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A data completion method for identifying pollution intrusion in aquifers.

Lamia Guellouz¹, Faten Khayat²

¹LMHE-ENIT-Université Tunis El Manar, BP 37, 1002, Tunis Le Belvédère, Tunisia. lamia.guellouz@enit.utm.tn.

Scientific Reports

|September 28, 2022

Summary

This study presents a data completion method to map polluted water intrusion in aquifers, even with missing boundary data. The approach successfully identifies contaminant flow and concentration across the entire domain.

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Area of Science:

Hydrogeology
Environmental Engineering
Computational Fluid Dynamics

Background:

Aquifer contamination poses risks to water resources.
Accurate monitoring of water flow and solute transport is crucial for environmental management.
Identifying the extent of polluted water intrusion is a key challenge in groundwater management.

Purpose of the Study:

To develop and validate a data completion method for identifying polluted water intrusion in aquifers.
To address challenges posed by missing boundary data in hydrogeological modeling.
To determine groundwater flow, water head, and pollutant concentrations within an aquifer domain.

Main Methods:

A data completion method is employed, integrating water flow and solute transport modeling.
The method utilizes over-specified data on known boundaries to compensate for missing information.
The approach is applied to aquifer configurations, including those with pumping wells.

Main Results:

The developed method successfully identifies the extent of polluted water intrusion from the downstream boundary.
Accurate determination of flows, water heads, and pollutant concentrations throughout the aquifer domain was achieved.
Satisfactory results were obtained across various aquifer configurations, demonstrating model effectiveness.

Conclusions:

The data completion method is effective in detecting and mapping polluted water intrusion in aquifers.
The model's ability to handle incomplete boundary data makes it suitable for real-world applications.
This approach provides a valuable tool for groundwater contamination assessment and management.