Electro Deionization is a latest technology introduced commercially in the middle of 90’s in western part of the world in European and American companies and introduced in India in the beginning of the 21st Century. The EDI is the technology, which involves ion exchange and electrolysis processes – working simultaneously during the operation. Application of EDI is similar to Mixed Bed unit, as a final polisher to RO or DM plant in the Water Generation Unit.

Actually speaking EDI is a replacement to Mixed Bed unit as far operation is concern. The advantage of EDI unit is, it produces the water with the best quality as compare to MB unit, it does not require any regeneration chemicals for regeneration process – resulting in eliminating down time and handling of hazardous chemicals.

Electro Deionization unit works on electrolysis process, requires electrical energy – which is the actual work force to the entire process. The ion exchange resin in the EDI unit is provided as a base material for the removal of residual dissolved solids present in the water. The Resin exchange its functional group with the dissolved ions of the water, like the conventional Mixed Bed unit and thus the water having dissolved impurities are being removed and pure water is produced. The resin has to be regenerated to work further and further and this is done by electrolysis process. The electrolysis is employed in EDI is to dissociate water in to H+ and OH- ion and which regenerate the resin and replaces the dissolved positive and negative ions from the resin – which travels toward the electrodes duce to the electrical charge.



Dylan Welsh Factory

Dosing System

Cabinet R.O-50 to 500 lph

Ultra Filteration