中文摘要：

超滤作为膜分离技术的一个重要分支，因其能量消耗低，设备体积不大，结构比较简单，工艺流程容易掌握，容易操作等特点。可是至今为止还没有得到充分的应用，其根本原因就是现存的商用超滤膜通量低，易污染，所以需要对它进行改性。本文介绍了国内外常用的几种超滤膜改性方法，以及改性后膜的抗污染性能的变化。

英文摘要：

The ultrafiltration process as an important branch of the membrane separation technology has many characteristics, such as low energy consumption, simple equipment structure and process, and so on. But so far the ultrafiltration process has not been widely applied because it has low membrane flux and is easy to pollution, so it need to be modified. In this paper, several kinds of modification methods for the ultrafiltration membrane at home and abroad were introduced, the anti-pollution performance of modified membranes was discussed.