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| 包气带中铅的垂直污染机理研究 | |
| 引用本文： | 李志萍,陈肖刚,张宏达. 包气带中铅的垂直污染机理研究[J]. 华北水利水电学院学报, 2002, 23(4): 68-70 |
| 作者姓名： | 李志萍 陈肖刚 张宏达 |
| 作者单位： | 1. 中国地质大学水资源与环境工程学院,北京,100083;华北水利水电学院,河南,郑州,450045 2. 河南省地质工程公司,河南,郑州,450053 3. 中国地质大学水资源与环境工程学院,北京,100083 |
| 基金项目： | 国家自然科学基金项目 (49832 0 0 5 ) |
| 摘 要： | 通过对 3种不同介质的包气带对排污河渠中铅的去除模拟实验研究发现 ,不同的介质对排污河渠中的铅都具有去除和净化的功能 ,并且随着包气带深度的增加 ,铅的去除率逐渐升高 ;不同的介质对铅的去除效果不同 ,中砂对铅的去除明显优于粗砂 .铅去除的机理为吸附和沉淀 .包气带对铅去除的影响因素有 :介质的颗粒大小、不均匀系数、粘粒物质含量、温度、pH值等 .铅一般截留于土壤和沉积物中 ,不会造成对地下水的污染 |
| 关 键 词： | 排污河渠 包气带 铅去除 |
| 文章编号： | 1002-5634(2002)04-0068-03 |
| 修稿时间： | 2002-07-26 |
Research on the Mechanism of Lead Vertical Pollution in Unsaturated Zone |
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| LI Zhi ping ,,CHEN Xiao gang ,ZHANG Hong da. Research on the Mechanism of Lead Vertical Pollution in Unsaturated Zone[J]. Journal of North China Institute of Water Conservancy and Hydroelectric Power, 2002, 23(4): 68-70 | |
| Authors: | LI Zhi ping CHEN Xiao gang ZHANG Hong da |
| Affiliation: | LI Zhi ping 1,2,CHEN Xiao gang 3,ZHANG Hong da 1 |
| Abstract: | Through imitative experiment research on lead removal of contaminated rivers and ditches by three kinds of media of unsaturated zone,it is found that lead in contaminated rivers and ditches can be removed and depurated by different media, and removal ratio of lead increases with depth Different media have different removal results:medium sand have a higher removal ratio than coarse sand. Mechanism of lead removal is sorption and precipitation.Influential factors of unsaturated zone on lead removal are grain size of media, variation coefficient, clay content, temperature and pH et al Lead generally is caught in soil and sediment, and it doesn't contaminate groundwater |
| Keywords: | contaminated rivers and ditches unsaturated zone lead removal |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |