Membrane deaerators

For removal of dissolved carbon dioxide and oxygen from water

Membrane deaerators are used to remove dissolved carbon dioxide and oxygen from water. Free carbon dioxide, for example, causes a clear increase in the conductivity of water, a key parameter for totally demineralised water.

Water treatment plants using reverse osmosis and electrodeionisation (EDI) require a reduction of the carbon dioxide in the water by membrane degasification.

Membrane degasification is a membrane diffusion process in which hydrophobic porous membranes are used, which are waterproof, but allow gases to pass through unimpeded. The hollow fibre modules used have a very high packing density. Because of the partial pressure gradient, generated by a purge gas (air or nitrogen) or a vacuum, if necessary, the dissolved gas diffuses through the membrane and out of the water. The water, on the other hand, is retained by the membrane.

EnviroFALK membrane deaerators are available

  • in various sizes,
  • flow capacities and materials
EnviroFALK Membrane deaerator. Exemplary picture.
EnviroFALK Membrane deaerator. Exemplary picture.