Journal of Research in Environmental Health

Journal of Research in Environmental Health

Investigating the Performance of Oily or Hydrocarbon-Smeared Wastewater Treatment Package in South Pars Gas Refinery

Document Type : Research article

Authors
Talieh Abdolkhani Nezhad 1
Ghofour Noriyan 1
Khosro Dehghan 2
Mohammadreza Qaisari 2
1 HSE Group, Kharad Institute of Higher Education, Bushehr, Iran
2 Master's Student, HSE Group, Kharad Institute of Higher Education, Bushehr, Iran.
10.22038/jreh.2026.27882
Abstract
Background and Objective: Gas refineries, as one of the largest industrial centers in the production of energy and chemical products, always face serious challenges in the management of their produced wastewater. These wastewaters, which contain chemical compounds, hydrocarbons, oils, and sometimes heavy metals, can pose significant threats to the environment and water resources. The purpose of this study is to analyze the performance of wastewater treatment packages and identify problems in the treatment processes, especially fluctuations in input quality, technical problems in equipment and lack of accurate online monitoring. 

Materials and Methods: In this study, performance data of wastewater treatment units of South Pars gas refineries were collected from internal reports and parameters such as COD, dissolved oil and H₂S were examined to evaluate the system efficiency. Oily wastewater was first treated in the API unit and then in the IGF with the help of chemicals such as Demulsifier. Acidic wastewater was also modified in neutralization tanks by adjusting pH and entered the next stages of treatment. 

Results: The results show that despite significant improvements in the performance of treatment packages, there are still problems such as input fluctuations and technical problems in the API and IGF systems, the improvement of which can help reduce pollution and improve the quality of treated water. This study effectively emphasizes improving the performance of treatment systems and compliance with environmental standards. 

Conclusion: The efficiency of the treatment system is affected by input fluctuations and technical problems, and equipment upgrades and online monitoring can significantly improve treatment performance.
 
Open Access Policy: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/
Keywords
Gas Refinery
Wastewater Treatment
Hydrocarbon
Oil
API Separator System
IGF Flotation
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