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Additive for biogas fermentation

A biogas fermentation and additive technology, applied in fermentation, biological sludge treatment, waste fuel, etc., can solve the problems of low gas production rate and long time, and achieve the effect of improving gas production rate

Inactive Publication Date: 2013-10-23
开化县农村能源办公室
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the start-up period of biogas fermentation is generally longer, especially under low temperature conditions and when the fermentation feed liquid does not reach the ideal pH value, the required fermentation start-up time is longer. gas rate is not high

Method used

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  • Additive for biogas fermentation
  • Additive for biogas fermentation
  • Additive for biogas fermentation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] 1. Production of additives

[0010] It is prepared by uniformly mixing 30 kg of sucrose, 30 kg of flour, 3 kg of yeast powder and 40 kg of starch residue.

[0011] 2. Preparation of biogas digester and feed liquid

[0012] 1. Digester: 8 cubic meters

[0013] 2. Livestock and poultry manure is used as the fermentation raw material, and the percentage concentration of organic matter in the feed liquid of the biogas tank is between 2 and 5% (that is, the biogas has not yet started, and the percentage concentration of organic matter in the feed liquid of the biogas tank should usually be > 5% when the biogas is started), The pH value of the feed liquid is between 5 and 8.5.

[0014] 3. Experiment

[0015] Take 4 kg of the above-mentioned additive, add it to the above-mentioned biogas digester at an outdoor temperature of 0-35°C, and compare the measured data with the start-up time without adding the additive as follows:

[0016]

[0017] Four, show according to abov...

Embodiment 2

[0020] 1. Production of additives

[0021] Mix 40 kg of sucrose, 30 kg of wheat bran, 30 kg of flour, and 4 kg of yeast powder

[0022] be made of.

[0023] 2. Preparation of biogas digester and feed liquid

[0024] 1. Digester: 100 cubic meters

[0025] 2. Use crop stalks as fermentation raw materials, and the percentage concentration of organic matter in the feed liquid of the biogas tank is between 2 and 5% (that is, the biogas has not yet started, and the percentage concentration of organic matter in the feed liquid of the biogas tank should usually be > 5% when the biogas is started). The pH value of the liquid is between 5 and 8.5.

[0026] 3. Experiment

[0027] Take 50 kg of the above-mentioned additive, add it into the above-mentioned biogas digester at an outdoor temperature of 0-35°C, and compare the measured data with the start-up time without adding the additive as follows:

[0028]

[0029] Four, show according to above-mentioned experimental data, ado...

Embodiment 3

[0032] 1. Production of additives

[0033] It is prepared by uniformly mixing 45 kg of sucrose, 20 kg of rice bran, 25 kg of wheat bran and 10 kg of ammonium bicarbonate.

[0034] 2. Preparation of biogas digester and feed liquid

[0035] 1. Digester: 300 cubic meters

[0036] 2. Use aquaculture sewage as the raw material for fermentation, and the percentage concentration of organic matter in the feed liquid of the biogas tank is between 2 and 5% (that is, the biogas has not yet started, and the percentage concentration of organic matter in the feed liquid of the biogas tank should usually be > 5% when the biogas is started). The pH value of the liquid is between 5 and 8.5.

[0037] 3. Experiment

[0038] Take 150 kg of additives and add them to the above-mentioned biogas digester at an outdoor temperature of 0-35°C. The specific data measured and compared with the start-up time without adding additives are as follows:

[0039]

[0040] Four, show according to above...

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Abstract

The invention relates to an additive for biogas fermentation. The additive is mixed from the following components in percentage by weight: 10%-50% of polysaccharide substances, 15%-75% of protein substances, and 0-15% of fatty acid conjugate or nitrogen substances. The additive for the biogas fermentation can be adopted for prompting the fermenting materials to quickly enter a glycolysis way under an anaerobic condition for continuously degrading and quickly and efficiently generating biogas. According to the experimental data, only 0.3Kg / m<3>-0.6Kg / m<3> of additive is added in feed liquid of a biogas digester according to the size of the biogas digester, so that a pH value of the feed liquid can be accelerated to tend to normal, so that the biogas can be generated 15-60 days ahead of the normal fermentation time; meanwhile, the gas generation rate can be improved.

Description

[0001] technical field [0002] The invention relates to an additive for biogas fermentation. Background technique [0003] At present, the start-up period of biogas fermentation is generally longer, especially under low temperature conditions and when the fermentation feed liquid does not reach the ideal pH value, the required fermentation start-up time is longer. The gas rate is not high either. Contents of the invention [0004] The purpose of the invention is to promote the pH value of the feed liquid to become normal, start the rapid fermentation of biogas, and improve the gas production rate as an additive for biogas fermentation. [0005] The technical solution adopted by the present invention is: an additive for biogas fermentation, which is characterized in that it is mixed according to the following components by weight: polysaccharides account for 10-50%, protein substances account for 15-75%, fatty acid combination Compounds or nitrogenous substances accounte...

Claims

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Application Information

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IPC IPC(8): C12P5/02C02F11/04
CPCY02E50/343Y02E50/30
Inventor 罗永成袁新华徐书华傅樨明姚光伟马有理余善熊
Owner 开化县农村能源办公室
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