Ozone System Fundamentals for Drinking Water Treatment

Ozone treatment is being considered, designed, and operated at an increasing number of drinking water utilities across North America. Most of these utilities use ozone primarily for enhanced disinfection and disinfection byproducts control, but appreciate the improvements in aesthetic quality, including taste, odor, and color removal. This paper describes how ozone is generated and discusses safety considerations. The costs of using ozone are compared to the costs associated with other chemicals used in water treatment. Finally, ozone system optimization is discussed with respect to water quality performance ratio, ozone-dose consumption and energy consumption. © 1996 American Water Works Association.