The Application of MBR for the Treatment of Municipal Wastewaters at Short SRT

被引：0
作者：
Duan, Liang [1 ]
Song, Yonghui [1 ]
Xia, Siqing [2 ]
Li, Jixiang [2 ]
Hermanowicz, Slawomir W. [3 ]
机构：
[1] Chinese Res Inst Environm Sci, Sect Urban Water Environm Res, Beijing, Peoples R China
[2] Tongji Univ, Coll Environm Sci & Engn, Shanghai, Peoples R China
[3] Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA USA
来源：
2010 4TH INTERNATIONAL CONFERENCE ON BIOINFORMATICS AND BIOMEDICAL ENGINEERING (ICBBE 2010) | 2010年
关键词：
membrane bioreactor; sludge retention time; membrane fouling; extracellular polymeric substances; soluble microbial products; SUBMERGED MEMBRANE BIOREACTOR; SOLUBLE MICROBIAL PRODUCTS; WASTE-WATER TREATMENT; ACTIVATED-SLUDGE; FILTRATION CHARACTERISTICS; PERFORMANCE; OPERATION; POLYMERS; BIOMASS;
D O I：
暂无
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
The objective of this work is to compare the performance and fouling characteristic in a membrane bioreactors (MBR) operated at three different short sludge residence times for nitrification of a synthetic wastewater. The results shown the MBR were capable of achieving an average 90% removal of NH4+-N and 95% removal of COD, almost independent of SRT. At longer SRT, concentrations of MLSS and MLVSS in the bioreactor increased accordingly, whereas the ratios of MLVSS/MLSS decreased. The dehydrogenase activity results indicated that decreased sludge age could increase the microbial activity in the MBR. Analysis of EPS and SMP showed that the protein, carbohydrate, TOC and DNA concentrations all decreased with increasing SRT, indicating that the membrane fouling potential decreased as SRT increased. The Protein and carbohydrate were the main part of SMP and occupied around 93% in all MBRs. All resistance (R, R-M, R-C, R-F) increased as SRT decreased. Fouling resistance (R-F) was the main resistance in MBR which value and proportion in total resistant all increased as SRT decreased.
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页数：4
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