title: Pilot-scale treatment of olive oil mill wastewater by physicochemical and advanced oxidation processes.
abstract: The pilot-scale treatability of olive oil mill wastewater (OOMW) by physicochemical methods, ultrafiltration and advanced oxidation processes (AOPs) was investigated. Physicochemical methods (acid cracking, oil separation and coagulation-flocculation) showed high efficiency of chemical oxygen demand (COD) (85%), oil and grease (O&G) (> 97%), suspended solids (SS) (> 99%) and phenol (92%) removal from the OOMW. Ultrafiltration followed by physicochemical methods is effective in reducing the SS, O&G. The final permeate quality is found to be excellent with over 90% improvements in the COD and phenol parameters. AOPs (ozonation at a high pH, O3/UV, H2O2/UV, and O3/H2O2/UV) increased the removal efficiency and the O3/H2O2/UV combination among other AOPs studied in this paper was found to give the best results (> 99% removal for COD, > 99% removal for phenol and > 99% removal for total organic carbon). Pilot-scale treatment plant has been continuously operated on site for three years (3 months olive oil production campaign period of each year). The capital and operating costs of the applied treatment alternatives were also determined at the end of these seasons. The results obtained in this study have been patented for 7 years by the Turkish Patent Institute.
authors.affiliation: Department of Environmental Engineering, Uludag University, Bursa, Turkey. myalili@uludag.edu.tr
authors.forename: M Yalili
authors.initials: MY
authors.lastname: Kiliç
authors.forename: T
authors.initials: T
authors.lastname: Yonar
authors.forename: K
authors.initials: K
authors.lastname: Kestioğlu
mesh_terms: D057919:Biological Oxygen Demand Analysis; D003365:Costs and Cost Analysis; D005374:Filtration; D005427:Flocculation; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste / Q000032:analysis*; D000069463:Olive Oil; D010084:Oxidation-Reduction; D010865:Pilot Projects; D010938:Plant Oils / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000032:analysis / Q000737:chemistry*
chemical_list: D007220:Industrial Waste; D000069463:Olive Oil; D010938:Plant Oils; D062065:Wastewater