膜污染是制约膜法污水处理技术广泛应用的瓶颈问题。开发有机-无机纳米粒子复合膜是提高膜抗污染性的重要途径，无机纳米粒子在复合膜中均匀固定是构建有机-无机纳米粒子复合膜的关键问题。本项目拟开发一种聚醚砜（PES）-聚电解质（PE）-氧化锌（ZnO）高抗污染的三元复合膜。通过聚苯乙烯磺酸钠（PSS）包覆纳米氧化锌（ZnO）制备ZnO-PSS-溶液以阻止纳米ZnO的团聚，然后将PES膜先后浸入到聚二烯丙基甲基氯化铵（PDADMAC）溶液和ZnO-PSS-溶液中进行层层自组装得到PES-PE-ZnO三元复合膜。在此基础上进行三元复合膜抗污染机理研究，拟采用数理方法对膜和污染物表面形态进行数学建模，通过XDLVO理论结合表面元积分法量化评价膜和污染物之间的界面作用力，以指导高抗污染复合膜的构建。本项目的实施对推动复合膜的实际工业化应用具有重要意义。

Membrane fouling is the bottleneck to restrain commercialization of membrane technology. Developing organic-inorganic composite membrane is an important solution for this problem. In this proposal, we will develop a PES-PE-ZnO triple composite membrane, which will show great antifouling ability. ZnO will be dispersed into PSS solution to get ZnO-PSS- solution so that agglomeration will be prevented. The PES membrane will be immersed into PDADMAC and ZnO-PSS- solutions successively. By the self-assembly of PE, ZnO will be fixed on the PES membrane and PES-PE-ZnO triple composite membrane will be gained. In order to researching the antifouling mechanism, the surfaces of membrane and pollutants will be modeled by mathematical method. By the XDLVO theory and surface element integration(SEI) method, the interaction force between membrane and pollutants will be calculated quantitatively. The modeling results will be compared with the experimental results and the mathematical model be used to direct the building of antifouling composite membrane. The expected results will improve the applying of composite membrane in polluting water treatment.