A preparing method of a long-acting organic fertilizer

Abstract

A preparing method of a long-acting organic fertilizer is provided and belongs to the technical field of agrochemistry. According to the method, a humus forming amount is increased through raw material formula regulation, microbial inoculum improvement to inhibit acidification and ammonification, an aerobic compost fermentation process is accelerated through equipment of a compost process, and ammonia nitrogen in fermentation tail gas is recovered to prepare guano phosphorite. The method has characteristics of high innovation, simple steps, a low equipment investment, and convenient preparation, and the produced organic fertilizer is stable and long-acting in fertility, high in humus contents and good in environment benefit and has good popularization value.

Description

technical field [0001] The invention belongs to the technical field of agricultural chemistry, and more specifically relates to a long-acting organic fertilizer manufacturing technology. Background technique [0002] A large amount of organic solid waste, such as straw, garbage and excrement, will be produced in our country every year. How to make rational use of these wastes is a very difficult task in recycling and harmless treatment. These wastes contain a large amount of degradable organic substances, diseases and insect pests and other substances, and cannot be used directly. At present, the most common way is to compost them. Composting refers to the process of fermenting degradable organic matter into relatively stable and harmless humus through the action of microorganisms under specific temperature, humidity, and ventilation conditions. Among them, high-temperature aerobic composting has the advantages of high fermentation temperature, relatively short time, less o...

AI Technical Summary

Problems solved by technology

In many cases, the nitrogen in commercial organic fertilizers cannot exceed 2%. On the other hand, due to the lack of optimization and screening of fermenting microorganisms, the fermentation process is severely acidified and corrupted, and the loss of odor gas is large, and the fertilizer yield is not high. In order to maintain a certain volume, many organic fertilizer factories have to add a large amount of weathered coal, bio-semi-coke, and even clay, which damages the reputation of organic fertilizers; there is a lack of reasonable deployment and necessary pretreatment methods in the compost raw material formula. It is not conducive to the formation of humus, and the degree of humification of organic fertilizers is low

There is no effective improvement in composting equipment, and there are no countermeasures for temperature, moisture, ventilation, stirring, and ammonia gas recycling, which eventually leads to slow fermentation. Generally, it takes 45 days or longer to meet the basic requirements of decomposing. The composting production process less travel fee

[0005] The Chinese patent "A method for preparing agricultural and forestry organic substrates by using waste dried bamboo shoot shells (application number CN201110371834.X)" is based on the percentage by weight of 80% to 90% of the pretreated dry bamboo shoot shells and 10% to 20% of chicken manure. Mix the chicken manure evenly, and adjust the water content by weight to 60%~65%; add the microbial agent, and stir evenly, wherein the microbial agent contains bacillus and actinomycetes, and the bacterial content is greater than 0.5×10 8 per gram; the influence of CN ratio and lignin content of raw materials is not considered; there is no reasonable consideration in the selection of microbial agents

[0006] Traditional composting completely relies on microbial activity during the composting fermentation process to cause changes in compost temperature; the aeration of the fermentation process mainly relies on regular turning, which is labor-intensive and low in efficiency. Due to the formation of an anaerobic environment locally, the overall aerobic composting process will inevitably appear localized. The reduction of small environment, the formation of reductive odor volatiles, coupled with the lack of effective recycling methods for odorous gases, traditional composting plants have become a serious source of air pollution

Although there have been many reports on the development of composting reactors in recent years, the considerations are still incomplete. For example, the Chinese utility model patent "A Composting Organic Fertilizer Aerobic Composting System (CN201520997255. X)" only considers composting and ventilation needs, and rely on propeller propulsion, which has high resistance and low efficiency