«Green» energy at the Northern Aeration Station

In 2018, a complex of two methane tanks and a gasholder was put into operation at the Northern Aeration Station. In the methane tanks, the silt residue left after wastewater treatment is fermented. The fermentation process produces about 200 cubic meters of biogas from the sludge. After burning, the accumulated in the gas tank biogas can be used as biofuel to heat the station.