Back to results
US 4,612,125 AGranted
Method for removing heavy metal from wastewater streams
AssigneeCX/Oxytech, Inc.
InventorGeraldine S. Elfline
Life of this patent
Estimating the term…
Abstract
A method for removing heavy metals from wastewater streams removes such heavy metal by treating heavy metal-containing wastewater with a water soluble tri-thio carbonate, particularly an alkali metal tri-thio carbonate, such as sodium tri-thio carbonate (Na.sub.2 CS.sub.3) to precipitate heavy metals therefrom.
Claims4
A method of treating a heavy metal-bearing wastewater to remove a substantial portion of the heavy metal therefrom without substantial sludge formation comprising:
- contacting said wastewater with a water soluble tri-thio carbonate in an amount sufficient to react with said heavy metal and cause precipitation of a substantial portion of the heavy metals in the wastewater, and separating the percipitate from the wastewater.
Dependencies are inferred from the claim text.