Technological process of producing high-quality organic fertilizer with domestic garbage

Abstract

The technological process for producing high-quality organic fertilizer by using house refuse includes the following steps: separating useful organic material and sewage sludge, making the mixture ofexcrement and urine, pulverized plant straw, nitrogen and phosphorus elements implement anaerobic fermentation to produce impure methane, mixing residual dregs and liquor and making aerobic compost fermentation. The product made up by using said invented method possesses brown colour and loose and uniform granules, and is smellless. The examination shows that total quantity of measured carbon, cellulose and fats is reduced, the colibacillus and ascarid ova are obviously reduced or eliminated, and its fertilizer efficiency is high, and includes organic matter is greater than 40%, total nitrogen 10-12%, total phosphorus 5-7%, total potassium 3-5%, rapidly available nitrogen 223.4 ppM and rapidly available phosphorus 215.8 PPM.

Description

technical field [0001] The invention relates to a method for producing organic agricultural fertilizer, in particular to a method for producing organic fertilizer by using household garbage, especially a process for producing high-quality organic fertilizer by using household garbage. Background technique [0002] Making use of municipal solid waste to produce agricultural fertilizer is one of the methods for processing and utilizing municipal solid waste at present. The existing process for producing agricultural fertilizer from municipal solid waste is as follows: sort the waste first, separate the organic matter from the inorganic matter, and directly compost and ferment the usable organic matter, then mix and stir, dry, crush, granulate, and cool , and then add a large amount of inorganic fertilizers, such as urea, superphosphate, potassium chloride, etc., stir evenly and pack into bags. The agricultural fertilizer produced by the above process method has low nutrient c...

AI Technical Summary

Problems solved by technology

The agricultural fertilizer produced by the above process method has low nutrient content, especially low nitrogen content, and the organic plants in the garbage cannot be fully decomposed and digested, and cannot produce a large amount of organic nutrients that are easy for plants to absorb. It has not been fully reacted, especially adding a large amount of inorganic fertilizer, which not only increases the cost, but also does not react with the added inorganic fertilizer and the domestic waste after fermentation, and the inorganic fertilizer and domestic waste are only in a simple mixed state. Therefore, It can only be called compound or compound fertilizer, and the nutrients in it are mainly inorganic components, and the content of organic nutrients is very small, which is not easy for agricultural plants to absorb; in addition, the various nutrients contained in it, especially the nitrogen contained , is in an unstable state, which is not convenient for its safe storage and agricultural use