Several parameters are known to influence the passage of salts through a
reverse osmosis membrane. These parameters include characteristics of both
the membrane and the feed water. Of these parameters, the least understood is
the effect feed water concentration has on salt passage. At high and very low
feed salinities, salt passage can increase by a factor of two or more. As an
increasing number of reverse osmosis (RO) systems are designed to treat water at these salinity
extremes, a better understanding of this salinity effect is necessary to accurately
predict the permeate quality of these systems.
This study demonstrates and characterizs the salinity effect on different
RO elements treating different feed waters. The magnitude of the salinity effect
at any given feed salinity is shown to be influenced by membrane charge and
feed water composition. The results of the study on individual elements are used
to accurately predict the salt passage in an existing full scale RO system. Includes table, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 340 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 12 |
| Published : | 03/01/2005 |
