Abstract:The visible-assisted multiphase electrocatalytic treatment of phenol simulated wastewater was carried out, and the activated carbon supported N-doped photocatalyst was prepared as the particle electrode. The optimal reaction conditions for the treatment of simulated phenol wastewater by visible light-assisted multiphase electrocatalysis were determined.The COD concentration was 378.5 mg/L, the pH was 3.0, the electrode plate spacing was 10 cm, the electrolyte Na2SO4 was added at a concentration of 1 g/L, the electrolysis voltage was 15 V, and the aeration rate was 11 L/min. At this time, the COD removal rate was 85.12%.The synergistic effect and reaction mechanism of visible light-assisted multiphase electrocatalysis were analyzed by comparing the effects of visible light-assisted multiphase electrocatalysis, polyphase electrocatalysis and visible light on phenol treatment. The visible light-assisted multiphase electrocatalytic method has a remarkable effect on the degradation of phenol simulated wastewater, and the operation is simple. By further optimizing the reaction conditions, it can be applied to the practice of phenol wastewater treatment engineering.