Title: In-line aeration and treatment of acid mine drainage
Description: It describes a process that introduces air into a piped/pump stream of acid mine drainage containing dissolved ferrous iron.  The introduced air oxidizes the ferrous iron to ferric; this facilitates the formation of ferric oxy-hydroxide solid precipitates that will settle out if introduced into quiescient conditions like a settling pond.
Subjects: Acid mine drainage, Air entrainment, Iron, Oxidation, Water, Aeration, Purification