Ion Exchange Resins

Ion exchange resins are polymers that are capable of exchanging ions with ions in a solution that is passed through them.

They are used to remove dissolved particles from liquids. Therefore, functional groups are bonded to the polymer beads. These functionalized polymers adsorb particular anions or cations from the liquid and discharge others.

While RO Membrane technology is very cost-efficient for water with a high salt content, only ion exchange resins can purify water with low salt concentrations to the point where only trace amounts remain.

 

Lewatit Ion Exchange Resins

MDC Water is one of the main ion exchange resin suppliers in Australia, we only work and import from high quality IX resin manufacturers.

Lewatit resins are manufactured by Lanxess (Germany). Lanxess is a leading global solution provider for water treatment and liquid purification with excellent technical Know-how and customer service. For more than 80 years Lewatit® ion exchange resins and adsorbers are used in numerous industries to treat and purify water and other liquid media.

Main Types

• Pre Mixed Ion Exchange Resins, DI Mixed Bed Resins.
Strong Acid Cation Exchange Resins (SAC), Sotening Resins.
• Weak Acid Cation Exchange Resins (WAC).
• Strong Base Anion Exchange Resins (SBA).
• Weak Base Anion Exchange Resins (WBA).

Main Applications

• Softening, Drinking Water Treatment.
• Demineralisation, Ultrapure Water, Mixed Bed Polishing.

Sugar, Beverage and Food Industry.
Pharmaceutical Industry.
Catalysis and Chemical Industry.

Mixed Bed Resin

Mixed-bed DI Resins are normally used to ‘polish’ the water to higher levels of purity after it has been initially treated by either a two-bed deioniser or a reverse osmosis unit. In mixed bed deionisers the Strong Acid Cation and Strong Base Anion resins are closely mixed and contained in a single pressure vessel.

Our Mix Bed Deionising resins can produce the highest quality of deionised water possible, however, feeding untreated water into a mixed bed unit can be an expensive option and may not produce the water quality required.

In order to obtain the purest quality deionised water, a reverse osmosis system should be used before the water is treated through the Mixed Bed unit. While the reverse osmosis system removes most of the impurities the mixbed resin removes the rest of the ions in the water.

Deionised Water Filtration Systems

We stock a wide range of deionized water systems, DI resin vessels, DI resin filter cartridges and water deionisers.

Softening Resin

It is a strong cation exchange resin supplied in its sodium form, it is normally used to soften hard water. Water hardness is usually calculated as Ca2+ and Mg2+.

Water Softener Resin exchanges the hardness minerals (calcium and magnesium) dissolved in water for sodium. This soft mineral is contained on the softener resin beads and does not build up on surfaces as scale deposits.

The water softener resin is regenerated with a brine solution (salt).

 

Water Softeners

MDC Water offers a wide range of quality water softeners for residentional, commercial and industrial applications.

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