STUDY ON THE TREATMENT OF PETROLEUM WASTEWATER WITH ADVANCED OXIDATION PROCESS

Because petroleum wastewater contains some organic substances that are difficult to biodegrade, the biological treatment of effluent is generally difficult to meet the discharge requirements, and advanced treatment is required. Advanced oxidation method is one of the main methods to remove refractory organic matter in sewage, so it has been widely used in water treatment. This paper takes petroleum wastewater as a research object, uses supercritical water oxidation to treat petroleum wastewater, and studies its degradation reaction characteristics, providing guidance for petroleum wastewater treatment. The main operating conditions in the treatment of petroleum wastewater by supercritical water oxidation process were investigated, such as the reaction pressure, reaction temperature, residence time, oxidation coefficient, etc. on the treatment effect of petroleum wastewater. Under sufficient oxidant addition conditions, the supercritical water oxidation process has good treatment effect and obtained the best reaction conditions: reaction temperature 450 degrees C, reaction pressure 24 MPa, oxidation coefficient 0.9, residence time 9 min.