مسار بولونيا
EN

وسام باسم محمد التميمي

السنة عنوان البحث نشر البحث
2018 Seasonal variation and modeling of disinfection by-products (DBPs) in drinking water distribution systems of Wassit Province Southeast Iraq journal of Pharmaceutical Science research
Abstract: This study was established for monitoring the concentrations and seasonal variation of disinfection by-products (DBPs) including trihalomethanes (THMs) and Halloacetic acids (HAAs) in both raw and treated water. Also, developing a model for predicting the formation THMs and HAAs in drinking water systems within the five main water treatment plants (5 WTPs) in Wassit Province. The results have indicated that the mean values for total THMs (TTHMs) and total HAAs (THAAs) in raw water samples ranged from 12.4 to 32.4 µg/L and from 9.6 to 17.5µg/L in winter and summer respectively. While the mean values for TTHMs and THAAs in treated water samples ranged from 30.1 to 139 μg/L and from 37.8 to 88.5 μg/L in winter and summer respectively. Bromodichloromethane (BDCM), dibromochloromethane (DBCM), monobromoacetic acid (MBAA) and chlorodibromoacetic acid (CDBAA) were the major disinfection by products in the raw water while BDCM, DBCM, trichloroacetic acid (TCAA), and dichloroacetic acid (DCAA) were the major disinfection by-products in the treated water whereas dibromoacetic acid (DBAA) was not detected in all samples. A statistical models for THMs and HAAs concentration in Wassit water supply systems have been derived based on measured water parameters and using multiple regression analysis. The performance of predictive regression models for TTHMs and THAAs was good (R2 =0.77 and 0.71 respectively) and showed that the most significant parameters are temperature, chlorine dose, TOC, and UV-254.