BIOGEN are responsible for the construction of a 22,500 tonne per year anaerobic digestion plant at the former abattoir site located at Waen, Rhuallt just off the A55 trunk road.
The plant will process food waste by means of anaerobic digestion which will generate 1MW of renewable electricity for the national grid and a biofertiliser for use on local farmland. It will divert the food waste which currently goes to landfill, helping Denbighshire County Council, Conwy County Borough Council and Flintshire County Council meet their recycling targets and avoid substantial fines for failing to meet those targets. It is proposed the anaerobic digester will be built, owned, and operated by Biogen, the UK’s leading anaerobic digestion specialists.
Anaerobic digestion is a biological process that happens naturally when bacteria break down organic material in a sealed environment without oxygen. The process produces a methane-rich biogas which is captured and used as a renewable fuel to generate electricity and heat. The electricity produced from this renewable fuel is supplied to the national electricity grid
A liquid ‘biofertiliser’ high in crop nutrients is produced as part of the process. This would be stored in covered tanks at the site, to be applied at specific times of the year onto local farmland.
In partnership with our sister company, Bedfordia Farms, Biogen currently operates two commercial anaerobic digestion plants:
• Twinwoods, near Milton Ernest in Bedfordshire, processing 47,000 tonnes of food waste and pig slurry per year.
• Westwood, to the south-east of Rushden in Northamptonshire, processing 49,000 tonnes of food waste each year.
The anaerobic digestion process is commonly used in the UK to recycle wastes such as sewage sludge, animal slurries, and organic waste. The technology is well-established and widely used across the UK, mainland Europe and other parts of the world. For example, in Germany there are several thousand anaerobic digestion plants generating renewable energy from a range of materials including crops grown specifically for treatment, through to food and other organic wastes.
Biogen is the UK’s leading anaerobic digestion specialist. We design, build, own and operate anaerobic digesters which recycle food and other organic wastes to produce renewable electricity and biofertiliser. Our food waste treatment services are used by a wide range of customers including many local authorities across England and Wales. We also work closely with farmers, including our sister company Bedfordia Farms, to make sure that best use is made of the biofertiliser to grow crops.
Our skills in the use of anaerobic digestion technology and operating commercial anaerobic digestion plants comes from more than 30 years of working in this field.
We have proven operational experience of the practical design and application of anaerobic digesters to recycle food and other organic wastes. This knowledge is built up on the back of extensive research and development in collaboration with academic institutions and government bodies.