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12. November 2013

Efficient sludge dewatering in an underground sewage plant

Municipal wastewater treatment currently faces a range of challenges characterised by factors like global and regional changes in climate and demography, more stringent legislation, and an ever-increasing demand for greater resource efficiency, capacity utilisation and cost coverage.

The ARA Tobl Sewage Plant in St. Lorenzen, South Tyrol, Italy, exemplifies an effective response to modern demands on wastewater treatment facilities for flexible, sustainable and at the same time economically viable solutions. Because of its scenic location in the middle of the Alps, the ARA Tobl sewage plant has been housed in underground caverns. The plant is connected to a sludge dewatering and thermal utilisation facility based on a forward-looking, energy-efficient sewage sludge disposal concept. With an average of 25,000 tons of sludge to deal with each year, maximum plant reliability and maximum dry substance content of the output are absolutely crucial for the cost-effective operation of the works. For this reason, ARA Tobl has chosen the low-temperature belt dryer BDSLC I-RT-C-2.1 from the company Andritz 3SYS equipped with a PPS 5099 process belt manufactured by GKD – Gebr. Kufferath AG.

The full press release is available as PDF download:

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