Poster (Scientific congresses and symposiums)
Quantification and monitoring of contaminant mass fluxes in heterogeneous subsurface media
Jamin, Pierre; Brouyère, Serge
2011In-situ Environemental Monitoring and Policy, The Application of Sensors and Passive Samplers
 

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Keywords :
Groundwater Pollution; Contaminant flux; Tracer technique; Passive sampling; Contaminated site
Abstract :
[en] Since the beginning of the years 2000, a consensus has been growing among the scientific, technical and decision makers community concerning the fact that the characterisation and the management of contaminated sites have to be performed in terms of contaminant flux metrics instead of to be based on a simplistic study of pollutant concentration coming from piezometers randomly spread over the site. Contaminant plumes and associated pollutant mass fluxes are extremely variable in space as well as in time. The scientific and technical challenge is to capture this double heterogeneity in order to consider it explicitly or statistically for the management of a contamination issue. This requires (1) the interception of the entire contaminated groundwater flowing section with a control panel; (2) the ability to measure and to calculate accurately groundwater and contaminant fluxes across that panel; and (3) the repetition of the measurement to bring out the spatial and the temporal variation of contaminant fluxes. This research project aims to develop an integrated pollutant flux measurement approach for contaminated groundwater at the scale of the contaminant plume. This approach lays on a triple integration of (1) single well tracing techniques – (2) passive sampling – (3) control panel. Spatial and temporal variability of groundwater fluxes will be quantified by the point dilution tracing method derived from the “FVPDM” technique (Brouyère et al. 2008). In the same time, the amount of pollutant flowing through the same location will be determined by the adequate passive sampling technique (PS). The integration of these two measures in an interpretation schema based on mathematical and numerical modelling will allow quantifying contaminant fluxes and their variability over time. The adaptation at the scale of the contaminant plume will be based on a logging-type use of techniques, repeated along the vertical axis of the monitoring wells and repeated from one well to an other of a control panel implanted to intercept the plume. All the research results and developed techniques will then be integrated into a complete measurement system (PS-FVPDM), mobile and easily usable on field. The whole development and testing will take place on several pilot contaminated test site located in various hydrogeological context.
Disciplines :
Geological, petroleum & mining engineering
Author, co-author :
Jamin, Pierre ;  Université de Liège - ULiège > Département Argenco : Secteur GEO3 > Hydrogéologie & Géologie de l'environnement
Brouyère, Serge  ;  Université de Liège - ULiège > Département Argenco : Secteur GEO3 > Hydrogéologie & Géologie de l'environnement
Language :
English
Title :
Quantification and monitoring of contaminant mass fluxes in heterogeneous subsurface media
Alternative titles :
[fr] Quantification et monitoring des flux de contaminants en milieu souterrain hétérogène
Publication date :
26 May 2011
Number of pages :
A0
Event name :
In-situ Environemental Monitoring and Policy, The Application of Sensors and Passive Samplers
Event organizer :
VITO - Vlaamse instelling voor technologisch onderzoek
Event place :
Gand, Belgium
Event date :
du 26 mai 2011 au 27 mai 2011
Audience :
International
Available on ORBi :
since 07 May 2013

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