Parametric sensitivity analysis of leachate transport simulations at landfills

Bou-Zeid, E. and El-Fadel, M. (2004) Parametric sensitivity analysis of leachate transport simulations at landfills. Waste Management, 24, (7), 681-689. (doi:10.1016/j.wasman.2004.03.004).


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This paper presents a case study in simulating leachate generation and transport at a 2000 ton/day landfill facility and assesses leachate migration away from the landfill in order to control associated environmental impacts, particularly on groundwater wells down gradient of the site. The site offers unique characteristics in that it is a former quarry converted to a landfill and is planned to have refuse depths that could reach 100 m, making it one of the deepest in the world. Leachate quantity and potential percolation into the subsurface are estimated using the Hydrologic Evaluation of Landfill Performance (HELP) model. A three-dimensional subsurface model (PORFLOW) was adopted to simulate ground water flow and contaminant transport away from the site. A comprehensive sensitivity analysis to leachate transport control parameters was also conducted. Sensitivity analysis suggests that changes in partition coefficient, source strength, aquifer hydraulic conductivity, and dispersivity have the most significant impact on model output indicating that these parameters should be carefully selected when similar modeling studies are performed.

Item Type: Article
ISSNs: 0956-053X (print)
Related URLs:
Subjects: T Technology > TD Environmental technology. Sanitary engineering
Divisions: University Structure - Pre August 2011 > School of Civil Engineering and the Environment
ePrint ID: 48137
Date Deposited: 30 Aug 2007
Last Modified: 27 Mar 2014 18:31

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