Effects of chlorination on THMs formation in raw water

E. E. Chang, S. H. Chao, P. C. Chiang, J. F. Lee

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)


This research work investigated the effects of chlorination on THMs formation and correlations among chlorine demand and other water quality parameters. Bromo-substitution was found to interfere with the chlorine competition and affected the formation of CHB2Cl during the higher chlorine dose reaction. A statistical THMs model in terms of chlorine contact time, residual chlorine, TOC and UV254 was successfully developed. COD (and TOC) denoting organics compounds, total count representing microorganism and NH3 (and/or Mn) indicating inorganic ions are the principle factors affecting the chlorine demand.

Original languageEnglish
Pages (from-to)211-225
Number of pages15
JournalToxicological and Environmental Chemistry
Issue number1-4
Publication statusPublished - 1996


  • Chlorination
  • Chlorine demand
  • Factor analysis
  • Total organic carbon (TOC)
  • Trihalomethane formation potential (THMFP)

ASJC Scopus subject areas

  • General Environmental Science
  • Environmental Chemistry
  • Toxicology
  • Health, Toxicology and Mutagenesis


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