Fermentation and processing technology of pig manure organic fertilizer production line
Fermentation technology of pig manure organic fertilizer production line
1. Material ratio
Pig manure is added with fertilizer fermentation agent. The fermentation agent should be mixed with rice bran (or bran, corn meal and other substitutes) in the proportion of 1:5, and then evenly sprinkled into pig manure pile for even mixing. It is better to add straw or mushroom residue to adjust the carbon nitrogen ratio.
2. Material stacking
It can't be too small or too short when making pile, which will affect fermentation. The pile with height of 1.5m-2m, width of 2M and length of over 2m-4m has better fermentation effect.
3. Moisture requirements
The water content of fermentation materials should be controlled at about 65%. Too much water will lead to poor ventilation, slow temperature rise and odor. Adjust the material moisture method: straw, sawdust, mushroom residue, dry soil powder can be added if the moisture is too high. Judge whether the moisture is suitable or not: hold a handful of materials tightly, see the watermark at the finger joint but do not drop water, and it is appropriate to scatter when landing.
4. Temperature requirements
The start-up temperature should be above 15 ℃ (it can be operated in four seasons, not affected by the season, and it should be fermented indoors or in the greenhouse in winter).
5. Windrow ventilation
During the fermentation process, pay attention to proper oxygen supply and turning over (turn over several times when the temperature rises to 75 ℃ or above), and control the temperature rise at about 65 ℃, too high temperature has an impact on nutrients.
6. Fermentation complete
Generally, the fermentation can be completed within one week, the material is dark brown, and the temperature begins to drop to normal temperature, indicating that the fermentation is completed. If there are too many sawdust, sawdust, rice husk and other auxiliary materials, the fermentation time should be extended to fully mature.
Processing flow of pig manure organic fertilizer production line
1、 The fertilizer production machine will directly enter the fermentation area with the recovered livestock and poultry manure. After one fermentation and two aging stacking, the stink of livestock manure is eliminated. In this stage, the fermentation bacteria can be added to decompose the crude fiber, so that the particle size after crushing can meet the particle size requirements of granulation production.
2、 Smash the fermentation materials that have completed the secondary aging stacking process and enter the mixing and stirring system. Before mixing and stirring, according to the formula, add n, P, K and other trace elements into the mixing and stirring system and start mixing.
3、 The mixed materials are transported to the granulation system, the granulation enters into the cooling system after passing through the dryer, the materials are sieved after reaching the normal temperature, the qualified particles enter into the coating machine to wrap the coating film, and then the packaging is started, the unqualified particles are crushed by the crusher and then returned to the granulation system, and the granulation continues.
4、 Automatic packaging of finished products.