75-02: Environmental Considerations in Cooling Tower Treatment

Since the beginning of this decade, a new factor has entered the engineer's consideration of cooling water treatment selection. This factor, our environment, has made many of us make significant change in our thinking and the method of treatment in cooling towers. The days of feeding any corrosion inhibitor, biocide or other treating agent without considering its effect on the environment is gone forever. What has caused this change, what have we been doing the past five years, and where do we go the second half of this decade?