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Method for pretreating beer waste for biochemical utilization

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

Inactive Publication Date: 2013-03-27
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 treatment of beer wastewater and sludge is similar. Therefore, people are looking for a clean , convenient, efficient, and low-cost treatment methods to provide support for its biological reuse

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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

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specific Embodiment 2

[0029] Fresh beer yeast sludge containing 21.1% dry yeast, beer raw wastewater, ozone generator, fermenter, 8010 strain;

[0030] 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

A pretreatment method for biochemical utilization of beer waste, including beer wastewater, sludge, and waste fresh beer yeast slime alone or in combination, is treated with ozone wall breaking and disinfection, so as to increase the leaching of nutrients in the bacteria. The amount of ozone introduced is 0.3-0.8g ozone / g dry matter of beer waste, and the samples after ozone treatment can be used for fermentation and cultivation of microorganisms after being sterilized by high-pressure steam at 121°C for 45 minutes. After the above pretreatment, the release rate of nutrients is greatly improved, the amino nitrogen content of the medium is increased by 4-5 times, and the yield of amino nitrogen is 3-5%, which is very beneficial to the cultivation of microorganisms as a medium.

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