DEGASSING

The presence of certain gases dissolved in water (CO2, O2, H2S, NH3, etc.) can sometimes present drawbacks to its use. Desorption or cold stripping is the technology that consists of extracting the gases dissolved in the water to be treated and converting them to the gaseous phase. To do this, a stripping gas is used, which does not contain the gas to be extracted. Contact between the water to be treated and the entrainment gas takes place in counter-current in a ring-packed column or on a membrane to obtain a large, compact exchange surface.