Antifreeze management of biogas digesters
The first is to build a shed above the pool to increase the temperature of the solar energy. This can not only grow vegetables in the shed, but also increase the gas production rate of the digester. The second is to increase the temperature in the pool, can be put into the pool of some hot fermentation raw materials, such as bean curd, wine, flour, slaughterhouse waste, waste water and cow's urine. These raw materials are directly added to the biogas tank, which can increase the pool temperature and increase the gas production. Third, outside the pool insulation, the first three biogas digester cover is covered, on top of a layer of waste film, the film above the stack of grasshoppers to achieve insulation effect. The fourth is to increase the temperature and heat of the heap. In the winter, the body of the digester should include inlets and outlets that directly contact with the outside world, and the hot crop stalks, weeds (grasses, straw, etc.) should be stacked or piled. Hot excrement (cattle, horses, donkeys, sheep excrement, etc.), stacking manure and weeds are to be humidified and covered with a thin film, which is not only beneficial to the heat preservation and temperature increase of the biogas tank, but also strengthens the stacking, which is followed by the biogas digester. Fermented raw materials provide protection. The fifth is the maintenance of outdoor pipelines. The ground pipelines must be buried under the frozen layer, and the pipelines on the ground must be wrapped with rags, plastic films, etc. to prevent freezing cracks.
The lock channel is one of the most important thing for greenhouse, it can lock the film ,shading net ,insect net .
It is hot galvanized or aluminum material.
We have different thickness.
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