Water and Wastewater Minimization in Chemical Process with & without reverse osmosis

Integration of water system can minimize fresh water usage and wastewater production in a unit. For this purpose, specifications of contaminants and their limiting concentrations are necessary. In this paper optimal reuse network of our system was designed based on internal resources of water and therefore minimization of fresh water usage and wastewater production were studyusing multi-objective optimization. For minimizing wastewater production, two strategies were study, with and without reverse osmosis unit. Investigations show that first strategy is 28 percent better in amount of infiltration than second one. Finally optimization of unit leads to 44 percent minimization in fresh water usage and 5 percent minimization in wastewater production.