Induced gas flotation (IGF) cleanses water by eliminating suspended particles such as oils and sediments. suspended matter is removed by induced gas floatation by injecting gas bubbles into the wastewater. This is done in a flotation tank or basin. The suspended matter begins to float as the small bubbles adhere to it, this makes it easy to remove them by a skimming device. This method is most commonly used to treat wastewater effluents from petrochemical plants, oil refineries, chemical plants, natural gas processing plants and other industries releasing similar wastewater effluents.