Ozonation Treatment of Simulated Wastewater Containing Characteristic Pollutants from the Petrochemical Industry

This study investigated key factors in the petrochemical industry and evaluated the oxidation performance of ozonation catalytic oxidation for treating phenol-simulated wastewater and actual wastewater spiked with phenol. In simulated phenol wastewater, optimal conditions (ozone dosage of 8 mg/L/min, pH 11, total dissolved solids (TDSs) of 1000 mg/L, and initial phenol concentration of 50 mg/L) yielded a maximum chemical oxygen demand (COD) removal rate of 90.60%. For actual wastewater spiked with phenol under the same conditions, maximum removal rates of phenol, COD, and total organic carbon (TOC) were 65.45%, 63.57%, and 79.65%, respectively. The degradation mechanisms and changes in organic matter during ozonation were analyzed using three-dimensional fluorescence spectroscopy, ultraviolet spectroscopy, and gas chromatography–mass spectrometry (GC-MS). The findings demonstrate that ozonation oxidation is an effective wastewater treatment method, significantly reducing pollutant concentrations and enhancing water quality.