【摘要】 采用A/O工艺处理模拟高氨氮废水,在一定条件下实现了稳定的短程硝化(积累率≥80%),污泥沉降性能良好,短程硝化后期污泥沉降性能逐渐恶化。实验结果表明,通过补充废水的N/P虽然能够略微降低SVI,但是仍然不能有效的缓解污泥膨胀。当COD负荷>0.27kg/(kg.d)时发生污泥膨胀。将DO控制在1.5～2.0mg/L,沉淀池的固液分离效果良好,并且氨氮去除率、COD去除率和亚硝氮积累率均>90%,污泥膨胀现象得到有效控制。更多还原

【Abstract】 A/O technique was used to treat simulated high ammonia wastewater,the stability short-cut nitrification could be implemented by controlling the right content(accumulation rate≥80%),the activated sludge had good settling property,in the late of the short-range nitrification it was degraded gradually.It is showed by the experimental results that increasing N/P ratio in the wastewater can slightly drop SVI,but still can not effectively ease the sludge bulking.The bulking sludge would be occurred when COD load was above 0.27 kg/(kg·d).Controlled DO with 1.5 to 2.0 mg/L,the solid-liquid separation result is good,and the removal rates of NH+4-N and COD,as well as the cumulative rate of nitrite nitrogen are greater than 90%,sludge bulking can be effectively controlled.更多还原