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Method for treating vinegar residue by horizontal anaerobic reactor

An anaerobic reactor and vinegar lees technology, which is applied in the anaerobic field, can solve problems such as prolonging the delay period of gas production, high vinegar grains, and the impact of mass transfer in anaerobic digestion systems, and achieve the goal of improving treatment efficiency and tolerance Effect

Inactive Publication Date: 2016-06-22
JIANGNAN UNIV
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  • Application Information

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Problems solved by technology

[0005] However, the solid content of vinegar grains is high, which affects the mass transfer of the anaerobic digestion system, and the contact between fermentation microorganisms and the substrate vinegar grains is not sufficient, which may easily lead to local inhibition or prolong the delay period of gas production

Method used

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  • Method for treating vinegar residue by horizontal anaerobic reactor
  • Method for treating vinegar residue by horizontal anaerobic reactor
  • Method for treating vinegar residue by horizontal anaerobic reactor

Examples

Experimental program
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Embodiment 1

[0022] Anaerobic digestion reaction in a 10L horizontal anaerobic reactor ( figure 1 ); the reactor mainly includes a stainless steel fermentation tank with an effective volume of 8L; a set of temperature control and heat preservation systems; a set of mixing systems, including mixers, reducers and sealing devices. The temperature is set at 37°C, and the daily feeding amount is added twice, with an interval of 12 hours between each time. The stirring method is to stir for 1 hour after feeding, and adjust the daily output amount according to the liquid level position of the reactor to ensure that the reactor The volume of the fermented product was stable at about 8L. The properties of vinegar grains are shown in Table 1 below.

[0023] Table 1 Properties of vinegar lees

[0024]

[0025] Inoculate anaerobic sludge in a horizontal anaerobic reactor, and use vinegar grains as a substrate for continuous anaerobic digestion; in the process of anaerobic digestion, the gradient ...

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Abstract

The invention discloses a method for treating vinegar residue by a horizontal anaerobic reactor, and belongs to the technical field of anaerobism. Inside the horizontal anaerobic reactor is inoculated anaerobic sludge generating methane, the vinegar residue as the substrate is continuously digested anaerobically, and load on the horizontal anaerobic reactor goes up in gradient during anaerobic digestion. Organic matters can be degraded while generating biomass gas such as methane, the reactor of 8 L effective volume is filled with anaerobic sludge, gas production reaches 16 L when feed load is 8.2 g TS / L day, dry matter gas production per unit reaches 243.9 mL / g TS, and methane content remains at 50%. By the method, organic matter in the vinegar residue can be effectively used to produce methane, the process is simple and environment friendly, and certain economic benefits can earn as treating the vinegar residue.

Description

technical field [0001] The invention relates to a method for treating vinegar grains by adopting a horizontal anaerobic reactor, belonging to the technical field of anaerobic. Background technique [0002] Vinegar grains are by-products of the vinegar making process. The main raw materials for making vinegar are wheat bran, sorghum and a small amount of broken rice. After fermentation and brewing, vinegar is extracted. The water content of vinegar grains ranges from 65% to 70%, and the content of crude protein is 6% to 10%, and crude fat is 2% to 5%. , Nitrogen-free extract 20%-30%, ash content 13%-17%, calcium 0.25%-0.45%, phosphorus 0.16%-0.37%. my country is rich in vinegar grain resources, for example, the vinegar industry in Shanxi province produces and discharges about 3 million tons of vinegar grains every year. However, because vinegar grains have less soluble solids, high acidity, slow decay, and contain more crude fibers, they are typical representatives of cellu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P5/02
CPCC12P5/023Y02E50/30
Inventor 阮文权周云龙赵明星
Owner JIANGNAN UNIV