Abstract:Taking a water purification plant in an industrial zone along the Yangtze River as an example, a variety of test schemes are proposed for the core advanced oxidation process by analyzing the current water quality issues and the target treatment requirements. The comparative result shows that the ozone-catalytic oxidation technology can significantly reduce the effluent concentration of chemical oxygen demand (COD). Therefore, the ozone-catalytic oxidation advanced treatment scheme is finally adopted for the upgrading of this plant. Based on the conclusion of the pilot-scale test, under the condition of hydraulic retention time of 60 min and catalyst filling ratio of 30%, an ideal treatment effect can be achieved with an ozone dosage of only 46 mg/L, and the removal rate of COD can reach over 48%. The relevant test parameters and conclusions can provide reference for the water quality improvement of similar projects.
