Use biogas digesters in winter should pay attention

Firstly, take out half of the digester; secondly, cover it with straw and double membranes by covering 10 to 20 cm thick straw (straw or wheat straw), cover the black layer with a layer of black film, and then leave 5 Climbing on the rope in a high centimeter, the rope is covered with a transparent film. The thin film is compacted with fine soil or sand, and the surrounding area should exceed the range of 1 meter or more. Third, new material (for example, no new material) is added. It is also possible to use the extracted material and change it again when there is a new material. Inoculate the tank after warming and inoculate it by digging a pit on the ground, covering a layer of black film, placing the raw material on the membrane, and adding Seed material (soil or manure with biogas species), plus appropriate amount of warm water, covered with a transparent film, the film around the soil compaction, drying for 5 to 10 days until the raw gas production (air out) At that time, it can be used in a biogas digester. Fourthly, the import and export can be closed again. Fifth, a conditional pump can be used to recycle the feed solution once a day for about 30 minutes each time, or manually extract the feed solution from the exit. Put back into the import, mainly for stirring, but it should be noted that there should be sun at noon. OK to avoid liquid cooling.

If the user has more dry manure or straw, thicker straw (or dry manure) can be placed on the straw, sprinkle with the right amount of water, not too much, let the straw or dried manure rot, heat, increase the ambient temperature on the pool.

During the winter season, attention should be paid to: 1. Do not put cold excrement directly into the pool. Before entering the pool, use the above-mentioned pre-fermentation to increase the temperature and enter the pool. Second, do not feed in or out in the morning or night or when the rain and snow temperatures are low, or stir the circulating fluid. Third, do not put dry manure directly into the pool.

The use of biogas digesters in winter: 1. Add enough raw materials at one time to reduce the amount and frequency of cold materials added in winter; 2. Perform heat preservation and temperature increase measures in advance. The methods are the same as those mentioned above. 3. Check the gas pipelines and joints frequently. Run off due to cold contraction.

It is possible to build biogas digesters directly in enclosed greenhouses or build a small greenhouse in existing biogas digesters, so that the annual gas production will be much higher in any area.

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