一个膜过滤中试装置运行了一年，以评估加州奥兰治县高颜色地下水中天然有机物和消毒副产品前体的去除情况。根据八种纳滤膜和超滤膜的实验室规模试验，选择了两种纳滤膜（传统软化膜和高渗透荷电膜）进行中试试验。高渗透性NF膜在极高的回收率和通量下表现出优越的有机物去除效果。它还允许大多数无机成分通过。低总溶解固体的浓缩物减少了无机污染，使浓缩物的再利用成为可能。本文还介绍了全面处理设施的初步设计标准和成本意见。包括14个参考文献、表格和图表。

A membrane filtration pilot plant was operated for one year to evaluate the removal of natural organic matter and disinfection byproduct precursors from a highly colored groundwater in Orange County, California. Two nanofiltration (NF) membranes--a traditional softening membrane and a high-permeablility, charged membrane--were selected for pilot-scale testing based on bench scale tests of eight NF and ultrafiltration membranes. The high-permeability NF membrane demonstrated superior organics removal at very high recovery and flux. It also allowed most inorganic constituents to pass through. The concentrate of low total dissolved solids reduced inorganic fouling and made concentrate reuse possible. The article also presents preliminary design criteria and a cost opinion for full-scale treatment facilities. Includes 14 references, tables, figures.