Soft Water and Water Softening Processes – IspatGuru
Three main processes for the external treatment are (i) lime soda process, (ii) Zeolite process or Permutit process, and (iii) ion exchange process. Lime soda process uses slaked lime [Ca(OH)2] and soda ash (Na2CO3) which are added to the water. Lime and soda ash reacts with the calcium and magnesium salts to form insoluble precipitate …
