Organic fertilizer machine processing animal manure
Animal manure processing organic fertilizer is usually composed of pre-treatment, main fermentation, post fermentation, post-treatment, compounding and other organic fertilizer machine processes.
The main task is to remove the mud, metal, battery and other non fermented foreign matters from the plant residues, smash the plant residues, adjust the water content and C / N value. The reasons for removing non fermented foreign matters: reducing the volume of fermentation bin; removing the substances such as metals and batteries that affect fermentation, reducing the chances of heavy metal pollution; removing the hard to crush substances such as plastic rope, which is conducive to later crushing and stirring. The reason for the adjustment of the size of plant residues by crushing: generally, the grinding makes the water content of raw materials homogenize to a certain extent, increases the specific surface area of materials, increases the contact area between materials and microorganisms, and 2-high 30-resolution speed.
Theoretically, the finer the material is, the better. However, in order to ensure a certain degree of porosity of the material to obtain oxygen, the 2-30 mm range is generally better.
2. Main fermentation
It can be carried out in the open air or in the fermentation device, and oxygen can be supplied to the stacking layer or the fermentation device by compost windrow turner turning the pile or forced ventilation. The first is the decomposition of easily decomposable substances such as sugar and protein, which produces C02 and H20, and generates heat at the same time, which makes the fermentation temperature rise. fertilizer production process At the initial stage of fermentation, the decomposition and fermentation of substances depend on the medium temperature bacteria (30-40 ? is the most suitable growth temperature). With the rise of fermentation temperature, the high temperature bacteria with the most suitable temperature of 45-65 ? replace the medium temperature bacteria. At this time, all kinds of pathogenic bacteria, insect eggs and weed seeds are killed. Generally speaking, the stage from the temperature rise to the beginning of decrease is called the main fermentation stage, which is 3-10 days.
3. Post treatment
After two times of fermentation, almost all organics become fine and deformed, and the quantity is reduced. After another separation process, impurities such as plastics, glass, ceramics, metals, small stones are removed and broken again as required.
Some fermented products have bad smell after fermentation and must be deodorized. Methods: chemical deodorant, alkaline water and aqueous solution filtration, activated carbon, zeolite and special soil were used as adsorbents. organic fertilizer granulator
According to the demand of product formula and nutrient content of fermented materials, add urea, phosphate fertilizer and potassium fertilizer to the fermented materials to produce organic-inorganic compound fertilizer, or add microorganisms with specific functions to produce bio organic fertilizer.
6. Detection, packaging and storage
Check and analyze whether the nutrient content, maturity, water content, heavy metal content, pathogenic bacteria content, organic matter content and other indicators meet the product requirements. After meeting the requirements, it shall be weighed, packed and stored.