进行了实验室规模的横流（24英寸[2]）和中试规模的单元件（2.5x40英寸[2]和4.0x40英寸[2]）试验，以证明放大效应，并确定纳滤（NF）和超滤（UF）膜的最佳操作条件。通过小试和中试研究了天然有机物（NOM）截留和膜通量下降。f/k比是一个重要的运行参数，用于定义最佳运行条件，并预测最大NOM抑制和最小流量- 减少在实验室和中试试验中发现，NF膜具有相似的通量下降趋势和NOM截留率。然而，超滤膜在NOM截留方面表现出放大效应；与使用超滤膜的实验室规模试验相比，中试规模试验显示出更大的NOM截留率。包括7个参考文献、表格、图表。

Bench-scale cross-flow (24 in[2]) and pilot-scale single element (2.5x40 in[2] and 4.0x40 in[2]) tests were performed to demonstrate scale-up effects and to define optimal operating conditions for nanofiltration (NF) and ultrafiltration (UF) membranes. Natural organic matter (NOM) rejection and membrane flux decline were studied in bench-scale and pilot-scale tests. A f/k ratio, an important operational parameter, was introduced to define optimal operating conditions and predictions for maximum NOM rejection and minimum flux-decline. It was found that a NF membrane showed similar flux-decline trends and NOM rejection in bench-scale and pilot-scale tests. However, a UF membrane showed scale-up effects in terms of NOM rejection; pilot-scale tests exhibited larger NOM rejection than bench-scale tests using the UF membrane. Includes 7 references, tables, figures.