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Fenton氧化降解垃圾渗滤液中COD的动力学研究

Keywords: 垃圾渗滤液,COD,Fenton,氧化,动力学

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Abstract:

对絮凝预处理后的垃圾渗滤液进行Fenton氧化处理。通过微分法对Fenton氧化的反应级数进行求解,确定其反应级数为2,并初步建立了Fenton氧化的动力学模型,即1/c=1/c0+kt,由此建立起来的降解的动力学模型与实验数据相吻合;在4个实验基准条件下——初始COD浓度为960mg/L、pH值4、H2O2投加量0.4mol/L、nH2O2/nFe2+3:1,探讨了其中某一变量对反应速率的影响。实验水样为絮凝反应出水,进水COD浓度为912~960mg/L,出水COD浓度为80~112mg/L,COD去除率在87%~92%之间,表明Fenton试剂能够有效地处理垃圾渗滤液。

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