| 盐度对污水硝化过程中N_2O产量的影响 |
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| 引用本文： | 尚会来,彭永臻,张静蓉,叶柳,赵凯峰.盐度对污水硝化过程中N_2O产量的影响[J].环境科学,2009,30(4). |
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| 作者姓名： | 尚会来 彭永臻 张静蓉 叶柳 赵凯峰 |
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| 作者单位： | 北京工业大学北京市水质科学与水环境恢复工程重点实验室,北京,100124 |
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| 基金项目： | 国家科技支撑计划重点项目，北京市教委高层次人才资助计划项目 |
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| 摘 要： | 采用调节盐度(7.5 g/L)和未调节盐度(0.1 g/L)实际生活污水驯化的活性污泥,分别考察了其相应硝化过程中N2O的产量和转化率.结果表明,盐度7.5 g/L生活污水硝化过程中N2O产量是未调节盐度N2O产量的2.85倍.考察其他盐度下污水硝化过程中N2O产量与转化率的结果表明,盐度从7.5 g/L降低到5.0、2.5 g/L后,N2O产量变化不大,但系统比氨氧化速率随着盐度的下降有所增加;当盐度从7.5 g/L急剧增加到10 g/L后,硝化过程中N2O产量和转化率均有大幅升高,产量达到7.5 g/L时的2.2倍,比氨氧化速率大幅下降.因此处理含盐污水时,应尽量避免盐度的过高波动,防止污水硝化过程中N2O产量和转化率大幅地升高.
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| 关 键 词： | 硝化 盐度 |
Effects of Salinity Concentration on N_2O Production During Nitrification |
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| SHANG Hui-lai,PENG Yong-zhen,ZHANG Jing-rong,YE Liu,ZHAO Kai-feng.Effects of Salinity Concentration on N_2O Production During Nitrification[J].Chinese Journal of Environmental Science,2009,30(4). |
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| Authors: | SHANG Hui-lai PENG Yong-zhen ZHANG Jing-rong YE Liu ZHAO Kai-feng |
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| Institution: | Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering;Beijing University of Technology;Beijing 100124;China |
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| Abstract: | The experiment investigated the production and conversion rate of N_2O during nitrification using saline sewage and municipal wastewater.Different kinds of sludge were used,domesticated by saline sewage influent(salinity 7.5(g/L)) and municipal wastewater(salinity 0.1(g/L)),respectively.The results showed that the production of N_2O using saline sewage was 2.85 times higher than that using municipal wastewater.The production and conversion rate of N_2O during nitrification under different salinities were al... |
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| Keywords: | N2O |
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