Between 2021 and 2022, TETRA Bitola successfully implemented a significant public infrastructure project aimed at environmental protection and utility network modernization. The project involved the complete reconstruction of key wastewater pumping stations under the investment of PE COLLECTOR SYSTEM OHRID. Field activities were carried out in several phases, covering both the eastern and western shores of Lake Ohrid, specifically the Eleshec, Metropol, and Kalishta pumping stations.

The scope of work included the complete dismantling of old, worn-out equipment, followed by the procurement, delivery, installation, and commissioning of new submersible wastewater pumps. The systems were delivered complete with PE pressure pipelines, modern electrical power supply installations, and advanced control automation. A total of 6 high-quality TSURUMI Japan pumps equipped with a specialized cutter mechanism were implemented across the three stations to ensure smooth operation with wastewater.

At PS Eleshec, 2 pumps were installed (duty and standby) with a capacity of Q=21 l/s, head H=10 m, and power P=6 kW. At PS Metropol, 2 units were installed with a capacity of Q=24 l/s, head H=15 m, and power P=15 kW, while at PS Kalishta, another 2 pumps were integrated with a capacity of Q=18 l/s, head H=24 m, and power P=15 kW.

Each set was delivered with its own protective control panel, with TETRA providing a long-lasting and reliable technical solution for the municipal sector.

The total scope of work resulted in the commissioning of three complex pumping systems. At the Brod-Gneotino mine, 2 sets were installed consisting of TSURUMI Japan submersible pumps (Q=100 l/s, H=40 m, P=75 kW) mounted on special floating pontoons, connected in series with BBA PUMPS Netherlands centrifugal pumps (Q=100 l/s, H=95 m, P=160 kW). These are connected to DN250 PN16 GRE pipelines from Dutch manufacturer FPI-Netherlands with a total length of 3,500 meters. For the Suvodol mine, 1 identical set was installed, but featuring a more powerful BBA PUMPS centrifugal pump (P=400 kW, H=160 m) and a GRE pipeline 1,800 meters long.

The complete equipment was commissioned alongside electrical substations and control panels equipped with variable frequency drives (VFDs), automation, and protective systems. With this project, TETRA once again demonstrated its capability to handle the largest industrial challenges in the region.