Method for preparing organic fertilizer through molecular filter membrane fermentation

Abstract

The invention provides a method for preparing an organic fertilizer through molecular filter membrane fermentation, which comprises the following steps: (1) material pretreatment: adjusting the moisture content of a fermentation material to be 60-65%, adjusting the carbon nitrogen ratio to be (25-35): 1, and adding a fermentation inoculant into the crushed fermentation material; (2) pile fermentation: performing pile fermentation on the materials, buliding a pile with the height of 1.5-2 m and the width of 4.5-5 m, covering the pile with a molecular filter membrane, performing ventilation and fermentation for 10-15 days, turning the pile once after fermentation is performed for 5-8 days, and then fermentation continues to be completed; (3) aging: after the temperature of the heap body is reduced to 55 DEG C, transferring, then performing heap building and aging again, wherein the aging time is 20-30 days; and (4) screening and packaging: after aging, adding trace elements, and packaging after treatment by a screening machine to obtain the organic fertilizer raw material. The organic fertilizer produced by the method is high in yield, no odor exists in a fermentation area, and the fermentation time is short; meanwhile, the quality of the obtained organic fertilizer is high.

Description

technical field [0001] The invention belongs to the technical field of organic fertilizer preparation, and in particular relates to a method for preparing organic fertilizer by molecular membrane fermentation. Background technique [0002] Recycling agricultural waste and producing it into organic fertilizers that can be used in agricultural planting has become a research hotspot in the field of agriculture and the reuse of waste resources. The use of pruned branches, straw and other agricultural wastes to ferment and produce organic fertilizers has been studied accordingly. The method can realize harmless treatment and resource utilization of crop stalks, so as to achieve the purpose of turning waste into wealth and protecting the environment. [0003] At present, there have been corresponding reports on the fermentation devices and methods for crop stalks, but the current tank fermentation or pile fermentation method has too many sections in the fermentation tank, and the...

AI Technical Summary

Problems solved by technology

[0003] At present, there have been corresponding reports on the fermentation devices and methods for crop stalks, but the current tank fermentation or pile fermentation method has too many sections in the fermentation tank, and the time and temperature of each section must be strictly controlled. And water content, the production process is more complicated, and there is no more advanced special fermentation equipment, the waste treatment capacity is low, the output of organic fertilizer is low, the fermentation equipment is backward, the odor in the fermentation area is large, and the fermentation time is difficult to shorten

On the other hand, the organic fertilizer produced by the current fermentation device has a large bulk density, small fertilizer porosity, and poor air permeability. The number of viable bacteria or the content of viable bacteria is low, and the characteristics of bio-organic fertilizers cannot be effectively utilized