| Fe~(3+)/N-TiO_2填料日光催化处理微污染源水 |
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| 引用本文： | 刘佳玉,张玉先,杜尔登,赵绪兰.Fe~(3+)/N-TiO_2填料日光催化处理微污染源水[J].中国给水排水,2009,25(9). |
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| 作者姓名： | 刘佳玉 张玉先 杜尔登 赵绪兰 |
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| 作者单位： | 同济大学,污染控制与资源化研究国家重点实验室,上海,200092 |
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| 基金项目： | 小城镇饮用水水质保障关键处理工艺及设备开发项目 |
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| 摘 要： | 采用溶胶凝胶法制备了铁、氮共掺杂二氧化钛(Fe3+/N-TiO2)粉末,通过浸渍涂膜法将其负载到聚丙烯(PP)生物填料上,并考察了日光激发改性TiO2对微污染源水的处理效果.结果表明,铁、氮的掺杂大大提高了TiO2对太阳光的利用效率,当流量为0.12 m3/h时,负载型Fe3+/N-TiO3填料对CODMn和NH+4-N的去除率分别达到59%和75%.采用扫描电镜观察运行前后填料的表面状况,发现Fe3+/N-TiO2膜的保持程度较好,运行3个月后未发生明显脱落;膜表面生长了类似微生物的物质,可以推测在PP填料表面微生物与二氧化钛形成了功能分区,可以同时进行光化学氧化和生物降解作用.
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| 关 键 词： | 太阳光 光催化 改性二氧化钛 微污染源水 |
Research on Micro-polluted Source Water Treatment by Solar Photocatalysis with Fe~(3+)/N-TiO_2 |
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| LIU Jia-yu,ZHANG Yu-xian,DU Er-deng,ZHAO Xu-lan.Research on Micro-polluted Source Water Treatment by Solar Photocatalysis with Fe~(3+)/N-TiO_2[J].China Water & Wastewater,2009,25(9). |
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| Authors: | LIU Jia-yu ZHANG Yu-xian DU Er-deng ZHAO Xu-lan |
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| Affiliation: | State Key Laboratory of Pollution Control and Resources Research;Tongji University;Shanghai 200092;China |
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| Abstract: | Fe3+/N-doped titanium dioxide(Fe3+/N-TiO2) nanopowder was prepared by the sol-gel method and coated by the dipping method on polypropylene bio-filling materials.This modified immobilized titanium dioxide was tested in the treatment of micro-polluted source water by solar photocatalysis.The results show that the titanium dioxide doped by Fe3+/N efficiently utilizes sunlight.When the flow rate is 0.12 m3/h,the degradation rates of CODMn and NH+4-N achieve 59% and 75% respectively.The surface of the filling ma... |
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| Keywords: | sunlight photocatalysis modified titanium dioxide micro-polluted source water |
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