Direct Processing of RTD Signals from Conductivity Data in Spiral Wound RO Modules

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概要

• 論文の詳細を見る

• A simple and direct method for processing residence time distribution (RTD) signals from conductivity data was developed for a spiral wound membrane reverse osmosis (RO) system. Two models were tested: axial dispersion (AD) model and exponentially modified Gaussian (EMG) model. The results show that the present method provides a simple, fast and accurate RTD data reduction. The presence of fouling in the small laboratory RO module increased the axial dispersion coefficient, indicating that fouling in the membrane channel augments the axial dispersion extent, thus resulting in the deviation of flow pattern from ideal plug flow. The dead volumes gradually decreased with increasing Reynolds number for the worn industrial module, while there was no dead volume for the new industrial module. As a result, the membrane wearing-out could increase the dead zones in the industrial spiral wound module.

• 社団法人 化学工学会の論文
• 2008-01-01

著者

• YANG Qingfeng

  School of Environmental Science and Engineering, Shanghai Jiao Tong University

• SEMIAT Raphael

  GWRI Rabin Desalination Research Laboratory, Department of Chemical Engineering, Technion-Israel Ins

• Semiat Raphael

  Gwri Rabin Desalination Research Laboratory Department Of Chemical Engineering Technion-israel Insti

• David Hasson

  Gwri Rabin Desalination Research Laboratory Department Of Chemical Engineering Technion-israel Insti

• Hasson David

  Gwri Rabin Desalination Research Laboratory Department Of Chemical Engineering Technion-israel Insti

• Yang Qingfeng

  School Of Environmental Science And Engineering Shanghai Jiao Tong University

• DRAK Alex

  GWRI Rabin Desalination Research Laboratory, Department of Chemical Engineering, Technion-Israel Ins

• Drak Alex

  Gwri Rabin Desalination Research Laboratory Department Of Chemical Engineering Technion-israel Insti

• Semiat Raphael

  Gwri Rabin Desalination Research Laboratory Department Of Chemical Engineering Technion-israel Insti

関連論文

• Scaling Salt Removal by Addition of Inorganic Particles
• Dropwise Condensation on SAM and Electroless Composite Coating Surfaces
• Removal of CaCO_3 Scaling Salt from RO Concentrates by Air-Blow and Inorganic Inducers
• Desupersaturation of RO Concentrates by Addition of Coagulant and Surfactant
• Direct Processing of RTD Signals from Conductivity Data in Spiral Wound RO Modules

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