Booster Disinfection for Response to Contamination in a Drinking Water Distribution System
Publication: Journal of Water Resources Planning and Management
Volume 135, Issue 6
Abstract
Booster disinfection has been shown to be an effective means of maintaining more stable chlorine residuals in a water distribution system. It has been suggested that booster disinfection could also be a viable means of protecting a population against contamination. We simulated random contamination events in a model water distribution system with an optimized sensor network. A disinfection boost was simulated to begin the instant the contamination reached a sensor, and a range of decay coefficients were applied to the contaminant to simulate reaction with the disinfectant. Cumulative distribution curves of the volume of consumed contaminated water for various response levels were prepared to analyze how each response affected the vulnerability of the system. This analysis illustrated that a boost-response system could be effective in significantly reducing the volume of consumed contaminated water, but only in very specific circumstances. Most importantly, the booster must be located at a node with high reachability. Further, if the disinfectant cannot rapidly inactivate the contaminant, the effectiveness of a boost-response system is much reduced.
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Acknowledgments
The writers thank Dominic Boccelli and Feng Sheng for their assistance with the EPANET simulations and Jim Uber for the use of the water distribution systems. This work has been funded by the National Science Foundation Sensors Program under Grant No. UNSPECIFIEDBES-0329549.
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Information & Authors
Information
Published In
Journal of Water Resources Planning and Management
Volume 135 • Issue 6 • November 2009
Pages: 502 - 511
Copyright
© 2009 ASCE.
History
Received: Dec 20, 2007
Accepted: Feb 18, 2009
Published online: Oct 15, 2009
Published in print: Nov 2009
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