Treatability of Organic Constituents in the Paşaköy Wastewater Treatment Plant Effluent by O₃ and O₃/H₂O₂

Abstract

Effluent from the Paşaköy Wastewater Treatment Plant was oxidized by using O₃ and O₃/H₂O₂. DOC, COD, UV₂₅₄, total coliform, dissolved ozone and some endocrine disrupting compounds were monitored during oxidation. Results showed that O₃ provided superior disinfection, however, lower reductions in DOC, COD and endocrine disrupting compounds were exhibited compared to O₃/H₂O_2. The highest removal efficiency of DOC, COD and endocrine disrupting compounds were achieved at 0.5 molar ratio of O₃/H₂O_2. The benefit of H₂O₂ addition for advanced oxidation reduced significantly when the mole ratio was increased to 2. Therefore, the mole ratio of H₂O₂ to O₃ is a critical parameter for the design of wastewater oxidation by O₃/H₂O₂.

Keywords:

• Ozone
• Ozonation
• Disinfection
• Endocrine Disrupting Compounds
• Reuse
• Wastewater
• Paşaköy Wastewater Treatment Plant

Acknowledgment

This paper was presented at ARTE'09, First International Work-shop on the Application of Redox Technologies in the Environment, 14–15 September 2009, Istanbul (www.arte2009.itu.edu.tr)

This research was supported by Marmara University Scientific Research Fund (BAPKO) (Project no: FEN-A-030408-0079).