Water Treatment 101: A Disinfection Primer

Editor's Note: This article is part of our "Water Treatment 101" series, which covers basic treatment processes. To read the first article in this series, see "6 Tips for Improving Coagulation, Flocculation and Clarification."Disinfection is a critical factor in all forms of water treatment. However, deciding which process to use is almost always driven by cost, regulations, local process requirements and concerns for safety.Daryl Weatherup, the global product manager for disinfection at Evoqua Water Technologies, breaks down the topic.“There are two basic types of disinfection,” he says, “primary disinfection and secondary [also referred to as residual] disinfection.”Drinking water plants practice