Online Monitoring of Water Effluent Chlorination Using ORP vs. Residual Chlorine Measurements

More than 60% of the 20,000 municipal wastewater treatment plants in North America use chlorination as the primary method of disinfecting effluent. However, the costs involved with this method have increased dramatically over the past decade. This research identifies the differences, drawbacks, and advantages of both oxidation reduction potential and residual chlorine technologies, providing wastewater treatment plant managers with a document that demonstrates how these technologies will let operators compensate for variations in plant flow and water quality, thereby increasing efficiency and reducing operation and maintenance costs. Published by WERF. 406 pages. Online PDF only.

Originally funded as WERF project 99-WWF-6.