World of PORR 170/2017 PORR Updates Berlin Waßmannsdorf – keeping things clean Project to construct the second-largest sewage treatment plant in Berlin The machine house will be built on a pit with a watertight sheet pile wall on a re-anchored underwater concrete floor. The tee-off building will be connected directly to the existing sand trap, and is designed to regulate the inflow of waste water in rainy weather. Further works planned in Berlin With this order, the PORR Deutschland GmbH . Berlin branch Waßmannsdorf sewage treatment plant has won a new client and established a basis for further Image: Berliner Wasserbetriebe participation in the construction works of Berlin water companies. In addition to the recently won order for On the 15 March 2017, the Berlin branch of PORR Oberhausen pumping station of the Emschergenossenschaft, Deutschland was commissioned with part of the two-stage this is another step in building the market segment of sewage extension of the Berlin-Waßmannsdorf sewage treatment plant construction in Germany. plant. The company has been involved in this large-scale project from the outset. Project data Waßmannsdorf sewage treatment plant is the second largest Client Berliner Wasserbetriebe serving Berlin and the Brandenburg region. 180,000 m³ of Contractor PORR Deutschland GmbH . Berlin branch wastewater are cleaned here every day. Berliner Wasserbetriebe are now starting to modernise and expand Project type Structural engineering the sewage treatment plant. Scope of Construction of a mixed-water tank, and a performance process water and a sludge treatment plants Two-stage extension of the sewage treatment plant Start of April 2017 The extension will take place in two stages. The first stage construction comprises the expansion of the capacity of the sewage End of July 2018 treatment plant. For this purpose, a mixed-water storage tank construction and two additional cleaning lines will be built. In addition, a Country Germany process water and a sludge treatment plant are also being installed. In the second stage, the sewage plant will be equipped with a fourth purification stage and a plant for the removal of phosphorus, a so-called flocculation filtration. Mixed-water storage with 50,000 m³ capacity The mixed water storage facility is a concrete basin with 50,000 m³ storage volume. Once the capacity of the sewage treatment plant has been reached in rainy weather, mixed water is collected here and then returned to the sewage treatment plant. Mixed-water draining into Teltow Canal will be significantly reduced in the future, resulting in improved water quality in the Spree and the Havel. The basin has dimensions of approximately 80 x 65 m and a depth of up to 15 m. The reinforced concrete construction will contain numerous separating and guiding walls. All interior walls will be clad with polyethylene (PE) panels for corrosion protection. The entire basin will be closed off with a glass-fibre reinforced plastic (GRP) cover. A range of plant components with a single goal: Clean water The building contract also includes a tee-off building, a machine-building in reinforced concrete, and a steel-structure exhaust air treatment hall. Page 1.