الفهرس 
Chapter one: IntroductionOnly 14 pages are availabe for public view
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Abstract
In designing industrial wastewater network with multiple contaminants, it is often desirable to obtain a simple structure with fewer interconnections so as to achieve high levels of controllability, operability, and safety. A design methodology for multiple contaminant water networks with single internal water main is presented. A concept of ’ water-saving factor’ is proposed. Emphasis is placed on the location of first internal water main, which is related to the maximum water-saving potential. The required calculations in this procedure can be easily realized with Microsoft Exel or a hand calculator. This work is accompanied by three case studies to illustrate the methodology. According to these case studies, water networks with just one internal water main determined by the presented method can obviously reduce water consumption, approaching the minimum water consumption target.