Comparison and Evaluation of Different Leachate Treatment Processes forChemical Oxygen Demand and Color Removals - Statistical Assessment

摘要

The performance of seven oxidation treatments on stabilized landfill leachate namely; O 3 , Fen-ton, Fenton followed by O 3 , persulfate, persulfate followed by O 3 , simultaneous O 3 /Fenton, andsimultaneous O 3 /persulfate were evaluated and compared. The study aims to assess the variationbetween all the seven oxidation treatments with regards to COD and color removal. The analysisof variance (ANOVA) and Tukey’s test showed that there were significant differences between theperformances of the treatments. The O 3 treatment removed the lowest COD and color while thesimultaneous O 3 /Fenton, Fenton followed by O 3 , simultaneous O 3 /persulfate and persulfate fol-lowed by O 3 removed the highest. Hence, these treatments are recommended to remove organicsfrom stabilized landfill leachate.