METHOD OF POULTRY MANURE PROCESSING AND PRODUCT OF PROCESSING Russian patent published in 2000 - IPC

FIELD: agriculture; may be used for preparation of fertilizers from waste of poultry breeding. SUBSTANCE: method involves simultaneous liquid separation and drying of initial raw material in vacuum with boiling and evaporating temperature of liquid not less 100% and up to 1% of humidity. The prepared product contains, mas.%: ammonia nitrogen, 1.35; total nitrogen, 1.0; phosphorus (per P₂O₅), 5-6; potassium (per K₂O₅), 1.5-2.5. Ratio of carbon to nitrogen is 10.2%, and pH is equal 6-7. EFFECT: simplification of technological process and its increased productivity and efficiency, improved process ecology and quality of product. 2 cl, 1 dwg