| 去除预处理生活污水的潜流人工湿地中试除氮性能 |
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| 引用本文： | 左丽丽,丁爱中,郑 蕾,孙宗健.去除预处理生活污水的潜流人工湿地中试除氮性能[J].环境科学研究,2009,22(9):1063-1067. |
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| 作者姓名： | 左丽丽 丁爱中 郑 蕾 孙宗健 |
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| 作者单位： | 北京师范大学水科学研究院,水沙科学教育部重点实验室,北京 100875 |
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| 基金项目： | 国家"十一五"科技支撑重大项目专题，国家"十一五"科技支撑重点项目专题 |
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| 摘 要： | 为研究人工湿地除氮机制，构建并考察了中试潜流人工湿地对不同形态氮的去除效果，并通过分析出水各种形态氮的分布和湿地系统内部不同形态氮的二维分布特征研究了人工湿地的除氮机制. 结果表明，进水ρ(TN)为30～115 mg/L，ρ(NH4+-N)为25～60 mg/L，ρ(CODCr)为90～190 mg/L，水力停留时间为4 d条件下，氮素被有效去除，TN去除率为32%～70%，NH4+-N去除率为33%～73%；试验系统脱氮的主要方式为硝化/反硝化作用；湿地上部主要进行硝化反应，中下部主要进行反硝化反应；湿地下半部对NH4+-N去除贡献有限，硝化作用受限；欲提高系统除氮效率，需提高溶解氧水平并改善有机氮矿化条件.
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| 关 键 词： | 人工湿地 氮 分布 |
| 收稿时间： | 2008/12/23 0:00:00 |
| 修稿时间： | 2009/2/11 0:00:00 |
Characteristics of Nitrogen Removal from Pre-Treated Domestic Sewage in a Pilot-Scale Subsurface Flow Constructed Wetland |
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| ZUO Li-li,DING Ai-zhong,ZHENG Lei and SUN Zong-jian.Characteristics of Nitrogen Removal from Pre-Treated Domestic Sewage in a Pilot-Scale Subsurface Flow Constructed Wetland[J].Research of Environmental Sciences,2009,22(9):1063-1067. |
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| Authors: | ZUO Li-li DING Ai-zhong ZHENG Lei and SUN Zong-jian |
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| Institution: | Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Water Sciences, Beijing Normal University, Beijing 100875, China |
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| Abstract: | A pilot-scale subsurface flow constructed wetland(CW) was built to remove nitrogen from pre-treated domestic sewage.The planar distribution characteristics of different nitrogen forms within the CW and the composition of different nitrogen forms in inflow/outflow were investigated to study the nitrogen removal mechanism,and the nitrogen removal efficiency was calculated.In the experiment,the inflow had the following concentrations: TN of 30-115(mg/L),(NH_4~+-N) of 25-60(mg/L),COD_(Cr) of 90-190(mg/L) and hy... |
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| Keywords: | constructed wetland nitrogen distribution |
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