Rowzee On Water Quality: Understanding Ion Exchange Processes
Ions are simply “charged particles.” Most often when we talk about ions, we think of charged particles that are free floating, or dissolved, in a solution. And most of the time we think of water as the solvent for such solutions.
Ions come from natural or manmade salts or minerals that dissolve in water. Since it is easy to visualize granules of table salt dissolving in water, let's use it for discussion.