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Chlorine degradation in continuous and intermittent drinking water supply networks

Vaidya, R and Kumar, KRS and Mohan Kumar, MS and Rao, L (2022) Chlorine degradation in continuous and intermittent drinking water supply networks. In: Urban Water Journal .

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Official URL: https://doi.org/10.1080/1573062X.2022.2139275


Chlorine is a widely used disinfectant in developing countries due to its efficiency and affordability. Millions of people in these countries receive water intermittently through piped networks. However, very little is known about chlorine decay in intermittent networks. In this work, field chlorine decay measurements were carried out in adjoining continuous and intermittent networks. Hydraulic modelling was done to determine the water velocity in networks using EPANET. Overall chlorine decay rates were estimated using field measurements and showed a good first-order fit. Decay rates in continuous and intermittent networks were compared, considering the influence of pipe velocity, material and diameter. The average overall decay rate for ductile and cast-iron pipes in intermittent network (1.7 (Formula presented.)) was 1.5 times higher than that in continuous network (1.1 (Formula presented.)). These results indicate that intermittency has a long-term effect on the overall chlorine decay in supply networks and its implications are discussed in this study.

Item Type: Journal Article
Publication: Urban Water Journal
Publisher: Taylor and Francis Ltd.
Additional Information: The copyright for this article belongs to Taylor and Francis Ltd.
Keywords: Chlorine decay; continuous water supply; intermittent water supply; water distribution network; water quality
Department/Centre: Division of Mechanical Sciences > Centre for Sustainable Technologies (formerly ASTRA)
Date Deposited: 04 Jan 2023 05:25
Last Modified: 04 Jan 2023 05:25
URI: https://eprints.iisc.ac.in/id/eprint/78696

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