活性炭和沸石组合吸附渗滤液中CODcr和氨氮的试验研究

摘要

经过Fenton试剂氧化处理后的垃圾渗滤液用于吸附处理试验，试验分别得到活性炭和沸石的最佳反应pH值和反应时间后，将活性炭和沸石组合吸附渗滤液，4种吸附处理方式去除垃圾渗滤液中CODcr的能力为：活性炭-沸石〉沸石-活性炭〉活性炭〉活性炭／沸石；去除垃圾渗滤液中NH3-N的能力为：活性炭／沸石〉活性炭-沸石〉沸石〉沸石一活性炭。根据对比分析，确定了最佳吸附工艺应为活性炭-沸石组合工艺，该工艺对CODcr和NH3-N的去除率分别达到74．11％和80．86％。%Landfill leachate was treated by adsorbent after Fenton oxidation process. The best pH value and reaction time of activated carbon and zeolite were obtained. Then activated carbon and zeolite were used as adsorbent. According to the comparison of four kinds of adsorption manners,the order of adsorption ability for CODr was as follows：activated carbon - zeolite 〉 zeolite - activated carbon 〉 activated carbon 〉 activated - carbon/zeolite. The order of adsorption ability for NH3 - N was as follows ： ac- tivated carbon/zeolite 〉 activated carbon - zeolite 〉 zeolite 〉 zeolite - activated carbon. According to the contrast analysis, the op- timum process was activated carbon - zeolite integrated process. The removal rate of COD, and NH3 - N respectively were 74. 11% and 80. 86%.