Equipment and process for producing organic fertilizer by fermentation of lees
The lees has a large acidity and a moisture content of more than 65%. It is highly biochemical, easily corrupted, and inconvenient to store. If not handled in time, it will easily cause great pollution to the environment. On the other hand, lees, as a by-product of the production of liquor, is rich in nutrients such as crude protein, crude fat, crude starch, crude fiber and nitrogen-free leachate, and is also rich in inorganic elements such as phosphorus and potassium as well as pentose and total sugar. Ingredients are an excellent source of organic fertilizer manufacturing process. The use of rich lees raw materials to make organic fertilizers can not only solve environmental problems, turn waste into treasure, but also provide an organic environment for green agricultural production. It has high economic, environmental and social benefits.
The amount of lees is evenly sprinkled with 2 to 2.5% of lees quality quick lime, 3 to 5% of straw and 1 to 2% of sawn wood surface, and the fermentation material is prepared by mixing evenly. Spread the strains evenly on the prepared fermented material at a ratio of 0.2% to 0.3% of vinasse quality and ferment for 3 to 5 days. The temperature of the stack rises to 60 to 65 ° C and the stack is covered with mycelia.After 2 ~ 3 days, the temperature of the stack will rise to 60 ~ 65 ° C again, covered with mycelium, then turn over again; after 8 ~ 10 days of fermentation, enter the high temperature period of fermentation to maintain the temperature of the stack Do not exceed 65 ° C to adjust the frequency of turning over; the fermentation cycle is 20-25 days. The temperature of the stack fell below 50 ° C, the moisture of the compost was about 35%, the appearance was brown, gray-brown or black, the physical structure was loose, and there was no foul odor. Crushing and sieving: After passing through the maturation period, the fermented materials are crushed with a semi-humid material crusher, and then screened through a 3 ~ 4mm roller screen to obtain the final product of lees organic fertilizer.
Distillery distillery + fermentation agent + auxiliary raw materials (crop straw, etc.) → pre-mixing → fermentation tank → turning machine → fermentation (7-8 days rot, dehydration, sterilization, deodorization) → out of the pool → powdered organic fertilizer (Or as a raw material for granulation and deep processing to produce round granulated organic fertilizer) → Ingredients measurement → multidimensional mixing → extrusion granulation → polishing and shaping (3.5-4mm round spherical granules) → low temperature drying → normal temperature cooling → graded screening → finished organic fertilizer → Measuring and packaging.