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Advanced Oxidation Processes (hereinafter  as “AOP”) utilize special carrier to adsorb and capture micropollutants in sewage. Meanwhile, the special components and oxidant (ozone and chlorine dioxide) produce large amounts of highly active free radicals (-OH). The refractory organic pollutants in the water will become small molecule substances of low or no toxicity through addition, substitution, electron transfer and chemical bond breaking, or even directly degraded into CO₂ and H₂O.