摘要
采用UBAF组合工艺处理低浓度氨氮废水,考察了气水比、水力负荷、有机负荷、填料高度等工艺参数对氨氮去除效果的影响。结果表明,当进水氨氮浓度在2.07～22.9mg·L-1之间时,氨氮平均去除率可达45.1%。确定最佳工艺参数如下:气水比为2∶1,进水流量为0.6L·h-1,水力负荷为0.31m3·m-2·h-1,填料高度为60cm,进水CODCr浓度低于40mg·L-1。
A upflow biological aerated filter combination process was deslgnect for aavancea treatment of NH4^＋-N with low concentration,and the influence of parameters,such as ratio of gas to water,hydraulic loading,organic loading,filler height,on the removal rate of NH4^＋-N were investigated. It was showed that,when the influent concentration of NH4^＋-N was 2.07 - 22.9 mg · L^-1, the average removal rate of NH4^＋-N was 45.1 %. The optimum treating conditions were as follows： the ratio of gas to water was 2 ： 1, the influent water flow was 0.6 L · h^-1 ,the hydraulic loading was 0.31 m^3 · m^-2 · h^-1 ,the filler height was 60 cm,and the of influent water CODCr concentration of influent water was less than 40 mg · L^-1.
出处
《化学与生物工程》
CAS
2009年第9期76-78,共3页
Chemistry & Bioengineering
