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Mechanical biological Treatment of Municipal Solid Waste using Screw Presses manufactured by Bellmer
French environmental policies have been designed to minimize the amount of organic material that is landfilled, in order to reduce the emissions of greenhouse gases. Parisian Groupe Tiru joined with technological partner Opytma S.A. to develop projects for mechanical biological treatment using “Maximum Yield Technology” (MYT). Their first MYT plant – to be operated by the SYMEVAD consortium – has been built in Henin-Beaumont in the North of France and was started up in June 2015.

Municipal solid waste (MSW) undergoes several sorting steps before it is pre-treated in an aerobic reactor. Subsequently three AKUPRESS AS 625 screw presses supplied by Bellmer Kufferath Machinery separate the wet waste into coarse solids and a liquid phase. In order to prepare them for the rough conditions of MSW treatment, several features such as special wear elements, an optimized maintenance concept and a tight hood system that prevents odor emissions have been incorporated in our design. Bellmer Kufferath have a strong track record using the same process in plants in Germany, Australia and the UK.

The organic fraction of the liquid phase is converted into biogas in an anaerobic reactor, which contributes to the energy balance of the process. The high dry matter content in the solid phase achieved by our AKUPRESS AS screw press provides the best conditions for biological drying of that fraction. The three screw press lines separate 74,000 metric tons of pre-treated solid waste per year.
The high dry solids content achieved by the AKUPRESS ensures optimum conditions for drying