Method for Removing Heavy Metal and Sulfate Ions from Highly Concentrated, Heavy Metal-containing and Strongly Acidic Solutions

The invention relates to a method for removing heavy metal ions from highly concentrated, heavy metal-containing, strongly acidic solutions containing a percentage of sulfate, comprising a bioreactor having sulfate-reducing bacteria, wherein the sulfides produced in the bioreactor from the sulfate-containing solution are fed to a mixing container (MB1), wherein hydrogen sulfide (H2S) present in the mixing container (MB1) is fed by way of a carrier gas to a second mixing container (MB2) to which untreated waste water is fed, wherein a separator (FR4) for the precipitation of metal sulfides is connected downstream of the second mixing container (MB2), wherein substantially pure sulfuric acid (H2SO4) is withdrawn from the precipitation reactor (FR4).

Attached files:


Patents:
WO 2,010,118,730

Inventor(s): DINKEL WALDEMAR [DE]; FRECHEN FRANZ-BERND [DE]

Type of Offer: Sale



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