反硝化处理硝氮废水的动力学研究

Study on the Kinetics of Treating Nitrate Wastewater by Denitrification Process

对反硝化法处理高浓度硝氮废水的动力学进行了研究 ,获得了最佳动力学条件。在温度为 30℃左右、pH为 7～ 8、MLSS为 3g/L左右 ,C/N为 0 .95～ 1.0、进水硝氮质量浓度为30 0mg/L、水力停留时间为 6～ 8h的条件下 ,出水NO-x N的质量浓度小于 2 0mg/L、COD小于 10 0mg/L。

The kinetics of denitrification treatment of high concentration nitrate wastewater was studied,obtaining the optimum kinetic conditions.Under the conditions of temperature about 30℃,pH7～8,sludge mass concentration 3 g/L,C/N ratio 0.95～1.0,influent nitrate mass concentration about 300 mg/L and hydraulic retention time 6～8 h,the effluent nitrate mass concentration is less than 20 mg/L,COD is less than 100 mg/L.