This paper presents a methodology to assess and reduce water residence times in a water distribution system in order to improve water quality. The methodology was developed and validated on Quebec City's main distribution system. A tracer study was conducted to evaluate real residence times and results are presented in the ‘companion paper’ (Part I) in this issue. A hydraulic model was then built to simulate the mean residence times (MRT) and develop strategies to reduce them. An optimization algorithm (hybrid discrete dynamically dimensioned search, HD-DDS) was used to calibrate the model using flows and pressures measured in the distribution system. Results show that the suggested methodology can lead to significant reductions in MRT (25.6%) in parts of the distribution system, but could also lead to significant loss in pressure, which should be monitored closely.
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Research Article|
December 31 2014
Minimizing water residence time in Quebec City's main distribution network using hybrid discrete dynamically dimensioned search (HD-DDS): Part II
François-Julien Delisle;
François-Julien Delisle
1Roche Ltd, Consulting Group, Quebec City, Quebec, Canada
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Simon Rochette;
Simon Rochette
2Department of Civil and Water Engineering, Université Laval, Quebec City, Quebec, Canada
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Geneviève Pelletier;
3Department of Civil and Water Engineering, Université Laval, Pavillon Adrien-Pouliot, 1065, avenue de la Médecine, Quebec City, Quebec G1V 0A6, Canada
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Masoud Asadzadeh;
Masoud Asadzadeh
4Department of Civil Engineering, University of Guelph, Kitchener, Ontario, Canada
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Bryan A. Tolson;
Bryan A. Tolson
5Department of Civil Engineering, University of Waterloo, Waterloo, Ontario, Canada
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Manuel J. Rodriguez
Manuel J. Rodriguez
6ESAD, Université Laval, Quebec City, Quebec, Canada
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Journal of Water Supply: Research and Technology-Aqua (2015) 64 (3): 378–390.
Article history
Received:
April 16 2014
Accepted:
November 17 2014
Citation
François-Julien Delisle, Simon Rochette, Geneviève Pelletier, Masoud Asadzadeh, Bryan A. Tolson, Manuel J. Rodriguez; Minimizing water residence time in Quebec City's main distribution network using hybrid discrete dynamically dimensioned search (HD-DDS): Part II. Journal of Water Supply: Research and Technology-Aqua 1 May 2015; 64 (3): 378–390. doi: https://doi.org/10.2166/aqua.2014.054
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