Membrane covering aerobic fermentation circulating device and circulating method

Abstract

The invention relates to the technical field of circulation in organic solid waste fermentation treatment, in particular to a membrane covering aerobic fermentation circulation device and a membrane covering aerobic fermentation circulation method. Comprising a fan, the fan is connected with a plurality of fermentation bins, an air inlet of each fermentation bin is connected with the fan through an air supply pipe, and an air outlet of each fermentation bin is connected with the fan through an exhaust pipe; an automatic monitoring unit is arranged above a stockpile of the fermentation bin, and the automatic monitoring unit and the fan are both connected with an automatic control unit; a waterproof moisture-permeable film covers the upper part of the stockpile in the fermentation bin. The device can adjust the temperature and humidity in the fermentation bin and the oxygen concentration distribution in the stockpiling room, so that the fermentation bin performs sufficient internal and external circulation, the fermentation is sufficient, and the fermentation effect is good. According to the circulating method carried out by adopting the device, uniform fermentation can be carried out in the fermentation bin, oxygen and temperature initially required by fermentation reaction can be provided for other fermentation bins, the fermentation reaction is promoted, the overall efficiency is improved, the carbon fixation rate is increased, and greenhouse gas emission is reduced.

Description

technical field [0001] The invention relates to the technical field of circulation for organic solid waste fermentation treatment, in particular to a membrane-covered aerobic fermentation circulation device and a circulation method. Background technique [0002] The country attaches great importance to the construction of ecological civilization. With the rapid development of industry and agriculture in our country, organic solid wastes such as livestock and poultry manure, straw, garden waste, and traditional Chinese medicine residue have not been properly treated, causing harm to the ecological environment. How to effectively, quickly, and low-cost treat organic solid waste and utilize it as a resource has become a research hotspot in the eco-environmental protection industry. Among them, nano-membrane-covered high-temperature aerobic fermentation composting technology has the characteristics of environmental protection, less investment, quick effect, simple operation, low...

AI Technical Summary

Problems solved by technology

[0006] However, because ammonia, nitrous oxide, carbon dioxide, and low-carbon alkanes are smaller than the micropore diameter of the membrane, they will still diffuse out of the membrane under the action of pressure difference. For example, in the composting process, only more than 90% of the deodorization can be achieved. In the technology, it is mainly for environmental protection control gases (such as ammonia gas), mainly through hydrophilic treatment on the inner side of the membrane, so that water vapor can accumulate on the non-pore parts to form water, and use the characteristics of ammonia gas that is easily soluble in water , with the water dripping back onto the stockpile, and being further fixed in the fermentation material by microorganisms, but this process will be affected by many factors, and at the same time non-water-soluble greenhouse gases such as nitrous oxide and low-carbon alkanes will be discharged out of the membrane ( The emission reduction effect is only above 50%). On the one hand, resource waste (wasting nutrients, carbon, etc.), on the other hand, the deodorization and emission reduction effects are limited

Moreover, when film-covered fermentation is carried out, the temperature and humidity distribution in the fermentation chamber is uneven, the fermentation is insufficient, and the fermentation effect is poor.

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