Patent ID: 6372145
Filing Date: 2002-04-16
Classification: C02F,Y10S

Abstract:
A method for removing COD created by fat and protein components from an aqueous dairy 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 wherein the aluminate treatment raises said pH from between about 4.5 and 6.5 to between about 5 and 10, and said pH is not reduced below 4.5 prior to treating with said aluminate; adding an anionic flocculating agent to said waste stream 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.