SEASONAL CORRELATION BETWEEN WATER QUALITY PARAMETERS AND DISINFECTION BY-PRODUCTS IN SAKARYA RIVER

Abstract

This study focus on investigate seasonal variations and relationships between water quality parameters and disinfection byproducts (DBPs) within the Sakarya River where is located in Turkey. This river water is rapidly endangered by urbanization, industrial and agricultural activities so, to research pollution of river samples have been taken from 5 different points along the river during one year. Within this scope, changes in the dissolved organic carbon (DOC), biological oxygen demand (BOD5), chemical oxygen demand (COD), ultraviolet absorbance at 254 nm (UV254), specific ultraviolet absorbance (SUVA254), trihalomethane formation potential (THMFP), and haloacetic acids formation potential (HAAFP) are measured. High coefficient of determination (R2) was 0.64 and 0.62 UV between THMFP and HAAFP respectively, also THMFP and HAAFP relationships between UV254 (R2) was found to be close to each other. COD, BOD and NBOM maximum coefficient of determination between DBPs was 0,62. High correlation coefficients (r) of 0.80 and 0.79 between SUVA254 and DBPs were obtained for THMFP and HAAFP respectively. The reactivity of the organic matter changed throughout the year; with the lowest reactivity for both THMFP and HAAFP in fall, increasing in spring and reaching a maximum in summer season. Understanding the seasonal changes and corelations between organic matter and their reactivity should lead to a better optimization of the treatment method and a more consistent water quality.

Keywords

• THMFP,HAAFP,river water

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