Design and build contract for the design, delivery, erection and commissioning of a biowaste treatment plant with a biogas capacity of 850 Nm³/h (5.5 MW) for the city of Berlin and the vehicle fleet of BSR.
Location:
Berlin /Germany
Build time:
2013
Client:
BSR Berliner Stadtreinigungsbetriebe
Biowaste treatment plant Berlin
Design & build contract for design, delivery, erection and commissioning of a biowaste treatment plant in Berlin, using source segregate collected biowaste
The biowaste treatment plant in Berlin is a flagship project that effectively closes the circuit of the circular economy. Designed to process source-segregated organic waste, the facility generates sustainable energy while returning valuable nutrients to the environment. The plant produces approximately 850 Nm³/h of biogas (5.5 MW), which is upgraded to natural gas quality. This refined gas is then used to fuel the waste collection vehicle fleet of the client, BSR, directly powering the logistics that collect the city's waste.
Scope of work
The comprehensive scope of this design & build contract covers every stage from waste reception to the final distribution of refined products. Key infrastructure components include:
- Pre-treatment: advanced waste reception and equalization systems to prepare the organic material for feeding into the digesters.
- Digestion technology: installation of two STRABAG LARAN® dry digesters TF 2200, utilizing a thermophilic dry digestion process.
- Residue management: two-stage dewatering of the digestate, followed by the composting of solid fermentation residues in six specialized aerated boxes.
- Final products: production of high-quality compost for reuse and liquid residues utilized as agricultural fertilizer.
Technical services
A defining technical feature of the Berlin plant is the use of STRABAG’s patented LARAN® plug flow digesters. This technology is optimized for high-efficiency biogas generation from dry organic matter.
Furthermore, the facility features a sophisticated biogas processing system that upgrades the gas to natural gas quality using the BCM process (pressureless amine washing). This allows for seamless feeding into the Berlin gas grid. To ensure environmental compliance and local air quality, the plant is equipped with an advanced exhaust air treatment system, incorporating both a chemical scrubber and a biofilter. This combination of sustainable fuel production and rigorous emission control makes the Berlin biowaste plant a benchmark for urban green energy solutions.
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