Disinfection by-products in drinking water distribution system of Bucharest City

Abstract

Chlorine is widely used in Romania and all over the world as a disinfectant of drinking water. During the chlorination process, the natural organic matter and inorganic ions react with chlorine forming disinfection by-products (DBPs). The predominant organic disinfection by-products are trihalomethanes (THMs) while the main inorganic disinfection by-products are chlorate and chlorite ions. THMs were detected in all investigated drinking water samples from Bucharest distribution system with values from 27.8 µg/L up to 75.1 µg/L, which are below the maximum concentration value admitted by Romanian drinking water legislation of 100 µg/L. Chloroform constitutes the major component in total THMs concentration found in all tested drinking water. Chlorate and chlorite anions were not detected in any of the investigated drinking water samples. THMs concentration was correlated with total organic carbon (TOC), residual chlorine and chloride.

Modeling the Chlorine Series from the Treatment Plant of Drinking Water in Constanta, Romania

“…The correlations between the coliforms’ presence in the water and the free chlorine content in the Parisian distribution system were also analyzed based on statistics and econometrics approaches [ 25 ]. For Romania, only a few studies provide results on drinking water treatment [ 13 , 26 , 27 ].…”

Assessing the Efficiency of a Drinking Water Treatment Plant Using Statistical Methods and Quality Indices

“…Chirilă et al [ 31 ] studied the water supply sources in Constanta town (Romania), the applied treatments based on their quality, and the performances of the water purification process. Some authors [ 46 , 47 , 48 ] addressed the disinfection by-products in drinking water, modeling the chlorine decay or proposing the analysis of the chlorine concentration in the distribution system.…”