1. Introduction
Over the last decade water reclamation and reuse have increased in popularity as more communities and industries have realised that water reclamation and reuse represent effective approaches for conserving limited, high-quality fresh water supplies (Institute for Sustainability and Innovation, 2008). Moreover, the study of Anderson (2003) concluded that by combining recycled wastewater and other water resources in management. The combined ecological footprint of water, sewage and drainage systems could be potentially reduced by more than 25%. Reusing significant Quantities of wastewater typically involve regeneration/treatment of the available wastewater to meet the higher water quality requirements of water-using activities. However, the cost of wastewater regeneration/treatment rises exponentially with increasing contaminant removal efficiency (Feng and Chu, 2004).