Achieving “Final Storage Quality” of municipal solid waste in pilot scale bioreactor landfills

Entombed waste in current sanitary landfills will generate biogas and leachate when physical barriers fail in the future, allowing the intrusion of moisture into the waste mass contradicting the precepts of the sustainability concept. Bioreactor landfills are suggested as a sustainable option to ach...

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Bibliographic Details
Published in:Waste management (Elmsford) 2009, Vol.29 (1), p.78-85
Main Authors: Valencia, R., van der Zon, W., Woelders, H., Lubberding, H.J., Gijzen, H.J.
Format: Article
Language:English
Subjects:
Air Pollutants - chemistry
Applied sciences
Bioreactors
Carbon Dioxide - chemistry
Cities
Conservation of Natural Resources
Environmental Monitoring
Exact sciences and technology
General treatment and storage processes
Methane - chemistry
Other wastes and particular components of wastes
Pilot Projects
Pollution
Refuse Disposal - methods
Time Factors
Urban and domestic wastes
Wastes
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Summary:Entombed waste in current sanitary landfills will generate biogas and leachate when physical barriers fail in the future, allowing the intrusion of moisture into the waste mass contradicting the precepts of the sustainability concept. Bioreactor landfills are suggested as a sustainable option to achieve Final Storage Quality (FSQ) status of waste residues; however, it is not clear what characteristics the residues should have in order to stop operation and after-care monitoring schemes. An experiment was conducted to determine the feasibility to achieve FSQ status (Waste Acceptance Criteria of the European Landfill Directive) of residues in a pilot scale bioreactor landfill. The results of the leaching test were very encouraging due to their proximity to achieve the proposed stringent FSQ criterion after 2 years of operation. Furthermore, residues have the same characteristics of alternative waste stabilisation parameters (low BMP, BOD/COD ratio, VS content, SO 4 2 - / Cl - ratio) established by other researchers. Mass balances showed that the bioreactor landfill simulator was capable of practically achieving biological stabilisation after 2 years of operation, while releasing approximately 45% of the total available (organic and inorganic) carbon and nitrogen into the liquid and gas phases.
ISSN:0956-053X
1879-2456
DOI:10.1016/j.wasman.2008.02.008