Comparison of sono-direct and sono-alternate current electro-coagulation processes for removal of color and turbidity from domestic wastewater

Background: Nowadays there is a problem related to wastewater handling which released from different activities. Electrocoagulation has been dominant treatment method for treatment. There are forms of electrocoagulation methods Nevertheless, was no comparison made the removal efficiency sono-alternate current (SAC), alternate (AC), sono-direct (SDC), and direct (DC) process. Methods: The compared color turbidity Jimma University domestic wastewater. Batch reactor DC/AC cell used determine efficiency. During comparison, response surface methodology (RSM) analyze optimize data taken laboratory. In addition, ANOVA interaction effects parameters. Results: about 97.53% 95.28% respectively, using (DCE). For (ACE), 98.35% 96.12%, respectively. sono-DCE (SDCE) obtained be 98.55% 98.27%, respectively sono-ACE (SACE), 99.95% 99.76%, at optimum experimental conditions chemical oxygen demand (COD) 960 g/L, initial pH 6.8, density 0.4 A/dm2 , inter-terminal spacing 1 cm, association electrode Al-Al. Conclusion: According findings this study, it can concluded that, SAC best promising technique with all other methods.