| 催化臭氧氧化垃圾渗滤液水质变化的研究 |
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| 作者单位： | ;1.河南师范大学环境学院河南省环境污染控制重点实验室;2.黄淮水环境与污染防治教育部重点实验室;3.河南师范大学化学与化工学院 |
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| 摘 要： | 采用CuO为催化剂对臭氧氧化垃圾渗滤液水质变化进行了研究.结果表明:CuO对臭氧氧化垃圾渗滤液反应具有明显的催化作用,最佳催化剂投加量为0.7g/L;BOD5/COD的研究表明臭氧氧化提高了垃圾渗滤液生物降解性;UV254研究显示催化剂存在条件下臭氧氧化可以使废水中不饱和有机物和芳香族化合物快速分解;三维荧光光谱(Excitation-Emission Matrix,EEM)分析结果表明垃圾渗滤液中含有较多类富里酸物质,臭氧氧化后类富里酸物质减少,并产生了新的有机物峰;臭氧氧化作为生物处理的预处理手段时,催化剂的加入能够加快反应速度,缩短反应时间,减少臭氧使用量.
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| 关 键 词： | 臭氧 垃圾渗滤液 催化臭氧氧化 难降解废水 生化性 |
The Quality Change of Landfill Leachate in Catalytic Ozonation |
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| Institution: | ,School of Environment,Henan Normal University,Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control,Ministry of Education,Henan Key Laboratory of Environmental Pollution Control,School of Chemistry and Chemical Engineering,Henan Normal University |
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| Abstract: | The quality changes of landfill leachate were studied in catalytic ozonation process using CuO as catalyst.CuO showed obvious catalysis in reaction.The best catalyst dosing quantity is 0.7g/L.BOD5/COD showed that the biodegradability of landfill leachate improved in ozonation.The result of UV254 shows that the catalyst existence conditions can make unsaturated organic matters and aromatic compounds in wastewater rapid decomposition.Excitation-Emission Matrix(EEM)shows that the leachate contained more kind of fulvic acid substances.Fulvic acid substances were reduced after ozonation and generate some new peak of organic compounds.Catalyst can accelerate the emergence of the turning point.The addition of catalyst can shorten the reaction time and reduce the usage of ozone while ozonation as a pretreatment for biotreatment. |
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| Keywords: | ozone landfill leachate catalytic ozonation recalcitrant wastewater biodegradability |
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