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The fate of disinfection byproducts (DBPs) in surface waters, which could serve as downstreamwater supplies, receiving wastewater was evaluated (i.e., indirect potable reuse). This studymodeled five potential loss mechanisms (i.e., biodegradation, hydrolysis, photolysis, sorption,and volatilization) in surface water for seven groups of DBPs: trihalomethanes (THMs),haloacetic acids (HAAs), haloaldehydes, haloketones, haloacetonitriles (HANs),halonitromethanes, and nitrosoamines. When possible, fundamental chemical properties wereused to predict critical parameters for the fate-and-transport equations. Otherwise, parameterestimates were based upon literature or laboratory experiments. Removals of the DBPs, over afixed river reach, for three representative river systems (with variable depth and flowrate) wereconsidered. Results showed that sorption by suspended solids (SS) in the river is not animportant loss mechanism for any of the DBPs; and HAA loss by volatilization is negligible dueto the presence of primarily deprotonated anions. The most significant removal mechanism forchloroform was volatilization. Includes tables, figures.

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Edition: Vol. - No. Published: 06/01/2006 Number of Pages: 13File Size: 1 file , 320 KB