Abstract:

A combined process of liquid membrane extraction-catalytic oxidation-coagulation has been used for treating H acid wastewater which COD is 20 000 mg/L. The effects of the optimum formula of liquid membrane separation，and Fenton oxidation technical conditions on the COD removal rate of H acid wastewater are investigated. Experimental results show that the COD removal rate is only 82.2%，when the liquid membrane extraction is used singly. The total COD removal rate can be as high as 99.6%，after the wastewater is treated by the combined process.The final effluent of COD is 85 mg/L，reaching the first class of Integrated Wastewater Discharge （GB 8978-1996）.

Key words: H acid wastewater, liquid membrane extraction, catalytic oxidation, coagulation

摘要：

采用液膜萃取-催化氧化-混凝联合工艺处理H 酸废水（COD 为20 000 mg/L），探讨了液膜分离最佳配方、Fenton 氧化工艺条件对COD 去除率的影响。结果表明：单独采用液膜萃取时，COD 去除率仅为82.2%；采用联合工艺处理后，COD 总去除率达99.6%，最终出水的COD 为85 mg/L，达到污水综合排放标准GB 8978-1996 的一级标准要求。

关键词: H酸废水, 液膜萃取, 催化氧化, 混凝

CLC Number: 

• X703