| 常温SBR亚硝化快速启动及优化试验研究 |
| 摘要点击 2450 全文点击 1356 投稿时间：2010-06-08 修订日期：2010-08-23 |
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| 中文关键词 常温 亚硝化 SBR 游离氨 溶解氧 |
| 英文关键词 room temperature nitrosation sequencing batch reactor（SBR） free ammonia dissolved oxygen |
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| 中文摘要 |
| 采用SBR反应器，在高、低氨氮浓度（245.28 mg/L与58.08 mg/L）交替进水及低DO浓度（0.15～0.40 mg/L）的条件下，经过33周期（20 d）的连续运行亚硝化率基本维持在85%左右，成功抑制了亚硝酸盐氧化菌的生长，从而实现了亚硝酸盐氮的大量积累，并考察了低氨氮浓度进水条件下，5个不同DO浓度对亚硝酸盐氮积累的影响.结果表明，在温度为22.3～27.6℃时，5个不同DO平均浓度水平（0.27、 0.48、 0.72、 0.99、 1.47 mg/L）下，亚氮增长速率［Δc(NO- 2-N)/t］与硝氮增长速率［Δc(NO- 3-N)/t］的比值分别为16.37、 17.28、 17.69、 7.29、 3.64，相应地亚硝化率分别为95.28%、 94.49%、 94.64%、 87.84%和78.63%.综合试验结果，将 DO平均浓度为0.72 mg/L、曝气时间为4 h确定为亚硝化运行的准佳工况.在该工况下连续运行23个周期（13 d），亚硝化率基本可以维持在94%左右. |
| 英文摘要 |
| The nitrosation rate was around 85% after 33 continuous cycles（20 d）with the alternative influent of high and low ammonium wastewater in a sequencing batch reactor（SBR）which low oxygen（0.15-0.40 mg/L）. The growth of nitrobacteria was inhibited successfully which led to a steady and high accumulation of nitrite. The effects of five different DO concentrations were investigated with low ammonium influent on nitrite accumulation. The results clearly showed that ratios of the nitrite accumulation rate［Δc(NO- 2-N)/t］to that of nitrate accumulation［Δc(NO- 3-N)/t］were 16.37， 17.28， 17.69， 7.29， 3.64 at five different DO concentrations（0.27， 0.48， 0.72， 0.99， 1.47 mg/L ），respectively. The corresponding nitrosation rates were 95.28%，94.49%，94.64%，87.84% and 78.63% at the temperature of 22.3-27.6℃. Results showed that a maximum of 94% nitrosation efficiency was reached with average DO concentration of 0.72 mg/L and the aeration time of 4 hours at normal temperature after 23 continuous cycles（13 d）. |
