Bulk Decay of Chlorine in Water Distribution Systems
Publication: Journal of Water Resources Planning and Management
Volume 129, Issue 1
Abstract
Mathematical models of chlorine concentration in water distribution systems require the bulk decay coefficient to be quantified. The coefficient needs to be determined with respect to independent variables if models are to maintain their predictive capability as seasonal and water treatment operational changes occur. Reported herein are experiments undertaken to determine the functional dependence of the bulk-free, chlorine decay rate coefficient on total organic carbon concentration, initial chlorine concentration, temperature, and the number of rechlorinations. The resulting equation gives satisfactory results during annual cycles and the introduction of granular activated carbon treatment at a water treatment plant.
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References
Hua, F., West, J. R., Barker, R. A., and Forster, C. F.(1999). “Modelling of chlorine decay in municipal water supplies.” Water Res., 33(12), 2,735–2,746.
Powell, J. C., Hallam, N. B., West, J. R., Forster, C. F., and Simms, J., (2000). “Factors which control bulk chlorine decay rates.” Water Res., 34(1), 117–126.
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Copyright © 2003 American Society of Civil Engineers.
History
Received: Apr 3, 2000
Accepted: Nov 14, 2001
Published online: Dec 13, 2002
Published in print: Jan 2003
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