Industrial vinegar residue waste solid anaerobic fermentation methanogenesis method

A solid-state anaerobic fermentation and waste technology, applied in fermentation, waste fuel and other directions, can solve the problems of long reaction time, large demand for inoculum, and the solid-state fermentation process of vinegar residue has not been well developed and utilized. Achieve the effect of improving fermentation efficiency and reducing water consumption

Inactive Publication Date: 2017-07-07
BEIJING UNIV OF CHEM TECH
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AI Technical Summary

Problems solved by technology

[0003] At present, the solid-state anaerobic digestion process has received more and more attention, but the solid-state fermentation process of vinegar residue has not been well developed and utilized.
This is due to the fact that solid-state fermen

Method used

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  • Industrial vinegar residue waste solid anaerobic fermentation methanogenesis method

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Embodiment 1

[0017] 1) Pyrolysis of industrial vinegar residue to produce biochar: First, spread the vinegar residue on the ground, place it for 3 days, and then dry it naturally. Take about 100 g of vinegar residue with a total solid content of TS=95.5% and a volatile solid content of VS=90.1%, and place it in a 500 mL fixed-bed pyrolysis and carbonization furnace. After heating for 30 minutes, the temperature was raised from room temperature to 400 °C and maintained at this temperature for 1.5 h, and then naturally cooled to room temperature, the biochar yield could reach 34.8%.

[0018] 2) Solid-state anaerobic fermentation of vinegar residue: get 300g of vinegar residue and add it to a 5L anaerobic reactor. 1302g of inoculated sludge with a solid content of VS=11.0% was added to a 5L anaerobic reactor, and 308g of water was added to make the system TS=15%. Then, according to the mass value being 0.5% of the TS value of the added vinegar residue, 1.432 g of biochar produced after the a...

Embodiment 2

[0020] 1) Pyrolysis of industrial vinegar residue to produce biochar: First, spread the vinegar residue on the ground, place it for 3 days, and then dry it naturally. Take about 100 g of vinegar residue with a total solid content of TS=95.5% and a volatile solid content of VS=90.1%, and place it in a 500 mL fixed-bed pyrolysis and carbonization furnace. After heating for 30 minutes, the temperature was raised from room temperature to 450 °C, maintained at this temperature for 2 hours, and then naturally cooled to room temperature.

[0021] 2) Solid-state anaerobic fermentation of vinegar residue: get 400g vinegar residue and join in 5L anaerobic reactor, according to the ratio of the volatile solid content of vinegar residue and inoculation sludge is 2.5, take total solid content TS=20.5%, volatile 1389g of inoculated sludge with a solid content of VS=11.0% was added to a 5L anaerobic reactor, and 139g of water was added to make the system TS=20%. Then, according to the mass ...

Embodiment 3

[0023] 1) Pyrolysis of industrial vinegar residue to produce biochar: First, spread the vinegar residue on the ground, place it for 3 days, and then dry it naturally. Take about 100 g of vinegar residue with a total solid content of TS=95.5% and a volatile solid content of VS=90.1%, and place it in a 500 mL fixed-bed pyrolysis and carbonization furnace. After heating for 30 minutes, the temperature was raised from room temperature to 500 °C, maintained at this temperature for 2.5 h, and then cooled to room temperature naturally.

[0024] 2) Solid-state anaerobic fermentation of vinegar dregs: 500 g of vinegar dregs is added to a 5L anaerobic reactor. According to the ratio of the volatile solid content of vinegar dregs to inoculated sludge is 3, the total solid content TS=20.5%, the volatile 1446g of inoculated sludge with solid content VS=11.0% was added to a 5L anaerobic reactor, and 66.1g of water was added to make the system TS=24%. Then, according to the mass value being...

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Abstract

The invention provides an industrial vinegar residue waste solid anaerobic fermentation methanogenesis method and belongs to the field of vinegar residue reuse. The method comprises the steps of 1, drying vinegar residues at the indoor temperature, putting part of dry vinegar residues into a fixed bed pyrolysis carbonization furnace, pyrolyzing at the temperature of 400-500 DEG C, and preparing vinegar residue charcoal; 2, using the prepared charcoal as an additive and adding the charcoal to the vinegar residues, and carrying out solid anaerobic fermentation and producing methane at the temperature of 37 DEG C or so. Compared with the prior art, according to the industrial vinegar residue waste solid anaerobic fermentation methanogenesis method, row materials themselves are converted to an valid, pollution-free and side-effect-free charcoal additive and is combined with solid anaerobic fermentation, in addition to the vinegar residues, no other components enter, the method has the advantages of less water consumption, free of biogas slurry and large volume gas production of solid fermentation, on this basis, the efficiency of anaerobic fermentation gas production is further improved, and a new thought is provided for effective treatment and resource utilization on industrial and agricultural waste.

Description

technical field [0001] The invention belongs to the technical field of vinegar residue reuse, in particular to a method for producing methane by solid-state anaerobic fermentation of industrial vinegar residue waste. Background technique [0002] As a by-product of the vinegar industry, vinegar residue has a huge annual output of about 3 million tons. Because vinegar slag has certain acidity and corrosiveness, its random disposal will cause a certain degree of environmental hazards. Vinegar residue is also a raw material rich in lignocellulose, which is mainly composed of bran and rice husk biomass materials. Traditional treatment methods such as landfill and incineration will not only cause a certain degree of secondary pollution to the environment, but also a waste of resources. The anaerobic fermentation technology is a low-cost, non-polluting method for converting biomass waste into clean and renewable energy. This method can effectively solve the environmental hazards...

Claims

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Application Information

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IPC IPC(8): C12P5/02
CPCC12P5/023Y02E50/30
Inventor 陈畅冯佳昱张继宇刘广青
Owner BEIJING UNIV OF CHEM TECH
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