DeGaS-Cold is a column degassing system for removing dissolved oxygen (O₂) from water – designed for use at ambient temperature . The goal is virtually oxygen-free water for stable product quality and reproducible processes . The O₂ content is continuously monitored.
 

 
 Application
 
 Dissolved oxygen negatively affects flavor stability and shelf life . DeGaS-Cold removes O₂ from water used in the production of:
 
 
 
 Beer
 
 
 Beer-based mixed drinks
 
 
 is used.
 

 
 Description / Operating principle
 
 This is how column degassing works in the process:
 
 
 
 The water is distributed in the upper part of the column .
 
 
 In the column, tightly packed, thin stainless steel sheets ensure that the water takes many paths as it flows away.
 
 
 This maximizes the exchange surface area and contact time between water and stripping gas.
 
 
 
 Strip gas ( CO₂ or N₂ ) is fed in at the bottom of the column and rises in countercurrent to the water.
 
 
 The large partial pressure difference of O₂ drives the oxygen out of the water into the gas phase (Henry's Law) .
 
 
 At the top, the removed oxygen leaves the system along with undissolved CO₂ or N₂ as a gas.
 
 
 The almost oxygen-free water is collected at the bottom of the column.
 
 

 
 Optional operation (depending on the version)
 
 To increase performance and to avoid carbonation or nitrogenation of the water, DeGaS-Cold can optionally be used:
 
 
 
 operate under vacuum
 
 
 and work entirely without stripping gas
 
 
 This can reduce investment and operating costs .
 

 
 Process control (Inline O₂)
 
 The O₂ content of the degassed water is constantly monitored. For this purpose, the system is equipped with a highly accurate optical OXYTRANS sensor from Centec.
 

 
 Further use of the degassed water (optional)
 
 The degassed water can optionally be used for further purposes:
 
 
 
 be cooled
 
 
 be disinfected with UV light
 
 
 additionally carbonized
 
 

 
 Highlights
 
 
 
 High-precision OXYTRANS sensor for process control
 
 
 Operation under vacuum and without stripping gas possible
 
 
 Customized modular design with standard PLC
 
 
 Frame-mounted for easy installation and commissioning
 
 
 Hygienic design and full CIP capability
 
 

 
 Technical specifications (typical)
 
 Capacity: 10 - 2,000 hl/h
 
 Residual oxygen: 100 ppb - < 10 ppb (lower on request)
 
 Material: as required (plastic, 1.4301/AISI 304, 1.4404/AISI 316L, …)
 

 
 Options (depending on the version / project-specific)
 
 
 
 Double column design for lower height
 
 
 different levels of automation
 
 
 Remote maintenance access
 
 
 in-line O₂/CO₂ measurement
 
 
 Carbonization
 
 
 disinfection
 
 
 cooling
 
 

 
 contact
 
 For project-specific design, integration and a quote, please use the contact form below.
 

 
 Modular design & extensions
 
 DGS – Membrane water degassing
 
 DeGaS-Hot – Column water degassing (hot)
 
 OXYTRANS TR – O₂ measurement (optical; in-line)
 
 Carbonator – Carbonization
 
 Sensors & Measurement Technology