The present invention involves a system and method of making ferric chloride
with reduced amounts of hydrochloric acid for water treatment. The method comprises
preparing a reactant batch comprising ferric oxide and hydrochloric acid at a predetermined
molar ratio. The method further includes mixing the reactant batch with an impeller
rotating between about 60 and 150 revolutions per minute. The method further includes
maintaining the reactant batch at a temperature between about 70 Fahrenheit
and 180 Fahrenheit. The method forms a reaction product including ferric
chloride and a reduced amount of hydrochloric acid.