| 硝态氮在河流渗滤系统中的环境效应 |
| |
| 引用本文： | 李金荣,杨振放,吴耀国. 硝态氮在河流渗滤系统中的环境效应[J]. 郑州大学学报(工学版), 2006, 27(1): 117-120 |
| |
| 作者姓名： | 李金荣 杨振放 吴耀国 |
| |
| 作者单位： | 1. 郑州大学环境与水利学院,河南,郑州,450002
2. 西北工业大学化工系,陕西,西安,710024 |
| |
| 基金项目： | 中国地质调查局资助重大项目(1212010331302) |
| |
| 摘 要： | 采用自行设计的室内土柱实验装置,模拟研究了含有硝态氮污染的河水在渭河渗滤系统中的环境行为及净化机制,其环境行为主要为反硝化作用.得出河流渗滤系统对硝态氮污水有很大的净化作用,其净化程度与该渗滤系统的渗滤介质有关,如果渗滤介质为细粒的黏土层,则对硝态氮污水净化程度很高,其净化率达到100%,但易引起地下水硬度升高等负效应.若介质为粗砂粒物质,其净化程度较低,但不易引起地下水硬度升高.
|
| 关 键 词： | 硝态氮 渗滤系统 环境效应 净化机制 反硝化作用 硬度 |
| 文章编号： | 1671-6833(2006)01-0117-04 |
| 修稿时间： | 2005-11-10 |
Environmental Effect of Nitrate-Nitrogen in River Filtration System |
| |
| LI Jin-rong,YANG Zhen-fang,WU Yao-guo. Environmental Effect of Nitrate-Nitrogen in River Filtration System[J]. Journal of Zhengzhou University: Eng Sci, 2006, 27(1): 117-120 |
| |
| Authors: | LI Jin-rong YANG Zhen-fang WU Yao-guo |
| |
| Abstract: | The infiltration experiment instruments of laboratory soil column with river bed sediments or aquifer material the author used is designed and made by herself,and the author regards it as Wei River filtration system,simulates and studies environmental behavior and purification mechanisms of nitrate-nitrogen penetrating into river filtration system.Denitrification is dominant reaction of behavior of nitrate-nitrogen in soil column infiltration system.We can calculate river filtration system purf nitrate-nitrogen water;its purification degree has relaition to sediment medium. Evidence that denitrification is great in soil column filtration system is obtained.The removal rate of nitrate-nitrogen arrives at 100 percent,but the results of denitrification increase the hardness of groundwater,and bring environmental negative effect.But the removal efficiency is bad in sand column with aquifer material,the results cannot bring environmental negative effect. |
| |
| Keywords: | nitrate-nitrogen filtration system environmental effect purification mechanisms denitrification hardness |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
