二氧化钛（TiO2）/氧化石墨烯复合催化氧化垃圾渗滤液

Landfill leachate catalyzed and oxidized by titanium dioxide （TiO2）/graphene oxide composite

本文通过比较二氧化钛(TiO2)、氧化石墨烯和TiO2/氧化石墨烯复合等3种催化剂处理垃圾渗滤液的效果,分析了它们的效果与投加量、反应时间之间的关系.试验结果表明,当投加TiO2/氧化石墨烯复合催化剂与渗滤液COD质量比为0.7、反应时间为2h时,处理条件最佳、催化剂对渗滤液COD的去除率为92.57%,处理后的渗滤液氨氮浓度为2016mg/L,可生化性BOD5/COD为0.83.综上,在这3种催化剂中TiO2/氧化石墨烯复合催化剂处理垃圾渗滤液的效果最好.

Compared the effects of the 3 catalysts,titanium dioxide(TiO 2),graphene oxide and TiO2/graphene oxide composite,on treatment of landfill leachate,the relationship between their effects,the amount of catalyst and the catalytic reaction time was analyzed.The test results show that when the ratio of the added mass of TiO2/graphene oxide composite catalyst to the mass of COD in leachate is 0.7 and the catalytic reaction time is 2 h,the treatment condition is optimal,and the removal rate of COD in leachate by catalyst is 92.57 %,and the ammonia nitrogen concentration of the treated leachate is 2016 mg/L,and the biodegradability BOD 5/COD is 0.83.Above all,the effect of TiO2/graphene oxide composite catalyst on the treatment of landfill leachate is the best among these 3 catalysts.