加设尼龙滤网防护罩对减缓膜污染的应用研究  

APPLICATION STUDY ON ADDING NYLON SCREEN PROTECTIVE COVER TO ALLEVIATE MEMBRANE POLLUTION

作　　者：刘志强[1] 刘丽[1] 于月怡 程一桥 刘昌浩 

机构地区：[1]青岛理工大学环境与市政工程学院,266033 [2]青岛房地产实业集团有限公司,山东青岛266071

出　　处：《水处理技术》2015年第12期106-109,共4页Technology of Water Treatment

基　　金：西部建筑科技国家重点实验室(筹)开放研究基金项目(08KF08)

摘　　要：以缺氧-好氧平板膜生物反应器(A/O-MBR)污水处理系统为基础,对校园生活污水进行处理,考察了膜污染的状况以及尼龙滤网在延缓膜污染方面的作用。结果表明,尼龙滤网表面形成的自生动态膜层可在一定程度上对膜污染起到延缓作用;平板膜组件经自来水洗-酸洗-碱洗后,膜通量得到有效复原,其中单纯碱洗使膜通量恢复50%左右;尼龙滤网的清洗方式采用大强度的空曝气法,可较为有效的控制滤网表面的污染。Campus sewage was treated by A/O-MBR wastewater treatment system composed of flat-sheet membrane bioreactor technology and anoxic/ aerobic process. Membrane pollution and the role of nylon filters for reducing membrane pollution were investigated. The results showed that membrane pollution could be alleviated by the dynamic film formed on the surface of nylon mesh. The total rate of membrane flux in the system was effectively recovered after flushing ＋ pickling ＋ caustic washing method, and recovery rate of membrane flux by caustic washing was 50% or so. The cleaning method of nylon filter was aeration of high intensity, which could control the surface contamination of nylon filter.

关 键 词：A/O-MBR 尼龙滤网防护罩 动态膜 膜污染 

分 类 号：TQ028.8[化学工程]