How should the ion exchange resins be prepared before their first use?

It is recommended to soak ion exchange resins in demineralised water overnight before placing the ion exchange resins in service. This is especially important for anion exchange resins to make sure they are fully hydrated and for inert resin to reduce their hydrophobicity. This operation is used to minimize the floating and potential loss of…

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When to replace the resins or keep regenerating the “existing” resins ?

A generic or universal statement cannot be made. It’s related to the factors of regenerant chemicals consumption,  the water quality and the cost of waste stream disposal/limitation. Some ion exchange plant managers would consider a capacity loss of 10-20% sufficiently high to justify the total resin replacement but all plants are different in terms of…

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