芬顿和双氧水紫外处理稳定渗滤液的光谱特征

发布时间：2018-09-11 10:58

【摘要】：为研究芬顿(Fenton)法和双氧水紫外(H_2O_2-UV)法处理稳定(填埋场)渗滤液过程中不同类别有机物的去除规律,采用三维荧光光谱(3D-EEM)和254nm波长紫外吸光度(SUVA254),结合荧光区域一体化(FRI)EEM数据处理方法,分析总有机物去除水平相近条件下,两种处理方法去除不同有机物水平和组分变化的特征.结果表明:两种处理方法中,均是蛋白质类物质比腐殖质类物质优先被去除,酪氨酸类物质比色氨酸类物质优先被去除;较高的总有机碳(TOC)去除率段比低去除率段能去除更大比例的最难降解腐殖质类物质.在相近的TOC去除水平下,H_2O_2-UV法比Fenton法对腐殖质类物质的去除更有效,且能更多地去除胡敏酸类物质;Fenton法处理中,Fe2+投加量的增加能更多地通过絮凝沉淀作用去除胡敏酸类物质.Fenton和H_2O_2-UV作为预处理方法应用时,为了既能达到较好处理效果又能节约成本,应选择对腐殖质类物质去除率更高的H_2O_2-UV技术作为预处理方法.
[Abstract]:In order to study the removal regularity of different kinds of organic compounds in landfill leachate treated by Fenton method and hydrogen peroxide ultraviolet (H_2O_2-UV) method, three-dimensional fluorescence spectroscopy (3D-EEM) and 254 nm wavelength ultraviolet absorbance (SUVA254) were used to analyze the similarity of total organic matter removal level in combination with fluorescence region integration (FRI) EEM data processing method. The results showed that protein was removed more preferentially than humus, tyrosine was removed more preferentially than tryptophan, and total organic carbon (TOC) was removed more efficiently at higher TOC removal rates than at lower TOC removal rates. At the same TOC removal level, H_2O_2-UV method is more effective than Fenton method in removing humic substances, and can remove more humic acids. In Fenton method, the increase of Fe2+ dosage can remove humic acids more through flocculation and precipitation. As a pretreatment method, H_2O_2-UV technology with higher removal rate of humus should be selected as pretreatment method in order to achieve better treatment effect and save cost.
【作者单位】：同济大学污染控制与资源化研究国家重点实验室;同济大学固体废物处理与资源化研究所;住房和城乡建设部村镇建设司农村生活垃圾处理技术研究与培训中心;
【基金】：国家“九七三”重点基础研究发展计划(2012CB719801) 上海市2014年度“科技创新行动计划”技术标准项目(14DZ0501500)
【分类号】：X703.1

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