ABSTRACT
In total site water integration or interplant water integration, it is desirable to consider all integration possibilities of water exchange among sources and demands across industrial sites or regions on a wider scale. The key concept is the use of a centralised water reuse header that is managed and operated by a third party across the total site (TS). The optimal water network across TS of the case study was not complex and showed that the number of water interconnections, including pumping, are at a considerable amount. The significant aspect of TS-entralised water integration (TS-CWI) is that it can protect the confidentiality between plants where they can opt to perform the methodology on their own. The TS-CWI methodology for targeting the minimum fresh water required and wastewater generated is developed using a numerical method. Water network systems with multiple contaminants are more practical compared to single contaminant networks, but involve a complex mathematical optimisation technique.
