Optimal distribution of green and grey infrastructures coupled with real time control of the sewer for combined sewer overflows control as an adaptation measure to climate change

Optimization of the spatial distribution of green infrastructures (GIs) was performed for a combined sewer system located in the Province of Quebec, Canada, using a simulation-optimization tool with the aim of reducing seasonal combined sewer overflows (CSOs). The performance of four CSOs control al...

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Bibliographic Details
Published in:Urban water journal 2024-04, Vol.21 (4), p.419-435
Main Authors: Jean, Marie-Ève, Morin, Camille, Ossa Ossa, Juan Esteban, Duchesne, Sophie, Pelletier, Geneviève, Pleau, Martin
Format: Article
Language:English
Subjects:
Climate change
Combined sewer overflows
Environmental impact
Genetic algorithm
Geographical information systems
Hydrologic data
low impact development
nature-based solutions
Optimization
Precipitation
Rainfall
Rainfall intensity
Real time
rule-based control
Sewage tanks
Sewer systems
source control measure
Spatial distribution
Storage tanks
sustainable urban drainage systems
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Summary:Optimization of the spatial distribution of green infrastructures (GIs) was performed for a combined sewer system located in the Province of Quebec, Canada, using a simulation-optimization tool with the aim of reducing seasonal combined sewer overflows (CSOs). The performance of four CSOs control alternatives involving the individual and integrated implementation of GIs with storage tanks and real time control (RTC) of the sewer was evaluated for a nine-year simulation period of historical rainfall data and for 20%-increased rainfall data (representative of potential climate change impact). The integration of GIs with RTC of the sewer (with or without storage tanks) lowered the total CSO volume by 95% to 99% under historical rainfall data and by 93% to 96% under increased rainfall intensities when compared to the reference scenario. Adapting GI's number and location for optimal CSO control rather than according to space availability criteria reduced CSO frequency but had only a slight impact on CSO volume reduction.
ISSN:1573-062X
1744-9006
DOI:10.1080/1573062X.2024.2312497