Integrated electrical tomography and hydro-chemical analysis for environmental assessment of El-Dair waste disposal site, west of Sohag city, Egypt

Abstract

Geophysical prospecting is commonly used in solving environmental problems because of time saving, low cost, and nondestructive. The main objective of this study was to investigate the environmental impact assessment of groundwater contamination near El-Dair waste disposal site, west of Sohag city, Egypt to delineate a contaminant plume. The resistivity and self-potential (SP) methods can be helpful complement to geochemical measurements. The correlation between results of 2D electric resistivity tomography and SP method was applied and confirmed by hydro-chemical analysis of groundwater. The probable leachate plume is prolonged to out of disposal sites boundaries, and in general, those plumes have the same directions of the groundwater flow. Three profiles (3 km long) of two-dimensional resistivity tomography and 725 SP data points scattered within the area near and far the disposal site were implemented. Groundwater samples were collected from 13 tubewells at various locations for hydro-chemical analysis. Interpretations of resistivity tomography show a low resistivity zone (\7 X m), which appears to be a fully saturated zone with leachate from an open dumpsite. The results of SP show a large negative SP anomaly (-120 mV) with respect to a reference station taken outside the contaminant plume. SP method supported the results of resistivity method relating contaminated zones in the survey area. There is a good correlation between the geophysical investigations and the results of hydro-chemical analysis. The results of hydro-chemical analysis proved that there are concentrations of heavy metals within the groundwater which were percolated from wastewater disposal.

Archives of Mining Sciences

“…The results of the hydrochemical analysis showed the values of pH for almost samples ranged from 7.4 to 7.8 indicate slightly alkaline water (Abudeif, 2015). The TDS value of surface water samples, as well as samples of groundwater is very high.…”

Nutrients Removal From Partially Treated Wastewater Using Soil Aquifer Treatment System

“…This site is bounded by the cultivated floodplain from the east and the Eocene limestone plateau from the west [31]. The depth of the water table in the study area is nearly 25-30 m [32] and the flow direction is in the northeast direction [33]. The infiltration basin is located in El-Dair region west of Sohag city (Figure 1).…”

Detection of land degradation caused by historical Zn‐Pb mining using electrical resistivity tomography

“…Many authors have described the importance and impact of individual soil properties that is soil type, water content, porosity, electrical resistivity of fluids, mineralogy, cation exchange capacity, and particle size distribution on electrical conductivities (Brevik et al, 2006; Robinson & Friedman, 2005; Tabbagh & Cosenza, 2007; Yoon et al, 2002; Yoon & Park, 2001), in order to validate field studies (Caselle et al, 2019; Mainali et al, 2015; Sreedeep et al, 2005). All this research, however, has focused largely on the pollution of groundwater and surface watercourses with heavy metals (Abudeif, 2015; Hudson et al, 2018; Jarvis & Mayes, 2012; Pierwoła et al, 2020; Wynn, 2000) rather than on soil contamination. Such an approach has, moreover, been applied only rarely in industrial areas (Martin‐Crespo et al, 2011), especially with respect to studies of post‐metal mining wastes (Hudson et al, 2018; Mendecki et al, 2020; Warchulski et al, 2019).…”