中文关键词
城市污水膜分离能量回收有机物富集三维荧光光谱 | 英文关键词municipal wastewatermembrane separationenergy recyclingorganic matter enrichmentthree-dimensional fluorescence spectroscopy |
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| 中文摘要 |
| 利用高效液相色谱法、三维荧光光谱法分析，考察以膜分离为主的物化处理方式对城市污水中各污染因子的去除特性，尤其对溶解性有机物的富集特性.结果表明，经以膜分离为主的物化方式处理后的城市生活污水属于低碳氮比废水；微絮凝过滤主要富集的是原水中非溶解性有机物和相对分子质量大于30000的芳香类蛋白物质，富集程度在60.93%，尤其是类酪氨酸和类色氨酸；0.45 μm和0.22 μm醋酸纤维膜能将相对分子质量大于30000的溶解性有机物全部富集，但是微滤膜对有机物的富集没有选择性；纳滤主要对城市污水中的富里酸类物质和腐殖酸类物质有很好富集效果，富集程度分别为52.01%和53.57%，溶解性有机物的总体富集程度在42%左右. |
| 英文摘要 |
| The removal characteristics of various pollution factors in municipal wastewater by membrane-based physical and chemical treatment, especially the enrichment characteristics of dissolved organic matter, were investigated by high performance liquid chromatography and three-dimensional fluorescence spectroscopy. The results showed that the municipal wastewater had a low COD/TN ratio after the treatment. The micro-flocculation filtration mainly enriched the non-dissolvable organic matter in the raw water and aromatic protein substances with relative molecular mass greater than 30 000. The enrichment degree was up to 60.93%, especially for tyrosine-like and tryptophan-like substances. The dissolved organic matter (DOM) with a molecular weight greater than 30 000 was enriched fully by 0.45 μm and 0.22 μm acetate membranes, but the microfiltration membrane was not selective for the enrichment of organic matter. Thus, NF mainly enriched the fulvic acid and humic acid in urban sewage. The enrichment degree was 52.01% and 53.57%, respectively, and the total enrichment degree of dissolved organic matter was about 42%. |
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