How much resin for hard water?

by Niri

How many litres of water of hardness about 200 can be softened with one litre of resin?

Comments for
How much resin for hard water?

Average Rating starstarstarstarstar

Click here to add your own comments

Jun 03, 2012
Rating
starstarstarstarstar
Temporary or Permanent NEW
by: Mark

I have about 350 ppm temporary or carbonate hardness. Which approaches/systems are optimal for this chemistry?

Nov 20, 2010
Rating
starstarstarstarstar
Resin Amount
by: Matt Ulrich - Clear Water Concepts

Niri, water softening resin is available in cubic feet or grains. Typically a bag of resin is 32,000 grains or 1.0 cubic feet. 32,000grains/1.0 cf of water softener resin can clean 32,000 grains of hardness before it has to regenerate with sodium or potassium chloride. I assume that your 200 hardness is referring to 200 ppm of hardness? In this case, divide 200 ppm hardness by 17.1 to get the grains. This would be 200/17.1=11.69 grains per gallon hardness.
32,000/1.0cf of resin would clean approximately 2,737 gallons of water with this hardness. 32,000/11.69=2,737 gallons cleaned.

Matt Ulrich
Clear Water Concepts
Mesa, AZ

Click here to add your own comments

Join in and write your own page! It's easy to do. How?
Simply click here to return to Q&A


Return to the Home Water Purification Systems menu