Method for producing organic fertilizer from corn stalk alkaline pulping black liquor and corn fermentation glutamic acid waste liquor

Abstract

The invention discloses a method for producing organic fertilizer from corn stalk alkaline pulping black liquor and corn fermentation glutamic acid waste liquor and belongs to the field of organic fertilizer. The method comprises the two processes of mixing of the black liquor collected after alkaline pulping of corn stalks and the waste liquor collected after glutamic acid production through corn fermentation and production of the organic fertilizer, wherein the process of mixing of the black liquor collected after alkaline pulping of the corn stalks and the waste liquor collected after glutamic acid production through corn fermentation comprises the steps of black liquor storage, waste liquor storage and mixing of the black liquor and the waste liquor, and the process of production of the organic fertilizer comprises the steps of evaporation and concentration, spraying granulation, cooling, screening, film enveloping and finished organic fertilizer packaging. By means of the method, the PH values and nutrients of the black liquor and the waste liquor are complementary in the production process of the organic fertilizer, and after the concentration is increased through evaporation and concentration, the organic fertilizer with high organic matter and nutrient content is produced through the spraying granulation technology.

Description

technical field [0001] The invention belongs to the technical field of organic fertilizers, in particular to a method for producing organic fertilizers by using corn stalk alkaline pulping black liquor and corn fermentation glutamic acid waste liquid. Background technique [0002] In order to implement the No. 1 Document of the Central Committee in 2015 and the spirit of the National Agricultural Work Conference, the Ministry of Agriculture aimed at the current excessive use of chemical fertilizers, blind use of high agricultural production costs, waste of resources, arable land consolidation, soil acidification and low utilization of organic fertilizer resources, and fertilization structure Imbalance, heavy chemical fertilizer light organic fertilizer and other phenomena. On February 17, 2015, the "Action Plan for Zero Growth in Fertilizer Use by 2020" was formulated and issued. It clearly stated that in addition to "refinement", "adjustment" and "reform", the future techni...

AI Technical Summary

Problems solved by technology

[0002] In order to implement the No. 1 Document of the Central Committee in 2015 and the spirit of the National Agricultural Work Conference, the Ministry of Agriculture aimed at the current excessive use of chemical fertilizers, blind use of high agricultural production costs, waste of resources, arable land consolidation, soil acidification and low utilization of organic fertilizer resources, and fertilization structure Imbalance, heavy chemical fertilizer light organic fertilizer and other phenomena