中水回用超滤膜污染的化学清洗研究  

Research on the pollution and cleaning methods of ultrafiltration membrane used in water reuse

作　　者：李倩[1] LI Qian(Electric Power Planning ＆ Engineering Institute, Beijing 100120, China)

机构地区：[1]电力规划设计总院,北京100120

出　　处：《清洗世界》2017年第5期30-34,共5页Cleaning World

摘　　要：以中水回用时使用的超滤膜为研究对象,选取3种不同的方法进行化学清洗;以膜通量恢复率和膜阻力减少率作为评价指标,对清洗效果进行比较。结果表明,酸洗的效果最佳。借助于能量色散X-射线光谱对污染物进行检测,综合分析后发现氢氧化铁是造成膜污染的主要原因。The ultrafihration membrane used in the water reuse was studied, three different methods were selected for chemical cleaning. Membrane flux recovery rate and membrane resistance reduction rate were used as evaluation indexes. By comparing the different methods, the results indicated that acid cleaning was the best. Pollutants were detected comprehensive analysis,it displayed that membrane by energy dispersive X-ray spectroscopy. After a fouling was mainly caused by ferric hydroxide

关 键 词：超滤 化学清洗 中水回用 

分 类 号：X703[环境科学与工程—环境工程]