About biogas plants. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Alternative energy sources
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Biowaste from the surrounding farms is delivered by trucks or pumped to the biogas plant. Or, if the installation is small, then the raw material is collected in a cesspool (collector) near the reactor. From the collector, the reactor is continuously filled with a pump.
Waste crops, such as straw or other coenzymes, are brought in by trucks, unloaded into closed pits (latrines), which are usually closed to reduce odor emissions and only opened to add coenzymes. To reduce odors more effectively, deliveries are sometimes made indoors. First, the coenzymes are poured out (ground), homogenized and mixed with manure (litter). Homogenization is most often carried out at a temperature of 70°C for one hour with a maximum particle size of 1 cm. Homogenization with manure is carried out in a mixing tank with powerful agitators.
The reactor is a gas-tight, fully sealed reinforced concrete tank. This design is thermally insulated, because the temperature inside the tank must be fixed for microorganisms. It can be either mesophilic (about 35°C) or thermophilic (about 55°C). Inside the reactor is a mixer designed to completely mix the contents of the reactor. Sometimes mixing is done with a mixer placed in the center of the lid, and sometimes with submerged mixers.
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