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US 2002/0100731 A1Published application
Fat and protein removal from process streams
AssigneePower Engineering Company
InventorsBryon J. Tarbet, Robert D. Hancock, Jeffrey W. Zidek
Life of this patent
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Abstract
The precipitation and removal of suspended fat and protein components and other suspended solids from a given solution can be accomplished by the addition of an aluminate to complex with the fat and protein components and the addition of a flocculating agent to flocculate the aluminate/fat and protein component complexes into insoluble particles capable of removal by conventional technology, which insoluble particles can be rendered to produce tallow.
Claims9
A method for removing COD created by fat and protein components from an aqueous waste stream, said method comprising:
- adjusting said waste stream to a pH of between about 4.5 and 6.5;
- treating said waste stream with an aluminate, said aluminate treatment raises said solution pH from between about 4.5 and 6.5 to between about 5 and 10 and said pH is not reduced below about 4.5 prior to treating with said aluminate;
- adding an anionic flocculating agent to said aqueous solution in order to form a plurality of insoluble flocculate particles which contain said fat and protein components;
- and
- removing said COD by separating at least a portion of said insoluble flocculate particles from said aqueous waste stream.
2 more elements
Dependencies are inferred from the claim text.