Treatment of Vegetable Oil Industry Wastewaters with Coagulation-flocculation Methods

This study was conducted to investigate potential use of environment-friendly treatment technologies in treatment of vegetable oil industry wastewaters containing various pollutants at high concentrations and compounds resistant to biodegradation. Within the scope of the study, coagulation-flocculation processes were experimented. Various configurations were tried to achieve optimum removal efficiencies. In coagulation-flocculation experiments with Al2(SO4)3.18H2O coagulant, the highest COD (92%) and Oil-Grease (89%) removal efficiencies were achieved at 800 mg Al+3/L coagulant dose. In experiments with FeCl3.6H2O coagulant, the highest COD (88%) and Oil-Grease (89%) removal efficiencies were achieved at 600 mg Fe+3/L coagulant dose.