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中文摘要：
为了研究垃圾渗滤液中溶解性有机物（DOM）在腐蚀电池-Fenton（CCF）深度处理过程中的去除特性,采用XAD-8和XAD-4树脂将DOM分成5种组分（亲水性有机物HPI、疏水性有机酸HPO-A、过渡亲水性有机酸TPI-A、疏水性中性有机物HPO-N、过渡亲水性中性有机物TPI-N）,并用紫外和荧光光谱对各组分的降解变化进行分析.研究表明,CCF能有效降低渗滤液中DOM,溶解性有机碳（DOC）去除率达61.8%,其中HPO-A和HPO-N去除率分别达74.9%和66.5%.处理后出水以HPI为主（占DOC的60.1%）.渗滤液中含有大量稠环芳香性有机物和腐殖质类物质,其中HPO-A具有的芳香性最高,紫外吸光度的比值E253/E203遵循HPO-A〉HPO-N〉TPI-A〉TPI-N〉HPI的规律.CCF处理能破坏不饱和共轭结构,减少羰基、胺等官能团结构含量.各组分荧光物质以类芳香性蛋白质和紫外区类富里酸荧光为主,经CCF处理后各组分荧光峰强度降低,可见区和紫外区类富里酸物质去除优势尤为明显.结果表明,CCF能有效去除渗滤液中疏水性组分,降低渗滤液出水组分的复杂化程度.
英文摘要：
To differentiate the transformation of dissolved organic matter（DOM） during corrosion cell-Fenton（CCF） post-treatment,the leachate was separated into five fractions by XAD-8 and XAD-4 resins（hydrophilic fraction,HPI;hydrophobic acid,HPO-A;transphilic acid,TPI-A;hydrophobic neutral,HPO-N;transphilic neutral,TPI-N）.UV-Vis spectroscopy and fluorescence spectroscopy were used for the degradation analysis.Experimental results showed that DOM in landfill leachate reduced 61.8% of dissolved organic carbon（DOC）.Especially for HPO-A and HPO-N,with the removal ratios were up to 74.9% and 66.5%,respectively.The predominant portion in the effluent was HPI（comprising 60.1% of DOC）.Spectral analyses showed that the leachate DOM was composed of abundant condensed ring aromatic compounds and humic substances,with the HPO-A was the highest aromatic fraction.The ratio of absorbance at 253 nm and 203 nm（E253/E203） was decreased in the order of HPO-A HPO-N TPI-A TPI-N HPI.The unsaturated conjugated structures were efficiently destroyed after the CCF treatment,and the functional groups such as carbonyl,amine were also eliminated.The main fluorophores in leachate fractions were in the region of aromatic protein-like and visible fulvic-like.The fluorescence intensity of peaks in each fraction decreased after CCF treatment,especially for the fulvic-like fluorescent substances.The results indicated that the CCF treatment was efficient to remove the hydrophobic fractions and reduce the complicacy of leachate effluent.
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