Temporal and Spatial Variations in Bulk Chlorine Decay within a Water Supply System
Publication: Journal of Environmental Engineering
Volume 135, Issue 3
Abstract
Modern water treatment must maintain an acceptable balance between the microbial safety of potable water supply, the costs of treatment, and the formation of potentially harmful disinfection by-products (DBPs). In order to achieve the optimum balance, it is essential to understand and predict both the formation of DBP and the decay of chlorine, in relation to source water, treatment processes, storage, and supply. Reported herein are new data which demonstrate the lack of durability, precision, and accuracy associated with earlier empirical chlorine decay rate equations. This work develops an improved methodology for the prediction of variation in chlorine decay rates in distribution systems enabling practical, cost-effective prediction of the effects of both seasonal variations and management interventions on chlorine levels at treatment works and in distribution systems.
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Acknowledgments
The writers are grateful for the financial and logistical support provided by Severn Trent Water Ltd.
References
AWWARF. (1996). Characterisation and modelling of chlorine decay distribution systems, AWWA.
Courtis, B. J. (2003). “Water quality chlorine management.” Ph.D. thesis, Univ. of Birmingham, Birmingham, U.K.
Golfinopoulos, S. K., and Arhinditsis, G. B. (2002a). “Multiple regression models: A methodology for evaluating trihalomethane concentrations in drinking water from raw water characteristics.” Chemosphere, 47(9), 1007–1018.
Golfinopoulos, S. K., and Arhinditsis, G. B. (2002b). “Quantitative assessment of trihalomethane formation using simulations of reaction kinetics.” Water Res., 36(11), 2856–2868.
Hallam, N. B. (1999). “Water quality in distribution systems.” Ph.D. thesis, Univ. of Birmingham, Birmingham, U.K.
Hallam, N. B., Hua, F., West, J. R., Forster, C. F., and Simms, J. (2003). “Bulk decay of chlorine in water distribution systems.” J. Water Resour. Plann. Manage., 129(1), 78–81.
Her Majesty’s Stationery Office (HMSO). (2000). “Statutory Instrument 2000 No. 3184.” The Water Supply (Water Quality) Regulations 2000, London.
Hua, F. (2000). “The effects of water treatment works on chlorine decay and THM formation.” Ph.D. thesis, The Univ. of Birmingham, Birmingham, U.K.
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), 2735–2746.
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.
Sawyer, C. N., McCarty, P. L., and Perkin, G. F. (1994). Chemistry for environmental engineering, 4th Int. Ed., McGraw-Hill, New York.
Singer, P. C. (1999). “Humic substances as precursors for potentially harmful disinfection by-products.” Water Sci. Technol., 40, 25–30.
USEPA. (2006). “40 CFR Parts 9, 141, and 142 National primary drinking water regulations: Stage 2 disinfectants and disinfection byproducts rule; final rule.” Washington, D.C.
Vasconcelos, J. J., et al. (1996). Characteristics and modeling of chlorine decay in distribution systems, AWWA Research Foundation, Denver.
White, G. C. (1999). Handbook of chlorination and alternative disinfectants, Wiley, New York.
World Health Organization (WHO). (2004). Guidelines for drinking water quality, World Health Authority, Geneva, Switzerland.
Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 135 • Issue 3 • March 2009
Pages: 147 - 152
Copyright
© 2009 ASCE.
History
Received: Oct 16, 2007
Accepted: Oct 28, 2008
Published online: Mar 1, 2009
Published in print: Mar 2009
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