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Effects of pH, Water Temperature and Chlorine Dosage on the Formation of Disinfection Byproducts at Water Treatment Plant
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 Title & Authors
Effects of pH, Water Temperature and Chlorine Dosage on the Formation of Disinfection Byproducts at Water Treatment Plant
Lee, Ki-chang; Lee, Wontae;
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This study investigated formation potential of 16 disinfection byproducts (DBPs) (e.g., g trihalomethanes, haloacetic acids, haloacetonitriles, chloral hydrate, etc.) upon chlorination of raw water at various pH, water temperatures, and chlorine doses. We also compared the DBP formation potential (DBPFP) of raw and filtered waters. Most of DBPs were formed higher at neutral pH, but dichloroacetic acid, chloroform, and bromodichloromethane were formed higher over pH 7. As water temperature increased, concentrations of chloral hydrate, haloacetic acids, and haloacetonitriles linearly increased while that of trihalomethanes exponentially increased. Formation of chloral hydrate, trihalomethanes, and trihaloacetonitriles significantly increased up to 2.0 mg/L of chlorine addition, then gradually increased at 2.0~5.6 mg/L . Filtered water formed less DBPs than raw water in most DBPs except for trihalomethanes.
Disinfection Byproducts;pH;Water Temperature;Chlorine Dosage;Water Treatment Plant;
 Cited by
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