JIANG Bao-jun,LIU Zhuo-yi,GUO Hao-cheng,et al.Combined Oxidation Efficiency of Landfill Leachate by TiO2, Cu2O and Graphene Oxide[J].China Water & Wastewater,2021,37(5):86-90.
TiO2、Cu2O和氧化石墨烯复合氧化垃圾渗滤液效能
- Title:
- Combined Oxidation Efficiency of Landfill Leachate by TiO2, Cu2O and Graphene Oxide
- Keywords:
- landfill leachate; TiO2; Cu2O; graphene oxide; catalytic oxidation
- 摘要:
- 针对垃圾渗滤液中成分复杂的污染物，在自然光照条件下，使用TiO2/氧化石墨烯、Cu2O/氧化石墨烯和TiO2/Cu2O三种复合催化剂分别对垃圾渗滤液原液进行催化氧化。结果表明，3种复合催化剂中，TiO2/氧化石墨烯复合催化剂对有机物的去除效果最好，当催化剂与渗滤液COD的质量比为0.7时为该催化剂的最佳投加量，最佳反应时间为2 h。在最佳试验条件下，对垃圾渗滤液原液进行催化氧化后，对COD的去除率达到92.57%，此时渗滤液出水COD为964.79 mg/L，出水NH4+-N为2 015.84 mg/L，BOD5/COD值达到0.83。
- Abstract:
- In view of the complex composition of pollutants in landfill leachate, three composite catalysts including TiO2/graphene oxide (GO), Cu2O/GO and TiO2/Cu2O were used for catalytic oxidation of raw landfill leachate under natural light conditions. Among the three kinds of composite catalysts, the TiO2/GO composite catalyst had the best treatment effect on organic matters in landfill leachate. The optimum dosage of catalyst was obtained when mass ratio of catalyst and leachate COD was 0.7, and the best reaction time was 2 h. Under the optimum experimental conditions, the removal efficiency of COD reached 92.57% after catalytic oxidation of the raw landfill leachate. At this time, concentrations of COD and NH4+-N in the effluent were 964.79 mg/L and 2 015.84 mg/L, and the BOD5/COD value reached 0.83.
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