At present, new biogas digesters are built every day in rural areas. Once the loading is started, how can the biogas digesters be quickly started to produce gas after they are charged? The practice is as follows:
1, raw materials.
(1) Prepare sufficient raw materials for fermentation. An eight cubic meter biogas digester, with a loading rate of 85% and a feed solution concentration of 40-60%, requires 2.9-4.4 cubic meters of fresh pig manure or 2.27-3.4 cubic meters of fresh cow manure.
(2) Fresh feces cannot be used.
2, raw material stacking. The ground is covered with plastic film and the fertilizer and inoculum are layered and sprinkled with water. The amount of water added is to wet the livestock excrement, and the bottom is not suitable for flowing water. Generally, the stacking time is 2-3 days.
3. Add enough inoculum. Due to different sources of raw materials and different types of fermentation raw materials, the amount of methanogens in fermentation raw materials varies greatly. Therefore, adding enough inoculum is one of the important conditions for ensuring biogas production soon. The new pool should be filled with 10-20% of inoculum.
4, add water. Take an 8 cubic meter biogas digester as an example. Fresh pig manure needs 2.4 to 3.9 cubic meters of water, and fresh cattle manure needs 3.4 to 4.5 cubic meters of water. The water added to the digester is preferably warm water that has passed through the sun.
1, raw materials.
(1) Prepare sufficient raw materials for fermentation. An eight cubic meter biogas digester, with a loading rate of 85% and a feed solution concentration of 40-60%, requires 2.9-4.4 cubic meters of fresh pig manure or 2.27-3.4 cubic meters of fresh cow manure.
(2) Fresh feces cannot be used.
2, raw material stacking. The ground is covered with plastic film and the fertilizer and inoculum are layered and sprinkled with water. The amount of water added is to wet the livestock excrement, and the bottom is not suitable for flowing water. Generally, the stacking time is 2-3 days.
3. Add enough inoculum. Due to different sources of raw materials and different types of fermentation raw materials, the amount of methanogens in fermentation raw materials varies greatly. Therefore, adding enough inoculum is one of the important conditions for ensuring biogas production soon. The new pool should be filled with 10-20% of inoculum.
4, add water. Take an 8 cubic meter biogas digester as an example. Fresh pig manure needs 2.4 to 3.9 cubic meters of water, and fresh cattle manure needs 3.4 to 4.5 cubic meters of water. The water added to the digester is preferably warm water that has passed through the sun.
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