◊ Air Sparging
◊ Bioreactor Landfills ◊ Bioremediation of Chlorinated Solvents ◊ Bioventing and Biosparging ◊ Electrokinetics: Electric Current Technologies ◊ Fracturing ◊ Ground-Water Circulating Wells ◊ In Situ Flushing ◊ In Situ Oxidation ◊ Multi-Phase Extraction ◊ Natural Attenuation ◊ Permeable Reactive Barriers ◊ Phytoremediation ◊ Remediation Optimization ◊ Soil Vapor Extraction ◊ Soil Washing ◊ Solvent Extraction ◊ Thermal Treatment: Ex Situ ◊ Thermal Treatment: In Situ Overview A bioreactor landfill operates to rapidly transform and degrade organic waste. The increase in waste degradation and stabilization is accomplished through the addition of liquid and air to enhance microbial processes. This bioreactor concept differs from the traditional "dry tomb" municipal landfill approach. A bioreactor landfill is not just a single design and will correspond to the operational process invoked. There are three different general types of bioreactor landfill configurations:
The Solid Waste Association of North America (SWANA) has defined a bioreactor landfill as "any permitted Subtitle D landfill or landfill cell where liquid or air is injected in a controlled fashion into the waste mass in order to accelerate or enhance biostabilization of the waste." The U.S. EPA is currently collecting information on the advantages and disadvantages of bioreactor landfills through case studies of existing landfills and additional data so that EPA can identify specific bioreactor standards or recommend operating parameters. More information is available at the Office of Solid Waste (OSW) Bioreactors web site.
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