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Biodegradation of Dichloromethane in Leachate

by R. Kerry Rowe, (M.ASCE),
Leila Hrapovic,
Naim Kosaric,
D. Roy Cullimore,



Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water

Abstract:

The biodegradation of dichioromethane (DCM) in landfill leachate is examined by means of a series of laboratory tests conducted in a controlled environment. These tests demonstrate that degradation of DCM can occur under anaerobic conditions in leachate with half-lives at 24?C and 10?C of the order of 0.5?1.9 days and 2.8?4.7 days respectively following a lag time of 6?9 days and 50-95 days respectively. The paper then discusses a number of field cases where dichioromethane has been observed to experience a significant decrease in concentration in landfill leachate that is attributed to biodegradation with an inferred half-life of 2?5 years.

Subject Headings: Leachates | Biological processes | Landfills | Laboratory tests | Organic compounds | Methane | Leaching

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