北京大学学报（自然科学版）2018，Vol.54Issue(3)：633-643,11.DOI:10.13209/j.0479-8023.2017.175
渗滤液生化出水DOM在深度混凝过程中的去除特征
Removal Features of DOM in Bio-Treated Effluents by Enhanced Coagulation Process
摘要
Abstract
Three advanced flocculants were used to treat the biochemical treatment samples extracted from the landfill leachate. In order to explore the transformation characteristics of dissolved organic matter (DOM) in the process of coagulation, all the samples' DOM from three stages were characterized by ultraviolet-visible spectra (UV-Vis), three dimensional fluorescence spectra (EEM) and Fourier transform ion cyclotron resonance electro-spray mass spectrometry (ESI FT-ICR MS). UV-Vis spectra showed that the ratio of small molecules increased in water while both the humification degree and condensation degree reduced after coagulation. EEM suggested that the removal efficiency of protein and humic acid substances were very high after coagulation. FT-ICR MS indica-ted that there was a strong selectivity of flocculants for the removable DOM in different stages of coagulation. DOM in the final residual water was mainly smaller molecular weight, containing impurity atoms with low unsatu-ration, O/C<0.3, and H/C>1.5.关键词
垃圾渗滤液/生化单元出水/溶解性有机物/混凝Key words
landfill leachate/biochemical unit effluent/dissolved organic matter (DOM)/coagulation分类
资源环境引用本文复制引用
王敬博,张林楠,李振山..渗滤液生化出水DOM在深度混凝过程中的去除特征[J].北京大学学报（自然科学版）,2018,54(3):633-643,11.基金项目
辽宁省教育厅科学技术研究项目(201764136)资助 （201764136）
