Practical Techniques from Fermentation Pretreatment to Granulation
The resource utilization of livestock and poultry manure has become a crucial link in modern ecological agriculture and the environmental protection industry. Through scientific granulation processes, manure can not only be transformed into high-value-added commercial organic fertilizer but also effectively solve environmental pollution problems. This article will systematically analyze the practical techniques for the entire process from fermentation pretreatment to granulation, providing enterprises with practical technical guidance. Fermentation Pretreatment: The Foundation of Successful Granulation Raw material ratio and adjustment are the first step in pretreatment. Pure livestock and poultry manure typically has a low carbon-to-nitrogen ratio (approximately 10-15:1), requiring the addition of auxiliary materials such as straw, rice husks, and mushroom residue to adjust it to the ideal range of 25-35:1. Simultaneously, the moisture content should be controlled at 55-65%; too high a moisture content can easily lead to anaerobic fermentation, while too low a moisture content will affect microbial activity.
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