LCA of wet-weather emissions of an urban wastewater system: the case of the Greater Paris watershed
ACV des rejets par temps de pluie d'un système d'assainissement urbain : le cas du bassin versant du Grand Paris
Résumé
In typical life cycle impact assessment (LCIA) studies of urban wastewater systems (UWS), average conditions are modelled but there are many annual flooding events with releases of raw sewage. Such peak conditions are not considered and present a high temporal variability which is not currently accounted for. In addition, the aggregation of the loads from several storm events could bring an issue for the impact assessment on the aquatic categories of eutrophication and ecotoxicity. Hence we are investigating the contributions of these wet weather-induced discharges along with the inclusion of temporal variability in the life cycle inventory (LCI) for UWS.