Process for removing sulfate anions from waste water

Details Process for removing sulfate anions from waste water Process for removing sulfate anions from waste water

1995-04-19

1997-01-14

Spear, Frank

Liquid purification or separation

Processes

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

210643, 210748, B01D 6140

Patent

active

055935931

ABSTRACT:
A liquid emulsion membrane process for removing sulfate anions from waste water is disclosed. The liquid emulsion membrane process includes the steps of: (a) providing a liquid emulsion formed from an aqueous strip solution and an organic phase that contains an extractant capable of removing sulfate anions from waste water; (b) dispersing the liquid emulsion in globule form into a quantity of waste water containing sulfate anions to allow the organic phase in each globule of the emulsion to extract and absorb sulfate anions from the waste water and (c) separating the emulsion including its organic phase and absorbed sulfate anions from the waste water to provide waste water containing substantially no sulfate anions.

REFERENCES:
patent: 5190656 (1993-03-01), Paul et al.

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