Recovery System of Useful Resources from Biogas Plant and Recovery Method of Useful Resources Using the same

摘要

The present invention relates to a useful resource recovery system using methane and carbon dioxide of ammonia nitrogen and biogas of an anaerobic digestion liquid produced from a biogas plant, and a useful resource recovery method using the same. The useful resource recovery system includes: (a) a biogas plant unit for anaerobically digesting organic wastes to produce biogas and an anaerobic digestion liquid; (b) a carbon dioxide separator for separating the biogas produced in the biogas plant part; (c) a cogeneration unit for combusting using the remaining biogas after carbon dioxide is separated from the carbon dioxide separation unit; (d) a solid-liquid separator for separating the sediment and the filtrate of the anaerobic digester produced in the biogas plant; (e) an ammonia deasphalting portion for degassing the ammonia of the filtrate separated in the solid-liquid separator; (f) an ammonia absorber for absorbing ammonia deaerated in the ammonia deaeration part; And (g) a bicarbonate ammonium production unit for producing ammonium bicarbonate by reacting ammonia absorbed in the ammonia absorption unit with carbon dioxide separated in the carbon dioxide separation unit, wherein the water in the ammonia removal unit ₂ O) to the ammonia absorbing portion.