Engineering performance that pays off.

We are the leading specialists for the pretreatment and wet digestion of waste containing contaminants.

Our wet mechanical pretreatment impresses with highest substrate flexibility and efficiency in the separation of impurities. This ensures high operational reliability, minimises disposal costs, maximises profitability and secures best digestate quality.

Whether it is a mechanical-biological waste treatment plant (MBT) for processing residual or municipal waste, wet digestion plants for biowaste, food waste or commercial waste, plants for co-digestion with agricultural substrates or sewage sludge, upstream plants before composting, or upgrades or refurbishments of existing wet-mechanical treatment and/or fermentation plants, we offer engineering services based on 35 years of experience, proven and patented wet-mechanical pretreatment systems and turnkey digestion plants.

More Information

We let the facts speak.

Processing Capacity BTA & Agraferm Plants


Biogas Production BTA Plants

mio m³/a

Electrical Power up to

MW el.

Number of References BTA & Agraferm Plants


We unite economical and ecological interests.

Humanising Energy

BBC filmed Gasum's BTA plant in Lohja for their humanising energy series.

Watch movie

Plants under Construction

Essonne & Gennevilliers (France), Valorlis (Portugal) & Gello (Italy)

Read more

18. - 20.04.2023 Waste and Resources Forum in Kassel, Germany

Visit us at our booth 63 at the 34. Waste and Resources Forum in Kassel!

To the Programm

We care for sustainable customer relationships.

„We chose bta international for quality and superior technology of their plants, and have enjoyed a good working relationship with them. The AD plant has performed well and was integral in how we pioneered the biomethane injection work in the UK.“


Nick Finding, Director JV Energen LLP

What else can we share with you?