Author(s): Marion Huchet; Helena M. Ramos
Linked Author(s):
Keywords: Urban floods; SUDS; Water-energy nexus; Cost-effectiveness analysis; Multi-criteria optimization
Abstract: Urban areas are facing increasing risks of flooding and surface water pollution, due to the expansion of impervious areas and climate change making violent rainfalls more and more frequent. Flood drainage systems are thus essential infrastructures and can include retention ponds, which help smooth runoff after important storm events. The possibility of coupling hydropower converters downstream these drainage systems has recently been investigated from a technical point of view and was shown promising. Indeed, a simultaneous design of water and energy networks would give a more global and sustainable vision of the city development, while preventing urban flooding. However, assessment of the economic viability of this innovative solution was yet missing. This study develops a method for multi-criteria optimization, integrating technical, social and environmental benefits in the evaluation process, to achieve project cost-effectiveness. The best parameters combinations are shown and discussed to determine the optimal system configuration, and make the system a long-term profitable solution.
Year: 2014