Water Supply Vol 2 No 5-6 pp 493–499 © IWA Publishing 2002
Formation characterization and removal of disinfection by-products in water treatment processes
S. Chae* and C. Wang**
*Water Resources Research Institute, Korea Water Resources Corporation, 462-1, Jonmin-Dong, Taejon, South Korea (E-mail: shchae@kowaco.or.kr)
**Department of Environmental Engineering, Chungnam National University, 220, Kung-Dong, Taejon, South Korea (E-mail: ckwang@hanbat.chungnam.ac.kr)
ABSTRACT
This study evaluates the formation and removal of DBPs along with precursors in a pilot-scale treatment plant employing conventional treatment processes (coagulation/ sedimentation/filtration), ozonation and granular activated carbon (GAC) treatment with three EBCT (10 min, 15 min, 20 min) and three types of GACs (coal-based F400, coal-based SLC, coconut-based SLC-2000). Pilot-scale study suggested that the GAC adsorber demanded more than EBCT 15 min for DBPs removal and exhibited excellent performance for HAA removal. During approximate a one-year pilot scale evaluation for ozone/GAC processes, as high efficiency of removal was continued, exchange cycle and regeneration life of GAC need to be decided through longer operation.
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