Mains sewage treatment is being brought to three villages in Slovenia for the first time with the help of a packaged treatment plant manufactured in the UK.
Hampshire-based WPL has been selected to produce the custom-made plant for the villages of Zdenska Vas, Mala Vas and Cesta in an EU-funded project.
Three High Performance Aerated Filter (HiPAF) units operating as a single treatment system at Zdenska Vas will be connected to a new mains sewerage system, ending the reliance of the villagers on septic tanks.
Central European Sales Manager Frantisek Mikulinec of WPL said:
“In countries such as Slovenia and the Czech Republic there are thousands of small remote villages and many are not connected to a sewerage system. In small villages you can have very big fluctuation in flows throughout the day when people go to work. Also temperatures in winter can fall to as low as -15oC.”
“The advantage of the HiPAF is that it can accommodate fluctuations in flow and temperature variations because submerged aerated filter (SAF) systems like the HiPAF adapt to loading changes more quickly than activated sludge flocs. Intensive nitrification can occur even when the temperature is low due to biofilm thickness.”
Approximately 70 per cent of the funding for the project comes from the European Union Cohesion Fund – which supports infrastructure projects. A further 30 per cent comes from the local government, which appoints the designer for the new sewerage systems.
Work on the Zdenska Vas and Mala Vas projects has been completed with work in Cesta expected to take place in early March 2016.
Mikulinec said strong local connections helped the UK company secure the contract as well as the proven reliability of the core process.
“The great advantage of the WPL HiPAF system is that it is a very robust and reliable process, which is what you need in these smaller villages.
“WPL has a very close working relationship with Grosupje, a Slovenian water utility and the contractor for this job. In Slovenia WPL works with distributor F3M Levstek, which is very well known and well respected company.”
In order to maximise efficiency once the systems are fully operational WPL will compare influent, effluent and energy use from each village in an ongoing research project. The findings will then be used to adjust the process to make sure each unit is working as smoothly as possible.
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