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US 2017/0172055 A1Published application
System and method for anaerobic digestion of animal wastes
AssigneeHolistic Farming, Inc. (HFI)
InventorJason Chia Hsing Shih
Life of this patent
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Abstract
A new method of disposing of waste for the hog industry is disclosed which avoids use of lagoons. Manure is semi-continuously degritted, anaerobically digested and digested with biomass to produce bio-organic fertilizer and biogas.
Claims23
A method for the semi-continuous treatment of animal waste from an animal containment building comprising:
- a) periodically removing undiluted animal waste from the animal containment building;
- b) placing the removed waste in a hydrolytic degritting chamber with sufficient heated water or steam to obtain a mixture of at least about 50 degrees C. to about 60 degrees C. and degritted;
- c) transfer of at least a portion of the degritted mixture into an anaerobic digester chamber held at a temperature of about 50 degrees C. to about 60 degrees C. and digested;
- and
- d) transfer of at least a portion of the digested mixture to a secondary solid phase digester tank, loaded with dry biomass and fermenting the mixture at a temperature of at least about 50 degrees C. and removing the bio-organic fertilizer from the solid-phase digester.
2 more elements
A system for the semi-continuous treatment of animal waste from one or more animal containment building;
- a) one or more animal containment buildings containing animal waste;
- b) a hydrolytic degritter in fluid communication with an anaerobic digester chamber, which is in turn in fluid communication with a secondary solid phase digester chamber, all in an insulated unitary structure wherein communication is accomplished by flow pressure;
- c) heated water or steam to combine with animal wastes from the one or more containment buildings sufficient to raise the combined temperature to about 50 degrees C. to about 60 degrees C.;
- and
- d) wherein the animal waste from the animal containment building is then in fluid communication with the hydrolytic degritter.
2 more elements
Dependencies are inferred from the claim text.