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U.S. Department of Energy
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Process for removing oil from oily waste water streams

Patent ·
OSTI ID:6414219

An improved process for removing oil from oily waste water streams, particularly from aqueous refinery streams wherein the oil is present as a stable oil-in-water emulsion, which comprises passing the stream through a filter bed of particulate, unprocessed pvc or its copolymers mixed with a granular, inert and preferably porous filler material such as particles of coke or carbon. The improvement substantially increases bed life and has unexpectedly resulted in higher oil-absorption capacity of the filter bed.

Assignee:
Exxon Research And Engineering Co
Patent Number(s):
US 4248705
OSTI ID:
6414219
Country of Publication:
United States
Language:
English