【作者】 杨立颖； 王湛； 王秀艳； 李文娟； 裴峥；

【Author】 YANG Liying,WANG Zhan,WANG Xiayan,LI Wenjuan,FAI Zheng (Department of Chemistry and Chemical Engineering,College of Environment and Energy Engineering,Beijing University of Technology,Beijing 100124,China)

【机构】 北京工业大学 环境与能源工程学院化学化工系；

【摘要】 用不同化学清洗剂对间歇性膜生物反应器(SMBR)中污染的膜进行清洗,实验中以膜通量的恢复率和ξ电位表征各清洗剂的清洗效果,并分别分析了不同种类化学清洗剂的清洗机理和不同浓度化学清洗剂的清洗效果.结果表明:单独使用酸类清洗剂对于膜通量的恢复率和ξ电位均没有较大改善,其清洗效果较差;单独使用碱类清洗剂时,NaClO清洗效果较好;用酸碱结合的方式进行清洗时,膜通量恢复率达到70%左右,清洗后膜表面的ξ电位为—62～—69,效果最佳,且膜仍然具有高抗污染性能.更多还原

【Abstract】 Chemical cleaning the fouled membrane in the MBR with different chemical agent,flux recovery andξ-potential were used to characterize the cleaning effect of cleaning agent,analysed the mechanism of different types and different concentrations of the chemical cleaning agent.The results showed that neither acid detergent nor hydrogen ion could get a excellent membrane flux recovery andξ-potential.When used alone, NaClO showed an good cleaning efficiency due to its oxidation.When we used a combine regime of acid and alkaline,the membrane flux recovery came to about 70%,theξ-potential were—62～—69 with a excellent anti-pollution performance.更多还原