The agricultural solid waste resource utilization project adopts a land use model, establishes an organic fertilizer factory, uses livestock and poultry manure such as chickens, pigs, cows, sheep, and crop straw process materials, applies biological fermentation technology, and scientifically processes (biological fermentation, high-temperature sterilization, deodorization, drying) to produce environmentally friendly and efficient organic fertilizers with excellent quality and stable fertilizer efficiency, in order to achieve efficient resource utilization of livestock and poultry waste, and achieve a win-win situation of livestock and poultry breeding benefits and environmental protection ecological benefits.
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The granulation process flow of organic biological fertilizer production line
The entire process can be simply divided into three processes: pre-treatment, primary fermentation, and post-treatment.
Pre treatment: After the compost raw materials are transported to the yard, they are weighed by a scale and sent to the mixing and stirring device. Organic wastewater from production and domestic use cannot be mixed in the factory, and must be treated with clean water.
Then add organic biological fermentation compound bacteria (1-2 kg per ton of raw material), and roughly adjust the moisture content of organic fertilizer according to the raw material composition (chicken manure: cassava residue or mushroom residue: straw=6:2:2) to 60% -65%, with a carbon to nitrogen ratio of 20-30. After mixing, proceed to the next process.
When adding ingredients, the brown sugar must be dissolved in water first, and then organic fertilizer fermentation bacteria should be added and stirred thoroughly. Then, the diluent should be evenly sprinkled on the raw materials and thoroughly stirred with a fertilizer mixer.
Attention: The composting raw materials should be treated several hours in advance, soaked in water, and the water used to dilute the biological fermentation bacteria should be considered as drinking water without disinfectants (such as bleach powder).
Primary fermentation: The mixed raw materials are sent to the primary fermentation workshop using a loader to form a fermentation pile. At the same time, the pile is flipped for about 2 days and supplemented with water and nutrients. The fermentation temperature is controlled at 50 ℃ to 65 ℃ (hot to the touch) for aerobic fermentation. The fermentation cycle for this project is 8 days, with one tank of raw materials entering and one tank of semi-finished products exiting each day. After the fermented semi-finished products are discharged, they are ready to enter the next process.
Post processing: Further screen the compost product, and the screened material is processed according to the moisture content. After sieving and granulating, the material is sent to a fertilizer dryer for drying. Various additives are added in proportion, stirred and mixed to produce finished products, which are packaged and stored for sale. The screened material is returned to the crushing process for reuse.
