Transverse Clearance for Refreshing Resin and Coal Columns
Water softening using ion exchangers is one of the basic processes for the treatment of water supplied to industry. The process is based on the transfer of piped water through resins saturated with monovalent cation.
As a result, soft water is obtained, which has a relatively low concentration of calcium and magnesium, but is enriched with sodium or potassium.
Refreshing ion exchangers
When the concentration of calcium and magnesium ions adsorbed by the resin increases, these ions should be squeezed out and sodium or potassium ions reabsorbed.
This process is called “ion exchange refreshing”. Refreshing is effected by passing a concentrated solution of table salt (or potassium chloride) through the resin.
In this manner, calcium and magnesium are squeezed out and sodium or potassium is absorbed.
(From the website of the Ministry of Environmental Protection)
Extension of the validity of lateral manager authorization until 01/08/2023