Drinking water supply in the area of Sodražica – Ribnica – Kočevje

Implementation of ultrafiltration technology for the project Drinking water supply in the Sodražica Ribnica Kocevje area

The project “Drinking water supply in the area of Sodražica – Ribnica – Kočevje” is a partner project of the municipalities Sodražica and Ribnica. The main aims of the project are to ensure access to quality drinking water for 25,180 people from the municipalities Kočevje, Ribnica and Sodražica and to include 1,378 new people into the public water supply system. The entire project is worth over 25 million Euro, from which 18.3 million Euro were dedicated to improving the water supply network and 5.5 million Euro for the construction of filtration devices. The investment is co-financed by the Republic of Slovenia and the European Union’s Cohesion Fund.

Drinking water supply in the area of Sodražica – Ribnica – Kočevje

The project, in which Kolektor Sisteh participates as a contract partner and implementer of water treatment technology in consortium with the company Hidroinženiring, is ready for the release of filtered water into the water supply system. 

It is one of the largest infrastructural projects in drinking water supply in Slovenia. The works were executed in the area of all three municipalities on water supply systems as well as in the construction of drinking water treatment facilities. Construction began in early 2016, with the anticipated conclusion, including a trial run of the newly constructed system, in October 2019. 

In the framework of this project, 65,570 metres of new pipelines, 11 pumping stations, 4 water reservoirs and 3 filtration devices for the treatment of drinking water were constructed. In order to improve the monitoring and increase the efficiency of quality drinking water supply, the existing water supply network was linked into a cohesive water supply system, while simultaneously improving its hydraulic characteristics and thus ensuring better water flow through the pipelines and reducing water losses.

Naprava za ultrafiltracijo vode Blate

In the framework of the project, Kolektor Sisteh implemented the technology of ultra-filtration, including the supply, assembly, start-up, user training and trial run. We will also provide technological support to the manager and maintenance of ultra-filtration devices during the period of regular use.

Three devices for ultra-filtration of drinking water were installed into the system: UF Slovenska vas and UF Blate, each with a capacity of 80 l/s, and UF Globel with a capacity of 20 l/s. 

Naprava za ultrafiltracijo vode Globel

In addition to the technology, Kolektor Sisteh also implemented a software solution for the managing and visualisation of water treatment plants as part of the project. Together with the existing central monitoring system, the latter enables the contracting authority to efficiently manage water treatment plants and accompanying facilities.


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