Improving wastewater treatment facilities in northern Slovakia

The collection and treatment of wastewater in parts of northern Slovakia looks set to be markedly improved thanks to a project which aims to connect more people to the sewerage system while upgrading two treatment plants (WWTPs).

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The project will ensure that the WWTPs at Dolný Kubín and Nižná are able to run at their required capacities in order to eliminate nutrients and to achieve targets for the treatment of contaminated wastewater that are laid down in government and EU legislation.

The programme of works also provides for the construction of a 136 km-long sewerage system and 15 pumping stations. This will ensure that more than 85 % of the local population are connected to the public sewerage system. The scheme will also connect about 18 000 people in seven municipal areas to the Námestovo WWTP, which was built under the “Orava region stage 1” project. (Stage 1 was undertaken during the EU’s 2000-2006 structural fund programming period.) As well as improving people’s quality of life, the project will reduce pollution of surface and ground water.

New infrastructure

The work encompasses three specific activities:

  • Dealing with sewerage in Námestovo: The project covers the construction of the sewerage system along with the treatment of wastewater from the agglomerations of Oravská Jasenica, Hruštín, Zákamenné, Novoť and Rabča. Treatment will take place at Námestovo’s WWTP. The newly designed sewerage system will service several municipalities located in the Polhoranka basin and will be connected to the existing Námestovo – Rabča sewer network. Similar sewerage construction works will be carried out in municipalities that are situated in the Biela Orava basin.
  • Dolný Kubín – WWTP: New technology will be installed to allow the plant to eliminate nutrients more effectively. Doubling the volume of the aeration tank will improve the plant’s ability to dispose of nitrogen pollution. For sludge management, biogas will be collected by a separate pipe and connected to a new dry gasholder. A new residual gas burner will be installed to remove excess biogas. New equipment for the machinery room will include a spiral water-sludge exchanger, pumps for sludge recirculation, a pump for “big circulation” in the digestion tank, and associated pipes and fittings.
  • Nižná – WWTP: New technology is to be introduced to the plant to improve the way it eliminates nutrients. Sludge will be thickened mechanically and transported to the aerobic sludge stabilisation unit, which will be created from the existing anaerobic digesting tank. A tank will be reconstructed and new mechanical equipment installed. Stabilised sludge will be dewatered on a belt press.

About 900 jobs are expected to be created during the project’s implementation phase. Oravská Water Company j.s.c. will own and operate the new sewerage infrastructure.


Total investment and EU funding

Total investment for the project “Water Supply and Sewerage of Orava Region, Stage 2” is EUR 87 800 089, with the EU’s Cohesion Fund contributing EUR 52 238 710 for the 2007 to 2013 programming period. The project is funded through the priority "Integrated protection and rational utilisation of water" of the Operational Programme “Environment”. 


Draft date

22/05/2013