O-A-O曝气生物滤池对COD和NH_3-N的去除效果的试验研究

Study on the Performance of Removing COD and NH_3-N in the O-A-O Biological Aerated Filter

通过对升流式O—A—O二级曝气生物滤池去除COD和NH3-N的效果进行试验研究，在各个阶段对比中找出最优的运行工况，从而节约能源，降低运行成本。研究结果表明，在进水水力负荷为1-4m^3／m^2·h、有机负荷为4-13kg COD／（m^3·d）及气水比为1：1—4：1的工艺条件下，COD和NH3-N的去除率分别达到65％-81％和51％-74％。

In the paper, the O- A- O biological aerated filter was carried out to treat waste water in dynamic experiment. The COD and NH3 - N removal effect was investigated. And the superior working condition in each stage contrast was found out to lower energy consunption and the movement cost. The research results showed that the removal rate of COD was from 65 % to 81% and that of NH3 - N was from 51% to 74 % under the hydraulic loading of 1 - 4 m^3/m^2 ·h and the hydraulic loading of 4 - 13 kg COD/（ m^3 · d）with the air - water ratio being 1 ： 1 - 4 ： 1.