Treatment of contaminated wastewater

The environmental impacts of petroleum are often negative because they are toxic to almost all lifestyles, and there is a possibility of causing climate change. Oil pollution in the air and in the water can be toxic and dangerous to the human body. Preliminary researchers have thoroughly studied and discussed the methods of treatment of oily wastewater. Removing oily wastewater from the oil without damaging the environment is an important problem for the oil industry. The three-phase solid, water, and oil blends can be separated from each other when a continuous oil–water separator system is used. Oil contaminated wastewater is generally treated by gravity sedimentation, coagulation, flotation, coagulation composite flotation, demulsification, membrane separation, flocculation treatment, chemical precipitation, and biological treatment and filtration.