Abstract:
Wastewater planning management is a complex problem involving agricultural, rural
and industrial interests. In countries facing rapid population growth, identifying methods
that can allow them to take good decisions among several competitive alternatives is of
utmost importance. The purpose of this paper is to present a methodology for a wastewater
planning management system using a Multi-criterion Decision-making (MCDM)
method based on utility function. It allows one to take into account a multiple conflicting
multi criterion context in terms of objective specification, criteria, criterion scales and
construction of a payoff matrix that consists of the alternative versus criteria array. These
objectives deal with groundwater protection, effluent quality, wastewater reuse, system
reliability and resources needed. A number of wastewater treatment techniques are presented
as alternative action plans from which the most satisfying alternative is to be chosen.
In order to select on appropriate management scheme, we propose to use the UTA
(Utility Additive) method. This method is interactive and permits the decision maker
(DM) to select the best solution according to his viewpoint . The UTA method proceeds in
two steps: the assessment of optimal utility using piecewise linear programming techniques
and sensitive analysis using a post - optimal procedure. An application of UTA
method in wastewater planning management system is presented for the first time and
some extensions of the method are discussed.
