Anaerobic fermentation device and application thereof

A technology of anaerobic fermentation and heating device, applied in fermentation, biochemical cleaning device, enzymology/microbiology device, etc., can solve the secondary pollution of biogas slurry and biogas residue, long operation cycle of digestion device, and cannot adapt to low temperature environment and other problems, to achieve the effect of considerable economic benefits, small footprint, compact and reasonable device layout

Inactive Publication Date: 2017-06-13
NANKAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at the problems of long operation period of the digestion unit, inability to adapt to low temperature environment, low gas production, and secondary pollution caused by biogas slurry and biogas residue, this invention designs a miniaturized continuous operation that integrates gas production, gas collection, and slag discharge. The device provides production and research support for anaerobic digestion of biomass solid waste in rural areas

Method used

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  • Anaerobic fermentation device and application thereof
  • Anaerobic fermentation device and application thereof
  • Anaerobic fermentation device and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0028] 1) Using cow dung as biomass, process dry cow dung to a particle size of 2mm;

[0029] 2) Add the cow dung together with the domesticated anaerobic active sediment into the fermentation bin of the fermentation device to 300L from the feed port, the TS is 5%, start the motor to continuously heat and maintain the temperature at 45°C, and turn on the stirring device Forward rotation, continuous fermentation for 15 days;

[0030] 2) The daily production of biogas is measured by the flow meter at the biogas tank, and the maximum can reach 390ml / g TS;

[0031] 3) When the biogas production starts to decline on the 15th day, open the discharge port located under the fermentation device, set the stirring device to reverse mode, discharge 80% of the fermented product in the tank, feed again and repeat the above process.

Embodiment 3

[0033] 1) Using kitchen waste as biomass, treat kitchen waste to a particle size of 3mm;

[0034] 2) Add kitchen waste and acclimated anaerobic active sediment into the fermentation chamber of the fermentation device from the feed port to 350L, its TS is 8%, start the motor to continuously heat and maintain the temperature at 55°C, and start stirring The device was rotated forward and fermented continuously for 13 days;

[0035] 2) The daily production of biogas is measured by the flow meter at the biogas tank, and the maximum can reach 430ml / g TS;

[0036] 3) When the biogas production starts to decline on the 10th day, open the discharge port located under the fermentation device, set the stirring device to reverse mode, discharge 80% of the fermented product in the tank, feed again and repeat the above process.

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Abstract

The invention provides a continuous-operation anaerobic device integrated with small-size gas producing, gas collecting and deslagging functions according to medium/high temperature anaerobic digestion principle. The device is composed of a feed inlet, a tank, a heating device, an insulating layer, an observation holes, a stirring device, an online detection device, an exhaust hole, a discharge hole and a methane collector. Raw materials of the device can be organic waste materials of agriculture waste, poultry excrement, sludge, landscape and greening waste, urban kitchen waste and the like, and the maximum methane production of 450ml/g TS can be realized; the anaerobic device has the advantages of good fermentation effect due to unique design and simpleness in operation.

Description

technical field [0001] The invention relates to anaerobic fermentation technology, in particular to an anaerobic fermentation device and its application. Background technique [0002] Today, with the depletion of fossil fuels and the worsening global energy crisis, energy shortage and environmental pollution have become two major problems faced by countries all over the world. In the future, the competition of science and technology and social development for resources, especially the abundant, renewable and pollution-free biomass resources will become increasingly fierce. However, the utilization rate of biomass resources, especially fiber by-products mainly agricultural and forestry wastes, is very low in the world at present, and the annual economic losses and environmental pollution caused by agricultural and forestry waste incineration and landfilling cannot be underestimated. my country is a large agricultural country. With the continuous advancement of agricultural s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12M1/34C12M1/107C12M1/02C12P5/02C02F11/04
CPCC02F11/04C12M21/04C12M27/02C12M41/12C12M41/22C12M41/26C12M41/34C12M41/44C12P5/023Y02E50/30
Inventor 李维尊鞠美庭杨茜陈昱仪亮随鹏楚春礼
Owner NANKAI UNIV
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