BV to pioneer liquid AD technology
BV Dairy is aiming to cut its carbon footprint by more than 65 per cent by pioneering the use of liquid anaerobic-digestion (AD) technology.
The move is expected to allow the dairy to reduce its CO2 emissions by approximately 1,200 tonnes per year and save an estimated £150,000 per year by generating more than 75 per cent of the site’s electricity consumption once the system becomes fully operational in August 2010.
A liquid digester designed and built by Clearfleau will produce biogas from the treatment of liquid waste that will then be used to feed a combined heat and power (CHP) technology designed, supplied and operated by Ener-G to convert the biogas produced into energy.
The 190kWe CHP system will be capable of generating 1,539MWh of electricity and 1,685MWh of heat per annum from effluent, dramatically reducing the dairy’s reliance on fossil fuels.
The majority of electricity will power existing dairy operations, with the remainder sold into the National Grid. Surplus heat will be used in the production process. In addition, small amounts of de-watered digestate will be produced, which will be used as a soil conditioner and fertiliser.
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