https://en.iz.ru/en/1856922/2025-03-19/lipetsk-authorities-will-allocate-90-million-rubles-design-another-aerotank
Lipetsk authorities will allocate up to 90 million rubles for the design of another aerotank |...
Mar 19, 2025 - Lipetsk announced the search for a contractor to develop a project for the construction of a fifth aerotank at urban wastewater treatment plants. The...