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US 10,005,697 B1Granted
Method and systems for isolation and/or separation of target products from animal produced waste streams
AssigneeSmartflow Technologies, Inc.
InventorsMark Vander Hoff, Todd Benson, Marc Pugh, Jason Bell
Life of this patent
Estimating the term…
Abstract
The present invention relates to separation methods and systems for converting high concentrations of animal wastes into useful products, wherein the separation of the desired useful products is conducted with a cross-flow filtration system having the ability to the separate desired useful energy and/or products from both viscous and non-viscous medium.
Claims11
A process for treating manure in order to produce a liquid fertilizer and a concentrated viscous fertilizer, the process comprising:
- providing a manure medium;
- separating the manure medium into the liquid fertilizer and the concentrated viscous fertilizer by passing the manure medium through at least one cross-flow filtration cassette comprising:
- an array of sheet members of generally rectangular and generally planar shape with main top and bottom surfaces, wherein the sheet members include in sequence in said array a first retentate sheet, a first filter sheet, a permeate sheet, a second filter sheet, and a second retentate sheet, wherein each of the first filter sheet, the permeate sheet, and the second filter sheet in said array has at least one inlet basin opening at one end thereof and at least one outlet basin opening at an opposite end thereof, wherein each of the sheet members in the array has at least one permeate passage opening at longitudinal side margin portions of the sheet members, wherein each of the first and second retentate sheets have a multiplicity of channel openings extending longitudinally between the inlet and outlet basin openings of the first filter sheet, the permeate sheet, and the second filter sheet, and said retentate sheets are bonded to an adjacent filter sheet about peripheral end and side portions thereof, wherein the inlet basin openings, outlet basin openings, and permeate passage openings are in register with one another and the permeate passage openings of each of the retentate sheets are circumscribingly bonded to the adjacent filter sheet, with a central portion of each of the retentate sheets and adjacent filter sheets being unbonded to permit permeate contacting the retentate sheet to flow through the filter sheet to the permeate sheet, wherein the manure medium is flowed over the first and second filter sheets at a shear force that opposes accumulation of solids on the surface of the first and second filter sheets;
- and
- wherein the liquid fertilizer is in a permeate stream and the concentrated viscous fertilizer is in a retentate stream, wherein the retentate stream comprises about 10% to about 80% solids, and wherein the permeate stream is NH3/NH4 rich and the retentate stream is rich in phosphorus.
2 more elements
Dependencies are inferred from the claim text.