5种反应介质对垃圾渗滤液污染地下水的治理效果研究

为了研究PRB技术修复垃圾渗滤液污染地下水的可能性，筛选最佳反应介质及其配比，为城市垃圾渗滤液污染地下水的治理提供参考，选择零价铁粉、膨润土、沸石、活性碳、炉渣5种反应介质，研究其对垃圾渗滤液污染地下水的治理效果。结果表明：5种反应介质单独作用下，活性炭对地下水中的COD去除效果最好，去除率达到76.0%，沸石对COD去除效果最差，去除率仅为45.0%，但沸石对地下水中NH₃的去除效果最好，去除率为70.8%，零价铁对NH₃的去除效果最差，去除率为42.3%；选择零价铁、活性炭、沸石3种介质按照不同配比继续试验，得出对COD的去除效果以零价铁：活性炭：沸石= 2:2:1的比例最好，其次是1:2:2和2:1:2，对NH₃的去除效果以零价铁：活性炭：沸石=1:2:2的比例最好，其次是2:1:2和2:2:1。

Research on Treatment on Groundwater Pollution by Landfill Leachate Using 5 Reaction Mediums

In order to research the possibility of repairation of groundwater polluted by landfill leachate by PRB, the author researched on treatment on groundwater polluted by landfill leachate using zero-valent iron, bentonite, zeolite, activated carbon and slag. The results showed that: treatment to COD with activated carbon was the best, which the removal rate reached to 76.0%. Treatment to COD with zeolite was the worst, which the removal rate was only 45.0%. However, treatment to NH3 with zeolite was the best, which the removal rate reached to 70.8%. Treatment to NH3 with zero-valent iron was the worst, which the removal rate was only 42.3%. Experiment continued with zero valent iron, activated carbon and zeolite in different proportioning. It concluded that treatment to COD with zero valent iron, activated carbon and zeolite in 2:2:1 was the best, and then was 1:2:2 and 2:1:2. Treatment to NH3 with zero valent iron, activated carbon and zeolite in 1:2:1 was the best, and then was 2:1:2 and 2:2:1.