陶瓷膜处理二级出水运行优化控制与膜污染机制分析  

Operational optimization control and membrane fouling mechanism analysis of ceramic membrane treating secondary treated effluent

作　　者：张守彬[1] 钟敬秀 赵世凯[3] 索宁[1] 刘贵彩 谢康[1] 王凤超 刘译阳 鞠伟澎 ZHANG Shoubin;ZHONG Jingxiu;ZHAO Shikai;SUO Ning;LIU Guicai;XIE Kang;WANG Fengchao;LIU Yiyang;JU Weipeng(School of Civil Engineering and Architecture,University of Jinan,Jinan 250022,China;Jinan Water Group Co,Ltd,Jinan 250012,China;Shandong Industry Ceramics Research and Design Institute,Zibo 255000,China)

机构地区：[1]济南大学土木建筑学院,济南250022 [2]济南水务集团有限公司,济南250012 [3]山东工业陶瓷研究设计院有限公司,淄博255000

出　　处：《环境工程学报》2021年第10期3233-3243,共11页Chinese Journal of Environmental Engineering

基　　金：山东省重点研发计划(2016CYJS07A03-2)。

摘　　要：实现膜污染有效控制是充分发挥陶瓷膜在废水处理及回用领域适用性的关键。为此,构建了平板陶瓷膜反应器,针对性地开展了平板陶瓷膜处理市政污水二级出水运行优化控制与膜污染机制分析研究。结果表明,通过四因素三水平正交实验,得出本实验条件下最佳运行控制工况为:蠕动泵转速200 r·min^(−1)(对应初始膜通量200 L·(m^(2)·h)^(−1))、过滤时间10 min、水力反冲时间30 s、间歇运行时间2 min;在此运行工况下,平板陶瓷膜可保持平均膜通量43.08 L·(m^(2)·h)^(−1)以上稳定运行16 d(384 h),期间系统出水浊度、色度、COD等水质指标稳定满足《城市污水再生利用城市杂用水水质》(GB/T 18920-2002)标准要求;原水和膜污染层元素及官能团对比表征结果表明,脂肪族类、酰胺类、无机硅化物类以及无机金属离子是造成膜污染的主要污染物,而凝胶层阻力则对平板陶瓷膜膜污染形成起主导作用。Achieving effective control of membrane fouling was the key to giving full play to the applicability of ceramic membrane in the field of wastewater treatment and reuse.In this study,a flat sheet ceramic membrane reactor was constructed,and the operational optimization control and membrane fouling mechanism analysis of flat sheet ceramic membrane treating secondary effluent from municipal sewage treatment plant were carried out.Through a four-factor three-level orthogonal test,the optimal operating control condition of flat sheet ceramic membrane treating secondary effluent was determined as follows:peristaltic pump speed was 200 r·min^(−1) corresponding to the initial membrane flux of 200 L·(m^(2)·h)^(−1),filtration time was 10 minutes,hydraulic backwashing time was 30 seconds,and intermittent running time was 2 minutes.Under this optimal operating condition,the flux of flat sheet ceramic membrane could maintain stable running for 16 d(384 h)over the average membrane flux of 43.08 L·(m^(2)·h)^(−1).During this period,turbidity,chroma,COD and other water quality indicators of the effluent could stably meet the standard requirements of The Reuse of Urban Recycling Water—Water Quality Standard for Urban Miscellaneous Water Consumption(GB/T 18920-2002).The comparative characterization results of elements and functional groups of the raw water and the membrane fouling layer showed that aliphatics,amides,inorganic silicides and inorganic metal ions were the main pollutants that caused membrane fouling.And the resistance of the gel layer played the leading role in the fouling formation of flat sheet ceramic membrane.

关 键 词：平板陶瓷膜 市政污水二级出水 正交实验 运行优化 膜污染机制 

分 类 号：X703.1[环境科学与工程—环境工程]