73-10: The Role of Cooling Water Systems and Water Treatment in Achieving Zero

This paper is concerned with the application of cooling water systems in achieving Zero Discharge. The operations of several ins ta I lotions that have greatly reduced their water consumption and have approached Zero Discharge are reviewed. The role of cooling towers in the hydraulic scheme and the re-examination of methods of treatment of these cooling water systems is discussed. Several examples of pro­posed methods to achieve Zero Discharge are put forth and advantages and Iimitations are examined.