摘要：

采用纳米Fe₃O₄活化Na₂S₂O₈-NaClO联合体系处理垃圾渗滤液生化尾水，考察了各因素对氧化效果的影响。实验结果表明：两种氧化剂具有显著协同作用，当pH=7、Na₂S₂O₈投加量为2 g/L、NaClO投加量为30 mL/L（有效氯为>10%）、Fe₃O₄投加量为0.4 g/L时，COD和氨氮去除率分别为75%和86%。通过三维荧光光谱分析得出：经过Na₂S₂O₈-NaClO体系处理后的垃圾渗滤液污染程度明显下降。

关键词: 渗滤液, Na₂S₂O₈, NaClO

Abstract:

The biochemical tail water of landfill leachate was treated with nano-Fe₃O₄ activated Na₂S₂O₈-NaClO system. The effects of various factors on the oxidation reaction were investigated. The experimental results show that two kinds of oxidants have a significant synergistic effect. When the pH is 5, Na₂S₂O₈ dosage is 2 g/L, NaClO dosage is 30 mL/L(effective chlorine is>10%), and Fe₃O₄ dosage is 0.4 g/L, the removal rates of COD and ammonia nitrogen are 82% and 65%, respectively. The contamination degree of landfill leachate after the Na₂S₂O₈-NaClO treatment was obviously decreased through three dimensional fluorescence spectrum analysis.

Key words: leachate, Na₂S₂O₈, NaClO

中图分类号: 

• X703.1