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Electrodialysis-based separation process for salt recovery and recycling from waste water

United States Patent

5,645,703
July 8, 1997
View the Complete Patent at the US Patent & Trademark Office
Argonne National Laboratory - Visit the Technology Development and Commercialization Website
A method for recovering salt from a process stream containing organic contaminants is provided, comprising directing the waste stream to a desalting electrodialysis unit so as to create a concentrated and purified salt permeate and an organic contaminants containing stream, and contacting said concentrated salt permeate to a water-splitting electrodialysis unit so as to convert the salt to its corresponding base and acid.
Tsai; Shih-Perng (Naperville, IL)
University of Chicago (Chicago, IL)
08/ 587,452
December 20, 1995
CONTRACTUAL ORIGIN OF THE INVENTION The United States Government has rights in this invention pursuant to Contract No. W-31-109-ENG 38 between the United States Department of Energy and the University of Chicago representing Argonne National Laboratory.