您的位置:首页  > 论文页面

海绵铁及活性氧化铝对降雨径流中磷的吸附效果研究

发表时间:2016-07-31  浏览量:1193  下载量:572
全部作者: 何强,孟捷,古励,潘龙辉,李立青
作者单位: 重庆大学三峡库区生态环境教育部重点实验室;重庆纵横工程设计有限公司;中国地质大学环境学院
摘 要: 随着中国城镇化的逐步加快,城市不透水地面的面积不断增加,暴雨径流携带的污染物质直接汇入水体,其中所含氮磷是导致水体富营养化的重要原因。本研究针对雨水径流中的磷酸盐,采用海绵铁和活性氧化铝两种吸附剂对其进行吸附研究,分析两种吸附剂对模拟径流中磷的吸附效能、吸附热力学和动力学,并研究阴离子对吸附效果的影响。实验结果表明, 海绵铁对磷酸盐的吸附效果好于活性氧化铝,二者对磷酸盐的吸附均符合准二级动力学模型,其中海绵铁的饱和吸附量可达2.42 mg/g. 海绵铁可以作为降雨径流中磷的优选吸附剂。
关 键 词: 市政工程;降雨径流;面源污染;海绵铁;磷;吸附
Title: Study on phosphorus adsorption for rainfall runoff by using sponge iron and activated alumina
Author: HE Qiang, MENG Jie, GU Li, PAN Longhui, LI Liqing
Organization: Key Laboratory of Eco-Environment of Three Gorges Region of Ministry of Education, Chongqing University; Chongqing Zongheng Engineering Design Corporation; School of Environmental Studies, China University of Geosciences
Abstract: With the fast development of China’s urbanization, impervious surface area are commonly found in urban area, rainfall runoff carries pollutants such as nitrogen and phosphorus directly into water bodies, and brings the eutrophication of water body. In this research, two types of adsorbents sponge iron and activated alumina are selected to remove phosphorus in rainwater runoff, adsorption efficiency, adsorption thermodynamics and kinetics of phosphorus in simulated runoff and the effect of anions on the adsorption are investigated. Experimental results show that: sponge iron phosphate adsorption is better than activated alumina; the adsorption process can well be fitted by the pseudo-second-order kinetic model, and the saturated adsorption amount of sponge iron is about 2.42 mg/g. Sponge iron can be used as a recommended phosphorus adsorbent in rainfall runoff treatment.
Key words: municipal engineering; rainfall runoff; non-point pollution; sponge iron; phosphorus; adsorption
发表期数: 2016年7月第14期
引用格式: 何强,孟捷,古励,等. 海绵铁及活性氧化铝对降雨径流中磷的吸附效果研究[J]. 中国科技论文在线精品论文,2016,9(14):1436-1441.
 
0 评论数 0
暂无评论
友情链接