强化脱氮地下渗滤系统处理生活污水的研究

通过在渗滤沟底部填充一层铁炭混合物而改造成的强化脱氮地下渗滤系统。结果表明，强化脱氮地下渗滤系统对生活污水具有良好的处理效果，在水力负荷为2cm／d情况下，对COD的去除率在92％以上，对TP的去除率在99％CA上，对TN的去除率达到了80％。因此把铁炭等化学脱氮法结合到地下渗滤系统中，能大大提高地下渗滤系统的脱氮效果，为解决地下渗滤系统脱氮效果差的问题提供了新的思路及途径。

Study on Sewage Treatment by Enhanced Denitrogenation Subsurface Infiltration System

A new enhanced denitrogenation subsurface infiltration system was built by filling with a layer of iron-carbon mixture at the bottom of the infiltration ditch.The results showed that enhanced denitrogenation subsurface infiltration system could reach better effluent quality.The averaged removal rates of COD,TP and TN were 92%,99%,and 80% respectively when the hydraulic load was 2 cm/d.Chemical-denitrogenation method,such as iron-carbon method combined with subsurface infiltration system,could greatly improve the effect of denitrogenation,which provided a new way to improve the denitrogenation effect of the subsurface infiltration system.