高分子有机膜亲水改性及光催化改性的研究进展

Research Progress in Hydrophilic and Photocatalytic Modification of Organic Polymer Membrane

随着高分子有机膜材料在水处理领域中应用的不断加深,膜法水处理技术以其优越的性能,成为中国水质高效处理的主导技术。但膜污染却成为阻碍膜法水处理技术发展的关键性问题,如何有效抑制膜污染的发生关系着膜法水处理技术未来发展的前景,目前已成为众多学者开展研究的核心方向。膜改性技术能够赋予现有膜材料新的功能特性,满足膜材料适用于处理各种复杂水质的同时能够抑制膜污染的发生,成为推动膜法水处理发展的前沿方向。膜亲水改性通过将疏水性的膜材料转变为亲水性,提高其抗污染性能。膜光催化改性通过将光催化剂与膜材料相结合,实现膜分离与污染物光催化降解相耦合,可有效抑制膜污染的发生。文章阐述了目前高分子有机膜材料主要的亲水改性技术,并介绍了膜改性新方向-光催化改性的常用方法。

With the deep application of organic polymer membrane materials in the field of water treatment, the membrane technology has become the dominant technology for efficient wastewater treatment in China due to its superior performance. However, membrane fouling has become the key problem hindering the development of membrane technology. Recently, many scholars focus on the solutions to effectively reduce the membrane fouling which is critical to the prospect of membrane technology. Given membrane materials new features to treat many kinds of complex wastewater and reduce the membrane fouling, membrane modification technology becomes the research focus to promote the development of membrane wastewater treatment technology. The membrane hydrophilicity modification improves the anti-fouling property of organic membrane by transforming the hydrophobic membrane material into hydrophilicity. The membrane photocatalytic modification can realize the membrane separation and photocatalytic degradation of pollutants simultaneously by combining membrane material and photocatalysts in the membrane, inhibiting the occurrence of membrane fouling effectively. General methods for hydrophilic modification of organic polymer membrane were reviewed, and the methods of photocatalytic modification representing the new direction of membrane modification were introduced as well.