Study on Integrated Simulation Model for the Chlorine Residuals Decrease in Water Distribution System

Abstract

 One of important subjects on water quality management is to control and to reduce the chlorine residuals concentration in water transmission and distribution systems. The purpose of this study is to devise an integrated simulation model for the fluctuation of chlorine residuals concentration in the distribution system. We used a field survey data in order to device the useable chlorine residuals decrease model in actual facilities.
 First, we developed an integrated simulation model to estimate the chlorine residuals at the distribution reservoir exit using 5 explanatory variable. Secondly, we devised estimation model for the chlorine residuals in distribution area to apply the GIS for tap water using the chlorine residuals at the water supply station exit caluculated on the above-mentioned model as a input value. Finally, we evaluated the reduction of chlorine residuals in the sevice pipe branched from the distribution pipe compared the chlorine residuals between the survey data and estimated value applied our model.