Industrial Water Deionisation, Demineralisation & Ion Exchange
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Also known as ion exchange or de-mineralisation, deionisation has been used in commercial settings for over 50 years. This well-known and proven technology uses cation and anion ion exchange resins to remove total dissolved solids (TDS) from the water.
This technology has many applications and can be configured in many different formats to achieve 50 µS/cm to 0.055 µS/cm in water purity (0.02 to 18.2 MΩ-cm reciprocal).
Contact us and ask our experts about the IONMASTER range if you believe that industrial water deionisation is what you do require.
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HOW DEIONISATION WORKS
The deionisation process uses cation and anion ion exchange resin beds to remove contaminants from water. Ions are attracted to the resin, becoming trapped on its surface and effectively removed from the water. The impurities are replaced by hydrogen (H+) and hydroxide (OH-) ions which are exchanged from the resins.
RESIN BED TYPES
There are many types of resins available for use in deionisation systems: single-use and rechargeable.
Single-use resins will expire after the resin has reached its capacity for contaminants, which cannot be cleaned from the surface.
Rechargeable resin can be used time and again. Regenerating the resin involves mobilising target contaminant ions by passing a regenerant solution over the resin. Acid, base or salt can also be involved in the regeneration process.
SELECTIVE ION EXCHANGE
Chilate resins are used for the removal of heavy metals. This is particularly effective in industrial effluent situations where heavy metals must be removed to bring the effluent into outfall compliance levels.
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ADVANTAGES AND DISADVANTAGES
The industrial water deionisation process is an advantage because it wastes less water and has a lower capital cost than reverse osmosis. As stated previously, automatic ion exchange processes can be configured in many different formats to achieve 50 µS/cm to 0.055 µS/cm in water purity (0.02 to 18.2 MΩ-cm reciprocal).
The potential disadvantages of industrial water deionisation are the use and discharge of chemicals and the downtime of regenerations.
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IS DEIONISATION RIGHT FOR YOU?
Not sure if industrial water deionisation is the best fit for your application? We understand the challenges of choosing the correct system.
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