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Treatment of Coking Wastewater by Heterogeneous Catalytic Oxidation Process

Zou Donglei,Yang Zhongping,Song Baohua,Xu Meng,Zhang Wenjing,Lin Xueyu(College of Environment and Resources,Jilin University,Jilin Changchun 130026,China)  
The effects of treating coking wastewater by heterogeneous catalytic oxidation process were studied.The optimum conditions are as follows:γ-Al_2O_3 impregnated by 80g/L Cu(NO_3)_2 as catalyst,wastewater pH 3,volume fraction of catalyst 40% and that of H_2O_2 4%,and reaction time above 3h.After treated,COD and mass concentration of ammonia nitrogen in the wastewater are reduced from 4 540mg/L to below 600mg/L and from 552mg/L to below 160mg/L,respectively.
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