TY - GEN
T1 - Fate and transport of wastewater-derived disinfection by-products in surface waters
AU - Chen, Baiyang
AU - Westerhoff, Paul
AU - Krasner, Stuart W.
PY - 2008/8/5
Y1 - 2008/8/5
N2 - Disinfection by-products (DBPs) discharged into surface waters from upstream wastewater treatment plants (WWTPs) may result in occurrence of DBPs in downstream drinking water treatment plants (DWTPs). This article evaluates the effects of five biogeochemical mechanisms (biodegradation, photolysis, hydrolysis, volatilization, and adsorption) on the fate of several types of DBPs in surface waters that receive disinfected wastewater discharges. Pseudo-first order rate constants of the five mechanisms were obtained from literature reviews, laboratory experiments and/or quantitative structure-activity relationships. The dominant removal mechanism for each DBP class is: 1) volatilization for trihalomethanes (THMs), 2) biodegradation for dihalogenated haloacetic acids (HAAs), 3) hydrolysis for haloacetonitriles (HANs), and 4) photolysis for nitrosoamines (NAs), while adsorption of DBPs onto suspended solids is not important for all classes. The receiving waterbody geometry (width, depth), flowrate, and meteorological conditions are also important factors affecting the fate of DBPs.
AB - Disinfection by-products (DBPs) discharged into surface waters from upstream wastewater treatment plants (WWTPs) may result in occurrence of DBPs in downstream drinking water treatment plants (DWTPs). This article evaluates the effects of five biogeochemical mechanisms (biodegradation, photolysis, hydrolysis, volatilization, and adsorption) on the fate of several types of DBPs in surface waters that receive disinfected wastewater discharges. Pseudo-first order rate constants of the five mechanisms were obtained from literature reviews, laboratory experiments and/or quantitative structure-activity relationships. The dominant removal mechanism for each DBP class is: 1) volatilization for trihalomethanes (THMs), 2) biodegradation for dihalogenated haloacetic acids (HAAs), 3) hydrolysis for haloacetonitriles (HANs), and 4) photolysis for nitrosoamines (NAs), while adsorption of DBPs onto suspended solids is not important for all classes. The receiving waterbody geometry (width, depth), flowrate, and meteorological conditions are also important factors affecting the fate of DBPs.
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U2 - 10.1021/bk-2008-0995.ch018
DO - 10.1021/bk-2008-0995.ch018
M3 - Conference contribution
AN - SCOPUS:84905585376
SN - 9780841269507
T3 - ACS Symposium Series
SP - 257
EP - 273
BT - Disinfection By-Products in Drinking Water
PB - American Chemical Society
ER -