Compost manufacturing process
Compost manufacturing process is the pretreatment in the bio-organic fertilizer production. It mainly uses animal manure and plant waste to mineralize, humify and harmlessly by using various microorganisms, so that all kinds of complex organic nutrients can be transformed into soluble nutrients and humus. At the same time, in the composting manufacturing process, the high temperature (60-70℃) generated during the composting process is used to kill pathogens, insect eggs and weed seeds in raw materials, so that the composting is harmless. In compost manufacturing process, appropriate conditions for fermentation are conducive to the acquisition of microorganisms, the improvement of fermentation quality, the acceleration of composting speed and the improvement of organic fertilizer quality.
Treatment of compost fermentation
Feces, straw, peat, plant ash and other substances were stacked in the fermentation tank, and appropriate amount of water and fermentation bacteria were added. In general, the material temperature rises gradually several days after composting. The highest composting temperature is 60 - 70 ℃. The high temperature stage is not less than 3 days in the fermentation process. After 10 days, the temperature of the compost body will gradually decrease. During material fermentation, it is necessary to use compost turner to dump materials. The compost turning machine not only has the function of increasing air circulation, but also can mix fermentation materials evenly and crush materials at the same time, avoiding the trouble of pretreatment of raw materials. The turner turns the bottom material over to ensure that all materials are evenly exposed to air, greatly improving the quality of organic fertilizer production. The turner brings great convenience to the composting production and treatment, eliminates human labor and speeds up the fermentation speed.
Completion status of compost manufacturing process
1) After composting fermentation, the decomposed compost is brown or black-brown, with alcohol flavor.
2) Grab a handful of compost by hand, the material is wet, soft and elastic
3) The volume of compost produced by fermentation was reduced by half or more than that of the original compost.
4)The C/N ratio of compost is generally 20-30:1.
5)The humification coefficient of compost is usually about 30%.