上流式曝气生物滤池两种填料启动挂膜的试验研究

在相同运行条件下，对瓷粒和陶粒2种不同填料曝气生物滤池（BAF）的启动运行进行了实验研究，考察了不同填料在挂膜过程中CODCr和NH4^＋-N的去除效果及出水NO2^--N和NO3^--N质量浓度的变化。结果表明，在常温下（20～25℃）2种填料的所需的启动时间差异较大，陶粒填料所需时间为17d，而瓷粒填料别需37d。启动挂膜过程中，两者对CODCr和NH4^＋-N可达到基本相同的去除率，但所需运行时间差异较大，陶粒BAF较之瓷粒BAF稳定，且硝化效果好于瓷粒BAF．

Experimental Studies on Cultivation and Start-up Methods of Two Kinds of UBAF Biofilm

The laboratory-scale study was can＇ied out on the start-up and biofilm cultivation performance of two biological aerated filters （BAF） with ceramsite and porcelain carriers at the same operational conditions, and the CODCr and NH4^＋-N removal rate and NO2^--N and NO3^--N concentration in effluent of both BAFs were monitored during operation. The results showed that the time needed for start-up of both ceramsite and porcelain particle carriers were different, for the ceramsite particle carrier 17 days needed but for porcelain particle carrier 37 days needed at ambient temperature （20-25 ℃）. The two BAFs could reach the nearly same CODCr and NH4^＋-N removal efficiencies but different operational time was needed, It was also found that the BAF with ceramsite particle as biofilm carrier was much steadier and could reach a much better nitrification than the case in the BAF with porcelain particles.