【摘要】 对短程硝化污泥施以不同辐照比例（0、40%、60%、100%）的超声波处理,通过调节曝气量研究辐照污泥比例对短程硝化的影响。在1. 6 L/min曝气量的冲击下,即使加入超声波辐照也不能阻止短程硝化被破坏。将曝气量降至0. 8 L/min后超声波辐照组均能在5 d内快速恢复短程硝化。之后提高曝气量至1. 2 L/min进行冲击,仅辐照污泥比例为60%和100%时能维持短程硝化。在这2个阶段,辐照比例为100%的NO₂^- -N积累率在各组反应器中保持最高,分别维持在（81. 4±2. 0）%和（72. 4±3. 3）%。随着辐照比例的增加,亚硝酸盐氧化菌（NOB）活性降低而氨氧化菌（AOB）活性变化不明显,同时扫描电镜观察发现,污泥中螺旋菌比例减少,而球菌和短杆菌比例增加。更多还原

【Abstract】 The partial nitrification sludge was irradiated by ultrasound,and the effect of irradiated sludge ratio （0,40%,60% and 100%） on partial nitrification was studied by adjusting the aeration amount. The results showed that under the impact of aeration amount of 1. 6 L/min,even if ultrasonic irradiation was added,the destruction of partial nitrification could not be prevented. After the aeration amount was reduced to 0. 8 L/min, the ultrasonic irradiation group could quickly recover partial nitrification within 5 days. After increasing the aeration amount to 1. 2 L/min for impact,partial nitrification could be maintained only when the irradiated sludge ratio was 60% and 100%. In these two stages,the NO₂^- -N accumulation rate with 100% irradiation ratio was the highest in each reactor,which was （81. 4 ± 2. 0） % and （72. 4 ± 3. 3） %,respectively. With the increase of the irradiation ratio,the activity of nitrite oxidizing bacteria （NOB） decreased and that of ammonia oxidizing bacteria （AOB） did not change significantly,and scanning electron microscopy showed that the Spirulina decreased,while the ratio of coccus and bacillus increased.更多还原