ABSTRACT
142Cavitation using hydrodynamic technique has been proved as an advance treatment option in the treatment of vegetable oil refinery wastewater (VORWW). Properties of VORWW were analyzed in terms of biochemical oxygen demand (BOD), chemical oxygen demand (COD), total organic carbon (TOC), and color. The results given by hydrodynamic cavitation (HC) treatment under controlled conditions were bio-degradability index (BI) of 1.06, COD reduction up to 67.23%, and TOC reduction up to 72.14%, and simultaneously a color reduction up to 55% under the optimum condition of 60 min reaction time. It was found that operating pressure (of 4 bar) in reactor gives the maximum BI (BOD/COD ratio). These results show the power of HC as an effective process intensification technique for the degradation of VORWW.
