本文讨论了工业废水回用的设计因素。再利用的目的是减少消耗和废水。这可以通过使用淡水达到最高质量要求，并在可接受低质量水的生产步骤中重复使用工艺用水来实现。这需要对生产设施中每个单元操作的水质要求和出水特性进行分类。还必须考虑各种装置操作中的流量。讨论了废水回用的处理方法。提供了病例记录。强调了进行详细分析和规划的必要性。

This paper discusses design factors for industrial wastewater reuse. The purpose of reuse is to reduce consumption and effluents. This can be done by using fresh water for the highest-quality requirements and reusing process water in production steps for which lower quality water is acceptable. This entails classification of water quality requirements and effluent characteristics for each unit operation in a production facility. The volume of flow throughout the various unit operations must also be considered. Treatment of wastewater for reuse is discussed. Case histories are presented. The need for detailed analyses and planning is emphasized.