Applying DBP models to full-stale plants

Paul Westerhoff, Jean Debroux, Gary L. Amy, Dominique Gatel, Véronique Mary, Jacques Cavard

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


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 languageEnglish (US)
Pages (from-to)89-102
Number of pages14
JournalJournal / American Water Works Association
Issue number3
StatePublished - 2000

ASJC Scopus subject areas

  • Chemistry(all)
  • Water Science and Technology


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