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Wall Decay Coefficient of Combined Chlorine in a Drinking Water Distribution System Open Access


Other title
SynerGEE Water
Wall Decay
Water Distribution System
Bulk Decay
Water Quality Modeling
Combined Chlorine
Type of item
Degree grantor
University of Alberta
Author or creator
Liu, Megan J.
Supervisor and department
Craik, Steve (Adjunct, Civil and Environmental Engineering)
Zhu, David (Civil and Environmental Engineering)
Examining committee member and department
Liu, Yang (Civil and Environmental Engineering)
Craik, Steve (Adjunct, Civil and Environmental Engineering)
Zhu, David (Civil and Environmental Engineering)
Department of Civil and Environmental Engineering
Water Resources Engineering
Date accepted
Graduation date
Master of Science
Degree level
Using water quality models to predict disinfectant concentrations in water distribution systems requires a knowledge of the wall decay coefficient. In this study, field water sampling was conducted in conjunction with a SynerGEE Water hydraulic model for an area of the water distribution system of the City of Edmonton to calibrate a wall decay coefficient for combined chlorine. Using the least squares method, a unique wall decay coefficient, 0.0295 m/d, was obtained. Using the same method it was found that the wall decay coefficient was 0.0455 m/d for a sub-section of the studied area with predominately cast iron pipes, and 0.0160 m/d for another sub-section where the pipes had been extensively renewed. By identifying wall decay coefficients for individual areas using this method, it is feasible to turn SynerGEE Water hydraulic model into a working model to predict water quality for the City of Edmonton.
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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