气提式内循环硝化反应器运行性能的研究

气提式内循环反应器具有很好的生物硝化性能，能承受高进水氨浓度（78.49mmol/L），具有高容积转化效率（163.18 mmol/L·d），运行性能稳定（氨去除率保持在94.42%以上）。在气提式内循环反应器的运行过程中，可产生硝化颗粒污泥。颗粒污泥开始出现的时间约为45d，颗粒污泥的粒径平均值0.83 mm，沉降速度55.53m/h，氨氧化活性0.95mmol (NH⁺₄-N)/g(VS)·d。硝化颗粒污泥也具有厌氧氨氧化活性，氨氧化速率0.23mmol (NH⁺₄-N)/g(VS)·d，亚硝酸还原速率0.24mmol (NO^-₂-N)/g(VS)·d。

Performance of Internal-loop Air-lift Nitrifying Bioreactor

The performance of internal-loop air-lift nitrifying bioreactor was good with strong tolerance to influent ammonia concentration (78.49 mmol/L), high volume converting rate (163.18 mmol/L.d) and obvious working stability (ammonia removal > 94.42%). During operation of internal-loop air-lift bioreactor, the nitrifying activated sludge was granulated. The nitrifying granular activated sludge began to appear on day 45. Its average diameter was 0.83 mm, settling velocity was 55.53 m/h and specific ammonia removal rate was 0.95 mmol (NH4(+)-N)/g (VS).d. The nitrifying granular activated sludge had the activity for anaerobic ammonia oxidation with ammonia oxidation rate of 0.23 mmol (NH4(+)-N)/g(VS).d and nitrite reduction rate of 0.24 mmol (NO2(-)-N)/g(VS).d.