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Chlorine fate and transport in drinking water distribution systems: Results from experimental and modeling studies

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Abstract

It has become generally accepted that water quality can deteriorate in a distribution system through microbiological and chemical reactions in the bulk phase and/or at the pipe wall. The most serious aspect of water quality deterioration in a network is the loss of the disinfectant residual that can weaken the barrier against microbial contamination. Studies have suggested that one factor contributing to the loss of disinfectant residuals is the reaction between bulk phase disinfectants and pipe wall material. Free chlorine loss in corroded metal and PVC pipes, subject to changes in velocity, was assessed during an experiment conducted under controlled conditions in a specially constructed pipe loop located at the US Environmental Protection Agency’s (EPA’s) Test and Evaluation (T&E) Facility in Cincinnati, Ohio (USA). These studies demonstrated that in older unlined metal pipes, the loss of chlorine residual increases with velocity but that wall demand in PVC was negligible.

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Authors and Affiliations

  1. Environmental Engineering and Public Health Consultant, 9627 Lansford Drive, Cincinnati, OH, 45242, USA

    Robert M. Clark

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  1. Robert M. Clark
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Correspondence to Robert M. Clark.

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Clark, R.M. Chlorine fate and transport in drinking water distribution systems: Results from experimental and modeling studies. Front. Earth Sci. 5, 334–340 (2011). https://doi.org/10.1007/s11707-011-0194-x

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  • DOI: https://doi.org/10.1007/s11707-011-0194-x

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