With significantly improved removing rates of COD, phenol and NH_3-N and the activated slurry from two-stage biochemical process revamped from single-stage combined aeration tank, the property of active sludge will not be changed. 改造原单级合建式曝气池为两级生化流程后,活性污泥的性能不发生变化,对COD、酚、XH3一N的去除率都有明显提高。
The two-stage bioreactor or direct inoculation of microfauna into the aeration tank can attain the goal. 应用两段式生物反应器或者直接向曝气池中投加微型动物均可达到此目的。