SS4.11 Water and Society - Science and Management in a Social and Economic Context
Date: Thursday, June 13, 2002
Time: 10:00:00 AM
Location: Sidney
 
JackJD, University of Louisville, Louisville, USA, jeff.jack@louisville.edu
McGaha, G, D, University of Louisville, Louisville, USA, dmcgaha67@aol.com
Bukaveckas, P, A, University of Louisville, Louisville, USA, pabuka01@athena.louisville.edu
 
THE ROLE OF ALGAL CARBON IN THE FORMATION OF DISINFECTION BYPRODUCTS
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Trihalomethanes are disinfection byproducts of water purification that arise from the reaction between chlorine and naturally occurring dissolved organic compounds. Seasonal changes in algal concentrations and in the loading of allochthonous materials from the watershed may influence THM formation potential (THMFP). We performed a year-long study in a which we monitored the THMFP of water entering and leaving an eutrophic reservoir in Kentucky (USA). THMFP concentrations leaving the reservoir were usually higher than the inputs from either of the two main tributaries, indicating the impoundment may serve as a net source of THMFP. THMFP was not strongly associated with CHLa, DOC, or temperature, but UV (254nm) absorbance in source water was a good predictor of THMFP. Within the reservoir, there were no consistent differences between the THMFP of water samples from the epilimnion vs. the hypolimnion. A more complete understanding of the ecosystem level processes that influence THMFP is needed to help utilities meet water management goals.