纳滤膜去除水中微量邻苯二甲酸酯的研究  

REMOVAL OF TRACE PHTHALATE ACID ESTERS IN WATER BY NANOFILTRATION MEMBRANE

作　　者：程爱华[1] 王磊[1] 王旭东[1] 林锋[1] 张莉[1] 张睿[1] 

机构地区：[1]西安建筑科技大学环境与市政工程学院

出　　处：《水处理技术》2007年第11期14-16,共3页Technology of Water Treatment

基　　金：国家自然科学基金资助项目(50578131);霍英东教育基金会青年教师基金优选资助课题(94003)

摘　　要：邻苯二甲酸酯(PAEs)是一类环境雌激素,对人体健康造成严重危害。本研究运用纳滤膜处理水中微量PAEs,以最常用的邻苯二甲酸二乙酯(DEP),邻苯二甲酸二丁酯(DBP),邻苯二甲酸二环己酯(DCHP),邻苯二甲酸二异辛酯(DEHP)为研究对象,研究压力、原水浓度、离子强度、和pH值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PAEs的有效方法,平均截留率在90%以上;纳滤过程中,截留率随物质分子量的增加而增加;影响膜性能的主要的因素是操作压力、离子强度和pH值,原液浓度对膜性能影响不大;最佳去除条件为:压力0.4MPa,pH=7,电导率为0.2μS/cm。Phthalate acid esters are a sort of environmental estrogenic hormones, which has a significant effect on people＇s hormone systems. With DEHP, DCHP, DBP, DEP as studied objects, the effect of solution parameters （pH, ionic strength and concentration） and operation pressure on the retention of trace PAEs by nanofiltration membrane （NF） （BDXN-90 polyamind aromatic compound membrane） filtration process were investigated. Experimental results indicated that the trace PAEs in water could be removed very effectively by NF, the average removal rate was above 90%. The removal of PAEs increased with the increment of the molecular weight; pressure, pH and ionic strength played an important role in removal of PAEs, but concentration had not obvious influence on the membrane performance. The optimal conditions are： the pressure is 0.4 MPa, pH=7, the electric conductivity rate is 0.2 μS/cm.

关 键 词：邻苯二甲酸酯 纳滤膜 膜通量 截留率 

分 类 号：TQ028.8[化学工程]