高级氧化技术在垃圾渗滤液处理中的应用

垃圾渗滤液是一种成分非常复杂的高浓度有机废水,生物法处理难以适应其水质的变化,文章介绍了光催化氧化、催化湿式氧化、Fenton氧化、电化学氧化及相应的催化氧化、化学氧化、等离子体技术、超声波技术等高级氧化技术的机理,总结了它们应用于垃圾渗滤液处理的影响因素和效果,高级氧化具有反应速度快、无二次污染、水质适用范围广、对垃圾渗滤液中有机污染物降解彻底等特点,但同时也受到水量和成本的限制,最后指出高级氧化技术之间的优化组合以及将其作为预处理单元与生化联合处理垃圾渗滤液应是今后的主要研究方向.

Application of Advanced Oxidation Processes In the Treatment of Landfill Leachate

Landfill leachate has very peculiar characters,proved to be toxic and recalcitrant.It is very difficult to make Landfill Leachate degraded only by biological treatment.The reaction mechanism and application in treating landfill leachate of advanced oxidation processes(AOP),such as photocatalytic oxidation,catalytic wet air oxidation,Fenton oxidation,electrochemical oxidation and catalytic oxidation,chemical oxidation,plasma technique and ultrasonic technology,are introduced.Rapid reaction,no secondary pollution,strong adaptability to Landfill Leachate and complete degradation of organic pollutant can be made by AOPs,but more extensive applications for AOPs are restricted by the cost and volume of landfill leachate.Finally the main points of research in the future are also discussed,which will focus on combination of advanced oxidation processes,or combination of advanced oxidation process and biological treatment.