不同接种污泥对厌氧氨氧化菌富集过程的影响研究

Enrichment of Anammox Bacteria with Different Inoculation Sludge

本研究在R1和R2两个反应器中分别接种活性高的硝化污泥和反硝化污泥以考察不同接种污泥对厌氧氨氧化菌富集过程的影响。研究结果表明,R1反应器以硝化污泥作为接种污泥,培养过程中未出现明显的菌体自溶阶段,经过约60 d成功启动厌氧氨氧化反应;R2反应器以反硝化污泥作为接种污泥,出现较长的菌体自溶期,启动厌氧氨氧化反应时间比R1反应器约长20天。R1反应器和R2反应器中厌氧氨氧化反应稳定运行期间,NH+4-N去除量:NO-2-N去除量:NO-3-N生成量平均值分别为1:1.30:0.23和1:1.35:0.10。

The effect of different types of seed sludge on the enrichment of anammox bacteria was investi-gated by inoculating the sludge with high nitrifying and denitrifying activity in two reactors, namely R1 and R2, respectively. The results showed that the bacteria autolysis was not obviously observed in R1, which was seeded with nitrifying sludge. And after about 60 days the anaerobic ammonium oxidation (ANAMMOX) process was started up in R1. However, a long period of bacteria autolysis phase appeared in R2, which was seeded with denitrifying sludge. Thus the start-up time of ANAMMOX in R2 was about 20 days longer than in R1. During the stationary stage, the average ratios of NH+4-N;removal NO-2-N;removal and NO-3-N;production in R1 and R2 were 1:1.30:0.23 and 1:1.35:0.10, respectively.