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Leachate composition |
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University of Padua IMAGE Department |
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Factors affecting leachate composition v Waste composition v pH v Redox potential v Landfill age v Design and management of the landfill |
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Mechanisms regulating the mass transfer from wastes to leaching water: |
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• Hydrolysis of solid waste and biological degradation • Solubilization of soluble salts contained in the waste • Dragging of particulate matter |
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Leachate and gas composition versus time |
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Phase I: Aerobic phase Phase II: Acid phase Phase III: Intermediate methanogenic phase Phase IV: Stabilized methanogenic phase Phase V: Final aerobic phase |
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(Christensen & Kjeldsen, 1989) |
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Constituents in leachate |
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(Ehrig, 1990) |