期刊
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
卷 102, 期 -, 页码 56-63出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ibiod.2015.01.011
关键词
Soluble microbial product (SMP); Effluent organic matter (EfOM); Ultrafiltration (UF); Excitation-emission matrix (EEM); Parallel factor analysis (PARAFAC)
资金
- National Natural Science Foundation of China [51138008]
- Program for New Century Excellent Talents in University [NCET-13-0169]
- State Key Laboratory of Urban Water Resource and Environment [2014DX04]
- Fundamental Research Funds for the Central Universities
- Science and Technology Planning Project of Chancheng District [2013A1044]
Membrane fouling of soluble microbial product (SMP) and effluent organic matter (EfOM) in ultrafiltration (UF) was investigated by using fluorescence excitation emission matrix coupled with parallel factor analysis (EEM-PARAFAC) as well as dissolved organic carbon (DOC) and polysaccharides measurement. SMP and EfOM samples were generated in bench-scale sequencing batch reactors (SBRs) fed with synthetic wastewater and domestic wastewater under different solid retention times (SRTs). Results showed that EfOM contained more DOC and more sub-fractional components except for tyrosine-like substances compared to SMP, however, SMP caused more severe fouling. The fluorescence intensity of tyrosine-like substances in UF feed showed good correlation with membrane fouling index, suggesting that it can serve as a fouling potential indicator. The mass balance analysis also indicated that the tyrosine-like substances was a major foulant. Membrane fouling was alleviated as SRT increased, which can be associated with the decrease of protein-like (tyrosine-like and tryptophan-like) substances under longer SRT. (C) 2015 Elsevier Ltd. All rights reserved.
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