新型Fenton试剂处理纸机白水的研究

New type of Fenton reagent used for treating paper-making wastewater

研究利用MnO2和FeSO4共同催化的新型Fenton试剂处理纸机白水的生化出水,考察了初始pH、FeSO4投加量、H2O2投加量以及MnO2的催化氧化对废水中COD和色度去除率的影响。结果表明:在pH=3.0、FeSO4投加量为300 mg/L、H2O2投加量为0.5 mL/L,反应时间为1 h,出水COD可降至60 mg/L以下,色度可达到4倍。投加MnO2可提高Fenton试剂对COD去除率,且可减少H2O2投加量。

In this study, a new type of Fenton reagent has been simultaneously catalyzed by using both MnO2 and FeSO4 for treating bio-chemical effluent of papermaking wastewater. The effects of initial pH, dosages of FeSO4, and H2O2, and catalytic oxidation of MnO2 on the removing rates of COD and chroma are investigated. The results show that when pH is 3.0, FeSO4 dosage 300 mg/L, H2O2 dosage 0.5 mL/L and reaction time 1 h ,the effluent COD could be reduced to 60 mg/L and chroma can reach 4 times. Adding MnO2 could increase the COD removing rate, and reduce the H2O2 dosage by using Fenton reagent.