Degradation of organic matter from wastewater using advanced primary treatment by O3 and O3/UV in a pilot plant

Publication date: Available online 23 January 2016 Source:Physics and Chemistry of the Earth, Parts A/B/C Author(s): Yaneth Bustos-Terrones, Jesús Gabriel Rangel-Peraza, Antonio Sanhouse, Erick R. Bandala, Luis G. Torres The oxidation of organic matter from wastewater using ozone, ultraviolet radiation and ozone/UV oxidation was evaluated in a pilot plant, applying a continuous effluent arising from the Autonomous Metropolitan University wastewater treatment plant. The oxidation was measured as the efficiency to remove organic load, measured as chemical oxygen demand. The use of ozone and UV was evaluated separately and in combination through a continuous process. Three different ozone doses (0.6 to 1.2 mg O3/L) and three different UV radiation fluencies (6.7 to 20.12 mJ/cm2) were assessed. A synergistic effect of the combined process ozone/UV was demonstrated, and a maximal chemical oxygen demand reduction was achieved both processes. Due to residence times used (less than 1 min), 36% of chemical oxygen demand reduction was obtained when ozone treatment was evaluate separately and only 9% using ultraviolet radiation.

Source: Physics and Chemistry of the Earth, Parts ABC - January 24, 2016 Category: Science Source Type: research