Design of biogas plantA good biogas digester must resemble the stomach with an inlet, an outlet and the ability to stir the materials as it grids them. A fixed dome biogas unit constructed by a qualified technician can last for as long as 50 years. It is therefore recommended that one install a fixed dome biogas unit. However, it is important to be cautious by ensuring that open flames are not permitted within six metres of a biogas plant. Extra storage facilities are not required in the fixed dome biogas system because it has its own storage device known as the displacement mechanism.

Source: Daily Nation January 19, 2018 18:11 UTC