倒置A^2/O工艺对城市污水的处理效果分析

Effect Analysis of Inverted A^2/O Process for Treating Municipal Sewage

考察了西安市第四污水处理厂的倒置A2/O工艺在半年多时间内的实际运行效果。结果表明:该工艺具有抗冲击负荷能力强、处理效果好、出水水质稳定的优点,监测期间对COD、TN、NH3-N、TP、SS的平均去除率分别为90.5%、67.18%、86.43%、54.8%、95.8%。另外,还对运行过程中二沉池污泥上浮、反应池除磷效果不理想等问题进行了分析,并提出了相应的对策,可为同类型污水处理厂的优化设计及运行管理提供参考。

The actual operation effect of the inverted A2/O process for more than half year in the No. 4 Wastewater Treatment Plant of Xi＇ an City was investigated. The results show that the treatment process has advantages of strong resistance to shock loading, good treatment effect and stable effluent quality. The average removal rates of COD, TN, NH3 -N, TP and SS are 90.5% , 67.18%, 86.43% , 54.8% and 95.8% respectively. In addition, the secondary settling tank sludge floating, low removal efficiency of TP and so on are analyzed, and relevant countermeasures are proposed to provide reference for optimized design and operation management of similar wastewater treatment plants.