93-09: Water Reuse Within a RefineryBefore water reuse can be optimized within a refinery, all process water streams and utility water streams must be identified and their contaminants must be characterized. The streams can then be mixed and matched to minimize total refinery water use, water discharge, and water treatment. The cooling system is typically the largest consumer of water within a refinery, and consequently, it is the most likely place to reuse water. This paper identifies