探讨了原料液预处理、超声清洗和表面活性剂膜面表面改性三种强化措施对N-乙酰化超滤膜超滤过程中的浓差极化和膜污染的控制,结果表明:经过原料液真空抽滤和20～30 W超声15min以及在非离子表面活性剂APE中浸泡10h的物理和化学清洗相结合的方式,可使膜在一个月内保持纯水渗透通量在5.6ml/(cm2.h).
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