Minimum flowrate in IX water softening to prevent channeling

[PEDARRIN2]

I am looking for a guideline minimum flow rate of water through a ion exchange water softener which will prevent channeling.

I have seen the guideline of 1 gpm per ft3 of resin - but want some verification.

The application is for individual facilities, not central utility treatment, if that makes a difference.

 

[bimr]

That is a good number. Rohm & Hass is stating 0.6 gpm per ft3 of resin.

http://www.wallner-wasser.at/de/downloads/Amberlite_IR_120_H.pdf

 

[GarySCWSVI]

1 gpm per cubic foot of resin is a better number than the RH suggestion. Our recommendation is 8 - 40 BV/h. 1 gpm/ft3.

Gary Schreiber, CWS VI
The Purolite Co.