C - Chemistry – Metallurgy – 05 – F
Patent
C - Chemistry, Metallurgy
05
F
71/21, 99/33, 71
C05F 3/06 (2006.01) A23K 1/00 (2006.01)
Patent
CA 1099943
ABSTRACT. A method of treating animal waste arising in animal husbandry to obtain products useful on the land or in animal feedstuff, which comprises contacting freshly produced animal dung and urine with a sufficient proportion of a base sufficiently soluble therein and selected from alkali metal hydroxides, alkali metal carbonates, alkaline earth metal hydroxides, and mixtures thereof, to form an alkaline slurry having a pH value of from 9.0 to 12,0. The alkaline slurry is retained at said pH for a period of time sufficiently long to inactivate at the temperature of retention effectively all pathogens present, to yield at least one sterile product applicable to land as fertiliser or soil conditioner. At least part of said resulting sterile product is preferably subjected to aerobi? microbiological digestion optionally with nutrient additions influencing the balance therein of carbon, hydrogen, nitrogen, phosphorus and potassium to yield an effectively pathogen-free biomass applicable as an animal feedstuff supplement.
291825
Davidson Richard R.
G. Ronald Bell & Associates
LandOfFree
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