Process for the purification of waste wash water

Details Process for the purification of waste wash water Process for the purification of waste wash water

1998-07-06

1999-11-09

Cintins, Ivars

Liquid purification or separation

Processes

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

210669, 210670, 210688, C02F 900

Patent

active

059807504

ABSTRACT:
An improved apparatus and method for the purification of waste wash water derived from the production of aromatic acids. Lost aromatic acid product and the heavy metal oxidation catalyst is recovered and purified water is recycled to the process. The process includes the steps of filtration to recover the insoluble aromatic acid, ion exchange to recover and purify the heavy metal oxidation catalyst, and a reverse osmosis system for recovering the water for reuse.

REFERENCES:
patent: 3870033 (1975-03-01), Faylor et al.
patent: 4540493 (1985-09-01), Dickerson et al.
patent: 5017291 (1991-05-01), Semler et al.
patent: 5061374 (1991-10-01), Lewis
patent: 5470481 (1995-11-01), Modell et al.

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