%0 Journal Article
%T Study on fouling of ion exchange membranes used for oil-field wastewater<br>采油污水对离子交换膜的污染研究
%A JING Guolin
%A WANG Xiaoyu
%A ZHAO Hai
%A <br>荆国林
%A 王晓玉
%A 赵海
%J 环境科学学报
%D 2007
%I 
%X In order to reduce the fouling of ion exchange membranes used to treat oilfield wastewater,electrodialysis technology was applied to achieve benign circulation of polymer-flooding oilfield wastewater. Parameters including elapsed time, average current, and membrane surface resistance were measured under the same operating conditions until the electrical conductivity of dilute solution decreased to 0.9 mS·cm-1. The fouling status of the ion exchange membrane was investigated. The effects of suspended solids, polymer, and crude oil in the oilfield wastewater on the performance of ion exchange membranes were studied. The experimental results show that suspended solids collected on the surfaces of, and even inside, both anionic and cationic membranes, producing fouling, but the effect was greater on the cationic membrane. The polymer may congregate on the surface of anion membrane, which influences the permeation of the anionic membrane; and crude oil can form a compact oil film on the surface of, and even inside, the anionic membrane, which results in severe fouling, but these mechanisms have less effect on the cationic membrane. The first, acid and alkali is utilized to clean the anionic membrane. The second, the membrane is cleaned by non-ionic surfactant (AEO-9), and adding a small quantity of a washing aid (such as STPP), the anionic membrane could be restored effectively.
%K membrane fouling
%K electrodialysis
%K oilfield wastewater
%K membrane surface resistance
%K electric conductivity<br>膜污染
%K 电渗析
%K 采油污水
%K 膜面电阻
%K 电导率
%K 采油污水
%K 阴离子交换膜
%K 污染研究
%K wastewater
%K used
%K membranes
%K ion
%K exchange
%K fouling
%K 恢复
%K 过滤能力
%K 三聚磷酸钠
%K 助洗剂
%K 添加
%K 清洗剂
%K 非离子表面活性剂
%K 酸碱液
%K 利用
%K 重污染
%K 油膜
%K 透过性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=815415A8B6CEB9263D13F8E41A6E6880&yid=A732AF04DDA03BB3&vid=DB817633AA4F79B9&iid=5D311CA918CA9A03&sid=10592E9CA5FCF96B&eid=EB4DE9DC132993F4&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=0&reference_num=14