気泡内プラズマ/オゾン併用方式の促進酸化処理

抄録

This study proposes an advanced oxidation process to rapidly decompose organic compounds in treatment water. In existing advanced oxidation processes, two •OHs, used as oxidizing agents, are often consumed to produce H₂O₂ without decomposing organic compounds. Our proposed process uses a combined ozone/plasma system with plasma in bubbles. The combined ozone/plasma system uses the O₃ and H₂O₂ reaction to produce •OH. Nondimensional simulation implied that the decomposing rate would be maximized by equalizing the increasing rates of the dissolved O₃ and H₂O₂ concentration. Organic compounds in waste water B, with a total organic carbon (TOC) concentration of 1180 mg/L, were almost completely eliminated in 480 minutes via the combined ozone/plasma treatment. The decomposition rate was 1.46×10^-1 g_TOC/L/h and the decomposition efficiency was 2.85×10^-1 g_TOC/kWh. However, the decomposition and efficiency rates are expected to increase by improving the utilization rate of O₃ and optimizing plasma conditions.