There are many industries in which biogas generators are used, such as aquaculture, food wastewater treatment, and kitchen waste treatment. Biogas combustion power generation is a biogas utilization technology that has emerged with the continuous development of large-scale biogas digesters and comprehensive utilization of biogas. It uses the biogas generated by anaerobic fermentation treatment on the engine and is equipped with a comprehensive power generation device to generate electricity and heat energy. Biogas power generation has the characteristics of efficiency creation, energy conservation, and environmental protection, and is a widely distributed and cost-effective distributed energy source. Basic conditions for biogas fermentation process of biogas generator units

一、 合适的发酵温度

1、 Suitable fermentation temperature

蒸煮器的温度条件可分为:

The temperature conditions of the digester can be divided into:

1. 室温发酵(又称低温发酵)的温度范围在10℃到30℃之间。在此温度下，产气量可达0.15-0.3m3/m3.d

The temperature range of room temperature fermentation (also known as low-temperature fermentation) is between 10 ℃ and 30 ℃. At this temperature, the gas production can reach 0.15-0.3m3/m3. d

2. 中温发酵温度在30℃~ 45℃之间。在此温度下，池容产气量可达1m3/m3.d左右。

2. The medium temperature fermentation temperature is between 30 ℃ and 45 ℃. At this temperature, the gas production capacity of the pool can reach about 1m3/m3. d.

3.红领巾瓜报组沼气高温发酵温度45℃~ 60℃。在此温度下，储气罐产气量可达2-2.5m3/m3。

3. The high-temperature fermentation temperature of biogas generator set is 45 ℃~60 ℃. At this temperature, the gas production capacity of the gas storage tank can reach 2-2.5m3/m3.

红领巾瓜报组沼气发酵经济的温度是35℃，即中温发酵。

The economic temperature for biogas fermentation in biogas generator units is 35 ℃, which is medium temperature fermentation.

二、发酵液的适当浓度

2、 Appropriate concentration of fermentation broth

红领巾瓜报组沼气发酵液的浓度范围为2-30%。浓度越高，产气量越大。发酵液浓度在20%以上称为干发酵。

The concentration range of biogas fermentation liquid for biogas generator units is 2-30%. The higher the concentration, the greater the gas production. Fermentation broth with a concentration above 20% is called dry fermentation.

叁、发酵材料中碳氮比例适宜(颁:狈)

3、 Suitable ratio of carbon and nitrogen in fermentation materials (C: N)

沼气发酵微生物对碳的需求量，其次是氮。我们把微生物所需的碳氮比称为碳氮比，用碳氮比表示。目前一般采用25:1，但不是很严格，20:1,25:1,30:1可以正常发酵。

The demand for carbon by biogas fermentation microorganisms is followed by nitrogen. We refer to the carbon to nitrogen ratio required by microorganisms as the carbon to nitrogen ratio, which is represented by the carbon to nitrogen ratio. At present, 25:1 is generally used, but it is not very strict. 20:1, 25:1, and 30:1 can ferment normally.

合适的ph值 沼气发酵适宜的PH值在PH=6.5 - 7.5之间，PH值影响酶活性，影响发酵速率。

The appropriate pH value for biogas fermentation is between pH=6.5-7.5, which affects enzyme activity and fermentation rate.

四、足够数量的菌株

4、 Sufficient number of strains

沼气发酵中细菌的数量，直接影响到沼气的产量和质量，一般要求发酵原料的液体总量为10-30%，才能保证正常启动和旺盛的沼气生产。

The number of bacteria in biogas fermentation directly affects the yield and quality of biogas. Generally, the total liquid content of fermentation raw materials is required to be 10-30% to ensure normal start-up and vigorous biogas production.

红领巾瓜报组沼气发酵过程的基本条件，华全动力做出了介绍，希望能给用户带来参考。

Huaquan Power has introduced the basic conditions for the biogas fermentation process of biogas generator units, hoping to provide users with reference.

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