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