Liquid treatment system and method for operating the same

Details Liquid treatment system and method for operating the same Liquid treatment system and method for operating the same

1994-05-05

1995-12-19

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210639, 210651, 210652, B01D 6120

Patent

active

054765919

ABSTRACT:
A treatment system for removing metal ions from liquids. A metal ion-containing liquid (e.g. water or an acidic mining leachate) is first passed through a nanofiltration membrane system to produce a metal ion-rich retentate and a permeate. The retentate may be saved for metal recovery or discarded. To purify the permeate and remove residual metal ions therefrom, it may thereafter be passed through one or more columns containing metal ion-extracting materials. Specifically, the permeate is passed through at least one and preferably multiple columns filled with porous polymer beads having metal ion extracting agents therein (e.g. biomass materials). As a result, purified liquid is produced. When saturated with metal ions, each bead-containing column is successively cleaned with acid solutions.

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Arbiter, N. et al., "Copper hydrometallurgy-evolution and milestones", Mining Engineering, Feb. 1994 (pp. 118-123).

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