摘要
利用上向流曝气生物滤池(UBAF)对微污染水预处理进行研究。研究表明:UBAF对微污染水的预处理有良好的效果;在水力停留时间为30min,气水比为1∶1,水温在20～30℃条件下,当进水氨氮为5.5～12mg/L时,UBAF对氨氮的去除率为80%～85%;对亚硝酸盐氮的去除率为80%左右;当进水CODMn的浓度为4.5～13.5mg/L时,UBAF对CODMn的去除率达到40%;提高流速,将水力停留时间由30min降至20min时,UBAF对氨氮的去除率由87.7%降至79.5%。
The study on pretreatment micro-polluted water by Up-flow Biologieal Aerated Filter. The results show as fol- lows：UBAF has better treatment effects of micro-polluted water.As the concentration of NH4＋-N in flow is 5.5-12mg/L, the average removal rate of NH4＋-N is 80%-85%, the average removal rate of NO4＋-N is 80% at the HRT of 30min,air/Water ratio of 1：1 ,water temperate of 20-30℃.As the concentration of CODMn in flow is 4.5-13.Smg/L,the average removal rate of CODMn is 40% ;As the HRT decreased from 30min to 20min,the removal rate of NH4＋-N decreased from 87.7% to 79.5%.
出处
《水科学与工程技术》
2010年第1期31-33,共3页
Water Sciences and Engineering Technology
基金
国家水体污染控制与治理科技重大专项(2008ZX07422-003)
关键词
微污染
预处理
曝气生物滤池
氨氮
micro-polluted
pretreatment
Biological Aerated Filter
NH4＋-N
