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LANDFILL MINING IN THE FRAMEWORK OF INTEGRATED WASTE MANAGEMENT: CASE STUDY OF AN ITALIAN LANDFILL

  • Paula Tan - Department of Civil, Environmental and Architectural Engineering, University of Padova, Italy
  • Roberto Raga - Department of Civil, Environmental and Architectural Engineering, University of Padova, Italy
  • Enrico Villani - Ecoambiente srl, Italy
  • Walter Giacetti - Ecoambiente srl, Italy

DOI 10.31025/2611-4135/2024.19403

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Copyright: © 2024 CISA Publisher

Abstract

A remediation project involving landfill mining (LFM) was designed and is ongoing at the 40-year-old Villadose landfill in Rovigo, Italy. The original natural clay lining the bottom of the old landfill is being recovered and used as technical material. Meanwhile newly constructed landfill sectors, designed to contained more than four times more waste than previously are being filled with both excavated waste and fresh municipal solid waste. A laboratory scale experiment was conducted to simulate the expected landfill conditions and analyse the effects of different waste fractions on emissions. The fresh municipal waste although pretreated at a mechanical biological treatment plant shows a significant residual emission potential, in terms of TOC, and NH4. A landfill housing such quality of waste would not be expected to have achieved final storage quality by the end of its aftercare life. The joint disposal of this waste fraction and the substantially degraded excavated waste may contribute to shortening this timeline. This paper reports the landfill mining operation, an assessment of the emissions from the landfill simulation reactors and the implications for the expected landfill behaviour.

Keywords

Editorial History

  • Received: 12 Apr 2024
  • Revised: 15 Jul 2024
  • Accepted: 26 Jul 2024
  • Available online: 02 Sep 2024

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