垃圾渗滤液高级氧化及其组合工艺深度处理研究进展

垃圾渗滤液经过常规的生化处理后难以达到国家的排放标准,高级氧化技术作为深度处理工艺之一日益成为处理的重要方法。目前,垃圾渗滤液深度处理的高级氧化技术主要有臭氧氧化法、电催化氧化法、光催化氧化法、Fenton氧化法、过硫酸盐氧化法、超声氧化法等几种方法。系统阐述了这些高级氧化法的机理以及国内外研究者们的研究成果,比较了各高级氧化技术的优缺点,并对这些技术的研究方向做了展望。最后,介绍了高级氧化技术之间的一些优化组合工艺在垃圾渗滤液深度处理中的研究成果,这些工艺互相协同,在技术和经济上是切实可行的,有望成为垃圾渗滤液深度处理技术工程化的发展方向之一。

Research Progress of Advanced Oxidation Processes and Its Combined Processes for Advanced Treatment of Landfill Leachate

Landfill leachate is difficult to reach national emission standards after conventional biochemical treatment,and the advanced oxidation processes are becoming more and more important in advanced treatment of landfill leachate.At present,ozone oxidation,electrocatalytic oxidation,photocatalytic oxidation,Fenton oxidation,persulfate oxidation and ultrasonic oxidation are the main advanced oxidation processes for advanced treatment of landfill leachate.The mechanisms of those advanced oxidation processes and the research results of researchers at home and abroad are reviewed systematically.Besides,the advantages and disadvantages of advanced oxidation processes are compared,and the research directions of those processes are prospected.Finally,the research results of advanced oxidation processes combined other processes in the advanced treatment of landfill leachate are introduced.These processes are synergistic,which is feasible in technology and economic,and are expected to become one of the development directions for the advanced treatment of landfill leachate technology.