As part of the project carried out by NDI ENERGY, a modern wastewater treatment plant was constructed in Sośnie.

The works covered a wide range of activities, including wastewater treatment technologies, civil structures, electrical works, automation and control systems, and site development.

The project included the construction of a wastewater collection and conveyance system with a mechanical treatment stage, a biological wastewater treatment reactor, and a sludge management facility comprising a sludge stabilization chamber as well as sludge dewatering and sanitation installations.