The invention discloses a method for converting
livestock and
poultry manure into an
organic fertilizer through microbial
fermentation, and belongs to the technical field of
livestock and
poultry manure conversion. The method comprises the steps that firstly, the
livestock and
poultry manure is subjected to physical sorting,
lime or
monopotassium phosphate is added according to the pH value detection result, and the pH value is adjusted to 6.5-7.5; after determining
nutrient components of the
feces, adding soluble salt trace elements such as
zinc sulfate and mixed carbohydrates of
cane sugar and glucose; traditional strains of bacillus,
lactic acid bacteria,
saccharomycetes and actinomycetes are mixed with novel strains separated from the periphery of a livestock and poultry farm, optimized culture is conducted through a two-step culture method, and
plant extracts such as lily extracts or livestock and poultry intestinal metabolites such as short-chain
fatty acid are added in the culture process. The
fermentation process adopts a rotatable
fermentation tank body, and comprises three stages of fermentation of rapid heating, high-temperature stabilization and cooling
decomposition. And finally, low-temperature
vacuum drying, crushing,
granulation and addition of a
coating material are performed to prepare the
organic fertilizer, so that efficient
resource utilization of the livestock and poultry
manure is realized.