| 再生水中NO_3~--N、NO_2~--N、NH_4~+-N在粉土介质中迁移转化的研究 |
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| 引用本文： | 王永刚,郑凡东,安同艳,史芫芫,孙长虹.再生水中NO_3~--N、NO_2~--N、NH_4~+-N在粉土介质中迁移转化的研究[J].环境污染与防治,2010,32(1). |
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| 作者姓名： | 王永刚 郑凡东 安同艳 史芫芫 孙长虹 |
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| 作者单位： | 1. 北京市环境保护科学研究院,北京,100037
2. 北京市水利科学研究所,北京,100044 |
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| 摘 要： | 通过土柱实验模拟再生水在粉土层下渗过程中NO3--N、NO2--N、NH4+-N的迁移转化规律。结果表明,实验温度为23.2～25.9℃时,土柱内发生反硝化反应,NO3--N的去除率为9.74%～39.16%,反应符合一级反应动力学方程,衰减系数为0.0968～0.5531m-1;实验温度低于19℃时,土柱内反硝化反应消失,说明低温是制约再生水在土柱内发生反硝化作用的主要因素。
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| 关 键 词： | 膜生物反应器 再生水 硝酸盐 反硝化 粉土 地下水 |
Migration and transformation of NO_3~-—N,NO_2~-—N,and NH_4~+-N of reuse water in silt |
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| Wang Yonggang,Zheng Fandong,An Tongyan,Shi Yuanyuan,Sun Changhong.Migration and transformation of NO_3~-—N,NO_2~-—N,and NH_4~+-N of reuse water in silt[J].Environmental Pollution & Control,2010,32(1). |
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| Authors: | Wang Yonggang Zheng Fandong An Tongyan Shi Yuanyuan Sun Changhong |
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| Institution: | 1.Beijing Municipal Research Academy of Environmental Protection;Beijing 100037;2.Beijing Hydraulic Research Institute;Beijing 100044 |
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| Abstract: | The process of reuse water infiltration in silt was simulated with soil-column method, and the migration and transformation of NO_3~--N, NO_2~--N, and NH_4~+-N in silt were studied. The experiment result showed that denitrification occurred when temperature was 23.2-25.9 ℃, with the NO_3~--N removal rate of 9.74%-39.16%. The process of degradation followed the first-order reaction kinetics model, with the attenuation coefficients ranged from 0.096 8 to 0.553 1 m-1. Denitrification process disappeared when the water temperature was lower than 19 ℃, which indicated that lower temperature inhibited the removal of NO_3~--N. |
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| Keywords: | MBR reuse water nitrate denitrification silt groundwater |
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