The Anaerobic Digestion (AD) process takes animal manure, food waste and silage and produces biogas (a methane rich fuel). The biogas is fed to a combined heat and power plant, the outputs from which are electricity for the National Grid, heating and bio-fertilizer which is returned to the land. The process helps to reduce greenhouse gases, contributing towards renewable energy targets and reducing landfill.
The total number of anaerobic digesters in the UK is growing rapidly and the National Farmers Union themselves have a target of 1000 farm based plants. A single AD plant is capable of supplying sufficient power for a small town and our Government sees the UK becoming a world leader in food waste digestion technology.
Corrosion resistant stainless steels are used in many forms in a typical AD plant, such as in tank linings, pipework, access systems, valves, pumps and propellers. Ease of installation and low maintenance costs are also decisive advantages in helping to minimise the plant's lifetime operating costs.