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), Vol. 11:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
02 PETROLEUM
INDUSTRIAL WASTES
WATER POLLUTION ABATEMENT
OILS
ACTIVATED CARBON
ADSORPTION
OSMOSIS
PURIFICATION
REFINING
SLUDGES
ULTRAFILTRATION
WASTE OILS
WASTE WATER
WATER POLLUTION
ADSORBENTS
CARBON
DIFFUSION
ELEMENTS
FILTRATION
HYDROGEN COMPOUNDS
LIQUID WASTES
NONMETALS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION
POLLUTION ABATEMENT
PROCESSING
SEPARATION PROCESSES
SORPTION
WASTES
WATER
520200* - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)
424000 - Engineering- Pollution Control Equipment- (1980-1989)
020900 - Petroleum- Environmental Aspects