对陶瓷膜回收偏钛酸过程中膜污染机理进行研究。确定了主要的污染机理，污染物位置及成份；并考虑了操作条件对膜污染程度的影响。对于指导污染控制和膜再生有重要意义。 The mechanism of membrane fouling during the recovery of metatitanic acid from ceramic membrane was studied. The main pollution mechanism, location and composition of pollutants were identified. The influence of operating conditions on membrane pollution was also considered. It is important to guide pollution control and membrane regeneration.