纳米TiO2改性膜生物反应器处理污水的研究  

Study on MBR Modified by Nanometer TiO_2 for Wastewater Treatment

作　　者：李照静[1] 张玉先[1] 范建伟 夏脉律 徐勤妹 

机构地区：[1]同济大学污染控制与资源化研究国家重点实验室,上海200092 [2]上海同济科蓝环保设备工程有限公司,上海200092 [3]上海市青浦第二污水处理厂,上海201700

出　　处：《中国给水排水》2008年第3期75-78,共4页China Water & Wastewater

摘　　要：采用喷涂纳米TiO2的方法对聚偏氟乙烯(PVDF)微滤膜进行改性,用改性膜生物反应器(MBR)和非改性MBR处理污水,对比了两者的出水水质、膜通量和膜过滤阻力。结果表明,两套MBR的出水水质均可达到《生活杂用水水质标准》(CJ25.1—89)的要求;纳米TiO2改善了膜表面的亲水性和粗糙度,从而使改性MBR的清水膜过滤阻力和不同抽吸压力下的膜过滤阻力均低于非改性MBR的,而其在不同抽吸压力下的稳定膜通量则高于非改性MBR的。PVDF microfihration membrane was modified by spraying nanometer TiO2. The modified MBR and non-modified MBR were applied to treat the wastewater, and the effluent quality, membrane flux and membrane filtration resistanee were eompared. The results show that the effluent water quality of the both MBRs ean meet the requirement of the Miscellaneous Domestic Water Quality Standard （CJ 25.1 -89）. The hydrophilieity and roughness of the membrane surfaee are improved by nanometer TiO2, so the clean water membrane filtration resistanee and membrane filtration resistanee of the modified MBR under different pump pressure are both lower than that of non-modified MBR, and its membrane flux under different pump pressure is higher than that of non-modified MBR.

关 键 词：纳米TIO2 改性 膜生物反应器 膜过滤阻力 膜通量 

分 类 号：X703.3[环境科学与工程—环境工程]