Answer: The entire process of processing livestock and poultry manure into organic fertilizer involves 7 core steps, from raw manure treatment to finished product packaging. These steps are interconnected, ensuring the complete harmless and resource-based utilization of manure, guaranteeing the organic fertilizer reaches the required maturity and maintains stable quality. The specific process is as follows:
First, raw material pretreatment: removing stones and debris from the livestock and poultry manure, adding straw, sawdust, and other auxiliary materials to adjust the carbon-nitrogen ratio, and adjusting the moisture content of the raw materials to around 55% to lay the foundation for fermentation.
Second, high-temperature composting fermentation: adding special fermentation agents, and periodically turning and aerating the material with a compost turning machine to raise the temperature to 55-70℃ for 15-25 days, thoroughly killing insect eggs and pathogens, completing the material's maturity, and eliminating the risk of root burn.
Third, aging and maturation: letting the fermented material stand for 7-10 days, slowly cooling and maturing, balancing nutrients and stabilizing fertilizer properties. Fourth is crushing and refining. A crusher breaks up clumps of material, refining the raw material particles to improve subsequent processing efficiency and fertilizer quality. Fifth is screening and impurity removal. Screening equipment is used to select materials of uniform size, removing uncomposted hard lumps and impurities to ensure fertilizer purity.
Sixth is granulation (optional). Powdered organic fertilizer can be directly processed into finished products, while granulated organic fertilizer requires granulation by a granulator, followed by drying and cooling processes to reduce moisture and solidify the granules. The final step is automatic packaging. After the fertilizer meets standards, it is quantitatively packaged, sealed, and stored, completing the entire organic fertilizer production process. The entire process is compliant with regulations and environmental protection, suitable for standardized production in organic fertilizer processing plants of all sizes.
