EXPERIMENTAL STUDY ON TREATMENT OF PHENOL WASTEWATER BY THREE-DIMENSIONAL ELECTRODE FENTON METHOD

Three-dimensional electrode electro-Fenton method was used to treat phenol-containing wastewater from pottery process. The removal efficiency of phenol and COD was studied with the single factor of pH, time, voltage, FeSO₄·7H₂O dosage, ventilation, electrolyte dosage and electrode spacing selected and setted at different levels. The electrochemical energy consumption of the method was also discussed. The results showed that under the conditions of pH of 3, voltage of 15V, FeSO₄·7H₂O dosage of 1.8 g/L, ventilation of 9 L/min, Na₂SO₄ powder dosage of 1.0 g/L, electrode spacing of 10 cm and reaction time of 120 min, the removal rates of phenol and COD in wastewater could reach 94.13% and 86.67% respectively. The treatment effect was obvious and the energy consumption was much lower than that of two-dimensional electrodes. It could provide reference for practical application.