期刊
BIORESOURCE TECHNOLOGY
卷 113, 期 -, 页码 154-160出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.12.002
关键词
Membrane bio-reactor; OLR; Membrane fouling; TMP; LC-OCD
资金
- ARC [LP0989685]
- Australian Research Council [LP0989685] Funding Source: Australian Research Council
In this study, the influence of organic loading rate (OLR) on the performance of a membrane bio-reactor (MBR) was investigated. The MBR was operated with 6 different OLRs between 0.5 and 3.0 kg COD/m(3) d. The hydrodynamic parameters of the MBR were kept constant. The hydraulic retention time and sludge retention time were kept at 8 h and 40 d respectively. From the experimental investigation, it was found that the removal efficiency of DOC. COD and NH4-N decreased when OLRs were increased from 0.5 to 3.0 kg COD/m(3) d. Higher OLRs of 2.75-3.0 kg COD/m(3) d resulted in a higher transmembrane pressure development. The fractionation of organic matters showed more hydrophilic substances with higher OLRs. A detailed organic matter characterization of membrane foulant, soluble microbial product and extracellular polymeric substances showed that bio-polymers type substances together with humic acid and lower molecular neutral and acids were responsible for membrane fouling. (C) 2011 Elsevier Ltd. All rights reserved.
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