GAS APPLICATION

To regenerate the ion exchangers, CO₂-saturated water is prepared and pumped through the filter beds. CO₂ dissolved in water partially reacts to bicarbonate (HCO₃-) and protons (H+). The free protons regenerate the cation exchanger, the hydrogen carbonate the anion exchanger. The residual CO₂ is degassed from the rinse water process and used again for preparation of CO₂-saturated water.   

Advantages:

• Simultaneous lowering of hardness, sulphate, chloride and nitrate content in one step to result in favourable drinking water values
• The regeneration only requires carbon dioxide and no additional salts
• Favourable for the corrosion index (Larson index), since not only bicarbonates but also sulphates and chlorides are reduced.
• Low CO₂-consumption and operating costs

MESSER SOLUTION

For the rapid and complete dissolution of CO₂, Messer supplies several widely tested technologies, varying from fine-bubble feed directly into the main water stream to complete dissolution in a side stream under hydraulically defined conditions. In a project we specify the feed method that fits the customer needs regarding local conditions best.