| 曝气增强垂直潜流型人工湿地脱氮效果研究 |
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| 引用本文： | 李想,崔莉凤.曝气增强垂直潜流型人工湿地脱氮效果研究[J].北京工商大学学报(自然科学版),2009,27(1). |
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| 作者姓名： | 李想 崔莉凤 |
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| 作者单位： | 北京工商大学化学与环境工程学院,北京,100048 |
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| 摘 要： | 构建了一种增强型垂直潜流人工湿地模型,使用人工曝气手段增强人工湿地脱氮效果.增强型人工湿地曝气优选的曝气位置在基质顶面以下约30cm处,优选的气水比为6:1.使用以上条件运行人工湿地的结果表明,曝气点附近硝化反应明显增强.实验数据表明,相同条件下曝气运行时,总氮去除率达到68%,非曝气运行则为55%,但这种方式对COD的去除没有明显的增强作用.
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| 关 键 词： | 人工湿地 曝气 溶解氧 脱氮 |
PERFORMANCE OF NITROGEN REMOVAL IN AERATION ENHANCED VERTICAL SUBSURFACE-FLOW CONSTRUCTED WETLANDS |
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| LI Xiang,CUI Li-feng.PERFORMANCE OF NITROGEN REMOVAL IN AERATION ENHANCED VERTICAL SUBSURFACE-FLOW CONSTRUCTED WETLANDS[J].Journal of Beijing Technology and Business University:Natural Science Edition,2009,27(1). |
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| Authors: | LI Xiang CUI Li-feng |
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| Institution: | College of Chemical and environmental Engineering;Beijing Technology and Business University;Beijing 100048;China |
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| Abstract: | This study build a lab-scale vertical subsurface-flow(VF)constructed wetlands model with aeration to enhance the nitrogen removal efficiency.The prefered efficient aerating position was located at 30 cm below the top of VF base and the prefered air-to-water ratio was 6:1.Running study showed the nitration was increased in the aerated area.Total nitrogen removal rate was 68%higher than nonaeration set with 55%.But the COD removal rate didn't raise with this enhanced way. |
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| Keywords: | constructed wetlands aeration DO nitrogen removal |
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