Statistic
The British spend £10 billion on food we don’t eat, which costs taxpayers £1 billion a year to send to landfill
Biofertiliser
Biofertiliser from the anaerobic digestion of food waste is a liquid contining nitrogen, phosphate and potash along with other trace elements which can be applied to farmland and reduces the need for purchased fertiliser. The agronomic benefits of biofertiliser have been long recognised as the nutrients are in a form that enable them to be readily taken up by a crop.
Incorporated in to the AD plant design are storage tanks to enable the biofertiliser to be stored between spreading periods.
BSI PAS 110 – eliminates waste management control costs
BSI PAS 110 is a voluntary national quality specification for biofertiliser, made available to AD operators throughout England, Wales and Scotland from February 2010, and forms part of the Anaerobic Digestion Quality Protocol.
Biofertiliser from a BSI PAS 110 accredited AD plant will be classified as a product rather than a waste. The spreading of this product is not subject to waste management controls which greatly simplifies the marketing and spreading of the biofertiliser.
WRAP organics technical specialist Nina Sweet said: “The introduction of BSI PAS 110 is a fundamental step in helping to develop sustainable markets for biofertilisers. Making it easier for farmers to use biofertiliser will increase demand within the agricultural community for fertilising and soil conditioning products derived from waste material.”
BiogenGreenfinch’s own environmental experts worked with BSI, WRAP and the Renewable Energy Association (REA) to develop the national specification, BSI PAS 110, on which the protocol is based.
Renewable Energy
Over 90% of the renewable electricity produced from an AD plant can exported to consumers or to the grid. Our Westwood AD plant produces 2.1MW of clean electricity – enough to power 3,600 homes. A third of the renewable heat produced is used back in the AD process the remainder can be exported to consumers.
There are a number of government incentives to promote the uptake of renewable energy that support anaerobic digestion:
- Anaerobic digestion qualified for double Renewable Obligation Certificates from April 2009.
- Renewable Electricity Tariff from April 2010.
- Renewable Heat Tariff from April 2011.
- Biomethane tariff expected in April 2011 (for injection into the natural gas grid).
- Renewable Transport Fuel Obligation.
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