两级曝气生物滤池启动过程研究

Study on start-up processes of two-stage biological aerated filter

曝气生物滤池是在普通生物滤池的基础上开发的污水处理新工艺。研究了两级曝气生物滤池处理生活污水时各级的启动状况,考察了出水中主要污染物和生物滤池内生物量随时间的变化情况。结果表明,氧化有机物的碳化曝气生物滤池的启动速度要远快于氧化氨氮的硝化曝气生物滤池。鉴于这两部分在启动期间表现出来的不同特性,在处理生活污水的时候,为了获得更快的同步启动速度,这两级曝气生物滤池应分别启动,并重点针对硝化滤池增加强化措施。

BAF （Biological Aerated Filter） is a new technology developed from the base of the common biological filter. The status of the two-stage BAF changes with time flies during the start-up, which is studied in order to help to accelerate the start-up. Also, the concentration of the main contaminations and the biomass in the BAF are carefully examined. The result shows that the BAF whose function is removing organic contamination starts quicker than the BAF whose function is removing ammonium nitrogen. Moreover, the former BAF has a distinguished effect in the very beginning of the start-up. According to the different characters of the two kinds of BAF, the removal of organic contamination and the removal of ammonium nitrogen should be separated in different BAFs in order to accelerate the start-up.