纳滤膜去除水中微量类固醇类雌激素  

Rejection of trance steroid endocrine disruptors in water by nanofiltration membrane

作　　者：程爱华[1,2] 王磊[2] 王旭东[2] 张虹[2] 张莉[2] 张睿[2] 王志盈[2] 

机构地区：[1]西安建筑科技大学环境与市政工程学院,西安710055 [2]西安科技大学地质与环境工程系,西安710054

出　　处：《膜科学与技术》2008年第5期90-93,共4页Membrane Science and Technology

基　　金：国家自然科学基金资助项目(50578131);霍英东教育基金高等院校青年教师优选资助课题(94003);陕西省自然科学基金资助项目(2005E240);陕西省教育厅专项基金(05JK243)

摘　　要：用纳滤膜处理水中微量类固醇类雌激素,用BDXN-90芳香聚酰胺复合纳滤膜,以最常见的雌二醇(E2)、雌三醇(E3)、雌酮(E1)、17α-乙炔基雌二醇(EE2)为研究对象,研究压力、原水浓度、离子强度、和pH等因素对其截留行为的影响.结果表明:纳滤技术是去除水中微量类固醇类雌激素的有效方法,平均截留率在90%以上;纳滤中,截留率随疏水性常数lgKOW的增大而增大,其中EE2>E2>E3>E1;影响膜性能的主要的因素是操作压力、离子强度和pH,原液浓度对膜性能影响不大;最佳去除条件:压力为0.4 MPa,pH=11,电导率为0 mS/cm.Steroid endocrine disruptors, which is trace but more and more noted in aquatic environment, has a significant effect on people＇ s hormone system. Estradiol, estriol, 17α - ethinylestradiol and estrone as research objects, the effects of solution parameters （pH, ionic strength and concentration） and operation pressure on the rejection of trace steroid endocrine disruptors by nanofiltration membrane （NF） （BDXN- 90 polyamind aromatic compound membrane） filtration process were investigated. Experimental results indicated that the trace steroid endocrine disruptors in water could be rejected very effectively by NF, the average rejection efficiency was above 90 %. The rejection of steroid endocrine disruptors increase with the increment of lgKow, among them EE2〉E2 〉E3 〉E1. Pressure, pH and ionic strength played an important role in rejection of steroid endocrine disruptors, but concentration was unimportant. The optimal condition was that the pressure was a 0.4 MPa, pH = 11, the electric conductivity rate 0 mS/cm.

关 键 词：类固醇类雌激素 纳滤膜 膜通量 截留率 

分 类 号：TQ028.8[化学工程]