scholarly journals Recharge and Lateral Groundwater Flow Boundary Conditions for the Saturated Zone Site-Scale Flow and Transport Model

2001 ◽  
Author(s):  
B. Arnold ◽  
T. Corbet
Keyword(s):  
Boundary Conditions ◽  
Groundwater Flow ◽  
Transport Model ◽  
Saturated Zone ◽  
Flow And Transport ◽  
Flow Boundary

scholarly journals Actual and Predictive Transport Modeling of Fluoride Contamination of the Sfax-Agareb Coastal Aquifer in the Mediterranean Basin

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Samira Melki ◽  
Amina Mabrouk El Asmi ◽  
Mohamadou Ould Baba Sy ◽  
Moncef Gueddari
Keyword(s):  
Transport Model ◽  
Flow Direction ◽  
Effective Porosity ◽  
Transport Modeling ◽  
Saturated Zone ◽  
Flow And Transport ◽  
Fluoride Contamination ◽  
Model Flow ◽  
Liquid Discharge ◽  
High Concentrations

The Tunisian coast is suffering from several active or abandoned polluted sites, suspected to have released high concentrations of various contaminants infiltrating the environment and probably causing groundwater degradation. Within this scope, this study comes to assess and model the Sfax-Agareb aquifer contamination by fluoride released through phosphogypsum leachate percolation. For that, a spatial-temporal monitoring of fluoride contents was achieved for the period between October 2013 and October 2014. Observed data show that hazardous water contamination is occurring especially close to the phosphogypsum leachate collection basins. At this level, groundwater fluoride concentrations may reach up to 29 mg/L. Flow and transport modeling to evaluate fluoride contamination plume expansion in 2030 was achieved using MODFLOW and MT3DMS software packages based on a homogeneous and isotropic aquifer conceptual model. Flow and transport model calibrations were assessed by varying hydraulic conductivity, effective porosity, and dispersivity and then validated through observed data for two reference dates (October 2013 and October 2014). Based on the Tunisian NT 106-002 liquid discharge norms, fluoride contamination front was set at 3 mg/L. Numerical simulation shows that, in 2014, plume contamination by fluoride in the saturated zone extended over 250 m from the contamination source. In 2030, the spatial extent of this contamination will extend over a distance of 900 m towards the sea, following the aquifer flow direction. At the control piezometer, fluoride concentrations will increase from 29 mg/L in 2014 to 86 mg/L in 2030. This study, using numerical modeling, gives new insights for short- and medium-term prediction of eventual fluoride concentrations in the saturated zone of the Sfax-Agareb aquifer.

scholarly journals Uncertainty Analysis Framework - Hanford Site-Wide Groundwater Flow and Transport Model

2001 ◽  
Author(s):  
Charles R. Cole ◽  
Marcel P. Bergeron ◽  
Christopher J. Murray ◽  
Paul D. Thorne ◽  
Signe K. Wurstner ◽  
...  
Keyword(s):  
Uncertainty Analysis ◽  
Groundwater Flow ◽  
Transport Model ◽  
Analysis Framework ◽  
Hanford Site ◽  
Flow And Transport ◽  
Groundwater Flow And Transport
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