Treatment process for recovering components of a float material from waste water
AssigneeNovus International, Inc.
InventorsMatthew B. Hopkins, Robert J. DeRosa, William D. Shermer
Life of this patent
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Abstract
A treatment process for recovering protein, fatty and water component products from a float material produced by a waste water treatment system, wherein the protein and fatty components possess improved stability and are suitable for further processing for inclusion in various products, such as animal feed. The recovered water component can also be further processed before discharge into a sewer system.
Claims60
A process for the treatment of a float material comprising a protein component, a fatty component and a water component, the process comprising:
- forming a hot treatment mixture by mixing a carrier material and the float material, the mixture having a solids content ranging from about 2 to about 20 weight percent, the mixture being heated to a temperature sufficient to liquefy fats, oils and greases which are present;
- adding a flocculating agent to the hot treatment mixture to form a flocculated mixture;
- and, separating the flocculated mixture into a protein product, a fatty product and a water product.
A process for the recovery of a protein product and a fatty product from waste water comprising a protein component, a fatty component and a water component, the process comprising:
- aerating said waste water in a flotation zone in the presence of a flocculating agent to produce a float material at an upper surface of an underlying waste water phase, said float material comprising said protein component, fatty component and water component;
- separating said float material from the underlying waste water phase;
- forming a stabilized mixture comprising said float material and an antioxidant;
- forming a treatment mixture comprising said stabilized mixture and a carrier material, said treatment mixture being heated to a temperature of less than about 99.degree. C.;
- and,
- separating the treatment mixture into a protein product, a fatty product and a water product.
A process for the treatment of a float material composing a protein component, a fatty component and a water component, the process comprising:
- forming a hot treatment mixture by mixing a carrier material and the float material, the temperature of said hot mixture ranging from about 77.degree. C. to about 93.degree. C.;
- and,
- separating the hot mixture into a protein component product, a fatty component product and a water component product, wherein separating the hot mixture is achieved by feeding the hot mixture onto a belt filter, said belt filter comprising a non-corroding, non-deforming mesh belt.
A process for the treatment of a float material comprising a protein component, a fatty component and a water component, the process comprising:
- forming a treatment mixture by mixing a carrier material and the float material, the treatment mixture being heated to a temperature which is sufficient to liquefy fats, oils and greases which are present;
- passing the treatment mixture through a plug flow reactor;
- and, separating the flocculated mixture into a protein product, a fatty product and a water product.
Dependencies are inferred from the claim text.