Energy Consumption Optimization of Reverse Osmosis Membrane Water Desalination Subject to Feed Salinity Fluctuation

We study the energy consumption optimization of a reverse osmosis water desalination process producing a constant permeate flow in the presence of feed concentration fluctuation. We propose a time-varying optimal operation strategy that can significantly reduce the specific energy consumption compar...

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Bibliographic Details
Published inIndustrial & engineering chemistry research Vol. 48; no. 21; pp. 9581 - 9589
Main Authors Zhu, Aihua, Christofides, Panagiotis D, Cohen, Yoram
Format Journal Article
LanguageEnglish
Published Washington, DC American Chemical Society 04.11.2009
Subjects
Applied sciences
Chemical engineering
Drinking water and swimming-pool water. Desalination
Exact sciences and technology
Membrane separation (reverse osmosis, dialysis...)
Pollution
Process Design and Control
Water treatment and pollution
Membrane separation
Energy consumption
Reverse osmosis
Desalination
Optimization
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Summary:We study the energy consumption optimization of a reverse osmosis water desalination process producing a constant permeate flow in the presence of feed concentration fluctuation. We propose a time-varying optimal operation strategy that can significantly reduce the specific energy consumption compared to time-invariant process operation. We present both computational and experimental results that demonstrate the effectiveness of the proposed optimal operation policy.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie900729x