Efficient Treatment of Landfill Leachate Via Coagulation-Flocculation: Optimizing Process Conditions

Landfill leachate, a complex and highly polluted liquid, represents a major environmental challenge, requiring effective treatment methods. This study addresses the need for effective leachate treatment using a coagulation-flocculation approach. The research uses a response surface methodology to optimize key treatment factors, including pH, coagulant, flocculant, and agitation time. Optimal conditions were determined to be a pH of 6.87, a coagulant dose of 7.98 g/L, a flocculant dose of 12 ml/L, and an agitation time of 22.8 min. These conditions were obtained by mathematical modeling and were validated by experimental results. The study achieved remarkable removal percentages of 90.38% for turbidity, 85.50% for COD, and 55.53% for UV254, underlining the effectiveness of the optimized coagulation-flocculation treatment. The high R-squared values (0.97, 0.96, and 0.94 for turbidity, COD, and UV254, respectively) confirm the accuracy and reliability of the model. This research provides a sustainable solution for landfill leachate treatment. It illustrates the potential of response surface methodology in optimizing wastewater treatment processes. The results are expected to improve waste management practices and environmental preservation.