超声对垃圾渗滤液中溶解性有机物的影响

发布时间：2018-05-29 07:02

本文选题：垃圾渗滤液 + 超声　；参考：《环境科学与技术》2016年11期

【摘要】：采用三维荧光光谱(EEM)和荧光区域指数分析法研究了垃圾渗滤液的荧光光谱特性。渗滤液经不同超声频率处理后,位于λ_(Ex)/λ_(Em)=270/345 nm和240/449 nm的特征峰消失,位于λ_(Ex)/λ_(Em)=330/430 nm(峰a)和280/391 nm(峰b)的特征峰在80 k Hz时峰强增加幅度和位移变化最大,但两峰强度之比r(a,b)和EEM的P_(Ⅲ,n)与P_(Ⅴ,n)增加幅度最低;不同初始p H渗滤液经超声处理后,特征峰位移出现明显差别,除p H为11时P_(Ⅲ,n)有所下降外,其余P_(Ⅴ,n)和P_(Ⅲ,n)都呈上升趋势,pH为3时P_(Ⅴ,n)增加幅度最显著;提高渗滤液初始浓度后,发现P_(Ⅲ,n)和P_(Ⅴ,n)升幅增大,P_(i,n)的变化规律显示对超声的敏感程度是色氨酸类有机物酪氨酸类有机物微生物沥出物富里酸类有机物腐殖酸类有机物;GC/MS分析结果表明超声处理后渗滤液中芳烃和烷烃有机物相对含量减少,醇类、羧酸和酯类有机物相对含量增加。
[Abstract]:The fluorescence spectrum characteristics of landfill leachate were studied by three dimensional fluorescence spectroscopy (EEM) and fluorescence region index analysis. The characteristic peaks of the leachate in the Ex / lambda (Em) =270/345 nm and 240/449 nm were disappearing after the treatment of different ultrasonic frequencies, and the peak intensity of the characteristic peaks of the lambda Ex / Ex / [Em) = 330/430 nm (peak a) and the peak (peak) The increase of amplitude and displacement is the greatest, but the increase of the two peak intensity ratio R (a, b) and EEM P_ (III, n) and P_ (V, n) is the lowest, and the characteristic peak displacements of different initial P H leachate are obviously different. Except for P H is 11, the rest (III) and (III)) all increase. When the initial concentration of leachate was increased, the increase of P_ (III, n) and P_ (V, n) was found, and the variation of P_ (I, n) showed that the sensitivity to ultrasound was the organic compounds of tryptophan organic compounds, organic compounds, organic compounds, fulvic acids, organic compounds, and organic compounds. The results of GC/MS analysis showed that the aromatics in the leachate after ultrasonic treatment The relative content of organic compounds and alkanes decreased, and the relative content of alcohols, carboxylic acids and esters increased.
【作者单位】：安徽理工大学地球与环境学院;巢湖市生活垃圾处置管理处;
【基金】：国家重点基础研究发展项目“973计划”项目(2014CB238901) 安徽省自然科学青年基金(1608085QE125) 大学生创新创业训练计划项目(201510361004)
【分类号】：X703

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