本文报告了1996年8月至1997年4月由欧文牧场水区（IRWD）进行的一项主要研究，该研究评估了集成膜系统的性能，该系统具有多个目标，包括有机和消毒副产品前体去除、病原体和病毒去除以及生物稳定。在开始膜中试研究之前，进行了四种不同的膜完整性测试。进行膜完整性测试，以验证通过有机膜的泄漏- 纳滤（NF）膜元件和NF工艺组件，如端部密封件、垫片和O形圈，均未出现。这些方法包括:通过染料测试、EC和UV 254排斥进行目视检查和探测；真空测试（试运行后测试）；细菌学（大肠杆菌示踪研究）；粒子计数。使用甲基紫染料进行的探针试验证明，由于选择性去除导致膜工艺关闭而导致的极端污染，NF膜试验不成功。 电导率（EC）和UV 254截留率对预测被测水的膜工艺完整性不敏感，而真空测试验证了几个元件的故障，但仅限于对离线元件和主要膜元件缺陷的预测试。由于对溶解气体微气泡的敏感性过高，分批颗粒计数结果不确定。包括8个参考文献、表格、图表。

This paper reports on a major study conducted from August 1996 through April 1997 by Irvine Ranch Water District (IRWD) evaluating the performance of an integrated membrane system with multi-objectives including organic and disinfection byproduct precursor removal, pathogen and virus removal, and biological stabilization. Prior to initiating the membrane pilot study, four different membrane integrity tests were performed. Membrane integrity tests were conducted to verify that leakage across the organic selective-nanofiltration (NF) membrane elements and the NF process components such as end seals, spacers and O-rings was not occurring. These methods included: visual inspection and probing by dye testing, EC and UV 254 rejection; vacuum testing (post pilot tested); bacteriological (E-Coli tracer study); and, particle counting. The probe test using a methyl violet dye proved unsuccessful for the NF membranes tested due to extreme fouling apparently caused by selective removal that resulted in shut down of the membrane process. Electrical conductivity (EC) and UV 254 rejection were not sensitive to predict membrane process integrity for the water tested while vacuum testing verified the failure of several elements, but is limited to pre-testing of the elements off-line and major membrane element defects. Batch particle counting results were inconclusive due to excessive sensitivity for dissolved gas microbubbles. Includes 8 references, tables, figures.