MBR中导电高分子-金属复合膜原位微曝气强化抗污染策略及其机制研究

膜生物反应器（MBR）是支撑国家生态文明建设战略的关键技术之一，而膜污染问题是这一技术亟待解决的关键科学问题。曝气是影响MBR中膜抗污染能力的决定性因素之一。传统MBR中曝气对污染物的冲洗作用十分有限，其主要原因是气泡由外部输入，且运动方向平行于膜面。受电解水产生气泡实验的启发，本项目提出构筑膜原位微曝气MBR系统，即曝气气泡产生于导电膜内部原始位点，并垂直于膜面运动，从而克服传统MBR中普遍存在的曝气缺陷。为了进一步优化该系统，本项目将结合热力学理论和动力学方法定量化分析MBR中典型参数与膜污染之间的“构效”关系，尝试定量化揭示膜抗污染机制。本项目从新视角为膜污染提供解决方案，具有重要的科学意义。

Membrane bioreactor (MBR) technology is one of the key technologies which are supporting the national ecological civilization construction strategy. The membrane fouling is the key scientific problem to be solved for MBR. In MBR, the aeration is one of the crucial factors which determine antifouling ability of membranes. The wash effect of aeration on pollutants is largely limited due to that the gas bubbles are transferred from outside and present a parallel motion to the membrane surface in the conventional MBR. Inspired by the water electrolysis experiment which produces gas bubbles, the current proposal puts out to construct an in-situ tiny aeration MBR system in which the bubbles are generated from the in-situ position of conductive membrane and move in a vertical direction with membrane surface. In this way, the drawbacks of aeration in traditional MBR will be overcome. To further optimize the in-situ tiny aeration MBR system, the thermodynamic theories and dynamic methods will be combinatively used to quantitatively analysis the antifouling theoretical mechanism and the structure-activity relationship between the typical parameters and the membrane fouling in MBR. The current proposal is supplying a novel solution for membrane fouling and displays an important scientific significance.