Journal of Environmental Hydrology

	Journal of Environmental Hydrology ISSN 1058-3912
	Electronic Journal of the International Association for Environmental Hydrology JEH Volume 19 (2011), Paper 20 Posted September 30, 2011 MODELING BIOREMEDIATON AT ABANDONED WASTE DUMPING AND LANDFILL SITE USING MODFLOW AND RT3D PACKAGES *Noori M. Cata Saady* Civil and Environmental Engineering Department, University of Windsor, Windsor, Ontario, Canada *ABSTRACT* This paper presents modeling of bioremediation of groundwater at an abandoned waste dumping and landfill site using MODFLOW and RT3D packages with Groundwater Modeling System (GMS) software interface. The objectives of the model were to predict the progress of bioremediation, contaminant concentrations and distribution over an assumed duration to get an idea about the cleanup time. The paper describes: (1) the problem at the site under consideration; (2) formulation of the model; (3) the conceptual model development and the assumptions involved; and (4) the results of MODFLOW and RT3D simulations. The models showed that bioremediation will be an effective treatment for groundwater contamination at the site, but it will need a relatively long time that extends to years. Two years of bioremediation would remove 3.5% of a typical aqueous phase organic contaminant. Heterogeneity of the geological formations decreased the degradation of the organic contaminant and resulted in a pool (unreachable confined zones) of high concentrations (98.5% of the original level) that remained after treatment in almost 20% of the area. Reference: Saady, N.M.C. 2011. Modeling bioremediaton at abandoned waste dumping and landfill site using MODFLOW and RT3D packages. Journal of Environmental Hydrology, Vol. 19, Paper 20. CONTACT: Noori M. Cata Saady Department of Civil and Environmental Engineering University of Windsor Essex Hall - 205G 401 Sunset Ave. Windsor, ON, N9B 3P4 Canada E-mail: Email: saady@uwindsor.ca
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