Conclusion Refinery wastewater treatment requires a practical approach that considers the source of the wastewater, contaminants, flow conditions and final water-quality requirements. Technologies such as API separators, CPI separators, DAF and nutshell filtration can address different stages of refinery wastewater treatment. When appropriately combined, these technologies can support oil removal, suspended-solids reduction and further water treatment. For refineries looking to improve water management, the starting point is understanding the wastewater and defining the treatment objective. From there, an appropriate treatment train can be developed around the facility's operational requirements. As the Oil & Gas industry continues to explore water recycling, reuse and resource efficiency, modern refinery wastewater treatment will remain an important part of effective water management.
