DeGaS

For water treatment and purification, Centec offers various technologies designed according to the raw water quality and the specific requirements of the application. Our core competences comprise particle filtration, ion exchange, reverse osmosis, disinfection as well as innovative processes for water deaeration based on membranes and columns. The Centec column deaeration system DeGaS is a modular skid for removing oxygen from water at ambient temperature. For treatment in DeGaS, the liquid is injected at the top of the column. The column contains a matrix of structured packing comprising thin corrugated metal plates arranged so that the liquid takes multiple paths as it flows downwards through the column. This maximizes the transfer surface and the contact time between the liquid and the strip gas; CO₂ or N₂ may be used. The strip gas is fed into the bottom and flows upwards inside the column. The large partial pressure difference of O₂ forces the oxygen out of the liquid into the gas phase. This fundamental scientific principle is described by “Henry’s Law”. At the top of the column the removed O₂ leaves the system together with the undissolved CO₂ or N₂. For simultaneous disinfection of the water during deaeration, DeGaS can be equipped with a heat exchanger to heat the water to approx. 75°C. For manufacturing “still” beverages, DeGaS is typically operated with vacuum instead of strip gas.