GAS APPLICATION

CO2-injection is used in both, avoidance measures and cleaning cycles:

pH-adjustment of the inlet water prevents scale build-up on the membranes. Depending on further use, CO2 is the acid of choice
A rinse according the CO2-water flush process* cleans spirally wound membranes of organic deposits and particles. Water saturated with CO2 is used as rinsing water. The targeted degassing of CO2 in the spacer channels leads to a significant increase in the rinsing turbulence and causes efficient removal of contamination from the spacers.

Advantages compared to chemical cleaning:

• Very short cleaning time: 5 minutes compared to 8 hours
• Higher cleaning efficiency for the spacers  
• Environment-friendly: the CO2-footprint is reduced up to 75 %
• Existing plants can be retrofitted  
• Low investment and operating costs

MESSER SOLUTION

For membrane processes Messer provides

• Design of pH-adjustement and of the CO2-saturated water preparation   
• CO2-unit with supply tanks, evaporator, metering station and feed hardware
• CO2 supply
• Support from our national and international experts
   

The CO2-water flush process is protected by patents belonging to Vitens and WE Consult (NL) and is marketed under license by RWB Water