Process for removing organic and inorganic contaminants from ref

Details Process for removing organic and inorganic contaminants from ref Process for removing organic and inorganic contaminants from ref

1998-07-21

2000-04-25

Drodge, Joseph W.

Liquid purification or separation

Processes

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

210641, 210650, 210652, 210669, 210774, 210791, 210806, B01D 6158

Patent

active

060540508

ABSTRACT:
A process for removing soluble and insoluble organic and inorganic contaminants from refinery wastewater streams employing ultrafiltration and reverse osmosis is provided. Permeate from the ultrafiltration step is first passed through a sequential softening system to remove divalent and trivalent metal cations prior to being passed to the reverse osmosis step to prevent fouling therein.

REFERENCES:
patent: 5174901 (1992-12-01), Smith
patent: 5227071 (1993-07-01), Torline et al.
patent: 5250185 (1993-10-01), Tao et al.
patent: 5376262 (1994-12-01), Perry
patent: 5558775 (1996-09-01), Busch
patent: 5783084 (1998-07-01), Suenkonis
patent: 5807486 (1998-09-01), Busch

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