这项试点研究考察了 快速生物过滤（无需事先凝固）减少超滤（UF）污染的能力 处理农业和市政影响河流的膜。早些时候更小 规模和较短时间的研究证明了这种“绿色”和鲁棒性的可行性 预处理方法和本研究提供了中试规模的确认。 三种不同的生物过滤器空床接触时间（EBCT）（5、10和15分钟） 使用平行双介质过滤器进行了研究。中空纤维膜单元 （ZW-10）在恒定流量下运行。只有一个膜单元可用，并且 因此，连续进行了运行时间至少为200小时的试验。 结果表明，生物过滤预处理有利于提高过滤速率 不可逆污垢，EBCT增加导致污垢率降低。这些 结果是可重复的，TMP中的一般相似性证明了这一点 当使用EBCT为15分钟的生物过滤器重复试验时倾斜。 生物过滤器也能有效去除浊度（即平均出水浊度） <1 NTU）。包括12个参考文献、表格和图表。

This pilot-scale study has examined the ability of rapid biofiltration (without prior coagulation) to reduce fouling of a ultrafiltration (UF) membrane treating an agriculturally and municipally impacted river. Earlier smaller scale and shorter duration studies demonstrated the viability of this "green" and robust pretreatment approach and this study provides confirmation at pilot scale. Three different biofilter empty bed contact times (EBCTs) (5, 10 and 15 min) were investigated, using parallel dual-media filters. The hollow fiber membrane unit (ZW-10) was operated at constant flux. Only one membrane unit was available and experiments with a run time of at least 200 h were therefore conducted sequentially. Results indicate a beneficial effect of biofiltration pretreatment on the rate of irreversible fouling, with increased EBCTs leading to lower rates of fouling. These results were reproducible, as demonstrated by the general similarity in the TMP slopes when repeating an experiment using the biofilter with the EBCT of 15 min. The biofilters also provided effective turbidity removal (i.e. mean effluent turbidities < 1 NTU). Includes 12 references, tables, figures.