Method for efficiently removing antibiotics and resistance genes and stabilizing heavy metals in livestock and poultry manure based on ultrahigh-temperature aerobic fermentation technology

Abstract

The invention relates to a method for efficiently removing antibiotics and resistance genes and stabilizing heavy metals in livestock and poultry manure based on an ultrahigh-temperature aerobic fermentation technology. The method comprises the following steps: carrying out fermentation pretreatment, fermentation detection, fermentation control, product inspection and product use on the livestock and poultry manure by adopting an ultrahigh-temperature fermentation inoculant. Through the growth metabolism effect of ultra-high-temperature microorganisms and the heat generated by fermentation, resistance genes and antibiotics in the livestock and poultry manure are efficiently treated, meanwhile, heavy metals in the livestock and poultry manure are stabilized, and an excellent organic fertilizer is generated through the fermentation. The heavy metals are prevented from entering a human body through an enrichment effect to harm human health, and the harm of the resistance genes, the antibiotics and the heavy metals to human is eliminated from the source. The fermentation product of the livestock and poultry manure is used as a good organic fertilizer, and the purposes of reduction, harmlessness, stabilization and recycling of the livestock and poultry manure are achieved. Meanwhile, the ultrahigh-temperature aerobic fermentation technology is expected to become an industrial standard for treating livestock and poultry compost.

Description

technical field [0001] The invention relates to a method for efficiently removing antibiotics and resistance genes and stabilizing heavy metals in livestock and poultry manure based on an ultra-high temperature aerobic fermentation technology, and belongs to the technical field of livestock and poultry manure disposal. Background technique [0002] With the rapid development of the global economy and the continuous increase of the population, the entire human society needs a large amount of meat such as livestock and poultry to ensure a suitable nutritional structure, which requires the breeding of a large number of livestock and poultry to meet the needs of the entire human society. In 2015, the domestic beef cattle inventory was 90.557 million, and in 2020, the domestic beef cattle inventory was 91.382 million. At the same time, the annual domestic beef cattle inventory increased by 0.97%. The annual livestock and poultry manure produced in my country is about 380,000 tons....

AI Technical Summary

Problems solved by technology

[0007] Traditional composting technology cannot completely remove antibiotics and stabilize heavy metals in livestock and poultry manure, resulting in the accumulation of heavy metals in the product, which is mainly due to the fact that the traditional technical specifications are far behind the actual demand

However, most aerobic fermentations have serious heat loss during the composting process, low fermentation temperature, insufficient reaction, long disposal time, limited cost, and emission of odor and other substances during the fermentation process. Long, the content of resistance genes, antibiotics and heavy metals in the product is facing enrichment damage, and the fertility of the fermentation product is low

Most of the existing aerobic fermentation methods cannot effectively meet the disposal speed due to the low fermentation temperature and disposal cycle. At the same time, there is a risk of spreading resistance genes during the fermentation process, and the treatment cost is high. The decomposing effect of sludge is not good, the content of organic matter in the obtained product is low, and there are certain characteristics of heavy metals, resistance genes, antibiotics and other characteristics in the fermentation product

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