超滤膜净化有机废水及在线水力清洗对膜污染的影响  

Purification of organic wastewater by ultrafiltration and the effects of on-line backwash on membrane fouling

作　　者：王旭东[1] 梁玉龙[1] 王磊[1] 尉娜[1] 

机构地区：[1]西安建筑科技大学环境与市政工程学院,陕西西安710055

出　　处：《工业水处理》2010年第3期48-50,共3页Industrial Water Treatment

基　　金：973国家重点基础研究发展计划前期研究专项(2008CB417211);国家科技部水体污染控制与治理科技重大专项(2009ZX07212-002-004);陕西省自然科学基金项目(SJ08-ZT07);陕西省教育厅专项基金项目(09JK543)

摘　　要：研究了恒压操作下用聚丙烯腈中空纤维超滤膜净化含腐殖酸类有机物废水的效果。结果表明:超滤工艺几乎可完全去除水中的浊度物质,对水中的天然有机物有一定的去除效果。在反冲洗水量相同的条件下,增加反冲洗频率,可大大减缓膜通量的衰减;频繁的在线水力清洗可有效地去除膜表面的污染物,减轻膜污染。The treatment effection of organic wastewater containing humic acid has been studied by using PAN hollow fiber ultrafiltration membrane under the constant pressure operating process. The results show that UF can remove turbidity substances almost completely and remove natural organic substances partly from the wastewater. The increased backwash frequency could greatly slow down the decrease of membrane flux with the same amount of backwash water. Frequent on-line hydraulic cleaning could effectively remove the contaminations on membrane sur- face, which reduces membrane fouling.

关 键 词：超滤 膜污染 在线清洗 有机废水 

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