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.

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We let the facts speak.

Processing Capacity BTA Plants


Biogas Production BTA Plants

mio m³/a

Electrical Power up to

MW el.

Number of References


We unite economical and ecological interests.

Humanising Energy

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

Watch movie

Under Construction

Biowaste from Pisa, Italy, will soon be processed in a new facility in Gello di Pontedera.

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Biovoice Innovation Challenge

We are proud to have been awarded an innovation contract and voucher as part of the BioVoice programme 2021. 🏆🥂 Watch the challenge and stay tuned for our solution!

Watch the Challenge

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

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