Reverse osmosis system
GENO-OSMO RO 125K
Order no. 285 752 940-inter Edited by: phar-mrie G:\BA-752940-INTER_285_RO_125K.DOCX
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3 | Functional principle of reverse osmosis
Principle:
Pretreated feed
water
Fig. B-1: Functional principle
Concentrate:
Permeate
Osmosis
Osmotic pressure
Reversed osmosis
Solution of high
concentration
Solution of low
concentration
Solution of high
concentration
Solution of low
concentration
Solution of high
concentration
(concentrate)
Solution of low
concentration
(permeate)
Fig. B-2: Reverse osmosis principle
In the osmosis process, watery solutions of different concentrations
are separated by a semi-permeable membrane. In keeping with the
law of nature, the concentrations will tend to equalise. What is
referred to as "osmotic pressure" is generated on the side of the
higher original concentration. In case of reverse osmosis, this osmotic
pressure is countered by a higher pressure. The consequence:
The process runs in the opposite direction. A particular advantage of
the reverse osmosis technology compared to other water treatment
processes is the fact that apart from the removal of dissolved salts,
bacteria, germs, particles, and dissolved organic substances are
also reduced.