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| 铝盐混凝除砷影响因素及机制研究 | |
| 引用本文： | 陈桂霞,胡承志,朱灵峰,童华卿.铝盐混凝除砷影响因素及机制研究[J].环境科学,2013,34(4):1386-1391. |
| 作者姓名： | 陈桂霞 胡承志 朱灵峰 童华卿 |
| 作者单位： | 1. 中国科学院生态环境研究中心环境水质学国家重点实验室,北京100085;华北水利水电学院环境与市政工程学院,郑州450011 2. 中国科学院生态环境研究中心环境水质学国家重点实验室,北京,100085 3. 华北水利水电学院环境与市政工程学院,郑州,450011 |
| 基金项目： | 国家自然科学基金项目(21177144); 国家高技术研究发展计划(863)项目(2012AA062604); 北京市教育委员会共建项目 |
| 摘 要： | 铝盐混凝法被广泛应用于饮用水除砷工程.本研究选取三氯化铝(AlCl3)和富含Al13的聚合氯化铝(PACl)为絮凝剂,考察铝形态、pH值、腐殖酸(HA)以及共存阴离子对砷去除的影响与机制.结果表明,2种絮凝剂对As(Ⅲ)去除效能较低,对As(Ⅴ)去除率可达到近100%.pH影响混凝过程中铝形态分布,从而对铝盐混凝除砷效能产生重要影响.铝盐除砷效能与混凝过程中的Al13形态含量呈正相关关系.由于竞争吸附作用,HA和部分共存阴离子对砷的混凝去除产生负面影响.HA对混凝效能影响与絮凝剂投药量相关,投药量越低,则影响越大.PO34-和F-对混凝除砷效能影响显著,SiO23-、CO23-和SO24-对混凝除砷效能影响较小.本研究将对饮用水强化混凝去除原水中砷具有指导意义. |
| 关 键 词： | 砷 混凝 铝盐 Al13形态 饮用水 |
| 收稿时间： | 2012/10/22 0:00:00 |
| 修稿时间： | 1/4/2013 12:00:00 AM |
Influencing Factors and Mechanism of Arsenic Removal During the Aluminum Coagulation Process |
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| CHEN Gui-xi,HU Cheng-zhi,ZHU Ling-feng and TONG Hua-qing.Influencing Factors and Mechanism of Arsenic Removal During the Aluminum Coagulation Process[J].Chinese Journal of Environmental Science,2013,34(4):1386-1391. | |
| Authors: | CHEN Gui-xi HU Cheng-zhi ZHU Ling-feng and TONG Hua-qing |
| Institution: | State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;Institute of Environmental & Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450011, China;State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;Institute of Environmental & Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450011, China;State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China |
| Abstract: | |
| Keywords: | arsenic coagulation aluminum coagulant Al13 species drinking water |
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