Organic waste negative-pressure aerobic fermentation fertilizer preparation process

Abstract

The invention discloses an organic waste negative-pressure aerobic fermentation fertilizer preparation process which comprises the following steps: in a negative-pressure production workshop, feedinga fermentation material obtained by fully mixing organic waste, auxiliary materials and a compound microbial fermentation inoculant into a fermentation tank provided with a negative-pressure oxygenation pipeline through a conveying belt, and pumping away water vapor and odor generated by fermentation; sucking oxygen-containing air above the fermentation tank into the fermentation material, turningover the fermentation material in the fermentation tank once every day by a turning machine, and throwing the material at the tail end to a discharging belt to be conveyed out so that the fermentation material becomes a decomposed material with the water content of 30% or below and the temperature of a material pile reduced to 45 DEG C or below after treatment of one fermentation period; and transferring the decomposed materials to a decomposition workshop through a conveying belt to be aged and decomposed and then can be used as organic fertilizer raw materials. The process provides a very good solution for bottlenecks and pains of organic waste compost fermentation and product resource utilization processes, and has a very good popularization value and a wide market prospect.

Description

technical field [0001] The invention belongs to the field of fertilizer production, and in particular relates to a process of fermenting organic wastes to make organic fertilizers. Background technique [0002] In recent years, with the acceleration of urbanization and the advancement of agricultural science and technology, a large amount of organic waste (municipal sludge, animal husbandry waste, straw, etc.) Most of them use conventional methods such as composting, incineration, and landfilling. Among them, incineration and landfilling are costly, occupy a large area, and resources are not recycled. However, ordinary composting processes have long processing cycles, uneven fermentation, and difficulty in concentrating odors. Bottleneck problems such as collection and treatment, high moisture content after fermentation, poor environmental sanitation in the workshop, and high energy consumption seriously restrict the sustainable development of the organic waste composting fe...

AI Technical Summary

Problems solved by technology

Most of them use conventional methods such as composting, incineration, and landfilling. Among them, incineration and landfilling are costly, occupy a large area, and resources are not recycled. However, ordinary composting processes have long processing cycles, uneven fermentation, and difficulty in concentrating odors. Bottleneck problems such as collection and treatment, high moisture content after fermentation, poor environmental sanitation in the workshop, and high energy consumption seriously restrict the sustainable development of the organic waste composting fermentation industry

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