垃圾渗滤液膜滤浓缩液处理技术综述与发展方向

Review of Concentration Liquid Treatment in Leachate Membrane Filtration and Development Direction

垃圾渗滤液膜过滤浓缩液是垃圾渗滤液在经MBR处理后再经过NF、RO膜被截留的难处理的残留液,具有有机物浓度高,盐分和重金属含量高,组成成分复杂和可生物降解性差等特点,处理极为困难。目前常用的处理方法有回灌处理,蒸发技术,混凝沉淀技术,膜蒸馏技术,高级氧化和湿式氧化技术等。本文结合实际工程应用情况对垃圾浓缩液的处理技术进行分析和探讨,综合各项技术的主要优、缺点,给垃圾渗滤液膜滤浓缩液处理技术的发展提供了参考方向。

Landfill leachate membrane filtration concentrate is the raffinate treated by Membrane Biological Reactor（MBR）,and then intercepted by reverse osmosis membrane or nanofiltration membrane.It is a difficult issue to deal with by its characteristics with the high concentrations of organic matter,salt and heavy metal,consist of multiple components and poor biodegradability.Recently,the significant progress has been obtained recirculation treatment,evaporation technique,coagulating sedimentation,membrane distillation,advanced oxidation and wet oxidation.The treatments of landfill leachate membrane filtration concentrate based on actual situation were analyzed and discussed,and advantages and disadvantages were synthesized,some lessons on the way forward for treatments of landfill leachate membrane filtration concentrate were offered.