the Treatment Effect of γ-rays Combined with H₂O₂ on Sludge Filtrate

The sludge filtrate was performed by ⁶⁰Co γ-rays irradiation and additive of hydrogen peroxide (H₂O₂). Effects of initial pH, initial H₂O₂ concentration and radiation dose on irradiation degradation efficiency were studied by analyzing the change of COD_Cr、 UV/V is absorbance and turbidity before and after irradiation. The results indicated that the COD_Cr was removed more easily at the acidic condition under the same dose and initial H₂O₂ concentration. Gamma irradiation and H₂O₂ had a significant synergistic effect. When the absorbed dose was 18.75 kGy, the initial pH was 2 and the concentration of H₂O₂ was 2 mmol/L, the removal of COD_Cr and turbidity was 70.4% and 94.9%, respectively.