Abstract: A pilot scale ceramic bead biofilter(CBB)is investigated on the pretreatment of eutrophic reservoir water. Significant removals of COD_Mn, NH₃-N, NO₂^--N, Turbidity, total Algae, Manganese and THMFP were observed in the range of 19.3%～35%, 89%～96.5%, 97.5%～99%, 57.5%～69%, 60.1%～84.3%, 59%～84.6% and 10.4%～24.8%, respectively. The optimal operating conditions were recommended as hydraulic loading of 4～6m/h, air-to-water ratio at 0.75 and backwashing interval of 3～7d.

Key words: bio-ceramic filter, hydraulic loading, air-to-water ratio, backwashing interval

摘要： 针对受污染的水库水源水进行中试规模的生物陶粒滤池预处理实验研究。结果表明：生物陶粒滤池能有效地净化受污染水源水水质，对COD_Mn、NH₃-N、NO^-₂-N、浊度、藻类总数、锰、THMFP等的平均去除率范围分别为19.3%～35%、89%～96.5%、97.5%～99%、57.5%～69%、60.1%～84.3%、59%～84.6%、10.4%～24.8%。其适宜的工艺参数为：水力负荷(滤速)4～6m/h，气水比0.75∶1～1∶1；反冲洗周期3～7d。

关键词: 生物陶粒滤池, 水力负荷, 气水比, 反冲洗周期