Concentrated biogas slurry and preparation method thereof

Abstract

The invention discloses concentrated biogas slurry and a preparation method thereof. The concentrated biogas slurry is prepared from, by weight, 60-70 parts of water, 15-20 parts of organic matters, 7-10 parts of amino acids, 3-5 parts of mineral substances and 0.4-1 part of vitamins, wherein the organic matters include starch, cellulose and saccharides, and the mass ratio of starch to cellulose to saccharides is (10-13):(2-4):(1-3). The biogas slurry is subjected to concentration, matching addition and other technological treatment, the contained water is greatly lowered, the contents of amino acids and microelements are increased, and then the requirement for nutrient substances of agricultural plants can be met.

Description

technical field [0001] The invention belongs to the technical field of agriculture, and in particular relates to a concentrated biogas slurry and a preparation method thereof. [0002] technical background [0003] At present, there are many types of fertilizers used in agricultural planting. According to relevant information and market surveys, inorganic chemical fertilizers account for 80% of the usage. The so-called inorganic chemical fertilizers, commonly known as chemical fertilizers, are the most abundant in the market. (N) Fertilizer, common such as urea. Phosphorus (p) fertilizer, common such as superphosphate. Potassium (k) fertilizer, common such as potassium nitrate, etc. [0004] In agricultural planting, the long-term and large-scale use of chemical fertilizers has caused many disadvantages: [0005] One is the problem of soil compaction. There are very few active ingredients in chemical fertilizers that can be absorbed and utilized by plants, such as urea. Ur...

AI Technical Summary

Problems solved by technology

[0006] Second, the quality of agricultural products has changed

At present, people generally report that the taste of fruits and vegetables is not good, because too much chemical fertilizer is used, and too little organic fertilizer and trace element fertilizer are caused;

[0007] Third, the environment is polluted

Biogas residues can be used to make granular organic fertilizers, but for biogas slurry, although it contains a variety of amino acids, trace elements, vitamins and other beneficial elements, there are very few