Characterization of dissolved organic matter in landfill leachate during the combined treatment process of air stripping, Fenton, SBR and coagulation | |
Liu, ZhiPing1,2; Wu, WenHui2; Shi, Ping2; Guo, JinSong3; Cheng, Jin2 | |
刊名 | WASTE MANAGEMENT |
2015-07-01 | |
卷号 | 41页码:111-118 |
关键词 | Dissolved Organic Matter Landfill Leachate Combined Treatment Process Fraction Spectra |
ISSN号 | 0956-053X |
DOI | 10.1016/j.wasman.2015.03.044 |
英文摘要 | A combined treatment process of air stripping + Fenton + sequencing batch reactor (SBR)+ coagulation was performed to remove the pollutants in landfill leachate. Molecular weight (MW) distribution and fractions of dissolved organic matter (DOM) were discussed to study the characteristics. The experiment showed that the removal rate of chemical oxygen demand (COD), five day biological oxygen demand (BOD5) and ammonia nitrogen (NH3-N) by the combined process were 92.8%, 87.8% and 98.0%, respectively. Humic acid (HA) and fulvic acid (FA) were the main fractions in raw leachate with 81.8% of the total COD concentration, while hydrophilic organic matter (HyI) was the dominant fraction in the final effluent of the combined process with 63.5% of the total COD concentration. After the combined treatment process, the removal rate of DOM and fractions HA, FA, HyI were 91.9%, 97.1%, 95.8% and 71.7%, respectively. Organic matters of MW < 2 k and MW > 100k were removed with 90.5% and 97.9% COD concentration after the treatment. The ultraviolet-visible spectra (UV-vis), Fourier transform infrared spectra (FTIR) and three-dimensional excitation-emission matrices spectra (EEMs) indicated that benzene materials and phenol compounds were preferentially removed in air stripping. High MW matters, aromatic rings, conjugated moieties and some functional groups were mainly removed by Fenton. While small MW fractions, carboxylic acids, alcohols and protein-like materials were preferentially biodegraded via SBR. Fulvic-like and humic-like materials were mainly destroyed via Fenton oxidation and coagulation. (C) 2015 Elsevier Ltd. All rights reserved. |
资助项目 | National Natural Science Foundation of China[51278509] |
WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
语种 | 英语 |
出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
WOS记录号 | WOS:000356643300013 |
内容类型 | 期刊论文 |
源URL | [http://119.78.100.138/handle/2HOD01W0/1728] |
专题 | 水质生物转化研究中心 |
作者单位 | 1.Chongqing Univ, Minist Educ, Key Lab Three Gorges Reservoir Reg Ecoenvironm, Chongqing 400045, Peoples R China 2.Chongqing Univ, Fac Urban Construct & Environm Engn, Chongqing 400020, Peoples R China 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400045, Peoples R China |
推荐引用方式 GB/T 7714 | Liu, ZhiPing,Wu, WenHui,Shi, Ping,et al. Characterization of dissolved organic matter in landfill leachate during the combined treatment process of air stripping, Fenton, SBR and coagulation[J]. WASTE MANAGEMENT,2015,41:111-118. |
APA | Liu, ZhiPing,Wu, WenHui,Shi, Ping,Guo, JinSong,&Cheng, Jin.(2015).Characterization of dissolved organic matter in landfill leachate during the combined treatment process of air stripping, Fenton, SBR and coagulation.WASTE MANAGEMENT,41,111-118. |
MLA | Liu, ZhiPing,et al."Characterization of dissolved organic matter in landfill leachate during the combined treatment process of air stripping, Fenton, SBR and coagulation".WASTE MANAGEMENT 41(2015):111-118. |
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