Technique for manufacturing active phosphorus organic fertilizer from pig manure

Abstract

The invention discloses a technique for manufacturing an active phosphorus organic fertilizer from pig manure, which comprises the following steps: raw material pretreatment, anaerobic fermentation, aerobic fermentation and aging. The weight percent of the raw material pig manure on dry basis is 70-95%. An auxiliary material with the organic content of higher than 60% is utilized to regulate the total water content of the pig manure and auxiliary material to 50-70%; an organic matter decomposing inoculant is added until the effective viable count in the total material is up to 0.5 million / g; and in the aerobic fermentation period, a phosphorous acidic matter is utilized to regulate the pH value to be greater than or equal to 5.5 and smaller than or equal to 8.5. The technique can effectively treat the cultivation farm excrement, enhances the index stability of the fertilizer, greatly reduces the effluvium generated in the fertilizer production process, and enhances the phosphorus utilization ratio and humus content. The active phosphorus organic fertilizer has the advantages of high thermal insulation, high fertility retention and high air permeability, contains more activated phosphorus element, and thus, has excellent promotion effects on crop root system growth, seed development and the like.

Description

【Technical field】 [0001] The invention relates to a process for making active phosphorus organic fertilizer by using pig manure, and belongs to the technical field of agricultural fertilizer production. 【Background technique】 [0002] At present, the country's management and control of waste in the breeding industry is becoming more and more strict, and the treatment of animal excrement is facing a severe situation. Many farms are facing the situation of rectification, closure and relocation. In fact, breeding enterprises can easily and effectively deal with animal waste to make it harmless, reduce, and recycle, so that they can get out of subsidizing others to take away pig manure or sell it at a low price, or if it is not handled in time dilemma, but also can get a lot of profits from the sale of fertilizers. [0003] Due to the lack of professionals in solid fermentation technology and practical work experience, most enterprises will produce foul odors during the ferment...

AI Technical Summary

Problems solved by technology

[0004] Refer to "A simple method for producing high-efficiency bio-organic compound fertilizer by using pig manure" (CN200910112561) and even other patents on organic fertilizers made from different raw materials. The ratio and other indicators are unreasonable, resulting in problems such as high pH, ​​ammonia odor, and unstable nutrient and organic matter indicators during the fermentation process.

For example: 100 tons of pig manure with a moisture content of 85%, when dried to 70% moisture, only 50 tons of pig manure will be left. Very inappropriate, at least it will cause very unstable nutrient and organic matter indicators