在俄亥俄州Bowling Green的6.0 mgd铁凝固和石灰软化处理厂进行的一项初步研究的两个主要目标如下:评估各种预处理工艺的有效性，以将所选复合薄膜（CTF）纳滤（NF）膜的污染率降至最低；并且，评估CTF纳滤膜生产优质成品水的有效性。中试规模的处理包括混凝沉淀过滤（CSF）、微滤和超滤预处理，然后是NF。此外，还研究了CS-UF预处理和UF工艺前的在线混凝（ILC）。一个四人的操作矩阵- 为每个工艺序列进行了为期两周的实验。在四个实验中测试了7和14 gfd的通量和65%和85%的回收率，相当于8周的操作。由于只有一个纳滤撬可用，每个预处理过程都要进行顺序测试。包括3个参考文献、表格和图表。

The two primary objectives of a pilot study done at the 6.0 mgd iron coagulation and lime softening treatment plant in Bowling Green, Ohio, were as follows: evaluate the effectiveness of various pretreatment processes to minimize the rate of fouling of the selected composite-thin-film (CTF) nanofiltration (NF) membrane; and, evaluate the effectiveness of the CTF nanofiltration membrane to produce a quality finished water. Pilot-scale treatment trains included coagulation-sedimentation-filtration (CSF), microfiltration, and ultrafiltration pretreatment followed by NF. In addition CS-UF pretreatment have been studied and in-line coagulation (ILC) before the UF process. An operational matrix of four - two week experiments for each process train was developed. Fluxes of 7 and 14 gfd and recoveries of 65% and 85% were tested in four experiments, which is equivalent to 8 weeks of operation. Each pretreatmnet process was to be sequentially tested since only one nanofiltration skid was available. Includes 3 references, tables, figures.