Landfill leachate treatment by the combination of physico-chemical and electrochemical methods.

Leachate originating in landfills, where industrial solid wastes are disposed of, is a complex wastewater that could exert high environmental impact. In this paper, treatment of landfill leachate, particularly removal of chemical oxygen demand (COD) through adsorption, chemical oxidation (KMnO4), electrocoagulation and electrochemical oxidation processes was studied. The combined processes, viz.

Kinetics of electrooxidation of landfill leachate in a three-dimensional carbon bed electrochemical reactor.

The electrooxidation of high strength leachate from an industrial solid waste landfill site was carried out in a three-dimensional carbon bed electrode reactor (TDR). This paper discusses the kinetics and mechanism of electrooxidation on the basis of time course variation of COD, TOC and TKN (total Kjeldahl nitrogen) from the raw leachate. The batch experiments were run at different applied currents (1-3 A) for a period of 6h.