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Peristaltic anaerobic solid-state fermentation device used for organic acid fermentation

An anaerobic solid-state fermentation and organic acid technology, which is applied to special-purpose bioreactors/fermenters, biochemical cleaning devices, enzymology/microbiology devices, etc., can solve the problems of high energy consumption, heat transfer, and Uneven quality, microbial growth hazards and other problems, to achieve the effect of simple structure, shortened cycle, and reduced energy consumption

Inactive Publication Date: 2012-10-24
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

One of the difficulties in the process of hydrolysis and acidification of solid waste is uneven heat transfer and mass transfer. The traditional method is to add a stirrer to the reactor to stir the solid material to enhance heat transfer and mass transfer. However, due to the High solid content, resulting in high energy consumption, poor effect of stirring operation, and its shear force will cause harm to the growth of microorganisms and other consequences

Method used

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  • Peristaltic anaerobic solid-state fermentation device used for organic acid fermentation
  • Peristaltic anaerobic solid-state fermentation device used for organic acid fermentation

Examples

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Embodiment 1

[0015] Fully mix the corn stalks pretreated by steam explosion with domestic garbage outside the tank, inoculate the anaerobic sludge from the sewage treatment plant, and then move them into the reactor from the feed port, seal it, and start the fermentation of organic acids . The period is 10 days, and the temperature is controlled at 35-40°C. During the fermentation process, the short rod inside the reactor swings at a horizontal angle of ±45 degrees with the fixed axis as the axis, once every 30 minutes, and is symmetrical at the same height when swinging. The two short rods form a group, and the other group alternately acts on the material, and the movement of the solid material in the reactor is strengthened through the staggered movement between the short rods. During the fermentation process, every 8 hours, the acidified liquid stored under the filter layer is transported to the top of the tank through a peristaltic pump, and evenly sprayed on the top of the material th...

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Abstract

The invention discloses a peristaltic anaerobic solid-state fermentation device used for organic acid fermentation. The invention is characterized in that a stub driven by electricity and connected on a fixed shaft can sway along the axle center to strengthen the motion of the solid-state material in a reactor, thereby improving the mass and heat transfer in the reactor and reducing the energy consumption; a filter layer is arranged in the device for realizing the solid-liquid separation of the material; acidizing fluid rich in thalluses stored under the filter layer is conveyed to the top ofa pot body by a peristaltic pump and then sprayed on the material uniformly by a spraying head for secondary fermentation, thereby being favorable for further shortening the fermentation period and saving water and energy.

Description

【Technical field】 [0001] The invention belongs to the field of organic acid fermentation, in particular to a device for peristaltic anaerobic solid-state fermentation of organic acid. 【Background technique】 [0002] With the development of social and economic activities and production, human living standards have been improved rapidly, but there have been many environmental problems, and the increasing solid waste is one of them. Most solid wastes, such as agricultural waste and daily garbage, are rich in degradable organic matter, which can be converted into valuable products through microbial degradation, which can not only reduce environmental pollution, but also bring certain economic benefits. Therefore, solid waste The anaerobic fermentation technology is a promising technology. [0003] In the entire technical process of anaerobic solid-state fermentation, the hydrolysis and acidification of solid waste is one of the rate-limiting steps. Therefore, strengthening the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12M1/02
CPCC12M41/34C12M21/16C12M41/18
Inventor 陈洪章张翔
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI