Balancing Disinfection Efficiency and THM Formation during Chlorination: Theoretical Considerations

Pen Chi Chiang, E. E. Chang, K. O. Ya-Wen, Jie Chung Lou

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A mathematical model has been developed to predict disinfection efficiency and trihalomethane (THM) formation during water chlorination. The model incorporates chlorine dose, total organic carbon (TOC) concentration, contact time, and geometric configuration of the chlorination chamber. Results indicate that the disinfection efficiency can be better controlled by modifying the geometric configuration of the chlorine contactor. In contrast, geometric configuration plays an insignificant role in controlling THM formation. The application of chlorine at about 1.0 mg/L appears to be the most economic and logical dose for the control of THM formation and the disinfection efficiency of the Liu-Du water treatment plant under the operational conditions of conventional chlorination practices.

Original languageEnglish
Pages (from-to)892-898
Number of pages7
JournalCanadian Journal of Chemical Engineering
Volume75
Issue number5
Publication statusPublished - 1997

Keywords

  • Chlorine contact chamber
  • Disinfection
  • Dispersion
  • Trihalomethanes (thms)

ASJC Scopus subject areas

  • Polymers and Plastics

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