Produced water quality assessment of Missa Keswal oil field, Gujar Khan, Pakistan (P-0825) (MFN 6338)

Abstract

Research was conducted to analyze the physiochemical parameters (pH, conductivity, TDS, hardness, chloride, fluoride, heavy metals) of produced water of Missa Keswal (Gujar khan, Punjab, Pakistan) oil field and their impacts on surrounding soil and water. Produced water samples were collected from 5 settling tanks. Soil samples were also collected from the study area inside the oil field and also from the surrounding area of oil field. Soil samples were taken at distances about 0-15cm depth to analyze the impacts of produced water on surrounding soils. According to Pak-EPA standards pH of produced water lies within the defined limits and Cl was present in much higher amount than the permissible limits defined by Pak- EPA. Results of heavy metals were compared with Pak-EPA which showed that arsenic and manganese are within the permissible limit. High level of chromium observed in produced water tank 3 i.e. 1.26 mg/L. From the present study it is determined that produced water showed highly contamination of pollutants so it should be treated before releasing into the surrounding environment in order to avoid the impacts.