Method for producing organic fertilizer from reed soda pulping process black liquor and corn fermentation glutamic acid waste liquor

Abstract

The invention discloses a method for producing an organic fertilizer from reed soda pulping process black liquor and corn fermentation glutamic acid waste liquor and belongs to the field of organic fertilizers. The method comprises the procedures of mixing the black liquor collected from the reed soda pulping process with the waste liquor collected from the process of producing glutamic acid through corn fermentation and producing the organic fertilizer. The procedure of mixing the black liquor collected from the reed soda pulping process with the waste liquor collected from the process of producing the glutamic acid through corn fermentation comprises the steps of storage of the black liquor, storage of the waste liquor and mixing of the black liquor and the waste liquor. The procedure of producing the organic fertilizer comprises the steps of evaporation and concentration, spraying granulation, cooling, sieving and film coverage, so that an organic fertilizer finished product is obtained. According to the method, the black liquor generated through the reed soda pulping process is alkaline and rich in organic matter, natural fulvic acid and other elements; the waste liquor generated in the process of producing the glutamic acid through corn fermentation is acidic and high in nitrogen content. The black liquor and the waste liquor are mixed in a certain proportion, so that the PH values and nutrition of the two types of liquor supplement one another, and after the concentration is raised through evaporation and concentration, the organic fertilizer high in content of the organic matter and nutrition is produced through the spraying granulation technology.

Description

technical field [0001] The invention belongs to the extension of the technical field of organic fertilizers, in particular to a method for producing organic fertilizers by mixing black liquor from reed soda pulping and glutamic acid waste liquor from corn fermentation. 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",...

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Problems solved by technology

[0003] At present, no method has been found to produce organic fertilizer by mixing black liquor from reed soda pulping and glutamic acid waste liquor from corn fermentation