investigation of integrated model for optimizing the performance of urban wastewater system

Due to the rapid population and economic growth, the demand for water has increased. in addition, the natural resources are limited and degrade because of several factors such as the climate change. these challenges lead to reduce the ability of providing water at the required quantity and quality. one of solutions to maintain the sustainability of water supply from different sources is reuse of wastewater. for this aim, it is crucial to optimize wastewater systems. this research paper aims to describe different modelling possibilities and optimization methods for various components of integrated urban wastewater systems. the main conclusion of this research paper is the lack of study of optimum design and operation of urban wastewater systems in a holistic method. moreover, most of previous studies on integrated wastewater management have been conducted on combined sewer systems.