Characterization and removal of dissolved organic matter in a vertical flow constructed wetland

被引：42
作者：
Du, Xiaoli [1 ]
Xu, Zuxin [2 ]
Li, Junqi [1 ]
Zheng, Lei [3 ]
机构：
[1] Beijing Univ Civil Engn & Architecture, Key Lab Urban Stormwater Syst & Water Environm, Minist Educ, Beijing 100044, Peoples R China
[2] Tongji Univ, Sch Environm Sci & Engn, Shanghai 200092, Peoples R China
[3] Beijing Municipal Environm Protect Bur, Pollut Prevent & Control Div, Beijing 100048, Peoples R China
来源：
ECOLOGICAL ENGINEERING | 2014年 / 73卷
基金：
中国国家自然科学基金;
关键词：
Dissolved organic matter; Molecular weight; Three-dimensional excitation-emission matrix; Vertical flow constructed wetland; EXTRACELLULAR POLYMERIC SUBSTANCES; MATRIX FLUORESCENCE SPECTROSCOPY; DOMESTIC WASTE-WATER; 3-DIMENSIONAL EXCITATION; ISOLATED FRACTIONS; NATURAL-WATERS; EFFLUENT; CARBON; CONSTITUENTS; WASTEWATERS;
D O I：
10.1016/j.ecoleng.2014.09.098
中图分类号：
Q14 [生态学（生物生态学）];
学科分类号：
071012 ; 0713 ;
摘要：
Isolated dissolved organic matter (DOM) fractions and their removal potentials in a vertical flow constructed wetland were characterized and identified. Resin isolation, molecular weight distribution and three-dimensional excitation-emission matrix (EEM) fluorescence spectroscopy were used to characterize DOM in raw sewage and treated effluent. The results showed that DOM fractions with molecular weights >10 kDa in raw domestic sewage could be removed from the system more preferentially. Compared with hydrophilic organics, hydrophobic organics tended to be removed in the vertical flow constructed wetland more preferentially. Acidic and neutral organic matters featured higher removal rates than that of basic matters. Protein-like substances were representative of the biodegradable DOM, which made up a substantial proportion of the total dissolved organic carbon (DOC) removed from the system, while visible fulvic-like hydrophilic substances represented nonbiodegradable DOM, which made up a minor proportion of the total DOC removed from the vertical flow constructed wetland. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：610 / 615
页数：6
相关论文
共 38 条
[1]   ISOLATION OF HYDROPHILIC ORGANIC-ACIDS FROM WATER USING NONIONIC MACROPOROUS RESINS [J].
AIKEN, GR ;
MCKNIGHT, DM ;
THORN, KA ;
THURMAN, EM .
ORGANIC GEOCHEMISTRY, 1992, 18 (04) :567-573
[2]   Correlation of EPS content in activated sludge at different sludge retention times with membrane fouling phenomena [J].
Al-Halbouni, Djamila ;
Traber, Jacqueline ;
Lyko, Sven ;
Wintgens, Thomas ;
Melin, Thomas ;
Tacke, Daniela ;
Janot, Andreas ;
Dott, Wolfgang ;
Hollender, Juliane .
WATER RESEARCH, 2008, 42 (6-7) :1475-1488
[3]   Detecting river pollution using fluorescence spectrophotometry: case studies from the Ouseburn, NE England [J].
Baker, A ;
Inverarity, R ;
Charlton, M ;
Richmond, S .
ENVIRONMENTAL POLLUTION, 2003, 124 (01) :57-70
[4]   The use of vertical flow constructed wetlands for on-site treatment of domestic wastewater: New Danish guidelines [J].
Brix, H ;
Arias, CA .
ECOLOGICAL ENGINEERING, 2005, 25 (05) :491-500
[5]   Spectroscopic characterization of the structural and functional properties of natural organic matter fractions [J].
Chen, J ;
Gu, BH ;
LeBoeuf, EJ ;
Pan, HJ ;
Dai, S .
CHEMOSPHERE, 2002, 48 (01) :59-68
[6]   Fluorecent staining for study of extracellular polymeric substances in membrane biofouling layers [J].
Chen, Ming-Yuan ;
Lee, Duu-Jong ;
Yang, Z. ;
Peng, X. F. ;
Lai, J. Y. .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2006, 40 (21) :6642-6646
[7]   Characterization of marine and terrestrial DOM in seawater using excitation emission matrix spectroscopy [J].
Coble, PG .
MARINE CHEMISTRY, 1996, 51 (04) :325-346
[8]   Quantitative estimates of labile and semi-labile dissolved organic carbon in the western Arctic Ocean: A molecular approach [J].
Davis, Jenny ;
Benner, Ronald .
LIMNOLOGY AND OCEANOGRAPHY, 2007, 52 (06) :2434-2444
[9]   Estimation of the hydrophobic fraction of dissolved organic matter in water samples using UV photometry [J].
Dilling, J ;
Kaiser, K .
WATER RESEARCH, 2002, 36 (20) :5037-5044
[10]   Characterization of the dissolved organic matter in sewage effluent of sequence batch reactor: the impact of carbon source [J].
Guo, Jin ;
Sheng, Feng ;
Guo, Jianhua ;
Yang, Xiong ;
Ma, Mintao ;
Peng, Yongzhen .
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING, 2012, 6 (02) :280-287
1234