A model for chlorine concentration decay in pipes

Pratim Biswas, Chungsying Lu, Robert M. Clark

Research output: Contribution to journalArticlepeer-review

121 Scopus citations


A model that accounts for transport in the axial direction by convection and in the radial direction by diffusion and that incorporates first order decay kinetics has been developed to predict the chlorine concentration in a pipe in a distribution system. A generalized expression for chlorine consumption at the pipe wall is used to solve the governing equation and to determine the average chlorine concentration at any location in the pipe. Three non-dimensional parameters are used to determine the concentration and a methodology to determine them in pipe networks is proposed. The range of values of these dimensionless parameters where wall consumption is significant are determined. The methodology is applied to field measurements of chlorine concentration in a distribution network.

Original languageEnglish (US)
Pages (from-to)1715-1724
Number of pages10
JournalWater Research
Issue number12
StatePublished - Dec 1993
Externally publishedYes


  • chlorine decay
  • disinfectants
  • radial and axial transport
  • wall consumption

ASJC Scopus subject areas

  • Environmental Engineering
  • Civil and Structural Engineering
  • Ecological Modeling
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution


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