Membrane Desalination

Membrane Desalination via Reverse Osmosis (RO) is becoming one of the most widely used solution. It is particularly suited in countries under water stress and with limited energy resources. 

Over the years, SIDEM, as part of Veolia Water Technologies (VWT) has gained unrivaled expertise – and moved into the leading position – in the use of membrane technology, with 6.75 million cubic meters of desalinated water produced per day. 

Find out the desalination technologies that we can offer

SIDEM benefits from Veolia Water Technologies expertise : 1,950 reverse osmosis facilities were installed by VWT within the scope of projects of all sizes and all complexity levels.

Membrane desalination is based on the principle of reverse osmosis. It consists in pushing water under high pressure through semi-permeable membranes, in order to obtain osmotic equilibrium. The salts and other impurities are retained on the side of the saltwater supply. RO is efficient for low or high concentrations of salts and can thus be used to treat brackish water as well as seawater. The saline solution to be treated is separated into two phases: the permeate (freshwater free of salts and impurities) and the concentrate stream (brine enriched with the dissolved salts retained).

Main RO references of the past 10 years