Greenhouse film covering forced ventilation aerobic composting method

Abstract

The invention discloses a greenhouse film covering forced ventilation aerobic composting method which comprises the following steps of mixing rice and wheat straws, vines, livestock and poultry excrement and urine, perishable garbage and garden wastes in proportion, and putting the mixture into a composting body space of a greenhouse film covering forced ventilation aerobic composting system for composting. According to the system, a composting body space is defined by an expanded polytetrafluoroethylene film, a composting body side wall and a composting body ground, a ventilation groove is formed in the composting body ground, a greenhouse framework is arranged above the expanded polytetrafluoroethylene film and covers a plastic greenhouse film, and the plastic greenhouse film is providedwith an air inlet; the forced ventilation device extracts air from the space between the plastic greenhouse film and the expanded polytetrafluoroethylene film and leads the air into the ventilation groove, and after 20 days of composting and when the temperature of the compost is reduced to 50 DEG C or below, the expanded polytetrafluoroethylene film is removed to enable the compost to be exposedto the lower portion of the plastic greenhouse film. According to the method, turning and turning treatment is not needed during composting, odor escaping in the whole composting process is circularly fed into the composting body through the forced ventilation system, the deodorization and ventilation effects are achieved, and the overall operation cost is low.

Description

technical field [0001] The invention relates to an aerobic composting method, in particular to a greenhouse film-covered forced-air aerobic composting method. Background technique [0002] Organic waste is the "farm treasure" in my country's traditional farming civilization. The source of organic waste basically comes from agriculture. Common organic waste includes livestock and poultry manure, straw, and end vegetables from agriculture, and kitchen waste and garden waste from cities and towns. , domestic sludge, etc., as well as processing waste from the agricultural product processing industry, such as distiller's grains, cakes, etc. If organic waste is converted into organic fertilizer after composting, it can improve soil, improve soil, balance nutrition, improve soil physical and chemical properties, etc., and is the basis for sustainable agricultural development. [0003] At present, the composting process can be divided into open and closed composting processes. In o...

AI Technical Summary

Problems solved by technology

However, this technology still cannot solve all the problems of odor dissipation; at the same time, due to the film covering, the evaporation of water vapor is blocked, and the water drop rate of the pile is slow; moreover, it is often divided into two different stages: composting and thick ripening. The way of stacking cannot solve the problem of ventilation and deodorization in the post-ripening stage, and it also increases the cost of the overall operation

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