Combined Application of UV Photolysis and Ozonation with Biological Aerating Filter in Tertiary Wastewater Treatment

<table>Influence of O<sub>3</sub> dosage on COD removal in UV/O<sub>3</sub> oxidation (contact time 20 min, temperature 20°C, pH 7.2).</table>

International Journal of Photoenergy

Figure 4: Combined Application of UV Photolysis and Ozonation with Biological Aerating Filter in Tertiary Wastewater Treatment 