Method for preparing organic fertilizer by using livestock manure

Abstract

The invention relates to a method for preparing an organic fertilizer by using livestock manure, comprising the following steps: firstly uniformly stirring and mixing livestock manure and an additive,and then adding 0.02-0.05% of a leavening agent, uniformly mixing to obtain mixed materials, adding water until moisture content of the mixed materials is 60-70%, hydraulically packing the mixed materials into a cuboid block, sealing and packaging with a plastic bag, carrying out anaerobic fermentation at room temperature, and obtaining an organic fertilizer after the fermentation. The method issimple to operate, will not pollute the environment, and has no site limitation. The fermentation time is shortened, and the cost is reduced. Adverse effects of traditional building fermentation heap-build fermentation are solved, and the annual scale production becomes possible anytime and anywhere. The organic fertilizer prepared by the invention can be used for fertilization of crops, also canbe used as a culture medium for soilless culture, and also can be used as a culture medium for edible fungi. In addition, due to good fermentability and nutrient properties, the organic fertilizer canalso be used as an animal feed for earthworms, yellow mealworms, fly maggots, fish and shrimps, pigs, cows and sheep.

Description

technical field [0001] The invention relates to a method for preparing organic fertilizer, in particular to a method for preparing organic fertilizer by utilizing livestock and poultry manure, and belongs to the technical field of fertilizer preparation. Background technique [0002] With the rapid development of the intensification and scale of the livestock and poultry breeding industry, the discharge of livestock and poultry waste has increased sharply, and the environmental pollution problems caused by it have become increasingly prominent. At present, only about 30% of livestock and poultry waste in my country has been treated initially, more than 60% have not been used in time, and most of them have been discarded at will, causing a huge waste of organic fertilizer resources; on the other hand, due to livestock and poultry manure, etc. The waste contains various pathogenic microorganisms, parasite eggs and toxic and harmful substances. If it is discharged randomly witho...

AI Technical Summary

Problems solved by technology

Although these biological treatment methods can produce certain effects, conventional composting has a slow fermentation speed, takes a long time to process, and occupies too much land. During the fermentation process, it still pollutes the environment extensively and causes part of the nutrient loss, which is not conducive to organic waste. resource utilization

Because livestock and poultry manure is usually mixed with urine or flushing sewage, and has a high water content, some existing equipment can perform dry-wet separation through a dry-wet separator, and dry matter is fermented, while wet manure still cannot be treated indiscriminately.

For various reasons, farmers are still unwilling to use it, and often discharge it at will, so that manure treatment is still an important source of environmental pollution

This not only causes eutrophication of some water bodies, pollutes the air around the farms, but also spreads diseases, affecting the quality and safety of agricultural and animal husbandry products and human health

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