The environmental impact of the produced water on the upper aquifer in the Wahat region, Sirt Basin, Libya

Abstract

This paper based on data analysis by the Waha Oil Company of water samples collected from groundwater samples and produced water from Wahat region, Sirt Basin in Libya. This study provides a new pattern in the analysis of geochemical data which are in the form of a set of major ions and parameters such as acidity (pH), Total Solids Dissolved (TDS), total hardness of water (TH), the Residual Sodium Carbonate (RSC), Electrical Conductivity (EC), Magnesium Adsorption Ratio (MAR), the Kelly Ratio (KR), the permeability Index (PI), the Corrosivity Ratio (CR) and Total Organic Carbon (TOC). All that was performed using the statistical and analytical methods of data, and linking the results and information with each other will provide information on the sources of these elements and the water, also evaluate the water quality and suitability for drinking or irrigation. Based on the concentrations of the measure ions in the studied waters were ranged between desired range and the permissive range according to the World Health Organization. It appears that pH values of the groundwater are located within the safe range for drinking. To keep track of the suitability of the water for irrigation and drinking some of the important parameters and indicators used such as (RSC), (EC), (MAR), (KR), (PI), and (CR). Groundwater has been classified and showed that the water samples are classified as type (CaMgCl), while the produced water samples were classified as (NaCl).

This paper based on data analysis by the Waha Oil Company of water samples collected from groundwater samples and produced water from Wahat region, Sirt Basin in Libya. This study provides a new pattern in the analysis of geochemical data which are in the form of a set of major ions and parameters such as acidity (pH), Total Solids Dissolved (TDS), total hardness of water (TH), the Residual Sodium Carbonate (RSC), Electrical Conductivity (EC), Magnesium Adsorption Ratio (MAR), the Kelly Ratio (KR), the permeability Index (PI), the Corrosivity Ratio (CR) and Total Organic Carbon (TOC). All that was performed using the statistical and analytical methods of data, and linking the results and information with each other will provide information on the sources of these elements and the water, also evaluate the water quality and suitability for drinking or irrigation. Based on the concentrations of the measure ions in the studied waters were ranged between desired range and the permissive range according to the World Health Organization. It appears that pH values of the groundwater are located within the safe range for drinking. To keep track of the suitability of the water for irrigation and drinking some of the important parameters and indicators used such as (RSC), (EC), (MAR), (KR), (PI), and (CR). Groundwater has been classified and showed that the water samples are classified as type (CaMgCl), while the produced water samples were classified as (NaCl).