%0 Journal Article
%T A/O-混凝-BDD 组合工艺处理垃圾渗滤液的研究: Ⅱ. 有机物去除机理<br>Treatment of Landfill Leachate Using A/O-Coagulation-BDD: Ⅱ. Removal Mechanism of the Organic Matters
%A 单迎春
%A 王琮禾
%A 魏婧淼
%A 孙海美
%A 孙卫玲
%J 北京大学学报（自然科学版）
%D 2017
%R 10.13209/j.0479-8023.2017.045
%X 摘要 在A/O-混凝-BDD组合工艺系统最优运行条件下, 采用紫外扫描、分子荧光、GC-MS、红外光谱等多种方法从不同角度深入分析A/O-混凝-BDD组合工艺的各段工艺进出水有机物组成和结构特性的变化, 剖析不同工艺去除有机物的机理。结果表明, A/O工艺对脂肪族有机物支链和类色氨酸容易去除, 对类富里酸有较好的去除, 而对类腐殖酸较难去除; 水力停留时间(HRT)从4.0d增加至10.7d时, 增强了系统对类色氨酸和类富里酸的去除; 回流比从3.0增加至3.5时, 增强了系统对类色氨酸的去除, 但对类富里酸的去除效果变差。混凝过程主要去除脂肪族和蛋白质类有机物以及类腐殖酸, 对类富里酸去除效果较差, 出水中仍残留部分芳香性物质。BDD对渗滤液中残留的各种难降解有机物均能够有效降解。<br>Abstract Landfill leachate was treated by A/O-coagulation-BDD combined processes, and the organic matters during treatment processes were characterized by UV spectra, fluorescence excitation-emission matrix, GC-MS, and Fourier transform infrared spectra under optimum operating conditions. Aliphatic organic matters, tryptophanlike matters, and some fulvic acid-like organic matters can be easily removed by A/O treatment while humic acidlike organic matters can not. The removal efficiencies of ryptophan-like matters and fulvic acid-like organic matters were better as HRT increasing from 4.0 d to 10.7 d. As sludge recirculation ratio increasing from 3.0 to 3.5, the removal efficiency of ryptophan-like matters was better while the removal efficiency of fulvic acid-like organic matters was worse. Coagulation mainly removed aliphatic organic matters, proteins, and some humic acid-like organic matters, but can’t easily remove fulvic acid-like organic matters, and there were still some aroma organic matter in the effluent. BDD treatment can effectively remove kinds of refractory organic matters.
%K 垃圾渗滤液
%K 组合工艺
%K 有机物
%K 光谱
%K GC-MS&lt
%K br&gt
%K landfill leachate
%K group technology
%K organic matter
%K spectrum
%K GC-MS
%U http://xbna.pku.edu.cn/CN/abstract/abstract3087.shtml