Patent ID: 6464875
Filing Date: 2002-10-15
Classification: C02F,C05F,Y02A,Y02E,Y02P,Y02W,Y10S

Abstract:
A method of converting animal, vegetable, and food byproducts into useful bio-gas and fertilizer, comprising:anaerobically digesting or breaking down the byproducts in an anaerobic digester to produce bio-gas containing methane and an effluent; collecting and storing the bio-gas from the digester into a tank; transferring the effluent to an ammonia stripper to remove ammonia from the effluent; transferring the ammonia vapor from the ammonia stripper to an ammonia absorption unit to absorb the ammonia component into an aqueous solution to form an ammonium solution; and separating the effluent from the ammonia stripper into liquid effluents and solid effluents.