Pump-and-treat configurations with vertical and horizontal wells to remediate an aquifer contaminated by hexavalent chromium

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dc.contributor.authorBortone, Imma
dc.contributor.authorErto, Alessandro
dc.contributor.authorDi Nardo, Armando
dc.contributor.authorSantonastaso, Giovanni F.
dc.contributor.authorChianese, Simeone
dc.contributor.authorMusmarra, Dino
dc.date.accessioned2020-10-07T16:06:47Z
dc.date.available2020-10-07T16:06:47Z
dc.date.issued2020-09-28
dc.description.abstractPump-and-treat technology is among the most used technologies for groundwater remediation. While conventional, vertical wells (VRWs) are well-known and used from long time, horizontal wells (HRWs) have been explored for remediation technologies only in last few decades. HRWs have shown to outperform vertical wells in terms of versatility, productivity and clean-up times under certain conditions. In this paper, the efficacy of an innovative pump-and-treat (P&T) configuration for groundwater remediation obtained by adopting either VRWs or HRWs technology is comparatively tested. A 3D transient finite element model of an unconfined aquifer containing a hexavalent chromium (Cr(VI)) contamination plume is considered to compare a single horizontal well configuration vs a range of spatially-optimised arrays containing vertical wells. A sensitivity analysis aimed at finding the best configuration to minimise the remediation time and the related cost is carried out by comparing different well diameters, D, pumping rates, Q, and position of wells. A comparative cost analysis demonstrates that, for the examined case-study, a single HRW achieves the clean-up goals in the same time span as for a greater number of vertical wells, but at higher price due to the excavation costs.en_UK
dc.identifier.citationBortone I, Erto A, Di Nardo A, et al., (2020) Pump-and-treat configurations with vertical and horizontal wells to remediate an aquifer contaminated by hexavalent chromium. Journal of Contaminant Hydrology, Volume 235, November 2020, Article number 103725en_UK
dc.identifier.issn0169-7722
dc.identifier.urihttps://doi.org/10.1016/j.jconhyd.2020.103725
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/15869
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectComputational fluid dynamic (CFD)en_UK
dc.subjectHexavalent chromiumen_UK
dc.subjectHorizontal wellsen_UK
dc.subjectGroundwater remediationen_UK
dc.subjectPump and treaten_UK
dc.titlePump-and-treat configurations with vertical and horizontal wells to remediate an aquifer contaminated by hexavalent chromiumen_UK
dc.typeArticleen_UK

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