垃圾渗滤液回灌处理若干参数控制

水力负荷、有机负荷、回灌次数3个参数对垃圾渗滤液回灌处理效果有重要影响，通过在国内某城市垃圾卫生填埋场建立实验装置，进行回灌实验。研究了在不同水力负荷、有机负荷、回灌次数下，回灌处理对渗滤液COD的去除情况．结果表明，水力负荷是回灌处理最重要的影响因素，随着水力负荷的增大，浓缩液回灌对COD的去除率降低．水力负荷为30mL／（L·d）～200mL／（L·d）时，回灌对COD的去除率为70%-94％：但有机负荷对回灌处理的影响相对较小，一天的回灌次数以3～4次为宜；回灌渗滤液的C／N对NH3-N的去除有较大影响，但回灌有机负荷和回灌次数对C／N对NH3-N的去除率影响不大．

The Parameters Control for Recirculation Treatment of Leachate

The three parameters, hydraulic loading rate, organic loading rate and recirculation times have important influence on the efficiency of recirculation treatment, the recirculation experiment research removal of COD under different hydraulic loading rate, organic loading rate and recirculation times by.the experimental devices built in landfill in a civil city. The result indicated, that the hydraulic loading rate is the major influence parameter for leachate recireulation. When hydraulic loading rate was 30 mL/（L.d）-200 mL/（L.d）, COD removal efficiency was 70%-94% ： Hewer, organic loading rate has comparative minor influence on recirculation treatment, the apt recirculation times are 3 or 4 in a day ： C/N of recirculation leachate have important influence on NH3-N removal rate, but hydraulic loading rate and recireulation times haven＇t.