Kinetics of chlorine decay

Abstract

Models of chlorine kinetics in distribution systems characterize chlorine decay as a combination of first‐order decay in the bulk liquid and first‐order or zero‐order decay reactions at the pipe wall. Proper understanding, characterization, and prediction of water quality behavior in drinking water distribution systems are critical to ensure meeting regulatory requirements and customer‐oriented expectations. This article investigates the factors leading to loss of chlorine residual in water distribution system…