Suspension-type vinasse fermented liquid fertilizer and preparation method thereof

Abstract

The invention relates to suspension-type vinasse fermented liquid fertilizer and a preparation method thereof. The suspension-type vinasse fermented liquid comprises, by weight, 85-90 parts of mother liquor treated by vinasse fermentation liquor, 1-2 parts of suspension stabilizers, 3-5 parts of urea, 1-3 parts of diammonium phosphate and 2-6 parts of potassium sulphate. The preparation method includes the steps of vinasse pretreatment, anaerobic fermentation, solid-liquid separation, grinding, vibrating-screen separation, product compounding, product packaging and the like. The suspension-type vinasse fermented liquid fertilizer and the preparation method thereof have the advantages that the high-efficiency liquid fertilizer with high economic added value is produced, so that crop yield can be increased, fruit quality and soil fertility can be improved, and crop pests can be prevented and reduced.

Description

technical field [0001] The invention belongs to the field of fertilizers, and in particular relates to a suspension-type distiller's grain fermentation liquid fertilizer and a preparation method thereof. Background technique [0002] In the liquor brewing process, the residue after distilling alcohol or alcoholic beverages from grains is called distiller's grains. Distiller's grains are high in organic matter, rich in protein, cellulose, starch, etc., rich in nitrogen, phosphorus, potassium, calcium and various trace elements, and are also perishable, degenerate, smelly, and breed mosquitoes and flies. Distiller's grains anaerobic fermentation technology has outstanding advantages such as high resource conversion efficiency and wide applicability of raw materials, but at present, a large amount of fermentation residue formed by large-scale distiller's grains anaerobic fermentation projects is directly discharged into the environment due to reasons such as inconvenient transp...

AI Technical Summary

Problems solved by technology

Distiller's grain anaerobic fermentation technology has outstanding advantages such as high resource conversion efficiency and wide applicability of raw materials, but at present, a large amount of fermentation residue formed by large-scale distiller's grain anaerobic fermentation projects is directly discharged into the environment due to inconvenient transportation and treatment costs. Cause eutrophication of environmental water body, increase of nitrate nitrogen concentration in groundwater and regional soil eutrophication, etc.

For the purpose of environmental protection, the traditional biochemical-physical chemical treatment process not only consumes the organic matter and nutrients in the fermentation residue and discharges them up to the standard. Although it protects the environment, the cost is too high, energy is consumed and nutrients in the residue are wasted. An ideal technology that can not only obtain a certain economic benefit, but also achieve the reduction, recycling and harmless treatment of the fermentation residue has not been found

[0003] Distiller's grains anaerobic fermentation liquid has obvious effects on supplementing the nutrients needed for plant growth, stimulating plant physiological activity, and inhibiting the growth of pathogenic microorganisms. The anaerobic fermentation liquid has high lignin and cellulose content, the viscous liquid is inconvenient to apply, and the large amount of local application results in crusting on the soil surface, which is not conducive to plant growth. These factors seriously restrict the resource utilization of distiller's anaerobic fermentation liquid. Farmers use The enthusiasm is not high, which limits the feasibility of agricultural consumption to a certain extent

Difficulty in digesting distiller's grain anaerobic fermentation liquid also directly limits the promotion and long-term efficient and stable operation of distiller's grain biogas project

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