Delineation of the proper locations for wastewater disposal in arid regions using TEM and ERT techniques: A case study at Rubiki industrial zone, Badr City, Egypt
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Full Text |
Pdf
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Author |
Usama Massoud, Mohamed Attwa, Abeer El-Kenawy and Mohamed Mosa
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e-ISSN |
1819-6608 |
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On Pages
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2515-2524
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Volume No. |
18
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Issue No. |
22
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Issue Date |
January 30, 2024
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DOI |
https://doi.org/10.59018/1123303
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Keywords |
waterlogging, desert lands, land-use/land-cover (LU/LC), ERT, TEM.
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Abstract
Proper wastewater disposal is crucial for the sustainable development of rapidly growing megacities worldwide.
The emergence of waterlogging near evaporation ponds (EVP) and in desert areas surrounding these cities poses a
significant environmental threat. This study employs an integrated approach, combining transient electromagnetic (TEM)
and 2D-electrical resistivity tomography (2D-ERT) methods with remote sensing techniques, to understand wastewater
flow patterns around EVPs and identify suitable disposal sites. The research focuses on a complex subsurface structure in
the Cairo-Suez district, characterized by extensive surface waterlogging. Initial monitoring relies on satellite imagery and
land use-land cover maps. TEM provides an overview of subsurface layer distribution, while 2D-ERT offers detailed
insights into near-surface flow paths. To address the limitations of geoelectrical methods in locating conductive layers,
advanced inversion techniques (AIS) are applied. The findings reveal a four-layer subsurface composition, with
waterlogging primarily attributed to the argillaceous limestone layer interbedded with shale. This layer is shallower in the
eastern and northwest areas, correlating with higher instances of waterlogging. Moving northward, the argillaceous
limestone layer deepens, and the upper clastic layer thickens, resulting in reduced waterlogging. The study underscores the
influence of subsurface structure on near-surface layer distribution. Based on these findings, optimal wastewater disposal
sites are recommended, with a focus on the northern region where the argillaceous limestone layer is deeper and the upper
clastic layer is thicker. To mitigate waterlogging, the installation of disposal wells is highly advised, leveraging the insights
derived from this research. This study offers a versatile and reproducible approach suitable for both pre-project planning
and post-project phases in desert regions.
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