| 不同种泥的厌氧氨氧化反应器的启动及动力学特征 |
| 摘要点击 1548 全文点击 608 投稿时间：2018-06-12 修订日期：2018-08-28 |
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| 中文关键词 厌氧氨氧化(ANAMMOX) 接种污泥 脱氮性能 动力学特征 微生物群落 |
| 英文关键词 anaerobic ammonium oxidation(ANAMMOX) seed sludge nitrogen removal performance kinetics microbial community |
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| 中文摘要 |
| 采用2套UBF反应器R1和R2，R1接种好氧硝化污泥与厌氧氨氧化-反硝化污泥的混合污泥，R2接种厌氧消化絮状污泥与厌氧氨氧化-反硝化污泥的混合污泥，采用逐渐提高进水亚硝氮和氨氮浓度的方式富集培养ANAMMOX菌.结果表明，R1启动时间短，仅耗时36 d就成功启动了厌氧氨氧化反应器，而R2则需要53 d；R1和R2脱氮效果均较好，但R1脱氮效果优于R2且稳定.在稳定运行阶段，R1氨氮、亚硝氮和总氮去除率分别为99.92%、96.64%和81.87%左右，R2氨氮、亚硝氮和总氮去除率分别为97.54%、94.91%和80.98%左右.反应器启动成功后，Candidatus Kuenenia属在所检测出的属中丰度位列前六，在R1和R2中的相对丰度分别为3.22%和2.35%；改进的Stover-Kincannon基质去除模型和二级动力学模型对拟稳态阶段R1和R2的脱氮性能均能进行较好地拟合，经计算，R1的最大基质去除速率Umax稍大于R2，说明R1的脱氮潜力较大. |
| 英文摘要 |
| Two different mixed sludges (aerobic nitrifying sludge and ANAMMOX-denitrification sludge:R1, and anaerobic digestion flocculent sludge and ANAMMOX-denitrification sludge:R2), were used as inocula in two UBF reactors to enrich Anammox bacteria. Both kinds of mixed sludge set up the Anammox process successfully. It took 36 days for R1, while R2 required 53 days. Nitrogen removal rates of R1 and R2 were high during the whole operation. During the stable operation stage, the removal rates of NH4+-N, NO2--N, and TN were about 99.92%, 96.64%, and 81.87% for R1; and 97.54%, 94.91%, and 80.98% for R2. Illumina High-throughput Sequencing revealed Candidatus Kuenenia was in the top six taxa in the two reactors with 3.22% relative abundance in R1 and 2.35% in R2 after the successful start-up. Simulation results indicated that the Modified Stover-Kincannon model and the second-order model were appropriate models. It was deduced that the N-removal potential of R1 was a little greater than that of R2 after comparing the projected maximum substrate removal rate Umax of the two reactors. |
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