Which of the following is the process of removal of permanent hardness of water?
Zeolite process
The Zeolite process, also known as the ion exchange process, uses materials like zeolites (or synthetic resins) that have exchangeable ions, typically sodium ions (Na^+). Comparing the options, the Zeolite process is a widely used and effective method specifically for the removal of permanent hardness (as well as temporary hardness) from water.
Important Questions from Quality of Water
On which scale the turbidity is measured?
Which of the following represents the approximate overflow rate (litres/hours/m2) for the plain sedimentation tank?
Water borne disease Typhoid fever is caused by
Which of the following units is not used to measure turbidity of water?
A hard water would have hardness (in $\text{mg/L}$):
