Techniques for removing oil and grease from industrial wastewater
The ease of treatment of animal or vegetable greases or oils compared with those found in petrochemical processing wastes; the concentration ranges of greases and oil found in various wastewaters, e.g., 100 to 1000 mg/l in petroleum refinery wastewaters; physical treatment by gravity separation, dissolved air flotation, and gas flotation; free-floating oil and emulsions; chemical treatment of emulsions by the addition of acid to break the emulsion, coagulation with a neutralizing agent, e.g., lime, followed by final separation, e.g., by gravity settling; membrane processes for the removal of emulsified oils, e.g., ultrafiltration and reverse osmosis; biological treatment; chemical treatment followed by activated carbon adsorption as an alternative to biological treatment; and disposal of waste oil and sludges are discussed.
- OSTI ID:
- 6293115
- Journal Information:
- Pollut. Eng.; (United States), Journal Name: Pollut. Eng.; (United States) Vol. 11:2; ISSN PLENB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020900 -- Petroleum-- Environmental Aspects
42 ENGINEERING
424000 -- Engineering-- Pollution Control Equipment-- (1980-1989)
520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACTIVATED CARBON
ADSORBENTS
ADSORPTION
CARBON
DIFFUSION
ELEMENTS
FILTRATION
HYDROGEN COMPOUNDS
INDUSTRIAL WASTES
LIQUID WASTES
NONMETALS
OILS
ORGANIC COMPOUNDS
OSMOSIS
OTHER ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION
POLLUTION ABATEMENT
PROCESSING
PURIFICATION
REFINING
SEPARATION PROCESSES
SLUDGES
SORPTION
ULTRAFILTRATION
WASTE OILS
WASTE WATER
WASTES
WATER
WATER POLLUTION
WATER POLLUTION ABATEMENT