ro/di problem

carman9941 · 08/30/2006, 12:54 PM

I just changed my ro filter and now I get a 2:1 waste water
I used the same filter as before its a 75 gal per day I am getting 0 tds, but I know that I will go through DI resin alot faster. any ideas and what would be the remedy, all info would help. thanks

AZDesertRat · 08/30/2006, 05:32 PM

You need to readjust your waste flow. If you have an inline capillary type flow restrictor it needs to be trimmed a little. If you have an orfice type you need a new different sized one and if you have an adjustable one you need to open it up a little to get back closer to 4:1.
2:1 won't give you higher TDS or use resin faster but it will shorten the membrane life dramatically since it is not being flushed as well.

08/30/2006, 12:54 PM	#1
carman9941 Premium Member Join Date: May 2006 Location: Cleveland Posts: 705	ro/di problem I just changed my ro filter and now I get a 2:1 waste water I used the same filter as before its a 75 gal per day I am getting 0 tds, but I know that I will go through DI resin alot faster. any ideas and what would be the remedy, all info would help. thanks

08/30/2006, 05:32 PM	#2
AZDesertRat Moved On Join Date: Jan 2002 Location: NW Phoenix Posts: 16,621	You need to readjust your waste flow. If you have an inline capillary type flow restrictor it needs to be trimmed a little. If you have an orfice type you need a new different sized one and if you have an adjustable one you need to open it up a little to get back closer to 4:1. 2:1 won't give you higher TDS or use resin faster but it will shorten the membrane life dramatically since it is not being flushed as well.