Reconstruction and expansion of the group sewage treatment plant in Dębogórze. We managed to m.in. modernize two biological reactors and build one new one with dimensions of 100m x 50m x 5.5m. In addition, two secondary sedimentation tanks with a diameter of 42 m were built and centrifuge stations were expanded. Technological equipment was also replaced and other facilities were modernized. The total area of the facility is 400 thousand. m2, capacity of 100 thousand. m³/day. The net value of the project was PLN 51 million.