Continuous chlorine detection in drinking water and a review of new detection methods

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Title: Continuous chlorine detection in drinking water and a review of new detection methods
Authors: Wilson, RE
Stoianov, I
O’Hare, D
Item Type: Journal Article
Abstract: Chlorination is necessary to prevent epidemics of waterborne disease however excess chlorination is wasteful, produces harmful disinfection byproducts, exacerbates corrosion and causes deterioration in aesthetic qualities, leading to consumer complaints. Residual chlorine must be continuously monitored to prevent both under- and over-chlorination and factors including pH, temperature and fouling must be considered as these also affect the disinfectant strength of residual chlorine. Standard methods used by water utility companies to determine residual chlorine concentration in drinking water distribution systems are appraised and found to be unsuitable for continuous monitoring. A selection of newly developed methods for residual chlorine analysis are evaluated against performance criteria, to direct research towards the development of chlorine sensors that are suitable for use in water systems. It is found that fouling tolerance in particular is generally not well understood for these selected sensor technologies and that long-term trials in real systems is recommended.
Issue Date: 1-Apr-2019
Date of Acceptance: 1-Mar-2019
ISSN: 2056-5135
Publisher: Johnson Matthey
Start Page: 103
End Page: 118
Journal / Book Title: Johnson Matthey Technology Review
Volume: 63
Issue: 2
Copyright Statement: © 2019 Johnson Matthey. This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
Sponsor/Funder: Engineering & Physical Science Research Council (E
Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/P004229/1
Publication Status: Published
Open Access location:
Online Publication Date: 2019-03-21
Appears in Collections:Civil and Environmental Engineering

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