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 in:	Industrial & engineering chemistry research Vol. 48; no. 21; pp. 9581 - 9589
Main Authors:	Zhu, Aihua, Christofides, Panagiotis D, Cohen, Yoram
Format:	Journal Article
Language:	English
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