在膜前加入混凝剂作为预处理 过滤正在成为公用事业公司的普遍做法。 然而，人们对混凝预处理的效果知之甚少 对膜过滤性能的影响。 本研究的目的是 提高对混凝剂对膜的影响的理解 表演研究中使用的主要变量 包括水源水、混凝剂类型、混凝剂剂量、混凝 应用条件和膜材料。污垢是 在非搅拌过滤中使用平板膜进行评估 单间牢房预过滤用于分离凝血效应 关于颗粒物和溶解有机碳。提供 更广泛的适用性，五种天然地表水和 包括三种膜材料。 研究发现，凝血剂量是一个重要因素 决定表现是好是坏。肯定的 结果发现，凝血能力与细胞存活率呈线性关系 去除溶解的有机碳，提高膜性能。 没有一种混凝剂始终优于其他混凝剂； 相反，无论哪种凝固剂往往最有效地去除 特定来源的溶解有机碳也最有效 提高膜性能。包括31个参考文献、表格、图表。

The addition of a coagulant as a pretreatment before membrane filtration is becoming a common practice among utilities. However, little is known about the effects of coagulation pretreatment on membrane filtration performance. The objective of this study was to improve the understanding of the effects of coagulants on membrane performance. The primary variables used in the study included source water, type of coagulant, coagulant dose, coagulation application conditions, and membrane material. Fouling was evaluated using flat-sheet membranes in an unstirred filtration cell. Prefiltration was used to separate the effect of coagulation on particulate matter and dissolved organic carbon. To provide more widespread applicability, five natural surface waters and three membrane materials were included. The research found that coagulant dose was an important factor in determining whether performance was better or worse. A positive linear relationship was found between the ability of coagulation to remove dissolved organic carbon and to improve membrane performance. No single coagulant was consistently better than the others; rather, whichever coagulant tended to be most effective at removing dissolved organic carbon in a particular source was also most effective at improving membrane performance. Includes 31 references, tables, figures.