| Authors | Abdorreza Vaezihir- Mohammad Ranjdoust- Ali Kadkhodaei- Alireza Gholmohammadi |
|---|---|
| Journal | Human and Environment |
| Paper Type | Full Paper |
| Published At | ۲۰۲۲-۱۲-۰۶ |
| Journal Grade | Scientific - research |
| Journal Type | Typographic |
| Journal Country | Iran, Islamic Republic Of |
Abstract
Pollution of surface water by hydrocarbon compounds released from the refineries, storage tanks and convay pipline is very possible and need to be addressed with high sensitivity. Purpose of this study is investigation of contamination and hydrochemical properties of runoff waters at Shazand refinery. Water samples collected and analysed for major ions and oil and metal contaminants. Twoelve samples were collected from surface waters of the refinery and were analyzed for oil materials, some heavy metals, nutrients and major ions. Some other parameters like EC and pH were meseared in situe. According to the results, the runoff in some parts of the refinery shows contamination by benzene. Ethylbenzene concentration, however, is less than maximum permissible level and no evidence of MTBE and toluene was detected. Pollution by benzene can be due to pollutants released from the refining process and spilling of oil. Apart of BTEX pollutants in surface water can be came from atmospheric washout during precipitation. No evidents of MTBE detected in the samples. It should be mentioned that BTEX and MTBE are volatile components and cannot be survived in surface water for a long time. Chemical parameters suchas EC and ions concentaration in the surface water in the central area of the refinery shows an anomaly which would be related to the industrial activites. The runoff of this part of the refinery is less suitable for industrial and agricultural usges.