这是佛罗里达州一家反渗透软化厂的案例。从最广泛的意义上讲，软化膜是非常低压、低截留率的膜，可单独使用或与其他类型的膜结合使用，以处理低TDS水，以达到特定的渗透水质。本文介绍了原有的反渗透装置，该装置将添加新的膜软化设备，每个阶段3.0 mgd。新系统是一个混合膜系统；从盐截留率、THMFP、混合率、生产率、运行和维护成本、能源使用、化学品使用、膜更换、劳动力要求、使用、混合和施工成本等方面描述了其设计和性能。

This is a case history of a reverse osmosis softening plant in Florida. In the broadest sense, softening membranes are very low pressure, low rejection membranes that may be used alone or in conjunction with other types of membranes to treat low TDS waters to achieve a specific permeate water quality. This paper describes the original reverse osmosis plant, to which is being added new membrane softening equipment in phases of 3.0 mgd each. The new system is a hybrid membrane system; its design and performance are described in terms of salt rejection, THMFP, blend rate, productivity, operation and maintenance cost, energy use, chemical use, membrane replacement, labor requirements, use, blending, and construction costs.