【摘要】 以球形陶粒为曝气生物滤池的生物载体 ,进行城市污水处理的半工业试验 ,考察了滤速、气水比、冲击负荷、反冲洗等因素对曝气生物滤池工作性能的影响。结果表明 :在装置规模为 1 2 m3/ d,水温为 ( 2 0～ 2 3.5)℃ ,滤速为 ( 6.0 9～ 8.2 1 ) m/ h,碳化柱和硝化柱气水比分别为 1∶ 1和 2∶ 1 ,进水 COD为 ( 1 2 0～ 338) mg/ L ,NH+ 4 -N为 ( 30 .0～ 53.6) mg/ L的条件下 ,出水达到生活杂用水的标准 ;冲击负荷和反冲洗对滤池出水水质没有显著的影响。更多还原

【Abstract】 The pilot test in which municipal sewage is treated by biological aerated filter (BAF) with burned clay pellets as microorganism carriers is carried out with scale of 12m~3 /d .The effects of filtration velocity, gas-to-sewage ratio, overloading and backwashing on the performance of BAF are investigated. The results show: (1) under the conditions of sewage temperature range of (20～23.5)℃,filtration velocity range of (6.09～8.21)m/h,gas-to-sewage ratio of 1∶1 for biocarbone aerated filter and 2∶1 for bio-nitrification filter,the effluent of BAF reach the water standards for miscellaneous use in living from COD (120～338)mg/L and NH~+ 4-N(30.0～53.6)mg/L of influent of BAF ;(2) overloading and backwashing have no remarkable effects on the quality of effluent.更多还原