垃圾填埋场渗滤液的人工湿地处理

Treatment of leachate from refuse landfill with constructed wetland

卫生填埋是垃圾处理的主要方式之一,填埋场产生的渗滤液对地下水和地表水会产生污染,因而需要进行有效的处理。介绍了垃圾渗滤液的人工湿地处理方法,包括人工湿地的组成、污染物去除机理、影响处理效率的因素等;对人工湿地处理渗滤液的工艺和国内外应用实例进行了总结;通过与传统处理方法相比,对其经济性进行了分析。可以看出,垃圾渗滤液的人工湿地处理法有成本低、构建和运行维护费用低、处理效果比较好等优点,在我国的某些地区有一定的适用性。

Sanitary landfill is one of refuse disposal methods, however, the leachate generated from landfill would pose adverse impacts on the environment,such as surface and underground water pollution, therefore, needs to be properly treated before discharge. Constructed wetland has proven to be one of effective methods for wastewater treatment such as leachate and is introduced in this paper, including wetland structures and types, pollutant removal mechanisms, and impact factors etc. In addition, the technology and application of wetland for treating leachate in China and other countries are also introduced, and the costs analyzed as compared with conventional leachate treatment methods. It can be seen that wetland has some advantages over conventional methods such as lower construction and operation costs, easier management and satisfying pollutant removal efficiency, it can be used in some areas where lands are easily available.