Recovery of organic matters in wastewater by self-forming dynamic membrane bioreactor: Performance and membrane fouling
Ling Wang,Hongbo Liu,Wenduo Zhang,Tiantian Yu,Qiu Jin,Bo Fu,He Liu 全文下载
Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, 214122 Wuxi, PR China
Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou 215011, PR China
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 L/(m2 ·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.
Carbon source recovery; Sludge adsorption; Self-forming dynamic membrane bioreactor; Membrane fouling
Chemosphere
Elsevierjournal
10.1016/j.chemosphere.2018.03.171
2018
123-131
Elsevier Ltd
