中文摘要：

在相同运行条件下，对比了倒置A2／O和UCT工艺氮磷脱除效能。结果表明，在进水水质相同时，2个工艺对COD都有较好的处理效果；UCT工艺对TN和PO43-p的去除效率比倒置A2／O工艺分别高出8．1％±3．31％和6．75％±2.78％；从能量消耗的角度看，UCT工艺虽然增加回流系统，但是对氧气需求量更少，污泥产量小，节省了碳源和电能的消耗，更具整体优势。

英文摘要：

The comparison of nitrogen and phosphorus removal between the inverted A2/O process and the UCT process was performed under the optimal operating conditions. The results showed that the two processes had a good performance on the COD removal. The removal rates of TN and PO43-P by the UCT process were better than that by the inverted A2/O process, and the value was 8.1%±3.31% and 6.75%±2.78%, respectively. From the analysis of economic and technical aspects, the UCT process had overall advantages. The UCT process added the reflux system with little oxygen demand and a small sludge production. Meanwhile, it saved carbon and energy consumption.