臭氧影响超滤膜有机污染的机制及其在线清洗控制膜污染的研究

项目名称： 臭氧影响超滤膜有机污染的机制及其在线清洗控制膜污染的研究

项目编号： No.51208469

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 建筑环境与结构工程学科

项目作者： 宋亚丽

作者单位： 浙江科技学院

项目金额： 25万元

中文摘要： 膜分离被誉为21世纪的水处理技术，但其在水处理中的应用面临膜污染问题。研究发现，天然有机物是污染膜的主要物质，臭氧由于较强的氧化分解有机物的能力，使其成为膜有机污染控制的研究热点之一。尽管研究者对臭氧控制膜有机污染的机制进行了一定的研究，但并没形成统一的定论。此外，针对臭氧控制膜污染的技术则侧重于臭氧预氧化，这给饮用水处理带来安全问题。本项目采用超滤膜工艺，从有机物特性角度分析，研究臭氧对影响膜污染的有机物的作用，分析污染超滤膜的有机物特性，阐明臭氧对污染膜的有机物的作用机制。同时，为避免预臭氧控制膜污染过程中带来的饮用水安全问题，引入臭氧在线清洗方法，研究臭氧控制膜污染效能，为膜污染控制提供又一方法和途径。本项目的研究为膜法应用于饮用水处理中面临的膜污染问题提供了一定的理论支持和解决思路。

中文关键词： 臭氧；超滤膜；膜污染；在线；有机物

英文摘要： Membrane separation is regaeded as technique of water treatment during 21st century. However, the most important disadvantage in the application of these membrane processes for water treatment is fouling. Many researches indicated that membrane fouling mainly caused by natural organic matter. Ozone, which is a powerful oxidant, becomes research focus of membrane fouling controlling. No Conclusion for mechanism of membrane organic fouling removal by ozone has been reached yet, whereas many researches have been carried out However, a significant aspect of ozone pretreatment announced while combing with ultrafiltration membrane is safety of drinking water. The project, which analyzes the characteristics of organic matter, investigates effect of ozone on organic matter causing ultrafiltration membrane fouling and illuminates the mechanism of ultrafiltration membrane organic fouling removal by ozone through analysis of organic matter fouled ultrafultraion membrane. Furthermore, to avoid issue of drinking water safety during controlling of membrane fouling by ozone, online cleaning of ozone is introduced. The research of online cleaning, which is the other measure for controlling membrane fouling, focuses on effectiveness of membrane fouling removal by ozone. The project provides thinking of solving membrane fouling d

英文关键词： Ozone；Ultrafiltration membrane；membrane fouling；online；organic matter