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Related Experiment Videos

[Resistance analyses for recirculated membrane bioreactor].

Qi Yang1, Xia Huang, Hai-Tao Shang

  • 1School of Water Resources and Environment, China University of Geosciences, Beijing 100083, China. qiyang8232@163.com

Huan Jing Ke Xue= Huanjing Kexue
|March 1, 2007
PubMed
Summary
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The resistance-in-series and modified gel-polarization models accurately predict permeate flux in turbulent ultrafiltration systems. Gel layer resistance is identified as the primary factor contributing to concentration polarization.

Area of Science:

  • Environmental Engineering
  • Chemical Engineering
  • Water Treatment Technologies

Context:

  • Recirculated membrane bioreactors (MBRs) are crucial for wastewater treatment.
  • Turbulent ultrafiltration (UF) systems are employed for advanced water purification.
  • Understanding fouling mechanisms is essential for optimizing UF performance.

Purpose:

  • To extend existing resistance models to turbulent UF systems.
  • To investigate the contribution of concentration polarization to fouling.
  • To identify the dominant resistance factor in dye wastewater UF.

Summary:

  • Resistance-in-series and modified gel-polarization models were applied to a tubular membrane module during dye wastewater ultrafiltration.
  • Both models demonstrated high accuracy in predicting permeate flux under turbulent flow conditions.

Related Experiment Videos

  • Analysis revealed that gel layer resistance is the most significant component of concentration polarization, impacting overall membrane performance.

    • Impact:

    • Provides validated models for predicting permeate flux in turbulent UF systems.
    • Highlights the critical role of gel layer formation in membrane fouling.
    • Offers insights for designing and operating UF processes to mitigate fouling and enhance efficiency.