| 污水地表漫流处理系统中氮的迁移转化试验研究 |
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| 引用本文： | 曾扬,陈长太.污水地表漫流处理系统中氮的迁移转化试验研究[J].环境科学与技术,2003,26(6):18-19,45. |
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| 作者姓名： | 曾扬 陈长太 |
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| 作者单位： | 1. 湖南省水利厅防汛抗旱指挥部办公室,长沙,410007
2. 河海大学水文水资源及环境学院,南京,210098 |
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| 摘 要： | 采用试验室模拟的方法 ,对污水地表漫流处理系统中氮的迁移转化进行了试验研究 ,并对系统中氮的去除进行了分析。结果表明 ,地表漫流处理系统中氮的迁移转化包含 4个过程 :( 1 )土壤表层对NH4 + 的吸附作用 ,( 2 )NH4 + 的硝化作用 ,( 3)NO3- 向厌氧层的迁移作用 ,( 4 )作物吸收和反硝化作用。其中 ( 3)对整个系统氮的去除率起着决定性作用 ,可以通过投加CaCO3来强化系统的脱氮能力
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| 关 键 词： | 地表漫流处理系统 氮 硝化作用 反硝化作用 作物吸收 |
| 文章编号： | 1003-6504(2003)06-0018-03 |
Experimental Study on Nitrogen Migration/Transformation in Overland-flow Wastewater Treatment System |
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| ZENG Yang,CHEN Chang-tai.Experimental Study on Nitrogen Migration/Transformation in Overland-flow Wastewater Treatment System[J].Environmental Science and Technology,2003,26(6):18-19,45. |
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| Authors: | ZENG Yang CHEN Chang-tai |
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| Institution: | ZENG Yang~1,CHEN Chang-tai~2 |
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| Abstract: | A simulation experiment conducted shows overland flow treatment consists of four processes in terms of N migration and transformation: (1) adsorption of NH_4~+ by soil surface; (2) nitrification of NH_4~+; (3) migration of NO_3~- to the anaerobic zone; and (4) removal by uptake and/or de-nitrification. The paper also concludes that process (3) migration of NO_3~- predominates the overall N removal and that de-nitrification rate can be enhanced by CaCO_(3)application. |
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| Keywords: | overland flow treatment system nitrogen nitrification de-nitrification plant uptake |
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