4e3eafac_ell_Water_Treatment_Strategies__What_it_does
[Treatment process] Aeration (air stripping) [Contaminants Removed/Altered] Radon, volatile organics, can raise pH, hydrogen sulfide [What it does] 
By forcing high volumes of air through water, dissolved gases and other volatile compounds are liberated and vented away. (example:if you aerated carbonated soda, it would become very flat)
Well Water Treatment Strategies
What it does