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U.S. Department of Energy
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Pollution control practices/Air flotation treatment of refinery waste water

Journal Article · · Chem. Eng. Prog.; (United States)
OSTI ID:6774791
In pilot plant studies on air flotation systems for installation between the primary API separators and the impounding basin of the waste water treatment train at the Sun Petroleum Products Co. Toledo, Ohio, refinery, an Envirex Inc. dissolved air flotation unit and an Envirotech Corp., Wemco Division, induced air flotation unit performed equally well. The dissolved air flotation unit averaged 82Vertical Bar3< oil removal and 70Vertical Bar3< suspended solids removal, and the induced air flotation unit averaged 81Vertical Bar3< oil removal and 71Vertical Bar3< suspended solids removal. Laboratory bench scale tests showed that low-molecular cationic polyelectrolytes were the most efficient additives for removing oil and suspended solids in both air flotation designs. One high-molecular cationic polymer also worked well in the induced air flotation unit. In pilot plant tests, the amount of additive necessary depended on the contaminant concentration in the water.
Research Organization:
Sun Pet. Prod. Co.
OSTI ID:
6774791
Journal Information:
Chem. Eng. Prog.; (United States), Journal Name: Chem. Eng. Prog.; (United States) Vol. 74:12; ISSN CEPRA
Country of Publication:
United States
Language:
English