Waste settlement as well as consolidation phenomena, which occur inside a landfill for municipal solid waste (MSW), can cause a decrease in waste permeability. This can lead to a reduction in conveyance of the leachate drainage system. It is therefore possible that a so-called perched leachate zone will form. Such a zone is constituted by an area in the body of the landfill where the leachate is temporarily trapped and is unable to infiltrate downward. This phenomenon is influenced by many factors, which include rain infiltration rate, waste moisture and composition, landfill height, and so on. The main aim of the paper is to elucidate the role played by landfill height in the formation of perched leachate zones using a one-dimensional (1D) mathematical model. The model allows for the simulation of the perco- lation fluxes throughout an MSW landfill based on mass-balance equations. The results showed a different response in terms of flow rates throughout the landfill, highlighting the important role of landfill height in the formation of perched leachate zones. Landfill height influences not only the formation of perched leachate zones but also their extension throughout the body of the landfill.

Di Trapani, D., Di Bella, G., Mannina, G., Nicosia, S., & Viviani, G. (2015). Influence of the Height of Municipal Solid Waste Landfill on the Formation of Perched Leachate Zones. JOURNAL OF ENVIRONMENTAL ENGINEERING, 1(1), 1-7 [doi.org/10.1061/(ASCE)EE.1943-7870.0000950].

Influence of the Height of Municipal Solid Waste Landfill on the Formation of Perched Leachate Zones

DI TRAPANI, Daniele;MANNINA, Giorgio
;
NICOSIA, Salvatore;VIVIANI, Gaspare
2015

Abstract

Waste settlement as well as consolidation phenomena, which occur inside a landfill for municipal solid waste (MSW), can cause a decrease in waste permeability. This can lead to a reduction in conveyance of the leachate drainage system. It is therefore possible that a so-called perched leachate zone will form. Such a zone is constituted by an area in the body of the landfill where the leachate is temporarily trapped and is unable to infiltrate downward. This phenomenon is influenced by many factors, which include rain infiltration rate, waste moisture and composition, landfill height, and so on. The main aim of the paper is to elucidate the role played by landfill height in the formation of perched leachate zones using a one-dimensional (1D) mathematical model. The model allows for the simulation of the perco- lation fluxes throughout an MSW landfill based on mass-balance equations. The results showed a different response in terms of flow rates throughout the landfill, highlighting the important role of landfill height in the formation of perched leachate zones. Landfill height influences not only the formation of perched leachate zones but also their extension throughout the body of the landfill.
Settore ICAR/03 - Ingegneria Sanitaria-Ambientale
http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29EE.1943-7870.0000950
Di Trapani, D., Di Bella, G., Mannina, G., Nicosia, S., & Viviani, G. (2015). Influence of the Height of Municipal Solid Waste Landfill on the Formation of Perched Leachate Zones. JOURNAL OF ENVIRONMENTAL ENGINEERING, 1(1), 1-7 [doi.org/10.1061/(ASCE)EE.1943-7870.0000950].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/150578
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