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Bioremediation of Leachate in the Landfill Drainage System

ABSTRACT The paper describes a laboratory experiment on the biological activity of bacterial populations derived from landfill waste and established on granular materials under conditions similar to those in landfill drainage systems. A laboratory column has been used to model that system. Artificially formulated leachate has been recycled through the column and the composition of the leachate, the gas produced and its content have been analysed. The results have shown that bacteria derived from landfill waste and established once on landfill drainage aggregate have the ability to survive at low levels of activity and rapidly revive after the addition of nutrients. These results are of great significance when the potential use of landfill drainage systems for bioremediation of leachate is concerned.