Wide experience includes several alternative processes available to produce desalinated or demineralized water: Desalination and Demineralization
Reverse Osmosis (RO) is a water purification process that uses semi permeable membrane to demineralize or deionize water by pushing it under pressure. The applied pressure, greater than the osmosis pressure, allows the pure water passage through the semi permeable membrane while holding back many contaminants.
Ion Exchange is a process of water purification using polymeric ion-exchange resin. There are mainly two types of Ion exchangers: cation exchangers or anion exchangers. Depending on the process and the water characteristics the ion-exchange resins (both cation and anion) can be strong and/or weak. Ion exchange is a reversible process, that means that the resin can be regenerated by washing with acid or basic solutions containing excess ions necessary to restore the functionality of the ion exchanger.
The Mixed Bed consist of both anionic and cationic resin and in demineralization plants provides the final removal of TDS especially Silica. With references for multiple mixed bed packages, with capacities up to 700 m3/h.
Electro Deionization (EDI) is a water treatment technology that utilizes a combination of electricity, ion-exchange membranes and ion -exchange resin to separate dissolved ions from water. The ion-selective membranes allow the positive ions to separate from the water toward the negative electrode and the negative ions toward the positive electrode. This deionization technology does not involve the use of chemicals.