Treatment for Congo Red Wastewater with Fe-ACF Bipolar Electro-Fenton Technology

This study aimed to evaluate the treatment for Congo Red wastewater with Fe-ACF bipolar electro-Fenton technology. By controlling the influence factors, the treatment efficiency for Cong Red with the Fe-ACF bipolar electro-Fenton process was studied. The results showed that the electrolysis voltage, electrolyte concentration, pH value and electrolytic time have influence on the decolorization of Congo Red wastewater. In the experimental range, the optimum pH was 7. Under the optimum pH value, and at voltage of 25V, electrolyte concentration of 10 g/L, the decolorization ratio for Congo Red wastewater could be up to 100%, and COD removal rate could reach above 95%. Under differ pH value, Congo Red exit at different forms, which affect the oxidation extent for Congo Red. The bipolar electro-Fenton is a valid technology for treatment for dye wastewater.