The BrewDog Brewery - United Kingdom
Biogas upgrading at BrewDog's HQ Bio-plant
The BrewDog Brewery makes biogas from leftover grain and that helps fight climate change by producing renewable energy. Through DMT’s three-stage membrane separation technology, biogas from two anaerobic digesters is processed and upgraded to a purified Biomethane stream which is then injected into SGN’s pipeline to provide thermal energy for homes and businesses in the local town of Ellon.
£12M bio-energy plant: 7,500 tonnes less CO2 annually
The new £12 million bio-energy plant at the firm’s Ellon headquarters in Aberdeenshire will result in 7,500 fewer tons of carbon emissions every year when running at full capacity.
The anaerobic digester will help the business recycle most of the 200 million litres of wastewater produced every year in the beer-making process, as well as generating bio-methane to power the brewery’s boilers.
Over the coming years, BrewDog also plans to use the CO2 created by the digester to carbonate their beer.
About the project
At many breweries, the rinse water used in the brewing process is purified and reused. The wastewater treatment plant at the BrewDog HQ bio-plant will reduce the water usage of the brewery by 50%. A waste stream containing sludge is released during this purification process. This sludge is transferred to a digester where the digestion process takes place during which biogas is produced.
The biogas at the BrewDog brewery has a typical biogas composition, 55% methane, 44% carbon dioxide and some gasses with impurities such as H2S. Biogas upgrading means separating the gas into main streams; one stream will be almost 100% pure carbon dioxide and the other stream (bio) methane > 90%. The CO2 will be reused in the brewing process thereby lowering CO2 emissions and closing the circle by using the CO2 as a product that otherwise would have gone to waste.
Targeting zero net emissions
DMT will supply the biogas upgrading technology with a capacity to clean 600Nm3 per hour. The biogas upgrading plant is a key part of BrewDog’s zero emissions goals and is expected to inject the first gas to SGN’s gas grid in February 2022. Since DMT’s first UK project in 2012 DMT has installed and maintained many projects in the United Kingdom.
DMT’s team in the UK will take care of the daily management of the scope, working closely together with SGN and our partner Heat & Power Services to ensure timely delivery of a successful project.
Creating a sustainable future
The project with BrewDog is a great example and shows how innovative technologies can be used to reduce carbon emissions and contribute to a cleaner environment, creating a sustainable future. DMT’s has a wealth of experience helping companies achieve their sustainability goals. Our mission is to reduce the environmental burden is very similar to BrewDogs.
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