System for the treating biomaterial waste streams

• US 20070175825A1
• Filed: 05/16/2005
• Published: 08/02/2007
• Est. Priority Date: 05/18/2004
• Status: Abandoned Application

• Current Assignee: Biomass Processing Technology Incorporated (Chevron Corp.)
• Original Assignee: Biomass Processing Technology Incorporated (Chevron Corp.)
• Inventors: Denney, Larry
• Application Number:
  US11/596,690
• Publication Number:
  US 20070175825A1
• Time in Patent Office: Days
• US Class Current: 210/631
• CPC Class Codes: C02F 2103/20 from animal husbandry
• CPC Class Codes: C02F 2103/327 from processes relating to the production of dairy products
• CPC Class Codes: C02F 3/34 characterised by the microorganisms used
• CPC Class Codes: C02F 3/342 characterised by the enzymes used

Abstract

A process for treating a biomaterial waste stream is described. The process may form part of a waste fermentation system. The treating process can degrade at least a portion of the biomaterial waste stream into other components or materials. These other components or materials may be reintroduced into a fermentation process as a nutrient for a fermenting organism.

Claims

1-45. -45. (canceled)

46. A process for treating a biomaterial waste stream comprising swine waste, the process comprising the steps of:

providing the biomaterial waste stream comprising swine waste, and passing said swine waste through a chopping pump, or analog thereof;

separating one or more solid components from the biomaterial waste stream to provide a treated biomaterial waste stream;

hydrolyzing at least a portion of the one or more solid components with an acid;

enzymatically degrading at least a portion of the one or more solid components to prepare a liquid extract; and

returning the liquid extract to the treated biomaterial waste stream.

47. The process of claim 46 wherein the separating step includes separating solid components comprising a biomaterial selected from the group consisting of undigested grain and partially digested grain, and combinations thereof.

48. The process of claim 46 wherein the degrading step includes contacting the one or more solid components with an acid capable of hydrolyzing celluloses, hemicelluloses, polysaccharides, and oligosaccharides, and combinations thereof.

49. The process of claim 46 wherein the degrading step includes contacting the one or more solid components with an acid selected from the group consisting of sulfuric acid, hydrochloric acid, hydrobromic acid, and phosphoric acid, and combinations thereof.

50. A process for treating a biomaterial waste stream comprising cheese whey, the process comprising the steps of:

providing the biomaterial waste stream comprising cheese whey;

adjusting the pH of the waste stream;

heating the waste stream to precipitate one or more solid components comprising protein;

separating the one or more solid components from the biomaterial waste stream to provide a treated biomaterial waste stream;

degrading at least a portion of the one or more solid components with an acid to prepare a liquid extract; and

returning the liquid extract to the treated biomaterial waste stream.

51. The process of claim 50 wherein the one or more solid components further comprises carbohydrates.

52. The process of claim 50 wherein the degrading step includes contacting the one or more solid components with an acid selected from the group consisting of sulfuric acid, hydrochloric acid, hydrobromic acid, and phosphoric acid, and combinations thereof.

53. The process of claim 50 wherein the degrading step further includes contacting the one or more solid components with one or more microorganisms capable of degrading lactose.

54. The process of claim 50 wherein the degrading step further includes contacting the one or more solid components with one or more strains of lactobacillus.

55. A process for treating a barn animal biomaterial waste stream comprising one or more solid cellulosistic components, the process comprising the steps of:

providing the biomaterial waste stream;

separating one or more of the solid components from the biomaterial waste stream to provide a treated biomaterial waste stream;

degrading at least a portion of the one or more solid components with an acid to prepare a liquid extract comprising solubilzed carbohydrate and lignin and polymers thereof;

separating the lignin and polymers thereof from the liquid extract; and

returning the liquid extract to the treated biomaterial waste stream.

56. The process of claim 55 wherein the one or more solid components comprises a biomaterial selected from the group consisting of straw, hay, undigested grain, partially digested grain, and bedding, and combinations thereof.

57. The process of claim 55 wherein the degrading step includes contacting the one or more solid components with an acid selected from the group consisting of sulfuric acid, hydrochloric acid, hydrobromic acid, and phosphoric acid, and combinations thereof.

58. An apparatus for separating suspended solids from a biomaterial waste stream, the apparatus comprising:

a cylindrical shell having a top and a bottom;

an inlet in fluid communication with the interior volume of the shell, said inlet located at or near the bottom of the shell, and protruding into the interior volume of the shell;

an outlet in fluid communication with the interior volume of the shell, said outlet located at or near the top of the shell

a solid outlet located at or near the bottom of the shell in fluid communication with interior volume of the shell;

one or more stackable inner cylinders disposed in the shell, where the one or more inner cylinders include a truncated cone top having an opening, and at least a partially open bottom; and

a conical disk positioned about centrally within the inner cylinder, said disk being attached to the inner surface of the inner cylinder;

where the inner cylinders are sized and positioned to create and substantially maintain a gap between the inner surface of the shell and the outer surface of the inner cylinder, said gap having dimensions greater than the dimensions of the suspended solids to allow aid particles to flow counter currently to the direction of flow of the majority of the biomaterial waste stream.

59. The apparatus of claim 58 wherein there are a plurality of inner cylinders.

60. The apparatus of claim 58 wherein the bottom of the one or more inner cylinders is substantially open.

61. The apparatus of claim 58 wherein the opening in the top of the one or more inner cylinders is substantially centered relative to the vertical axis of the inner cylinder.

62. The apparatus of claim 58 wherein the conical disk is substantially centered relative to the vertical axis of the inner cylinder.

63. The apparatus of claim 59 wherein the truncated cone top of at least one inner cylinder protrudes into the open bottom of one other inner cylinder.

64. The apparatus of claim 58 wherein the truncated cone top forms a shallow slope angle relative to the cylindrical sides of the inner cylinder.

65. The apparatus of claim 58 further comprising a disperser configured to create a vortex in the biomaterial waste stream under flow conditions.