Wärtsilä to supply biogas upgrading solution to Transwaste

In Sweden, Wärtsilä will supply a biogas upgrading solution to Transwaste, a British waste management and environmental services company. The plant, near Hull in the north of England, will produce biogas from municipal waste and will inject up to 6 million m3 of biomethane into the national gas grid each year. The order with Wärtsilä was entered into the order book in March 2023 and the delivery of the plant is scheduled for December 2023.

This will be a dry anaerobic digestion plant capable of handling organic matter with a consistency of approximately 20 to 40 percent dry matter. Conventional wet digestion plants can handle a maximum of 20 percent dry matter.

Key features of Wärtsilä’s Puregas amine-based, upgrading technology are its significant operational cost advantages and its ability to handle biogas with high concentrations of Volatile Organic Compounds (VOCs) without the need for costly pre-treatment. Since the raw biogas for this project is expected to contain higher than normal VOC levels, the Wärtsilä solution will include a flash tank to flash out the VOCs and ensure long amine life.