Journal of Engineering / 2017 / Article / Tab 1

Research Article

Membrane Fouling and Chemical Cleaning in Three Full-Scale Reverse Osmosis Plants Producing Demineralized Water

Table 1

Specification and operational history of the membrane elements used in this study.

LocationLocation I
Sas van Gent, Netherlands
Location II
Dordrecht, Netherlands
Location III
Veendam, Netherlands

Feed waterSecondary waste water effluentRiver waterSurface water
Membrane elementDOW FILMTEC BW30XFR-400/34iDOW FILMTEC LE-440iDOW FILMTEC LE-440i
Membrane configuration & typeSpiral wound thin-film compositeSpiral wound thin-film compositeSpiral wound thin-film composite
Spacer thickness [mil/µm]34/86428/71128/711
Active membrane area [m2]374141
CIP frequency [per year]~17 per year~17 per year~7 per year
Days of operation [elements]10561057
Days since last CIP1520

1 mil = 0.001 inch = 25.4 µm. From this installation, two membrane elements were autopsied, one before last full-scale CIP and one after last full-scale CIP.

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