Preparation method of molasses for recycling

Abstract

The invention discloses a preparation method of molasses for recycling. The preparation method comprises the following steps of: firstly, preparing a culture medium, a molasses culture solution tank A, a molasses culture solution tank B, a molasses culture solution tank C as well as a yeast fermented inoculum; secondly, selecting different saccharomycetes and combining for fermenting to obtain alcohol and alcohol slops, wherein the fermenting is divided into three phase; and thirdly, after the molasses is fermented, collecting the alcohol, washing indecomposable macromolecular organic matters in residual alcohol slops with water; decomposing the washed macromolecular organic matters to form soluble bioactive micro-molecules by adopting a chemical activation mode; and chelating and mixing the soluble bioactive micro-molecules to form organic soluble fertilizer with different formulas. According to the preparation method and the characteristics of different saccharomycetes, in particular yeast which can be used for fermenting non-fermentable sugar, the fermentation rate of cane molasses for producing the alcohol is increased by fully utilizing sugers of various types in the molasses, so that the production efficiency of the equipment and the labor efficiency can be increased and the energy consumption is reduced.

Description

technical field [0001] The invention relates to a preparation method for comprehensive utilization of molasses, in particular to a preparation method for comprehensive utilization of molasses which increases the bacterial protein content of molasses fermentation alcohol waste liquid and enhances the use value in agriculture. Background technique [0002] China is the fourth largest producer of sugar (after Brazil, India, and the European Union). There are about 600 sugar factories in my country with a daily processing capacity of 700,000 tons, including 444 sugarcane factories with a daily processing capacity of 650,000 tons; Guangxi, Guangdong, Yunnan, and Xinjiang account for the total sugar production in the country. It is the main sugar-producing province in my country. [0003] Cane molasses is a by-product of sucrose production. It is dark brown and mainly contains a large amount of fermentable sugar, about 24%-36% of sucrose, and about 12%-24% of other sugars. It also...

AI Technical Summary

Problems solved by technology

Chinese patent 99121907.4 "Technical method for efficient fermentation of alcohol using waste molasses as raw material", the advantage considers that the substrate inhibits fermentation, and adopts staged fermentation method without yeast, which can improve fermentation to a certain extent, but the selected yeast is all based on glucose, etc. Reducing sugar is a carbon source and cannot fully utilize other sugars in cane molasses

[0004] In recent years, due to the improvement of sugar refining technology, the fermentable sugar in molasses has decreased, non-fermentable sugar has increased, and ash and colloidal substances have increased. Some fermentation methods and yeasts that were suitable in the past are no longer suitable for efficient fermentation of existing raw materials.

At the same time, molasses fermentation produces alcohol by-products, which seriously pollutes the environment. Each volume of alcohol produced will produce 12-14 times the volume of distillation waste liquid containing COD 8-12×104mg / L and BOD 54-6×104mg / L

At present, there is no unified standard treatment method in my country

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