摘要：

利用Fenton+MnO₂+A/O组合工艺处理过氧化甲乙酮生产废水。在Fenton+MnO₂预处理阶段对影响废水COD去除率的主要因素进行了考察,得到反应的最佳条件:pH=2.7,30%H₂O₂投加量为0.1 L/L,FeSO₄·7H₂O投加量为5 g/L,MnO₂投加量为8 g/L,MnO₂氧化反应时间为45 min。废水经Fenton+MnO₂氧化预处理后可生化性由0.14提高到了0.25左右。废水经Fenton+MnO₂+A/O组合工艺处理后,出水COD稳定低于500 mg/L。

关键词: 过氧化甲乙酮生产废水, Fenton, MnO₂, A/O工艺

Abstract:

The combined process,Fenton+MnO₂+A/O has been used for treating methylethyl ketone peroxide proces-sing wastewater. The key factors affecting the wastewater COD removing rate in the stage of Fenton+MnO₂ pretreat-ment are investigated. The results show that the optimum conditions are as follows:the pH is 2.7,dosage of 30% of H₂O₂ 0.1 L/L,dosage of FeSO₄·7H₂O 5 g/L,dosage of MnO₂ 8 g/L,and MnO₂ oxidation reaction time 45 min. After the wastewater has been pretreated by Fenton+MnO₂ oxidation process,its biodegradability can be improved from 0.14 to about 0.25. After the wastewater has been treated by Fenton+MnO₂+A/O process,the effluent COD is stably lower than 500 mg/L.

Key words: methylethyl ketone peroxide processing wastewater, Fenton, MnO₂, A/O process

中图分类号: 

• X703.1