Article | REF: J2784 V2

Ion Exchange – Operation technologies

Author: François de DARDEL

Publication date: June 10, 2016, Review date: September 14, 2020

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1. Industrial implementation of ion exchange

In industrial use, the solution to be treated percolates through the ion exchange resin placed in an exchange column, colloquially known as a canister. In most cases, the exhausted resin is regenerated and rinsed before it can be used again. This is known as the exchange cycle.

1.1 Description of a complete cycle

The cycle is divided into several phases:

  • saturation (or production) ;

  • Lifting;

  • regeneration ;

  • rinsing.

Figure 1 shows these four stages in schematic form.

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Industrial implementation of ion exchange