Method and apparatus for recovering wash water from pulp and pap

Details Method and apparatus for recovering wash water from pulp and pap Method and apparatus for recovering wash water from pulp and pap

1993-10-13

1995-11-28

Fortuna, Ana M.

Liquid purification or separation

Processes

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

210650, 210651, 210175, 210180, 210770, 210774, 2102572, 162 29, 162261, B01D 6100

Patent

active

054704812

ABSTRACT:
A method and apparatus for recovering wash water from effluent generated by a pulp and paper mill. The method includes filtering at least a portion of the effluent to form a filtrate stream and an organic solids feed stream. The organic solids feed stream is exposed to a temperature and a pressure which are supercritical for water to cause a substantial portion of the organic component to oxidize and form a product stream that, when cooled, includes a gaseous component, an inorganic solids component, and a liquid wash water component. The wash water component is separated from the gaseous and inorganic solids components, thereby recovering wash water.

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