works, delivery and installation of electric and machine equipment, commissioning,
trial operation and training of client’s staff.
The Novo mesto wastewater
treatment plant has a capacity of 55,000 PE. The retrofit project included the
construction of an additional building to dry out sludge with the associated infrastructure
and was one of the first facilities of its kind in Slovenia and on the Balkan
Peninsula. The project included the development of sludge drying technology using a temperature
regime of 70-90°C, the construction of a combined heat and power plant (CHP) to
generate electric energy and heat together with heat transfer, exhaust air and
dry sludge storage systems.
The heat gained in this way is used in the sludge drying system via heat
exchangers for hot air drying of the de-watered sewage sludge. The dry matter content in the de-watered
sludge increases in the drying process from 23% to more than 90%.
The work was carried out while the existing
wastewater treatment plant was in operation and was completed more than 30 days
before the agreed contract term expired. This project was selected as the
winning project by coordination of the Ministry of Environment and Spatial
Planning among all projects that had applied for funding from the “EU project,
my project” campaign for European cohesion projects in the previous financial
period (2007 to 2015).