Waste treatment plants such as large-scale industrial and municipal digestion plants are used for biowaste and kitchen waste digestion. Before digestion, biowaste and kitchen waste have to be treated. This pretreatment includes foreign objects removal, grinding, sieving and homogenisation. Biomethanisation Plants are used for collection of manure in a reservoir for the production of heat and electricity. The average hydraulic retention time of the manure inside the digester is 10-20 days. Two outputs are biogas and digested substrate.
Cofermentation biogas plants not only digest manure but also take other organic substances - so-called coferments - as well. Typical coferments are fats, market wastes, spice residues, residues from food industry and many similar substances. |