Stadler designs and installs MRF and Compost Refinement plants in Greece

Greek renewable energy company Terna Energy is a player in clean energy production and storage, and the largest investor in Renewable Energy Sources in Greece.

It further consolidates its role in sustainable development and circular economy through its integrated waste management projects. For this area of its activity, the company has chosen Stadler, the globally active German company specialized in the planning, production and assembly of turnkey recycling and sorting plants, as strategic partner in Public Private projects for the design and installation of Materials Recovery Facilities (MRF) in the Epirus region and now also in the Peloponnese. Stadler has now completed the commissioning and start-up of the latest facility, an MRF and Compost Refinement Plant in Tripoli, the capital city of the Peloponnese region, and two further projects in Sparta and Kalamata are in progress.

The new facility stands out for its high degree of automation and efficiency, and for its capacity to adapt to changing material composition. It produces consistently high-quality output, achieving outstanding recovery rates – above 90% for the organic fraction, plastic containers, bottles and paper, and 80% for biofilms and PE film. It is also designed to facilitate maintenance, with easy access to all components and motors for service.

The sorting plant receives mixed Municipal Solid Waste (MSW) with an input capacity of 30 to 40tph in a single line. It is processed to produce a high-quality output of recyclates and organic material. The former – PET, HDPE, PP/PS, Foils, Paper, Cardboards, Ferrous and non-Ferrous cans and containers – are sorted into automatic bunkers and then baled. The latter, in two fractions – one passing from Anaerobic Digestion and the other from vessel composting – are further processed in the compost refinement plant with a capacity of 10tph, producing two fractions of clean compost with different specifications and material size.

Stadler’s design team developed a plant that delivers the high-quality output required by Terna Energy, effectively addressing the challenge presented by the peculiarities of the waste stream in the region: “The Peloponnese is a very touristic region, and this has an effect on the composition of the waste, with high variations in seasonal consumption and diversity of packaging,” explains Dimitris Blanas, Head of Sales Greece & Middle East at Stadler.

The process begins with two trommel screens then a Stadler STT5000 Ballistic Separator that separates the rolling, flat and screened fractions. At this stage of the process, Pellenc ST COMPACT optical sorters, seamlessly integrated with Stadler’s high-speed conveyors, come into play to sort waste by material and color on the two main lines: 2D for flat objects such as mixed paper, cardboard and film, and 3D for hollow objects such as bottles, containers, and trays. These sorters, which feature Pellenc ST’s latest advanced technology, are perfect for the task with their compact size, low-energy consumption and high level of performance, as well as their capability to manage the volumes and variations in the feed.

As part of its partnership with Terna Energy, Stadler has designed two further MRF and Compost Refinement plants with similar characteristics and capacity in the area of Lakonia and Messenia, also in the Peloponnese region. Stadler will support the three plants with a local service team and a dedicated maintenance storage center. These three plants, together with the facility designed and built by Stadler in Epirus, will be the most advanced MRF sorting plants in operation in the country.

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