TY - JOUR
T1 - Membrane fouling of actual extracellular polymeric substances
AU - Li, Qiang
AU - Hu, Ge
AU - Song, Peng
AU - Khaliunaa, Natsagdorj
AU - Khurram, Rooha
AU - Zhang, Hu
AU - Liu, Xuguo
AU - Wang, Zhan
AU - Gao, Shujuan
AU - Liu, Chao
AU - Wang, Xi
N1 - Publisher Copyright:
© Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.
PY - 2021/1/26
Y1 - 2021/1/26
N2 - Extracellular polymeric substances (EPSs) in activated sludge suspensions are the key substances leading to the membrane fouling. In order to understand the effect of EPSs on the membrane fouling, the actual EPSs solution extracted from activated sludge suspensions was used as the feed solution to conduct dead-end microfiltration experiment under different pressures by using different membranes. The flux (J), fouling resistances (Rm, Rp, Rc and Rtotal) and the available membrane area (A/A0) were used to describe the membrane fouling. The results showed that with the increase of pressure, J and Rtotal increased. Rp firstly increased and then kept constant, Rc always increased and became the dominant resistance. A/A0 decreased from 1 to a constant. Rc plays a key role on Rtotal for different membranes under the same pressure. The sequence of the steady available membrane area (Asteady/A0) for different pressures was: 63.0% (0.05MPa)> 56.5% (0.08MPa)> 53.6% (0.10MPa), and that for different membranes was: 80.1% (0.2μm PES) > 79.9% (0.1μm PES) > 78.4% (0.1μm PAN) > 53.6% (0.1μm PVDF).
AB - Extracellular polymeric substances (EPSs) in activated sludge suspensions are the key substances leading to the membrane fouling. In order to understand the effect of EPSs on the membrane fouling, the actual EPSs solution extracted from activated sludge suspensions was used as the feed solution to conduct dead-end microfiltration experiment under different pressures by using different membranes. The flux (J), fouling resistances (Rm, Rp, Rc and Rtotal) and the available membrane area (A/A0) were used to describe the membrane fouling. The results showed that with the increase of pressure, J and Rtotal increased. Rp firstly increased and then kept constant, Rc always increased and became the dominant resistance. A/A0 decreased from 1 to a constant. Rc plays a key role on Rtotal for different membranes under the same pressure. The sequence of the steady available membrane area (Asteady/A0) for different pressures was: 63.0% (0.05MPa)> 56.5% (0.08MPa)> 53.6% (0.10MPa), and that for different membranes was: 80.1% (0.2μm PES) > 79.9% (0.1μm PES) > 78.4% (0.1μm PAN) > 53.6% (0.1μm PVDF).
UR - http://www.scopus.com/inward/record.url?scp=85101681478&partnerID=8YFLogxK
U2 - 10.1088/1755-1315/647/1/012112
DO - 10.1088/1755-1315/647/1/012112
M3 - Conference article
AN - SCOPUS:85101681478
SN - 1755-1307
VL - 647
JO - IOP Conference Series: Earth and Environmental Science
JF - IOP Conference Series: Earth and Environmental Science
IS - 1
M1 - 012112
T2 - 2020 6th International Conference on Advances in Energy Resources and Environment Engineering, ICAESEE 2020
Y2 - 20 November 2020 through 22 November 2020
ER -