Experimental Study of Phenolic Wastewater by Electrochemical Catalysis Oxidation

The treatment of simulated wastewater containing phenol by electrochemical catalysis oxidation in two-dimensional electro bath is studied. Factors affecting the removal efficiency of hydroquinone are investigated by static experiment, such as electrolyte concentration, electrolysis voltage, air supply and initial pH value. The results showed, with the increasing of electrolyte concentration, the removal rate of hydroquinone first increased, then decreased, with the applied voltage increased, the removal of hydroquinone has be increased. It is helpful for hydroquinone removal in the mild acid, neutral and mild base conditions. The removal rate is highest in the mild base condition. When the electrolyte concentration of Na₂SO₄ is 0.04mol·L^-1, the voltage is 5V, air supply is 80L·h^-1, pH is 8.5, the removal rate of hydroquinone is 85.50%.