During the production of powdered organic fertilizer, it mainly adsorbs dust and floating particles floating in the air. In the harmless treatment of livestock and poultry manure, aerobic stack fermentation is generally used. That is to say, in general stack fermentation, it is important to avoid wind and rain during fermentation to reduce organic matter. Therefore, before fermentation, it is necessary to build a rain shelter and stack the fermentation tank.
The following is the process flow of a small cow manure powder organic fertilizer production line:
1. Raw material ratio per ton: 500kg of cow manure+300kg of pig manure+200kg of bacterial residue+50g of bacterial species (cow manure and pig manure can also be replaced by other animal manure). Auxiliary materials: When the humidity of animal manure is high, appropriate materials with low moisture content such as straw, rice husk, and cake can be added to reduce the moisture content of fermentation materials.
2. Stacking: According to the above raw material ratio, stack as needed. The length of the stack is unlimited, with a width of 2 meters and a height of about 1 meter. When stacking materials, it is necessary to stack them layer by layer evenly. Select the appropriate width of the fertilizer flipper based on the amount of fecal treatment each time.
3. Adding bacterial strains: Expand the bacterial strains and residue in a 1:5 ratio (the purpose of doing this is to dilute the bacterial strains and spread them evenly. For example, using 1kg of bacterial strains with 5kg of wheat bran or rice husk powder is acceptable). Generally, 1kg of bacterial strains can ferment 10-20 tons of feces and straw. In cases of high fermentation capacity, a dual axis horizontal mixer can be used to evenly mix and sprinkle on the surface of the pile according to the number of piles.
4. Flipping fermentation: Use a slot type flipping machine to flip the stack. When the temperature rises to above 55 ℃, flip the stack every 1-2 days. After 10-15 days of fermentation at 55 ℃, fold the stack. (The purpose of flipping the pile is to evaporate water, allow oxygen to enter the interior of the pile, and allow bacteria to quickly reproduce and ferment inside the pile.)
5. Crushing: Fermented materials cannot be directly sold as commodities because long-term stacking can cause clumping and other phenomena. At this point, the remaining large pieces of material need to be finely crushed by a high humidity material crusher to obtain powdered organic fertilizer. (In the early stage of fermentation, in order to accelerate the fermentation process, auxiliary materials can be added to the fertilizer crusher for crushing.)
6. Screening: In order to improve the appearance, the powdered organic fertilizer is re screened to obtain a uniform and consistent powdered material before packaging. After following the above steps, the pure powdered organic fertilizer is sieved by the drum screening machine.
7. Packaging: The powdered organic fertilizer can only be directly stored and sold after being packaged on an automatic packaging scale.