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Landfill aeration within the scope of post-closure care and its completion
Publikationstyp
Journal Article
Date Issued
2013-03-07
Sprache
English
Author(s)
TORE-URI
Journal
Volume
33
Issue
10
Start Page
2074
End Page
2082
Citation
Waste Management 10 (33): 2074-2082 (2013)
Publisher DOI
Scopus ID
Publisher
Elsevier Science
The time frame required for post-closure care of Municipal Solid Waste (MSW) landfills is often assessed over several decades or centuries. One possibility to significantly shorten this period and, at the same time, improve the emission behavior exists with in situ aeration. Positive effects in connection with this method for biological stabilization have been investigated and published elsewhere. However, until today neither generally accepted monitoring guidelines nor completion criteria have been defined. With the paper on hand the authors propose a methodology for the assessment of both, total and remaining stabilization periods for aerated landfills. The central component of this methodology is a carbon balance. The latter is based on a detailed waste characterization in combination with online monitoring of the emissions (gas and leachate). The methodology is exemplarily demonstrated by means of data derived from a full scale project in Northern Germany. Here it could be shown that the predicted aeration period of approximately 6.4. years was sufficient to bio-stabilize the landfill. Furthermore, proposals for the completion of landfill aeration are presented. In this connection, carbon balance is of particular importance since the amount of biodegradable organic carbon mainly determines the emission potential. Additional parameters, aiming at a validation of the state of biological stabilization achieved during aeration are proposed and described.
Subjects
Aeration periods
Completion criteria
Landfill aeration
Post-closure care
Sustainable landfills
DDC Class
600: Technik
620: Ingenieurwissenschaften
710: Landschaftsgestaltung, Raumplanung