Complete Production Process of Bio-organic Fertilizer Production Line

Bio-organic fertilizer production uses livestock and poultry manure, crop straw, mushroom residue, and other agricultural and forestry waste as main raw materials, supplemented with functional microbial strains. Through harmless treatment and resource-based processing, it produces ecological fertilizer that meets national standards. The entire bio-organic fertilizer production line has a scientific and standardized process, achieving clean and standardized production throughout. It is mainly divided into four core stages: raw material pretreatment, high-temperature aerobic fermentation, fine processing, and finished product processing. Each process is closely linked to ensure stable fertilizer quality.

Raw material pretreatment is the fundamental process of production. First, the collected raw materials such as cow manure, straw, and mushroom residue are crushed by a crusher to refine the particle size and eliminate large impurities that may affect subsequent fermentation. Then, impurities such as stones and plastics are removed by screening equipment. Next, moisture content and carbon-nitrogen ratio are adjusted according to the material. Finally, an automatic batching machine and mixer complete the uniform mixing of raw materials and auxiliary materials, creating suitable conditions for microbial reproduction and fermentation, ensuring uniform material composition from the source.

High-temperature aerobic fermentation is the core process in production, determining the fertilizer's harmlessness and efficacy. The mixed materials are fed into a closed fermentation workshop, where they are periodically turned using a large wheel compost turner to continuously replenish oxygen and dissipate accumulated heat. Under the action of microorganisms, the materials undergo high-temperature fermentation, with the temperature maintained stably above 55℃, effectively killing insect eggs, pathogens, and weed seeds in the raw materials, achieving harmless treatment. After 15 to 20 days of full composting, the materials undergo complete mineralization transformation, forming loose and fertile primary organic fertilizer raw materials.

The composted materials then enter the fine processing stage. First, a secondary screening process removes impurities, eliminating uncomposted hard lumps and agglomerated materials, improving material purity. Then, functional bacteria are inoculated, with specialized microbial agents added evenly. The processing temperature is strictly controlled to prevent the loss of live bacteria due to high temperatures, ensuring the fertilizer meets the required number of effective live bacteria. If granular organic fertilizer is to be produced, further processes such as granulation, low-temperature drying, and cooling are performed, resulting in full and uniform granules that are easier to store and apply.

Finally, the finished product processing stage begins. After cooling, the fertilizer undergoes screening and polishing to select qualified finished granules, while substandard materials are recycled for reprocessing. The qualified finished products are then fed into fully automated packaging equipment for quantitative weighing, sealing, palletizing, and warehousing. The entire process is equipped with dust removal and waste gas treatment equipment to achieve harmless treatment of dust and odors, and wastewater recycling. The entire process is green, environmentally friendly, highly efficient, and stable, enabling large-scale production of high-quality bio-organic fertilizer.