| 盐度对污水硝化过程中N2Ｏ产量的影响 |
| 摘要点击 2708 全文点击 1493 投稿时间：2008-05-12 修订日期：2008-09-08 |
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| 中文关键词 硝化 盐度 N2Ｏ |
| 英文关键词 nitrification salinity N2Ｏ |
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| 中文摘要 |
| 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. |
| 英文摘要 |
| The experiment investigated the production and conversion rate of N2Ｏ 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 N2Ｏ using saline sewage was 2.85 times higher than that using municipal wastewater. The production and conversion rate of N2Ｏ during nitrification under different salinities were also investigated. The results showed that the production of N2Ｏ was almost the same when salinity decreased from 7.5 g/L to 5.0 g/L, even 2.5 g/L. However, specific ammonia oxidation rate was increased with the decrease of salinity. The sudden increase of salinity, from 7.5 g/L to 10 g/L, resulted in the increase of N2Ｏ production and conversion rate but decrease of specific ammonia oxidation rate. Consequently, It is important to avoid the severe fluctuation of salinity resulted in the increase of N2Ｏ production and conversion rate. |
