The vegetable oil industry uses high amounts of water as a process and contains high concentrations of various pollutants and compounds resistant to biodegradation. In this study, the coagulation/flocculation process was applied to treat these wastewaters that have a negative effect on the receiving environment. In coagulation-flocculation experiments performed with $Al_2(SO_4)_3.18H_2O$, the highest COD (92%) and Oil-Grease (89%) removal efficiencies were obtained at a coagulant dose of 800 mg $Al^{+3}/L$. In experiments conducted with $FeCl_3.6H_2O$ coagulant, the highest COD (88%) and Oil-Grease (89%) removal efficiencies were obtained at a dose of 600 mg $Fe^{+3}/L$ coagulant. This study demonstrated the effective use of the coagulation/flocculation process in the treatment of vegetable oil industry wastewater containing high COD and Oil-Grease.
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.
