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IN SITU BIOREMEDIATION IN A LANDFILL: HOLDING TIME STUDY OF 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: HOLDING TIME STUDY OF LEACHATE CHEMICAL AND MICROBIAL PARAMETERS. Presented at 8th Bioremediation Symposium, Baltimore, MD, June 06 - 09, 2005.
Impact/Purpose:
To inform the public.
Description:
Processing and analyzing solid waste samples from large and costly sampling events in a timely manner is often difficult. As part of a Cooperative Research and Development Agreement (CRADA), the U.S. EPA and Waste Management Inc. (WMI) are investigating the conversion of landfills to landfill bioreactors due to the potential economic and waste treatment benefits. As part of this agreement, WMI is testing two bioreactor operations at the Outer Loop Landfill in Louisville, KY. One bioreactor (facultative) is operated by collecting and treating leachate to achieve nitrification, followed by recirculation of treated leachate through landfill cells. The second configuration (aerobic/anaerobic) is also being tested by initially aerating the waste placed in the cells followed by liquid addition. A study was done to compare the processing and analyzing of solid waste samples within 24 hours of a sampling event to holding waste samples under refrigerated conditions for up to 42 days. Discussion of biological activity and microbiological/chemical characterization of solid waste samples under these conditions is discussed.