You are here:
IN SITU BIOREMEDIATION IN A LANDFILL: LEACHATE CHEMICAL AND MICROBIAL PARAMETERS
Citation:
Grosser, R. J., B. J. Morris, R. B. Green, G. R. Hater, D A. Carson*, AND W J. DavisHoover*. IN SITU BIOREMEDIATION IN A LANDFILL: LEACHATE CHEMICAL AND MICROBIAL PARAMETERS. Presented at 8th Bioremediation Symposium, Baltimore, MD, June 06 - 09, 2005.
Impact/Purpose:
To inform the public.
Description:
In recent years the conversion of landfills to landfill bioreactors has received increased attention owing to potential economic and waste treatment benefits. The U.S. EPA has entered into a Cooperative Research and Development Agreement (CRADA), with Waste Management Inc., testing two bioreactor operations at the Outer Loop Landfill in Louisville, KY. A facultative landfill bioreactor (FLB) is operated by collecting and treating leachate to achieve nitrification, followed by recirculating leachate through landfill cells. An aerobic/anaerobic landfill bioreactor (AALB) configuration is also being tested by initially aerating the solid waste placed in the cells followed by liquid addition. Leachate samples were collected quarterly from duplicate cells operated as FLB and AALB, as well as two control cells conventionally treated. Leachate samples were analyzed for elemental/chemical concentrations and numbers of different functional groups of bacteria. The effects of the two different bioreactor configurations compared to controls for chemical concentrations and bacterial numbers are discussed.