Treatment of Refined oil depot wastewater

Abstract

Abstract In the treatment of oily wastewater, the water quality and quantity must be clarified. First, the physical form and chemical composition must be clarified, and then the drug can be treated according to the characteristics of various pollutants. The current treatment of wastewater from refined oil storage tanks is still dominated by the old three sets (sedimentation, flocculation, and biological methods). The current application research is mainly an optimization of the old three sets, such as the application of hydrocyclones, the preparation of new coagulants, the use of efficient air flotation devices and efficient microorganisms. However, the difficulty of wastewater treatment of refined oil depots is COD(Chemical Oxygen Demand). Due to the characteristics of oily wastewater, there are some limitations in biological methods. At present, the advanced oxidation method is not mature and the treatment cost is high, which restricts the advanced oxidation method to treat oily wastewater. This paper describes the source of oil products, the generation of oil-bearing wastewater and various processes of oil-bearing wastewater treatment. Finally, some ideas of advanced oxidation technology to remove COD from oil-bearing wastewater are put forward.