System and process for producing animal feed from food waste

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Filing Information

  • Patent Number: US6635297
  • Application Number: US9981261
  • Filing date: 10/16/2001
  • Issue date: 10/21/2003
  • Prior Publication Data:
  • Predicted expiration date: 11/12/2021
  • Patent term adjustment: 27
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  • U.S. Classifications: 426/531  · 426/635  · 426/630  · 426/807  · 426/623  ·
  • International Classifications: --
  • International Classifications: 426531 · 426623 · 426630 · 426635 · 426807 ·
14 Claims, 1 Drawings


Abstract

A process is provided for producing animal feed from food waste by providing a dry, pelletized, fibrous organic material. Specifically, the invention relates to methods of thickening/dewatering solids that contain substantial amounts of moisture, e.g., ground food waste.

References Cited

U.S. Patent Documents

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Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
ES2152810*GARCIA ORTUNO SALVADORSep 2001
* cited by examiner

Referenced By

The current document is not referenced by other documents.

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Independent Claims | See all claims (14)

  1. 1. A process for producing animal feed from food waste, consisting essentially of the steps of: (a) shredding of the food waste, resulting in ground food waste; (b) thickening of the ground food waste through the use of an amount, effective for the purpose, of an agglomerating polymer and a synthetic organic flocculant, resulting in a low moisture product and a separate liquid phase; (c) adding a dry carrier to the thickened ground food waste, followed by extrusion of the thickened ground food waste and evaporation of residual moisture to produce dried food pellets; and (d) treating the liquid phase so as to provide a high purity effluent for recycling.
  2. 8. A process for producing animal feed from food waste, comprising the steps of: (a) shredding of the food waste, resulting in ground food waste; (b) thickening of the ground food waste through the use of an amount, effective for the purpose, of an agglomerating polymer and a synthetic organic flocculant, resulting in a low moisture product and a separate liquid phase; (c) adding a dry carrier to the thickened ground food waste, followed by extrusion of the thickened ground food waste and evaporation of residual moisture to produce dried food pellets; and (d) treating the liquid phase so as to provide a high purity effluent for recycling, wherein the pH of the process is about 8-9.