Abstract

The natural organic compounds in water resources produce the highly toxic and carcinogenic secondary disinfection compounds such as halomethanes (THMs) and haloacetic acids (HAAs) during the chlorination process. The properties of organic compounds in water resources not only depend on the time but also the place. In this research,the formation of disinfection byproducts was studied by determining the concentration of dissolved organic carbon (DOC) as a main component of natural organic compounds (NOM) present in the raw water of Chahnimeh lakes in Zabol city which supply the drinking water for Sistan and Baluchishtan province. To achieve this purpose,7 cumultive samples were prepared from Chahnimeh lakes in Zabol city during 8 months from October to May in 2015-2016. Also,the quality of samples was analyzed regarding to the amount of NTU,pH,UV254,EC,DOC,SUVA and the dry remained compounds. The results showed that the concentration of dissolved organic carbon is averagely about 7.52 mg/L. The approximate amount of total organic carbon and the average of SUVA parameter are about 13.04 mg/L and 6.66 L/mg.m,respectively. The highest and lowest concentrations of DOC were in March and December,respectively,and totally they did not follow the special time changes. The results revealed that the high proportion of SUVA parameter produces the disinfection byproducts such as toxic THMs more than HAAs. © 2016,International Journal of Pharmacy and Technology. All rights reserved.