Additive for collaborative emission reduction of ammonia gas and greenhouse gas in composting process and application thereof

Abstract

The invention provides an additive for collaborative emission reduction of ammonia gas and greenhouse gas in a composting process and application thereof, and relates to the technical field of organicwaste resource utilization. The additive comprises ferrous sulfate and vermiculite in a mass ratio of (0.8-1.2): (0.8-1.2). When the additive is applied to an aerobic composting process, an ammonia gas emission peak value in the composting process can be delayed, volatilization of ammonia gas in the composting process is remarkably reduced, and nitrogen loss in the composting process is reduced by 24%; the methane emission in the composting process is obviously reduced by more than 80%, and the total greenhouse gas emission in the composting process is reduced by 55%; and the raw materials adopted by the additive are low in price and simple and convenient to use, and cannot accumulate in the environment to generate new chemical pollution.

Description

technical field [0001] The invention belongs to the technical field of resource utilization of organic wastes, and particularly relates to an additive for reducing the emission of ammonia gas and greenhouse gas in a composting process and its application. Background technique [0002] In recent years, my country's intensive animal husbandry has developed rapidly, accompanied by a large amount of livestock and poultry waste (about 4 billion tons per year). Composting is the most important treatment method for converting livestock and poultry manure into organic fertilizer. my country produces 30 million tons of commercial organic fertilizer through composting every year. However, a large amount of nitrogen (16% to 74%, with an average of 40%) in the composting process of livestock and poultry waste is replaced by NH 3 , N 2 O and other forms are lost to the environment, becoming one of the main sources of frequent haze and greenhouse gas emissions, and also causing waste of...

AI Technical Summary

Problems solved by technology

However, a large amount of nitrogen (16%-74%, 40% on average) in the composting process of livestock and poultry waste is converted into NH 3 , N 2 O and other forms are lost to the environment, becoming one of the main sources of frequent smog and greenhouse gas emissions, and also causing a waste of nitrogen resources

[0003] At present, the emission of greenhouse gases in the composting process is mainly reduced by adding exogenous substances, for example: CN105523804A discloses a method by adding superphosphate; CN106220261A discloses a method by adding biochar; and CN106083331A discloses a method by adding However, in the actual production process, these additives cannot be applied to composting on a large scale due to reasons such as production costs or processes

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