TM 5-813-8
Figure 7-5. Construction of a tubular reverse osmosis membrane.
waters, whose product water salinity cannot be reduced
7-4.
Reverse
osmosis
membrane
staging
to the required concentration by a single pass through
configurations . Two kinds of membrane staging are
the membrane under consideration. Banking is the term
commonly used in reverse osmosis desalination plants:
usually used for parallel arrangement of a number of
product staging and reject staging. Reject staging is
membrane modules operating from the discharge of a
used to treat waters with low salinity, so that most of the
single pump.
raw feed water will eventually be recovered as product
water. Product staging is used to treat highly saline
7-7
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