Challenge
In water softening, dissolved substances must be specifically removed and the materials used must be regularly regenerated. At the same time, the use of chemical additives should be minimised as far as possible.

Solution
The use of CO₂ enables the regeneration of ion-exchange materials to be carried out in an environmentally friendly manner. Piston compressors handle the compression and recirculation of the CO₂ and ensure a stable supply throughout the process.

The systems are designed for continuous operation and allow for reliable integration into the water treatment process.

Implementation in Germany
In a water softening plant, the CO₂ produced during desalination is recovered and compressed using a piston compressor. It is then collected in a storage tank and reused in the process.

The plant operates stably in continuous operation and reduces the need for additional regeneration chemicals.

Results

• Reduced use of chemical additives
• Sustainable use of CO₂ in the process
• Stable and reliable plant operation
• Efficient integration into the water treatment process