选用生物陶粒为滤料,考察了水力负荷、回流比、温度对上向流曝气生物滤池(UBAF)反硝化性能的影响.结果表明:UBAF的脱氮效果随着水力负荷的增大而降低,当水力负荷小于2.0 m3/(m2·h)时,对NH3-N、TN均能达到较好的去除效果,去除率分别为88.26％和72.22％;回流比对NH3-N去除效果的影响较小,对TN的去除影响较大,控制回流比为1 50％～200％,出水TN平均质量浓度小于13.8 mg/L;温度对TN去除效果的影响较大,当水温在大于20℃时,TN的平均去除率可达78％,出水TN平均质量浓度为10.8 mg/L.%With biological ceramsite as the filter media, the effects of hydraulic loading, reflux ratio and temperature on the denitrification performance of up-flow biological aerated filter (UBAF) were investigated. The results showed that: the denitrification capability of the UBAF decreased with the increase of hydraulic loading, the removal rates of NH3-N and TN reached 88.26% and 72.22% respectively when the hydraulic loading was lower than 2.0 m3/(m2·h); the reflux ratio had little influence on NH3-N removal but great influence on TN removal, when the reflux ratio was controlled at the range of 150% to 200%, the average mass concentration of TN in the effluent water was lower than 13.8 mg/L; the remval rate of TN was greatly affected by temperature, when the water temperature was higher than 20 ℃, the average mass concentration of TN in the effluent water was 10.8 mg/L with the average removal rate of 78%.
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