Low cost Fenton process applied as additional stage in leachate treatment

H.D. TRAID; F.A. SCHMIDT; M.L. VERA; G. ESCALADA; A.N. DWOJAK; C.G. SILVA; M.I. LITTER

Conferencia; 6th Iberoamerican Conference on Advanced Oxidation Technologies CIPOA,; 2024

The variability and heterogeneity of the leachates produced in landfills have led to the application of AOPs as complementary stages to achieve an adequate treatment. In this presentation, a Fenton process was evaluated for application in the treatment of a real leachate. The influence of common variables such as pH, temperature, or reagent ratios is relatively well known. However, the main limitation for an extensive application of this technology is the treatment cost. In the Fenton process, about an 80% of the treatment costs can be attributed to reagents (Fe2+ and H2O2), whereby a compromise between the reagent concentration and the pollutant degradation must be taken into account. In the present work, a very low concentration of reagents and low cost operational conditions were used, achieving a significant decrease in COD and a high efficiency, with promissory results.