AAT BIOGAS Technology

Reliable Technology for commercial success

AAT offers plant design, process technology and equipment for processing of organic waste and purification of highly contaminated waste water with simultaneous energy production. 

News

Merry Christmas and Happy New Year

December 23, 2025
The most difficult way for a man to go is the way between intention and execution. Wilhelm Raabe. Soon the year is coming to an end and we want to take this opportunity to thank you for your confidence in us and for the convenient co-operation. The team of AAT wishes you and your families some peaceful and joyous holidays and a good start into the new year 2026! This year we support the charity „Netz für Kinder (net for children)“.

The Tahula biogas plant construction is on the finish line

November 25, 2025
The biogas plant in Estonia designed by AAT is on its final construction stage and will start producing energy in the summer of 2026. Location: Tahula village, Saaremaa municipality, Estonia. The biogas plant is the biggest biogas plant in the Baltics so far, it has two lines with 1 Mix tank, 3 Digesters and 1 Post Digester on each line. The plant is designed to process almost 800 tons per day of locally collected liquid and solid agricultural waste, namely cow and pig manure, feed rests, grass, flotation sludge, whey, etc. The produced biogas will be upgraded to biomethane. Technical data of the plant: - 6 digesters with 3,880 m³ volume each (Ø 26m x 8 m) - Biogas production: 1460 Nm³/h (or 880 Nm³/h biomethane equivalent) - Fertilizer production: 756 t/d
Our perfomance profile

AAT builds biogas plants for food waste, whey, sugar beet, organic waste, stillage, sewage sludge, spent grain, molasses, press cake and many other substrates. AAT has designed and implemented biogas plants for over 150 substrates.


We deliver everything from one source. From design, supply of plant components, assembly, start up, biological support to after sales service. Our speciality is the unique hydraulic mixing digester.


Our core business is the treatment of industrial and municipal sludge, biowaste, agriculture feedstock and energy crops.

References

About 1,000 clients use AAT components and Know-how. Well over 130 large-scale plants in 30 countries have been built under our management since 1993. Here you will find a part from the waste treatment plants, sewage treatment plants and agricultural biogas plants that we have implemented.


We will be happy to provide other references and detailed information on the projects we have carried out upon request.


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