Abstract:

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.

Key words: Fenton reagent, papermaking wastewater, chroma, MnO₂ oxdation

摘要：

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。

关键词: Fenton 试剂, 纸机白水, 色度, MnO₂ 催化氧化

CLC Number: 

• X703.1