两种脱氮除磷污水处理工艺的效果分析

Efficiency Analysis of Two Sewage Treatment Processes for Nitrogen and Phosphorus Removal

结合郑州市马头岗污水处理厂的运行情况,对比分析了倒置A2/O工艺与UCT工艺的运行效果。结果表明,倒置A2/O工艺与UCT工艺对污水中COD、BOD5、SS、NH3-N的去除效果并无明显差异,两种工艺对这些指标的去除率都较高,月平均去除率都能达到90%以上,但两种工艺对TP和TN的去除效果略有差异,倒置A2/O工艺对TP和TN的去除率高于UCT工艺主要是受进水碳源和混合液回流等条件影响所致。

Based on the running conditions of Matougang Sewage Treatment Plant, the comparative analysis of operation efficiency between the reversed A^2/O process and the UCT process was performed. The results show that there is no significant difference in removal of COD, BOD5 , SS and NH3 - N. In the two processes, the removal rates of these indicators are higher, and the monthly average removal rates can reach more than 90%. However, the two processes have slight difference in the removal of TP and TN. The removal rates of TP and TN in the reversed A^2/O process are higher than those in the UCT process, which is due to the influence of influent carbon source and mixed liquid return.