| Title |
Treatment of Dyeing Wastewater by Ultrasonicated Fenton Oxidation |
| Authors |
심인식(In Sick Sim), 임재호(Jae Ho Lim), 박수영(Soo Young Park), 조광명(Kwang Myeung Cho) |
| Abstract |
This study was performed to investigate the applicability of ultrasonic irradiation for improvement of the efficiency of Fenton oxidation for treatment of biologically -treated dyeing wastewater. Ultrasonic irradiation at a frequency of 28㎑ with a maximum vibration output of 200W increased the water temperature in the reactor at an average rate of 0.37℃/min-L. The H₂O₂ concentration in the reactor reached a maximum value of 24.5㎎/L by ultrasonic irradiation for 30min at pH 5. The COD_(Mn) removal efficiency and transmittance improved as the pH decreased, and the optimal pH for ultrasonicated Fenton oxidation reaction was 3.5. At a condition of FeCl₂ dosage of 900㎎/L, a pH of 3.5 and no H₂O₂ addition, ultrasonicated Fenton oxidation was superior to non-sonicated Fenton oxidation in COD_(Mn) removal and transmittance improvement. In conclusion, the results of this research suggest that ultrasonicated Fenton oxidation can be effective for treatment of dyeing wastewater. |