由于当前和预期的消毒副产品（DBP）法规，人们对去除DBP前体的压力驱动膜工艺越来越感兴趣。对两个加利福尼亚地表水和一个安大略省渥太华地表水进行了初步研究。对一种分子量截止值（MWCO）为100000道尔顿的超滤（UF）膜和四种分子量截止值为200至800道尔顿的纳滤（NF）膜进行了评估。结果表明，UF对DBPs的形成控制无效。当渗透液中检测到少量或没有溴化物时，MWCO为400-800道尔顿的中空纤维NF膜有效地控制了DBP的形成。在含有溴化物的水中，对这些膜的渗透液进行氯化处理后，观察到溴仿浓度较高（与原水相比）。 使用螺旋缠绕的NF膜（200-300道尔顿）控制溴化THM的形成，但水的预处理是必要的。包括51个参考文献、表格和图表。

As a result of current and anticipated disinfection by-product (DBP) regulations, increased interest is being shown in pressure-driven membrane processes for DBP precursor removal. Pilot studies were conducted with two California surface waters and one in Ottawa, Ontario. One ultrafiltration (UF) membrane with a molecular weight cutoff (MWCO) of 100,000 daltons and four nanofiltration (NF) membranes with MWCOs ranging from 200 to 800 daltons were evaluated. Results indicated that UF was ineffective for controlling the formation of DBPs. When little or no bromide was detected in the permeate, hollow-fiber NF membranes with MWCOs of 400-800 daltons effectively controlled DBP formation. In waters containing bromide, higher bromoform concentrations (compared with the raw water) were observed after chlorination of the permeate of these membranes. Use of spiral-wound NF membranes (200-300 daltons) controlled the formation of brominated THMs, but pretreatment of the water was necessary. Includes 51 references, tables, figures.