Patent ID: 8282827
Filing Date: 2012-10-09
Classification: C02F,C05C,C05F,Y02A,Y02E,Y02P,Y02W

Abstract:
1. A method of producing methane, an organic based fertilizer and usable water from animal waste, the method comprising the steps of: (a) collecting the animal waste in a barn; (b) rapidly separating the animal waste into liquid waste and solid waste in the barn; (c) clarifying the liquid waste and thereby producing a supernatant and a sludge; (d) extracting ammonia from the supernatant to produce an ammonium salt and an aqueous solution; (e) filtering the aqueous solution to produce a concentrate and the usable water; (f) subjecting the solid waste to anaerobic digestion to produce methane and a wet by-product; (g) pressing the wet by-product to into a filter cake and filtrate; and (h) forming the filter cake into the organic based fertilizer.