微絮凝/中空平板陶瓷膜工艺处理微污染地表水的效能  

Combined Process of Micro‑flocculation+Hollow Flat‑sheet Ceramic Membrane for Treatment of Micro‑polluted Surface Water

作　　者：张瑞君 范忠航 韩正双[2] 闫慧敏[2] 宋佳 田家宇 ZHANG Rui‑jun;FAN Zhong‑hang;HAN Zheng‑shuang;YAN Hui‑min;SONG Jia;TIAN Jia‑yu(School of Civil and Transportation Engineering,Hebei University of Technology,Tianjin 300401,China;Tianjin Public Utility Design&Research Institute,Tianjin 300100,China)

机构地区：[1]河北工业大学土木与交通学院,天津300401 [2]天津市公用事业设计研究所,天津300100

出　　处：《中国给水排水》2023年第11期23-29,共7页China Water & Wastewater

基　　金：国家自然科学基金资助项目(51908180);天津水务集团有限公司科技项目(2021KY-06)。

摘　　要：研究了以中空平板陶瓷微滤膜为核心的微絮凝/微滤组合工艺对微污染地表水的净化效能与膜污染特征,并与传统的PVDF中空纤维有机微滤膜进行了系统对比。结果表明,当微絮凝/微滤组合工艺选用中空平板陶瓷膜时,不仅可以有效地保证出水浊度低于0.3 NTU,而且可以更好地去除分子质量<5 ku的有机物和蛋白质类有机物,最终保证出水CODMn低于3 mg/L,满足《生活饮用水卫生标准》(GB 5749—2022)的相关规定。与此同时,通过膜污染阻力变化、化学清洗效果以及膜面SEM形貌的综合对比分析,证实了中空平板陶瓷膜比中空纤维有机膜具有更强的抗污染能力和易清洁性。Based on the systematical comparison with traditional PVDF hollow fiber MF membrane,the water purification efficiency as well as membrane fouling property of“micro‑flocculation+MF”process was studied by taking the hollow flat‑sheet ceramic MF membrane as the core component.The results showed that the selection of hollow flat‑sheet ceramic membrane in the combined process of“micro‑flocculation+MF”could not only ensure the effluent turbidity lower than 0.3 NTU,but also achieve a higher removal of organic matter with molecular weight less than 5 ku and protein.Consequently,the CODMn of effluent was kept lower than 3 mg/L,which could meet the requirement of the Standards for Drinking Water Quality(GB 5749-2022).In the meantime,it was confirmed that the hollow flat‑sheet ceramic membrane presented stronger anti‑fouling ability and cleanability than the hollow fiber organic membrane after the comprehensive comparison and analysis of membrane fouling resistance change,chemical cleaning efficiency and membrane surface SEM morphology.

关 键 词：微絮凝 中空平板陶瓷膜 中空纤维有机膜 微污染地表水 膜污染 

分 类 号：TU991[建筑科学—市政工程]