We are softening Water at ...
Published by Ole Larsen, Sales Director at DHI
We are softening Water at some of our Waterworks in Denmark, Using the pellet method (adding NaOH to precipitate CaCO3 on sand grains and adjusting the pH with carbonic acid). Overall, we believe it is cheaper to soften the Water before delivery (at the waterwork) rather than removing carbonate deposits at consumer level (large consumption of Chemicals, detergents increasing treatment costs and more rapid weardown of applicances like laundry machines).
The method has been used in N. Europe the past 30 years.