Oil/water separators are in-line devices used to remove oils and greases from industrial waste streams and storm water discharges. They operate by employing various physical or chemical separation methods, including gravity separation, filters, coagulation/flocculation, and flotation. The use of any separation process depends on the properties of the oil in the oil/water mixture. Oil/water separators are commonly used on air force installations as a method to separate oils from a variety of wastewater discharges. The effluent from oil/water separator is typically discharged to either a sanitary sewer system or a storm sewer. These separators are typically installed in industrial and maintenance areas and receive oily wastewater generated during processes such as aircraft & vehicle maintenance and washing.