Journal
CHEMOSPHERE
Volume 203, Issue -, Pages 123-131Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2018.03.171
Keywords
Carbon source recovery; Sludge adsorption; Self-forming dynamic membrane bioreactor; Membrane fouling
Categories
Funding
- Natural Science Foundation of Jiangsu Province of China [BK20141112]
- Fundamental Research Funds for the Central Universities [JUSRP51633B]
- National Key Technology R&D Program of the Ministry of Science and Technology [2014BAD24B03-02]
- Postgraduate Research & Practice Innovation Program of Jiangsu Province [SJCX17-0499]
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Formation process and fouling characteristics of the dynamic membrane were studied in a modified self-forming dynamic membrane bioreactor (SF-DMBR) for recovering the organic matters in wastewater, and the performance of this SF-DMBR was investigated. Results indicated that 80% of the organic matters in wastewater could be quickly recovered under continuous operation. Furthermore, the evolutions of the fouling components were determined during the formation and development processes of dynamic membrane. After the long-term operation, the decreases of protein concentration, accompanying with the increases of polysaccharides and microorganisms contents due to special operating conditions, were interestingly observed in the sludge of membrane surface. This could explain why membrane fouling was much weak. Therefore, though high membrane fluxes at 50-150 Li(m(2).h) were adopted in this study, the reactor can still obtain a long-term stable operation and the operating cycle reached as long as 8 days. Finally, membrane fouling process was described by combined models. (C) 2018 Elsevier Ltd. All rights reserved.
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