Method for pretreating beer waste for biochemical utilization

A pretreatment and waste technology, applied in biochemical equipment and methods, microorganisms, microorganisms, etc., can solve the problems of complex process, low yeast nutrient release rate and high cost

Inactive Publication Date: 2011-10-12
FUJIAN AGRI & FORESTRY UNIV
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Problems solved by technology

[0007] The pretreatment of the above-mentioned beer waste yeast sludge before utilization is costly and complicated, and the nutrient release rate of the yeast after treatment is not high. The

Method used

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  • Method for pretreating beer waste for biochemical utilization
  • Method for pretreating beer waste for biochemical utilization
  • Method for pretreating beer waste for biochemical utilization

Examples

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specific Embodiment 2

[0028] Fresh beer yeast sludge containing 21.1% dry yeast, beer raw wastewater, ozone generator, fermenter, 8010 strain;

[0029] The following three culture media were used for cultivation: (1) Beer wastewater without ozone treatment, sterilized by high-pressure steam at 121°C for 45min. (2) Beer wastewater is directly fed into the ozone generated by the ozone generator. The amount of ozone feeding is controlled as follows: the treatment time is 2 minutes, the total feeding amount is 0.5g ozone / g yeast slime dry matter, and sterilized by high-pressure steam at 121°C for 45 minutes. (3) The 6 times diluted fresh waste yeast sludge is directly fed into the ozone generated by the ozone generator. The amount of ozone input is controlled as follows: the treatment time is 2 minutes, and the total amount of input is 0.5g ozone / g yeast sludge dry matter, 121°C under high pressure Steam sterilization for 45min. The pretreated yeast sludge and (2) pretreated beer wastewater are mixed ...

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Abstract

The invention provides a method for pretreating beer waste for biochemical utilization. The method comprises the following steps: carrying out ozone wall breaking and sterilization on one or mixture of beer waste water, sludge, waste and fresh beer yeast slurry so as to increase leaching of nutrient substances of yeast content, wherein the ozone admission amount is 0.3-0.8g of ozone/ g of waste beer dried substances; and carrying out high-pressure steam sterilization on samples subjected to ozone treatment at 121 DEG C for 45 minutes, thus the samples subjected to high-pressure steam sterilization can used for microorganism yeast culture. The beer waste pretreated by the method provided by the invention has the advantages that the nutrient substance release rate can be greatly improved, the content of amino nitrogen in a culture medium is improved by 4-5 times, and the amino nitrogen yield achieves 3-5 percent, thus the pretreated beer waste serving as the culture medium is beneficialto microorganism culture.

Description

technical field [0001] The invention relates to a pretreatment method for biological utilization of beer fermentation waste, and belongs to the technical field of light industry fermentation. Background technique [0002] Ozone (0 3 ) is oxygen (0 2 ) is an allotrope, composed of 3 oxygen atoms, which is an unstable gas with a pungent odor at normal temperature and pressure, and is easily decomposed into oxygen. Due to its strong oxidizing properties, ozone has been widely used in various fields, such as food, drinking water, sewage treatment and disinfection, and sludge reduction. Advantages of ozone treatment: (1) It can be manufactured at the production site without storage and transportation, which reduces the risk of operation; (2) Ozone has a strong oxidizing effect and a fast reaction speed. It can kill bacterial propagules, spores, viruses, fungi, protozoan cysts, etc., and its inactivation effect is 600-3000 times faster than chlorine disinfectants; (3) The by-pr...

Claims

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Application Information

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IPC IPC(8): C12N1/00C12N1/20
Inventor 吴丽云关雄黄俊仁何金清
Owner FUJIAN AGRI & FORESTRY UNIV
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