Water network design with stochastic optimization approach

► This paper addresses water usage network with regeneration processes. Multiple contaminants and two types of water using processes are taken into regard. Simultaneous one stage optimization method was developed to synthesize the network. ► Merits of the approach are illustrated by examples that contain design problem with: structural issues, cost function and regeneration processes, fixed load and fixed flow rate water using processes, regeneration recycles elimination, over-constrained feasible region. ► The proposed approach generates solutions that are optimal or a set of near optimal networks.