Practical experience of backwashing with SWRO permeate for UF fouling control

Sheng Li Delft University of Technology, P.O. Box 5048, 2600 GA, Delft, The Netherlands Phone: Tel. +31(0)152784282; Water Desalination and Reuse Research Center, 4700 King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi ArabiaCorrespondence[email protected]

S.G.J. Heijman Delft University of Technology, P.O. Box 5048, 2600 GA, Delft, The Netherlands Phone: Tel. +31(0)152784282

J.Q.J.C. Verberk Delft University of Technology, P.O. Box 5048, 2600 GA, Delft, The Netherlands Phone: Tel. +31(0)152784282

G.L. Amy Delft University of Technology, P.O. Box 5048, 2600 GA, Delft, The Netherlands Phone: Tel. +31(0)152784282; Water Desalination and Reuse Research Center, 4700 King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia

J.C. van Dijk Delft University of Technology, P.O. Box 5048, 2600 GA, Delft, The Netherlands Phone: Tel. +31(0)152784282

Abstract

Effectiveness of seawater reverse osmosis (SWRO) permeate backwash on fouling control of seawater ultrafiltration was investigated at a pilot scale. A standard membrane module was used in this pilot to represent full-scale desalination plants. Results of the pilot show a good reproducibility. When the UF permeate was used for backwash, the frequency of chemically enhanced backwash (CEB) was around once per day. However, results of the pilot show that SWRO permeate backwashing could significantly reduce the CEB frequency.

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Acknowledgement

This research was funded by Senter Novem in the framework of the Innowator grants. Norit X-Flow B.V., the membrane manufacturer, the Netherlands, is gratefully acknowledged for providing UFC M5 0.8 membrane fibers. Evides. B.V. and Hatenboer-water B.V. are appreciated for the cooperation in the DEMIFLUSH project as well.

Notes

Presented at the International Conference on Desalination for the Environment, Clean Water and Energy, European Desalination Society, 23–26 April 2012, Barcelona, Spain

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Practical experience of backwashing with SWRO permeate for UF fouling control

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