Waste treatment Wernsing Anaerobic Digestion Plant (Germany)


Courtesy of bwe Energiesysteme GmbH & Co. KG

Wernsing biogas plant Addrup

The Wernsing biogas plant was one of the first biogas weser-ems plants to treat waste from food industry since its commission in 2001. Up to 200 tonnes of white cabbage and potatoes waste are used as main input material per day. In addition to the biogas plant, the facilities owned by the Wernsing group include a waste water treatment plant to treat the sewage generated during the food production.

The plant consists of four digesters and reception tank with an installed capacity around 3.5 MW, taking into account the small percentage of biogas produced in the waste water treatment plant. The low-temperature waste heat is used for heating the input substrate in the biogas plant and the drainage of the centrifuges within the waste water treatment plant. With up to 500°C, the high-temperature waste heat is used to dry the digestate amongst other things. Ultimately, the digestate is used as nutrient-rich fertiliser, contributing along with the ultra-low carbon energy to the Wernsing group´s sustainability.

Technical data

Year of Construction: 2001

Power: 3,5 MWel

Input materials: Residues from food industry

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