γ辐照联合H<sub>2</sub>O<sub>2</sub>处理污泥滤液的研究

γ辐照联合H₂O₂处理污泥滤液的研究

摘要: 采用⁶⁰Co γ射线辐照处理污泥滤液，通过对比处理前后化学需氧量（COD）、紫外可见吸光度和浑浊度的变化，研究了辐照处理中初始pH、初始H₂O₂浓度和吸收剂量对污泥滤液处理效果的影响。结果表明：在相同吸收剂量和初始H₂O₂浓度条件下，酸性条件更利于COD_Cr的降低；γ辐照联合H₂O₂处理存在显著协同效应，吸收剂量为18.75 kGy、初始H₂O₂浓度为2 mmol/L时，污泥滤液CODcr去除率达70.4%，浑浊度下降94.9%。

Abstract: 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.