2011
DOI: 10.1016/j.watres.2011.05.046
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Effect of temperature shocks on membrane fouling in membrane bioreactors

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Cited by 99 publications
(48 citation statements)
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“…Moreover, the state of the membrane at a specific applied flux is affected by previous flux steps. Some authors have attempted to overcome this limitation by introducing a period of relaxation, or operation at zero or low flux, between the flux steps [8,13,11] to control reversible fouling, i.e. the layer at the membrane surface removed by physical cleaning [5].…”
Section: Introductionmentioning
confidence: 99%
“…Moreover, the state of the membrane at a specific applied flux is affected by previous flux steps. Some authors have attempted to overcome this limitation by introducing a period of relaxation, or operation at zero or low flux, between the flux steps [8,13,11] to control reversible fouling, i.e. the layer at the membrane surface removed by physical cleaning [5].…”
Section: Introductionmentioning
confidence: 99%
“…This could be attributed to the combined effect of deflocculation and reduction in viscosity in the first and/or second 5 1C shock and temporarily decreased mixed liquor viscosity and improved shear stress in later temperature shocks (5 and 10 1C). Deflocculation due to temperature shock would negatively affect membrane fouling, while an increase in temperature decreases the viscosity of the mixed liquor, and consequently increase the hydraulic shearing force on the membrane surface [12]. Viscosity was found to have positive effects on membrane fouling [38] and negative effects on flux [39] shocks after the first or second 5 1C shocks, as indicated by the PSDs reported in our previous study [19].…”
Section: Effect Of Temperature Shock On Membrane Fouling Tendencymentioning
confidence: 55%
“…When temperature increases, the membrane filtration resistance would be expected to reduce, because the sludge viscosity decreases and water permeability increases at high temperatures. Furthermore, the shear stress on membrane surfaces would be expected to increase with an increase in temperature, due to the reduced viscosity at higher temperature [12]. However, the higher the operating temperature, the greater the fouling resistance was observed in this study.…”
Section: 4mentioning
confidence: 76%
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