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US 6,283,676 B1Granted
Sequential aerobic/anaerobic solid waste landfill operation
AssigneeWaste Management, Inc.
InventorsGary R. Hater, Roger Green, Gerard Hamblin
Life of this patent
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Abstract
Landfills including multiple lifts having horizontal piping layers and methods for their use to accelerate anaerobic and/or aerobic degradation of municipal solid waste to increase landfill capacity.
Claims20
A method for biodegrading municipal solid waste comprising the steps of:
- a. creating a landfill bioreactor having a bottom surface;
- b. locating leachate withdrawal piping on the landfill bottom surface;
- c. placing a first lift of waste material on top of the leachate withdrawal piping to form a first lift having a first lift top surface;
- d. placing a first piping layer on the top surface of the first lift;
- e. placing a second lift of waste on top of the first piping layer form a second lift having a second lift top surface;
- f. placing a second piping layer on the top surface of the second lift;
- g. bringing the second lift to field moisture capacity;
- and
- h. directing air into the second lift using the first piping layer.
6 more elements
Dependencies are inferred from the claim text.