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. This study purposes to evaluate the possibilities in alternatives of chlorine residuals deduction for transmission. We made a filed survey on the Tohnan main line in order to get data for modeling of the chlorine residuals decrease in big size water pipes.
First, we analyze the fluctuations in time series of the measured water quality data. Second, a kinetic model is formulated using the Arrhnius equation with TOC/C0 as a correction factor that is derived from our previous study by laboratory experiments. And this kinetic model is demonstrated to describe the chlorine residuals concentration very clearly. Finally, we examine some scenarios with a chlorine residuals reduction at the reservoir exit. It is found that the advanced water treatment allows us to get more reducible concentration compared with the current treatment.
