SFR: softener size, resin volume
i am uncertain about the correct softener size needed.
source: well water. bored at 87', 10+ years old.
condition: iron 4 ppm, this is clear water iron w/o visible particulates. hardness 60 gpg. pH 6.5. total alkalinity 240 ppm. nitrate/nitrite 0 ppm. copper 0 ppm. chlorine 0 ppm. manganese and sulfides are an unknown.
TDS 1001 ppm. measured with DM-1 meter for an RO+DI system setup for another project unrelated to human consumption.
the well will be tested further mid April. we don't drink from it, even though we could.
two people, 1bath, 1 laundry, 1 kitchen w/o dishwasher. a water heater @40 gal. 95% of the time, only one fixture is being used at a time.
30/50 pressure switch @ pressure tank. 3/4" plumbing to existing old culligan softener, and after it until reaching kitchen/bath sinks at 1/2".
an ecowater CWS V, tech tested the water for hardness and iron content. he added to the 60 gpg, 5 gpg for each ppm of iron. bringing it to 80 gpg, then an additional 10 gpg for some reason, i cannot recall. so, at 90 gpg hardness, and 11-12K grains per day, he suggested nothing less than a 40K unit. around $2,400.
after looking around, it seems there is more to the sizing than capacity. the SFR of resin volume correctly matched to capacity is the goal to reach for if looking for efficiency.
if using 6lbs. of salt per cu.foot of resin..how much resin should be used?
i understand two things. too much water into a pile of resin, can cause channeling or leaking, and these effects lead to waste.
i don't understand how to figure for the SFR of resin, and meet water conditioning needs.
apologies for the length of this post. i'll ask the ecowater tech more questions. in the meantime it seems like a good idea to ask for help here.
This post was edited by AL77 on Thu, Mar 28, 13 at 12:52