The whole process can be simply divided into three processes: pretreatment, primary fermentation and post-treatment.
Pretreatment: after the composting raw materials are transported to the storage yard, weighed by the scale, they are sent to the mixing and mixing device. It is not allowed to mix organic wastewater from production and living in the plant, but water must be used. After that, the organic fermentation compound bacteria (1-2kg per ton of raw material) was added, and the organic fertilizer was roughly mixed according to the raw material composition, with moisture content of 60% - 65% and C / N ratio of 20-30.
When mixing ingredients, the brown sugar should be dissolved in water, and then the organic fertilizer should be added to ferment the biological bacteria, and then the diluent should be evenly sprinkled on the raw materials, and the organic fertilizer mixer should be used to stir it evenly.
Note: composting materials should be treated several hours in advance and soaked with water. The water used for dilution of biological fermentation bacteria should be regarded as drinking water without disinfectant (such as bleaching powder).
One time fermentation: the mixed raw materials are sent to the primary fermentation workshop by loader and piled into fermentation piles. At the same time, the organic fertilizer tipper is used for turning the piles in about 2 days, and the water and nutrients are added. The fermentation temperature is controlled at 50 ℃ ~ 65 ℃ (touch with hands to scald the hands) for aerobic fermentation. The one-time fermentation cycle of the project is 8 days, and one pool of raw materials is put into one pool every day to produce a pool of semi-finished products After the semi-finished product is discharged, it is ready to enter the next process.
After treatment: the compost product was further screened, and the residue was treated according to the moisture content. After granulating, the screened materials are sent to the dryer for drying. After adding various additives according to the proportion, the finished products are made by mixing and mixing, which are packed separately and put into storage for sale. The residue on the screen is returned to the crushing process for reuse.
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