Farm-scale Biogas Plants

In Germany there are about fifteen years of experience in the planning and construction of farm-scale biogas plants. In the meantime, approximately 1,600 biogas plants are in operation on farms. This is primarily due to investment funding and payment for each kWh delivered to the public energy grid. In general, three different kinds of digester types are in use for anaerobically treating manure and other organic input substrates: small horizontal digesters, medium-sized upright concrete ones and large upright steel digesters. Depending on several factors, which have to be known before engineering of the biogas plant is begun, an experienced engineer chooses the most suitable process technology. This allows for a great variety of technical solutions, and their successful implementation frequently depends on the experience of the engineering and construction companies.