A method for resource recycling of scum

A technology of resource utilization and scum, applied in the application, animal feed, additional food elements, etc., can solve the problems of not conforming to the fermented feed with clear fermentation strains, unclear strains of koji, restricting industrialization, etc., to achieve the realization of scum Harmless treatment and resource utilization, eliminating environmental pollution and nutrient waste, and creating economic benefits

Active Publication Date: 2016-04-06
ANHUI AGRICULTURAL UNIVERSITY
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] In the prior art, the scum and the biogas residue produced from the waste liquid of wheat alcohol production are mixed in a certain proportion, and distiller's yeast is added for fermentation, but the strain of distiller's yeast is not clear, and it is not suitable for fermented feed. The fermentation strain must be clarified, and The strain must be the requirement of the strain specified by the Ministry of Agriculture
In addition, the high cost of distiller's yeast, ineffective odor removal and unsuitability for high-moisture fermentation also restrict the industrialization of this technology

Method used

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  • A method for resource recycling of scum

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Experimental program
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Effect test

Embodiment 1

[0021] 1. Cultivation of fermentation strains:

[0022] Bacillus licheniformis D-1 strain was selected as the fermentation strain, and the medium was beef extract peptone medium, and its formula was: beef extract 5.0 g / L, peptone 10.0 g / L, NaCl 5.0 g / L, and the pH was adjusted to 7.0.

[0023] Take 10mL of normal saline with a mass fraction of 0.9% in a test tube, sterilize at 121°C for 20 minutes, cool to 30°C, and pour all the freeze-dried powder of Bacillus licheniformis D-1 into the above-mentioned physiological saline under aseptic condition , shake to make it dissolve, put it in a 30°C incubator for 30 minutes for activation, and set aside;

[0024] Measure 200mL of beef extract peptone medium into a 500mL Erlenmeyer flask, sterilize at 121°C for 20 minutes, cool to 30°C, inoculate the above-mentioned activated strains according to 10% (volume fraction) of the medium volume, and place on a shaker at 30°C Cultivate for 24 hours, and the shaking table rotates at 120-130 r...

Embodiment 2

[0033] In step (1) of this embodiment, the mass ratio of scum and wheat bran is 1:1, and the mass percentage of the overall water content is controlled at about 50%; in step (2), the initial fermentation temperature is 25°C; In step (3), the drying temperature of the wet material is 40° C., and other steps are the same as in Example 1.

Embodiment 3

[0035] In step (1) of this embodiment, the mass ratio of scum and wheat bran mixed is 2:1, and the mass percentage of overall water content control is about 60%; in step (2), the initial fermentation temperature is 30°C; In step (3), the drying temperature of the wet material is 45° C., and other steps are the same as in Example 1.

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Abstract

The invention discloses a method for resource reutilization of scum. The method aims at a process of preparing alcohol from wheat and performs waste-material reutilization on scum obtained by performing separation and precipitation on a generated alcohol waste liquid. The method comprises the steps: mixing scum and wheat bran to obtain a solid mixture; inoculating bacillus licheniformis D-1 strain to the solid mixture, mixing uniformly, fermenting, and drying to obtain protein feed. The beneficial effects comprise that the method employs scum generated during alcohol preparation as the raw material for preparing the protein feed, and thus environmental pollution and nutrition waste caused by scum discarding are eliminated and economic benefit is created; the method employs efficient water-resistant microbe bacillus licheniformis D-1 strain for feed for performing fermentation on scum, thus scum odor is eliminated, and also the produced protein feed is high in quality; and the method has important meaning on harmless processing and resource utilization of scum.

Description

technical field [0001] The invention relates to a waste treatment method in the process of preparing ethanol from wheat, in particular to a method for resource recycling of scum produced after separation and precipitation of distiller's grains. Background technique [0002] my country is a country with serious shortage of protein feed. According to statistics, in 2012, the national protein feed supply was 22 million tons, and the demand was 66 million tons. A large amount of protein feed depends on imports. Therefore, it is of great significance to actively develop new feed resources, especially protein feed with microbial activity, to make up for the shortage of protein feed in the market and improve feed safety and utilization. [0003] At present, alcohol production is mainly obtained through biological fermentation. The raw materials for alcohol production are mainly starch, and alcohol is produced through the action of enzymes. The starchy raw materials mainly include ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K10/12A23K10/38A23K10/18A23K20/147
CPCY02P60/87
Inventor 李吕木康连虎徐雅芫
Owner ANHUI AGRICULTURAL UNIVERSITY
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