Single-pass desalination of high salinity sea water with reverse osmosis
1981
Abstract Two types of new “HOLLOSEP” have been developed for single-pass desalination of high salinity seawater. One is a high pressure and high temperature module, type “HPT”. The performance of this new type HOLLOSEP is analyzed in the case of desalination of high salinity seawater under a high pressure Of 75Kg/cm 2 G at high temperature of 40°C. It has been found that the operation costs can be reduced by this high pressure and high temperature operation system. The other is a large size module containing five elements of 12 inches diameter, type “JM-12”. This module has been developed to reduce the water cost by enlarging the diameter and the length of a vessel coupled with the improvement in water flux rate of the hollow fiber membranes. The fresh water productivity of this module is 150m 3 /day under the conditions of 3.5% NaCl feed water, 30% product water recovery at 55kg/cm 2 G.
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