Membrane degassing allows for the quantitative removal of oxygen and carbon dioxide at ambient temperature. Carbon dioxide is a common issue also in a large number of deionisation and demineralisation plants, as it contributes to the anionic load.
In an ion exchange process, reducing the anionic load implies a reduction of the operating costs because of the lower consumption of caustic soda in the regeneration of the anionic resins. In a reverse osmosis process the CO2 removal reduces the dissolved solids content and specific conductivity.
In the membrane degassing process, water is put in contact with a purge gas stream through a semi-permeable membrane. Whilst water is not able to permeate through the membrane, the dissolved gases are forced to flow through it with the driving force being the low partial pressure in the gas phase. According to the expected performance the purge gas stream could be pure nitrogen, compressed air, vacuum conditions or a combination of them.
Cannon Artes has been qualified by 3M, the world leader in the field of membranes for degassing of liquids, for the implementation of Membrane Degassing in the offshore oil & gas projects.
Cannon Artes is offering its Clients the support to investigate, test, design, manufacture, commissioning and start-up of water treatment systems based upon membrane deaeration.