and cooling tower water treatment regimen.Increasing cycles from three to six reduces cooling tower make-up water by 20% and cooling tower blowdown by 50%. Many systems operate at two to four cycles of concentration, while six cycles or more may be possible. Work with your cooling tower water treatment specialist to maximize the cycles of concentration. Calculate and understand "cycles of concentration." Check the ratio of conductivity of blowdown and make-up water.To maintain water efficiency in operations and maintenance, federal agencies should: Environmental Protection Agency (EPA) WaterSense at Work cooling towers best management practice. High-quality municipal wastewater effluent or recycled water (where available).Pretreated effluent from other processes provided that any chemicals used are compatible with the cooling tower system. ![]()
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