沸石吸附法去除垃圾渗滤液中氨氮的研究

Ammonia Nitrogen Removal from Refuse Landfill Leachate by Zeolite Adsorption Process

为了既有效地解决渗滤液中高浓度NH3-N的问题又降低渗滤液处理的成本 ,探讨了沸石吸附法去除垃圾渗滤液中NH3-N的效果及可行性。小试研究结果表明 :每克沸石具有吸附 15 5mgNH3-N的极限潜力 ,当沸石粒径为 30～ 16目时 ,氨氮去除率达到了 78 5 % ,且在吸附时间、投加量及沸石粒径相同的情况下 ,进水氨氮浓度越大 ,吸附速率越大 ,沸石作为吸附剂去除渗滤液中的氨氮是可行的。

Facing the problem of high ammonia nitrogen contained refuse landfill leachate treatment and to reduce the cost of this treatment, a laboratory bench scale study of zeolite adsorption process was explored for the feasibility and efficiency. By the experiment it was found that a NH 3-N removal of 78% was obtained under conditions of zeolite granule size of 30～16 orders and that the potential adsorption capacity was 15 5 mg NH 3-N per gram of zeolite. In case of the same adsorption time, zeolite size and leachate flux, higher inflow NH 3-N concentration is, higher adsorption speed is obtained. It is believed that as adsorption agent for NH 3-N removal from refuse landfill leachate, zeolite could be feasible.