吸附预处理减缓微滤膜污染试验研究  

Study of effect of adsorption pretreatment on mitigating fouling of micromembrane

作　　者：郑武[1] 于萍[2] ZHENG Wu;YU Ping(Medicine Vocational and Technical School,Wuhan University,Wuhan 430060,China;College of Chemistry and Molecular Sciences,Wuhan University,Wuhan 430060,China)

机构地区：[1]武汉大学医学职业技术学院,武汉430060 [2]武汉大学化学与分子科学学院,武汉430060

出　　处：《四川大学学报（自然科学版）》2018年第6期1265-1269,共5页Journal of Sichuan University(Natural Science Edition)

摘　　要：聚醚砜(PES)微滤膜过滤厌氧-缺氧-好氧生物脱氮除磷工艺(A2 O)出水时,膜污染较严重.废水经过硅藻土、活性白土和活性炭三种吸附剂处理后,膜通量得到明显的改善.吸附预处理减缓膜污染的效果优劣排序:活性炭>活性白土>硅藻土.扫描电镜图显示,废水经过吸附预处理后,膜表面不存在污垢层,这是膜通量得以改善的主要原因.The most serious fouling is observed when the microfiltration of the A 2 O wastewater without the pretreatment. The flux is significantly improved by the adsorption pretreatment of diatomite, floridin and activated carbon. The improvement degree is as the following order： activated carbon〉floridin〉 diatomite. As shown in the SEM pictures, a cake layer is found on the membrane used for the wastewater without pretreatment, while the cake layer is not found on the membrane used for the wastewater with pretreatment. Therefore, the dominant reason of the less fouling is the less adsorption of the foulants on the membrane surface.

关 键 词：吸附 PES膜 通量 膜污染 

分 类 号：X703.1[环境科学与工程—环境工程] TQ028.8[化学工程]