The treatment of a mature landfill leachate, from a municipal landfill located in northern Spain (Cantabria),
by an integrated system [Fenton reaction−neutralization−ultrafiltration (UF)] was carried out in a pilot plant
that operated either in batch and continuous mode. The initial average chemical oxygen demand (COD)
concentration of the leachate was 2100 mg/L, with a biological oxygen demand (BOD5)/COD ratio of 0.08.
The sequence of stages implemented was (i) Fenton oxidation, (ii) neutralization of Fenton's effluent to pH
7, and (iii) ultrafiltration with submerged membranes. The influence of different parameters, such as redox
potential evolution, H2O2/COD mass ratio, and hydraulic retention time, was investigated in the Fenton oxidation
process. The effect of neutralization and UF steps was also studied. COD reduction after the integrated treatment
was up to 80%. The final effluent was free of solids, color, and iron. The results demonstrated the high
potential of Fenton's reagent in combination with membrane filtration in the remediation of recalcitrant
wastewaters on a pilot plant continuously operated.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.