Phosphorus Recovery from Poultry Litter

摘要: Land application of large amounts poultry litter is an environmental concern often associated to excess phosphorus (P) in soils and potential pollution water resources. Recovery P from waste attractive approach when on-farm not option. A treatment process, called quick wash, was developed for extraction recovery animal manure solids. The wash process consists three consecutive steps: (1) extraction, (2) recovery, (3) enhancement. In step 1, organically bound converted soluble by rapid hydrolysis reactions using selected mineral or organic acids. This also releases insoluble inorganic phosphate complexes. washed residue subsequently separated the liquid extract dewatered; unnecessary carbon (C) nitrogen (N) transformations are prevented dewatering residue. 2, precipitated addition lime form alkaline earth metal-containing product. 3, poly-electrolyte added enhance grade extracting recovering produces a final product that can be reused as fertilizer. addition, remaining solid has more balanced N (N:P) ratio environmentally safe land use crops. As alternative, used energy production reutilized bedding, especially areas where bedding material short supply.