LOW BORON DESALTED WATER PRODUCTION

摘要

A softener-RO brine unit (F) to be applied in a Reverse Osmosis system for producing low Boron water from sea water. The efficiency of the Reverse Osmosis system is increased by driving the downstream brine through an ion exchange softener (1A) to entrap the Magnesium ions, adding Sodium hydroxide (1Ba) to the Magnesium-free downstream brine to elevate the pH, further treating the resulting brine in a Reverse Osmosis membrane unit and using the high salinity Magnesium-free brine output of the Reverse Osmosis system to regenerate the said ion exchange softener (1A).