Mise en conformité de systèmes d'assainissement eaux usées

ABSTRACT The general obligation of a successful sewerage on any communal territory currently reaches its conclusion (December 31 2005). But in the case of waste water sewerage, previous programmes of modest size communities (less than 10 000 inhabitants) are still based on a methodology which takes into account neither the interactions between the different infrastructures, nor those with their environment. In order to make the decision process more rational and coherent, we propose in this article a methodological tool providing a decision-making aid support for choices of solutions. Its principle is based on an alternative reasoning with the current approach. This tool integrates concepts borrowed from the expert systems and from the multicriteria analysis.