Salt free water softener
A water softener is a filtration system that reduces minerals that causes hard water. Calcium, iron and magnesium concentrations, which are problematic, are particularly common in well water, though some public water systems provide hard water.
By filtering hard water through salt, the metals are removed by bonding with salt, which acts like a sponge.
The idea behind a water softener is simple. The calcium and magnesium ions in the water are replaced with sodium ions. Since sodium does not precipitate out in pipes or react badly with soap, both of the problems of hard water are eliminated. To do the ion replacement, the water in the house runs through a bed of small plastic beads or through a chemical matrix called zeolite. The beads or zeolite are covered with sodium ions.
As the water flows past the sodium ions, they swap places with the calcium and magnesium ions. Eventually, the beads or zeolite contain nothing but calcium and magnesium and no sodium, and at this point they stop softening the water. It is then time to regenerate the beads or zeolite.
The solution to hard water is either to filter the water by distillation or reverse osmosis to remove the calcium and magnesium, or to use a water softener. Filtration would be extremely expensive to use for all the water in a house, so a water softener is usually a less costly solution.
Salt type water softeners add sodium to the water. This can be problematic for people with blood pressure issues and generally, we get too much sodium in our diet anyway. By using salt free water softener we can get a better healthy life.