采用集成膜技术对城市垃圾渗沥液进行处理,探讨了预处理方法、膜组件、操作压力等因素对渗沥液处理效果的影响。经混凝沉淀和管式膜超滤等预处理的渗沥液经过二级纳滤处理,质量分数为85%—90%转化为符合国家一级排放标准的透过液,可直接无害排放;仅10%—15%成浓缩污液,可返回垃圾池或经脱水干燥后焚烧。The hybrid technology of flocculent sedimentation2tubular UF2NF2NF was app lied to treat city landfill
leachate. The influence of different operating conditions, such as p retreatment method, membrane modules and
operating p ressure, on landfill leachate treatmentwas investigated. After thismembrane treatment, around 85% —
90% of permeate solution was comp lied to China national ClassA discharge standard. Only around 10% —15% of
the permeate solution remained as the concentrated leachate, which may return to landfill pond or be incinerated
after dehydration.福建省科技项目(98-Z-33);建设部科技项目建科([1998]210号);福建省青年科技人才创新项目(2001J056)
