海因衍生物改性反渗透膜的制备方法及其可再生耐氯抗生物污染性能研究

At present, aromatic polyamide reverse osmosis membrane (RO) is the mainstream RO membrane products. There are two crucial problems: one is biofouling, and the other is the chlorination degradation of the membrane structure caused by free chlorine which is added to the feed solution to mitigate the biofouling. Increasing the chlorine resistances or anti-biofouling ability of aromatic polyamide RO membrane merely can not solve the above problems fundamentally. Based on our discovery, the ability of hydantoin derivative to provide aromatic polyamide RO membrane with reproducible chlorine resistance and anti-biofouling properties, in this project, different kinds of modified methods of aromatic polyamide RO membrane by hydantoin derivative will be explored. The effects of the key factors of these modifications on the introduction quantity and position of hydantoin derivative, as well as the controlling of these effects will be studied. Besides, the mechanisms of the changes of modified aromatic polyamide RO membrane structure and properties during the process of membrane chlorination and biofouling will also be investigated. Moreover, the interaction of modified aromatic polyamide RO membrane with free chlorine and microorganisms, respectively, as well as the reproducibility of the chlorine resistance and anti-biofouling properties of modified aromatic polyamide RO membrane arising from the coupling of the interactions will be studied. This project will provide fundamental theoretical principles and experiment data for the industrial production of reverse osmosis membrane with chlorine resistance and anti-biofouling properties in the future.

芳香聚酰胺反渗透膜是目前的主流商品膜，膜的生物污染以及为控制生物污染而在原料液中加入活性氯所造成的膜因氯化而产生结构降解是这类膜存在的两个关键问题。目前通过单纯提高膜的耐氯性或单纯直接赋予反渗透膜抗生物污染能力的方法都不能根本解决问题。本项目将以我们的新发现- - 海因衍生物能赋予反渗透膜可再生的耐氯和抗生物污染性能为基础，探索把海因衍生物引入芳香聚酰胺反渗透膜的各种方法以及各种方法下海因衍生物引入膜中数量和位置的变化规律与调控，探明海因衍生物改性反渗透膜在活性氯和微生物作用下结构和性能变化规律，研究海因衍生物改性膜分别与活性氯和微生物的相互作用机制以及二者耦合所致的膜耐氯和抗生物污染性能的可再生机制。本项目将为未来工业化生产耐氯抗生物污染反渗透膜提供理论基础和实验依据。

芳香聚酰胺反渗透膜是目前的主流商品膜，膜的生物污染以及为控制生物污染而在原料液中加入活性氯所造成的膜因氯化而产生结构降解是这类膜存在的两个关键问题。.目前通过单纯提高膜的耐氯性或单纯直接赋予反渗透膜抗生物污染能力的方法都不能根本解决问题。本项目将以我们的新发现——海因衍生物能赋予反渗透膜可再生的耐氯和抗生物污染性能为基础，探索把海因衍生物引入芳香聚酰胺反渗透膜的各种方法以及各种方法下海因衍生物引入膜中数量和位置的变化规律与调控，探明海因衍生物改性反渗透膜在活性氯和微生物作用下结构和性能变化规律，研究海因衍生物改性膜分别与活性氯和微生物的相互作用机制以及二者耦合所致的膜耐氯和抗生物污染性能的可再生机制。本项目将为未来工业化生产耐氯抗生物污染反渗透膜提供理论基础和实验依据。