Predictive models and factors affecting natural organic matter (NOM) rejection and flux decline in ultrafiltration (UF) membranes

Cho, Jaeweon; Amy, Gary L.; Yoon, Yeomin; Sohn, Jinsik

doi:10.1016/s0011-9164(02)00206-0

Cited by 16 publications

(8 citation statements)

References 7 publications

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“…Under laminar flow conditions a special velocity value profile is formed along with concentration profile in the boundary layer [16]. The concentration values profile is formed due to convection and diffusion.…”

Section: Ipicse-2016mentioning

confidence: 99%

The influence of hydrodynamic factors, membrane surface properties and channel geometries on membrane performance and fouling mechanisms

Первов

2016

MATEC Web Conf.

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Abstract. Modern theoretical understanding of colloidal and suspended matter membrane fouling mechanisms are presented and discussed. Stateof-the-art simulation models of concentration polarization calculations for different channel conditions are described and influence of the fouling layers on the flux and rejection decrease are evaluated. Results of experimental investigations are presented that suggest a quantitative evaluation of fouling rates and membrane flux prognosis due to colloidal fouling with time. The influence of channel geometry on fouling is demonstrated and discussed. The main disadvantage of spiral wounded membrane modules which is attributed to the presence of a separation spacer mesh in the feed channel is discussed.

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Section: Ipicse-2016mentioning

confidence: 99%

The influence of hydrodynamic factors, membrane surface properties and channel geometries on membrane performance and fouling mechanisms

Первов

2016

MATEC Web Conf.

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“…Several models [16][17][18][19][20] have been developed to describe the membrane fouling during constant pressure filtration process. Among them, three kinds of blocking models (complete blocking, standard blocking, and intermediate blocking) and the cake filtration model are described by Eqs.…”

Section: Membrane Foulingmentioning

confidence: 99%

Using tertiary-treated municipal wastewater as makeup water by reverse osmosis membrane

Kornboonraksa

2015

Desalination and Water Treatment

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A B S T R A C TThe objective of this research was to study the possibility of using reclaimed municipal wastewater in cooling tower by treating the water using reverse osmosis (RO) membrane. In this study, RO membrane was operated at initial flow rate of 6.3 m 3 /d, whereas the initial transmembrane pressure (TMP) was at 116 psi. During the operating period, permeate flux slightly decreased to 4.8 m 3 /day with the increase of TMP up to 127 psi and membrane fouling resistance of 3.34E + 12 m −1 . Major membrane fouling mechanism was complete blocking followed by standard blocking and cake layer formation. Average permeate characteristics were 36.3 μS/cm of conductivity, 42.3 mg/L of TDS, 4.4 mg/L of hardness, 22.7 mg/L as CaCO 3 of alkalinity, 0.002 mg/L of iron, 0.05 mg/L as CaCO 3 , 1.5 mg/L of chloride, 2.1 mg/L of silica, and there was no phosphate passing through RO membrane. Percent rejections compared to UF treated wastewater were in the range of 90.2-99.9% except for silica where rejection was only 85.1%. Scaling and corrosion index was studied in terms of Langelier saturation index (LSI) and Ryznar stability index (RSI). Without RO membrane, LSI value was −0.59 and RSI value was 8.5. With RO membrane, LSI value was −5.0 and RSI value was 17.0. From calculation of cycles of blowdown, it was found that when using the membrane, the cycles increased from 2.3 to 44 cycles. This, then, resulted in reduction of makeup water from 379.0 to 221.2 m 3 /d, a decrease by 41.6%. Payback period of installation and operation of RO membrane system was 14 months.

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“…This algorithm has been applied to the development of various models by considering a single hydraulic resistance by the polarized layer or incorporating several different fouling mechanisms [21][22][23]. Using Eq.…”

Section: Magnitude Of Apparent Membrane Resistancesmentioning

confidence: 99%

Enhanced chemical oxygen demand removal and flux reduction in pulp and paper wastewater treatment using laccase-polymerized membrane filtration

Fan

2010

Journal of Hazardous Materials

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Predictive models and factors affecting natural organic matter (NOM) rejection and flux decline in ultrafiltration (UF) membranes

Cited by 16 publications

References 7 publications

The influence of hydrodynamic factors, membrane surface properties and channel geometries on membrane performance and fouling mechanisms

The influence of hydrodynamic factors, membrane surface properties and channel geometries on membrane performance and fouling mechanisms

Using tertiary-treated municipal wastewater as makeup water by reverse osmosis membrane

Enhanced chemical oxygen demand removal and flux reduction in pulp and paper wastewater treatment using laccase-polymerized membrane filtration

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