The process of producing organic fertilizer from livestock and poultry manure mainly includes the following steps:
Raw material ratio: chicken manure, pig manure, cow manure, biogas residue and other animal manure or fermentable raw materials with fertilizer effect are prepared in a certain proportion.
Raw material mixing: Mix the prepared raw materials evenly to improve the uniform fertilizer content of the fertilizer particles as a whole.
Raw material granulation: Send the mixed raw materials into the granulator for granulation.
Pellet drying: Send the granules made by the granulator into the dryer to dry the moisture contained in the granules, increase the strength of the granules, and facilitate storage.
Pellet cooling: The temperature of the fertilizer granules after drying is too high and it is easy to agglomerate, so it needs to be cooled.
Pellet classification: Classify the cooled granules, crush the unqualified granules and re-granulate them, and screen out the qualified products.
Finished product coating: Coat and coat the qualified products to increase the brightness and roundness of the granules.
Finished product packaging: Bag the finished granules and store them in a ventilated place.
IV. Summary
The utilization of livestock and poultry manure and waste resources and fertilizer production technology are important ways to achieve environmental protection and resource utilization. By adopting reasonable treatment technologies and processes, the waste generated in the livestock and poultry breeding process can be converted into valuable resources, while reducing environmental pollution and promoting sustainable agricultural development. In the future, with the continuous advancement of technology and policy support, the field of livestock and poultry manure and waste resource utilization will usher in a broader development prospect.