利用纳滤膜对自来水、模拟苦咸水以及某含有机物废水进行了试验．通过改变浓缩液与透过液的流量比，测量盐分的截留率和水通量等参数，得到了纳滤膜在除盐时的一些规律． The nanofiltration membrane was used to test tap water, simulated brackish water and some organic wastewater. By changing the flow ratio of concentrate to permeate and measuring salt rejection and water flux, some rules of nanofiltration membranes were obtained.