Mixed Bed Demineralizer
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A mixed bed demineralizer is a water demineralizer in which the cation and anion resin beads are mixed together. In effect, it is equivalent to a number of two-step demineralizers in series. In a mixed bed demineralizer, more impurities are replaced by hydrogen and hydroxyl ions, and the water that is produced is extremely pure. The conductivity of this water can often be less than 0.06 microns per centimeter.
Ion Exchange can be defined as a reversible exchange of ions between a solid (resin) and a liquid containing dissolved ions. Mineral salts are comprised of cations and anions. Since demineralizer requires the removal of all ions, both the negatively charged anions and positively charged cations, minerals capable of attracting both are required. These materials are known as anion and cation exchange resins.
Demineralizer are fixed bed systems in which ion exchange resins are contained in pressure vessels. The water is then forced through the resin. After a service run, the resin becomes exhausted and unable to remove additional ions so it must be regenerated with strong acid and base solutions to restore its ion exchange capacity.
Application:
Paint
Chemicals
Electronics
Textiles
Plating
Electro deposition
Printing
Testing and materials
Research and development
Glassware rinse
Hospitals/Medical facilities
Vehicle washes
Film processing
Ice plants
Horticulture/Greenhouse
Food/Beverage processing
Cosmetics
Metalworking lubricants
Glass/Mirror
Boiler feed
Humidification control
...more