Simpec S.r.l. products

Demineralization is a chemical-physical process of treatment, typically of water (demineralized water), intended for the elimination, in whole or in part, of the salts dissolved in it. Simpec uses two major demineralization systems: ion exchange resin plants and reverse osmosis plants. The obtained water is demineralized, deionized or osmotized. The ions present in the water ensure the conduction of electric current, their elimination decreases conductivity or increases the water resistivity.

Ion exchange resin plants are basically constituted by a cationic resin treatment section and an anionic resin processing section. These resins are provided with active functional groups, anchored to the matrix, capable of exchanging their mobile ions with the same charge ions contained in the solution they come into contact with. Cationic resins eliminate cations and the anionic resins eliminate the anions. Through the use of mixed bed resins (mixtures of cationic and anionic resins), Simpec provides ultrapure demineralized water systems with conductivity less than 0.1 μS / cm.

Reverse osmosis plants take advantage of the physical permeability principle of a membrane to obtain water demineralization. This process is not merely a physical obstacle (determined by the size of the pores of the membrane) to the passage of the molecules, but exploits the different chemical affinity of the species with the membrane, enabling the passage of hydrophilic (or water-like) molecules chemically similar to water. From the point of view of the plant, the method uses the principle of tangential filtration, as well as other membrane separating techniques such as microfiltration, ultrafiltration, nanofiltration and MBR Membrane Bioreactor (see membrane technologies). For ultrapure water production using reverse osmosis plants, Simpec uses double-step reverse osmosis systems combined with continuous electrodeionization units (CEDIs). The continuous electrodeposition CEDI systems combine the use of ion exchange resins with their continuous regeneration by the electric current.

The demineralization is a chemical-physical process, generally applied to the water, destined to totally or partially dissolved salts elimination. Simpec produces two types of demineralization plants: ion exchange resin plants and reverse osmosis plants. The obtained water is called demineralized or deionized. The ions contained in to the water ensure current conduction, their elimination reduces the water conductivity and so it increases water resistivity.