Good day
I need to evaluate the design for a CO2 degassing tower on a water treatment plant. A CO2 degasser, is required to remove CO2 post RO to increase pH. The supplier of the equipment have changed their design from two towers to one. The flow rate is quite variable (20-100m3/h). The air blower is on VFD so can be modulated to match the water flow rate.
The supplier informed me that the tower is now narrower and taller and this mitigates the need for two towers allows a higher flow variability. I understand that the risk was flooding at the lower flows. The slim but tall tower seems to mitigate this. I do know that in design calculations a narrower tower allows higher flow rates.. Can someone please explain why this is the case? Any concerns?
Thank you