利用微气泡-电催化协同氧化技术对高浓度垃圾渗滤液进行降解研究,考察了电流密度、pH、微气泡通气量等工艺条件对处理高浓度垃圾渗滤液的影响,对比研究了单一使用微汽泡、双氧水、电催化及其双组合协同工艺方案去除COD和氨氮的效果,并采用Design Expert 8软件进行响应面优化协同氧化工艺。结果表明,响应面预测的最优工艺条件为:电流密度为 33.3 mA/cm²、通气量为8.5 L/min、渗滤液初始pH 8.5,在该条件下COD和氨氮的去除率分别为75.3%和97.1%,与预测值(COD为75.0%,氨氮去除率为95.4%)基本相符。

Microbubble-electrocatalytic synergic oxidation technology is employed to study the degradation of high concentration of landfill leachate.The influences of current density,pH,microbubble ventilation and other technological conditions on the treatment of high concentration of landfill leachate are investigated.The removal effects of COD and ammoniacal nitrogen by microbubble,hydrogen peroxide,electrocatalysis and their double combination synergic process respectively are compared and studied.The synergic co-oxidation process is optimized in response surface by using Design Expert 8 software.The optimal process conditions by response surface prediction are as follows:the current density is 33.3 mA·cm^-2,the ventilation is 8.5 L·min^-1,and the initial pH of the leachate is 8.5.Under these conditions,the removal rates of COD and ammoniacal nitrogen are 75.3% and 97.1%,respectively,which is basically consistent with the predicted values.

梁正义(1989-),男,硕士,工程师,从事环保治理与技术开发研究,597997713@qq.com。