Impacts environnementaux du traitement et de la valorisation de boues d'épuration : perspective par l'ACV

4th European Conference on Sludge Management, Izmir, TUR, 26-/05/2014 - 27/05/2014; International audience; This paper aims to assess the main French sludge treatment and disposal routes using Life Cycle Assessment in order to highlight which system is the most suitable from an environmental point of view. System boundaries include thickening up to the disposal route and the functional unit is one dry matter ton of treated and disposed sludge. Results are provided for thickening, dewatering and stabilization processes coupled with a disposal route. Major points highlighted by this study are the strong impact of the hypotheses used on LCA results as well as the necessity to produce data to fulfil the inventory step.