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The ion exchange process allows the selective extraction of salts from water: softening, decarbonation, demineralization. nce correctly prefiltered, the raw water feeds under pressure the ion exchange line which may include the following units: Cation exchanger, Gas remover, Anion exchanger(s), Polishing ion exchanger.

Reverse osmosis is a separative process allowing the extraction of pure water from a salt solution by diffusion through a thick film membrane. A pretreatment is necessary to avoid fouling phenomena due to suspended solids or chemical scaling. That pretreatment includes two stages: fine filtration and softening or chemical treatment of the water to be deionized. The water then feeds the reverse osmosis unit at a pressure of about 16 to 20 bars to produce 75 % demineralized water and 25 % brine that will be rejected into the natural environment without any special treatment. A deionized water buffer storage tank will allow the optimization of the reverse osmosis unit size and its daily working time.

Reduce the loss of chemical product by an efficient management of the processing baths and by the installation of recovery techniques: electrolysis,, ultrafiltration, electrodialysis, vacuum evaporation, evapo-concentration, extraction by solvent.