J Korean Soc Environ Eng. 2016; 38(2): 63-70.
Published online 2016 February 29.
Variation of Disinfection-by-Prodcut in Distribution System and Evaluation of Correlation between Disinfection-by-Product and Physico-Chemical Parameters
K-water
Received 2015 September 03; Accepted 2016 February 17.
ABSTRACT
The distributed systems managed by K-water were surveyed to study the characteristic of disinfection-by-product (Trihalomethans & Haloacetic acids) formation and the correlations between the concentrations of disinfection-by-product and physico-chemical parameters. Five distribted system were selected according to their water ages and the degree of deterioration of their pipelines. Total seven items including Trihalomethans (THMs), Haloacetic acids (HAAs), BDOC, DOC, pH, chlorine residual, and temperature were analysed in monthly basis. The concentration of organic matter were increased according to water age and pipeline deterioration in this study. The coefficient of determination between the decline of residual chlorine and the increase of water age was revealed as high. Also, the coefficient of determination between the decline rate of residual chlorine and the increase of the Trihalomethans concentration were studied as high. Furthermore the longer water age is the bigger the effect on Trihalomethans formation and temperature. However, the coefficient of determination between the concentraion of Haloacetic acid and water age, residual chlorine, and temperature were revealed as low in this study.
Keywords :
Trihalomethans (THMs), Haloacetic Acids (HAAs), Residual Chlorine, Residence Time of Water (Water Age)
