Because of increasing concern about balancing health risks for microbiological control and disinfection by-product formation, utilities are closely examining and optimizing disinfection practices. The authors present a methodology for developing site-specific, inplant (finished water) chlorine (C12) residual and trihalomethane (THM) formation models. In a case study, the methodology was applied at three operating water treatment plants in the Paris suburbs. A key obstacle was the limited historical record of bromide (Br-) occurrence. However, lab chlorination experiments indicated that approximately 10 percent of Br- was typically incorporated into THMs. In-plant C12 residuals were accurately simulated with a simple first-order Cl2 consumption model. The most accurate THM simulations were obtained using a recently developed US Environmental Protection Agency model that incorporates species-specific reactivity parameters.
|Original language||English (US)|
|Number of pages||14|
|Journal||Journal / American Water Works Association|
|State||Published - 2000|
ASJC Scopus subject areas
- Water Science and Technology