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Gas Pressure Model for Layered Municipal Solid Waste Landfills

Li, Yu-Chao, Cleall, Peter John ORCID:, Ma, Xiao-Fei, Zhan, Tony L. T. and Chen, Yun-Min 2012. Gas Pressure Model for Layered Municipal Solid Waste Landfills. Journal of Environmental Engineering 138 (7) , pp. 752-760. 10.1061/(ASCE)EE.1943-7870.0000533

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A mathematical model for calculating gas pressure profiles in layered landfill systems is presented. Solutions to scenarios considering a zero-pressure top boundary condition and a zero gas flux or fixed gas pressure bottom boundary condition are presented. Two cases, specified gas pressure and specified inward gas flux, are addressed for scenarios involving horizontal gas collection systems. A series of application examples demonstrate how the proposed model can be used to investigate the influences of (1) variation of gas generation rate with respect to depth and time, (2) soil covers, (3) horizontal collection layers, and (4) geomembrane and geosynthetic clay liner covers on gas pressure distribution in landfills. The proposed model provides a useful tool to landfill engineers in designing landfill gas management systems and in particular when selecting and specifying gas collection system spacing and pumps.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TD Environmental technology. Sanitary engineering
Uncontrolled Keywords: Analytical techniques, Landfill, Gas, Pressure
Additional Information: Pdf uploaded in accordance with publisher's policy at (accessed 25/02/2014)/ Recieved takedown request from publisher 11/05/2015.
Publisher: ASCE
ISSN: 0733-9372
Last Modified: 19 Oct 2022 10:41

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