摘要
膜污染及其防治是影响膜系统运行效果的重要因素。本研究选取工程中运行一年多的处理垃圾渗滤液的碟管式反渗透膜,经研究判断,污染絮体的主要成分是有机物,并含有A l、S i等的胶体物质以及Fe和Ca的化合物。通过化学清洗来验证对污染层结构的判断,先碱洗后酸洗的清洗效果远远好于先酸洗后碱洗,有机物在污染层形成过程中起主要作用,减少渗滤液中的有机物质,将会大大减轻膜污染的发生。
Prevention and control of membrane fouling is a major factor influencing membrane performance. Study on membrane fouling and chemical cleaning was carried out by analyzing Disc-tube RO membrane treating landfill leachate for more than one year. The study results indicated that membrane fouling layer was a complex system, in which organic substances played a major role in membrane fouling, containing A1 and Si colloid, as well as Ca and Fe compound. The optimum method of chemical cleaning is alkali agents followed by acid agent, because organic substances act an important role in fouling layer formation.
出处
《环境工程学报》
CAS
CSCD
北大核心
2007年第7期101-105,共5页
Chinese Journal of Environmental Engineering
基金
教育部科学技术重点研究资助项目(03025)
