陶瓷膜表面粗糙度对含油废水过滤性能的影响  

Effect of surface roughness of ceramic membrane on the performance of filtrating oily wastewater

作　　者：张兵兵[1] 仲兆祥[1] 邢卫红[1] 

机构地区：[1]南京工业大学化学化工学院,材料化学工程国家重点实验室,南京210009

出　　处：《膜科学与技术》2011年第4期42-47,共6页Membrane Science and Technology

基　　金：国家重点基础研究发展规划(2009CB623400);国家自然科学基金项目(20636020,20806038);江苏省高校科研成果产业化推进项目(JH07-014);江苏省“六大”人才高峰项目;江苏省自然科学基金(BK2008504)

摘　　要：采用表面粗糙度仪、扫描电子显微镜(SEM)和三维非接触表面形貌仪(WLI)表征膜表面形貌,并考察了陶瓷膜表面粗糙度对过滤含油废水性能的影响.结果显示,具有不同表面粗糙度的相同孔径陶瓷膜,其纯水通量基本相同;粗糙度越大的膜,过滤含油废水的膜通量衰减越快,稳定通量也越低;陶瓷膜表面粗糙度对油截留率基本没有影响;废水中油滴粒径的变化对粗糙度大的膜的稳定通量影响显著,表明光滑膜更适合于处理含油废水.The information of surface morphology was provided by surface roughness tester, scanning electron microscopy （SEM） and white light interferometer （WLI）, and the effect of surface roughness of ceramic membrane on the performance of filtrating oily wastewater was investigated. The ceramic membranes with the same pore size and different surface roughness had the same pure water flux. The results of filtrating oily wastewater indicated that the rougher membranes had larger flux decline and lower steady flux than that of smoother ones. With the change of droplet size in the wastewater, the rougher membrane had the larger change of the steady flux. Surface roughness had little effect on oil rejection. This study indicated that smoother membrane was suitable for treating oily wastewater.

关 键 词：陶瓷膜 表面形貌 植物油 废水 

分 类 号：X703[环境科学与工程—环境工程]