【作者】 徐国良； 樊耀波； 于艳； 袁栋栋； 杨文静； 吴光夏； 秦升益； 徐云；

【Author】 XU Guoliang~1,FAN Yaobo~1,YU Yan~1,YUAN Dongdong~1, YANG Wenjing~1,WU Guangxia~1,QIN Shengyi~2,XU Yun~3 (1.Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China;2.Beijing Rechsand Science & Technology Group Co.,Ltd,Beijing 100085,China; 3.Beijing Zhongguancun International Environmental Protection Industry Promotion Center Co.,Ltd.,Beijing 100080,China)

【机构】 中国科学院生态环境研究中心； 北京仁创科技集团有限公司； 北京中关村国际环保产业促进中心有限公司；

【摘要】 以铸砂板模块作为基材进行动态膜研究发现,由于严重的膜孔堵塞,其通量仅在2～7 L/(m~2·h),且运行周期短,不具有工业应用价值,需要对其进行表面改性.以50～100目为优化砂材粒径,以PVDF膜原液为优化覆膜材料和浓度,对铸砂板模块进行覆膜改性,研制出一种覆膜铸砂板式膜组件.依托该膜组件构建一种新型膜生物反应器,并对其进行了污水处理中试研究.在16.15 L/(m~2·h)的条件下,中试系统运行可靠稳定.对比常规有机平板膜组件,覆膜铸砂板式膜组件强度高、寿命长,污水处理膜折旧费用为0.203元/m~3,低于常规有机平板膜组件,具有较好实用前景.更多还原

【Abstract】 Membrane flux of the original molded sand plate module was quite small,only 2～7 L/(m~2 h), and the operation cycle duration was short,when it served as the support material of self-forming dynamic membrane.To improve the membrane flux,surface modification was conducted by coating the molded sand plate module with organic membrane materials.The optimized parameters included sand sizes,the composition and the concentration of organic membrane solution.The optimal values were 50～100 mesh numbers for the sand materials,and the original concentration of PVDF for the organic membrane solution, respectively.Finally,a novel type of sand plate membrane module was developed after its surface modification.A test of a submerged MBR for pilot-scale study at 16.15 L/(m2 h) with this type of membrane modules was conducted,and the system performed stably.The depreciation of this membrane module was about 0.203 yuan/m~3,lower than that of conventional organic flat sheet membrane module.It will be a promising technology used in MBR for wastewater treatment given its high strength,long life-span.更多还原