Oil and grease found especially in wastewater pose a serious threat to aquatic life. Oil and grease on the water surface reduce dissolved oxygen levels and prevent the water surface from coming into contact with air. The oil and grease layer that adheres to water and suspended solids decreases biological activity, thereby reducing the level of dissolved oxygen in the water. As oxygen levels decrease, the oxidation of hydrocarbon molecules slows down. Over time, oil and grease in water can accumulate on pipe walls, causing blockages in the line.
In wastewater, oil and grease are typically removed using DAF (Dissolved Air Flotation) systems along with a scraper, but this method has low efficiency. For this reason, oil and grease molecules that adhere to organic and inorganic pollutants in the water should be coagulated with suitable chemicals and floated. This way, they can be easily separated from the water with a scraper.