Liquid purification or separation – Constituent mixture variation responsive
Patent
1997-07-11
1998-12-29
Hruskoci, Peter A.
Liquid purification or separation
Constituent mixture variation responsive
210101, 210104, 210143, 2101951, 210202, 210205, C02F 158
Patent
active
058535730
ABSTRACT:
A method and apparatus for the removal of total cyanide from aqueous solution. The method includes the steps of placing the aqueous solution into a reaction tank, adding lime, ferrous sulfate, and acid to the solution in the reaction tank and agitating the resultant mixture for a reaction time of about one hour. The agitated mixture is transferred from the reaction tank to a clarifier tank and polyelectrolyte solution is added to induce iron-cyanide complex precipitate coagulation. The apparatus includes a reaction tank to hold the aqueous solution and a lime slurry tank, ferrous sulfate tank and acid tank in flow communication with the reaction tank. A pH control assembly controls the flow of acid from the acid tank into the reaction tank and a reaction tank agitation assembly extends into the interior of the reaction tank. The clarifier feed conduit extends between the reaction tank and a clarifier tank. The apparatus further includes a means for transporting a solution from the reaction tank to the clarifier tank and a polyelectrolyte tank in flow communication with the clarifier feed conduit.
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Bolo Eugene R.
Reggi John D.
Yablonsky Albert
Hruskoci Peter A.
Ormet Corporation
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