Design and build of a turnkey wastewater treatment plant
Oradea is located in the eastern part of the Great Hungarian Plain on the banks of the river Crişul Repede (aka Sebes-Körös). The city center is 13 km away from the Hungarian border. The foothills of the Apuseni mountains end at the north eastern area of the city. The Oradea WWTP was designed for 210,000 inhabitants with a dry weather flow for the entire plant of 190,000 m³ per day.
Primary clarification is designed with max. 345,600 m³ per day whereas the difference after primary clarification is discharged into the river via bypass.
The WWTP was financed through a loan from the EBRD (European Bank for Reconstruction and Development) and ISPA funds (Instrument for Structural Policies for Pre-Accession).
Mechanical treatment includes coarse and fine screens with screenings press, grit chamber, aerated grease removal and primary sedimentation tank.
Biological treatment includes aeration tanks and final sedimentation tanks.
Sludge treatment includes static excess sludge thickeners with centrifuge, digesters, sludge storage tank and de-watering centrifuges.
Biogas forming in the digesters is stored in gas tanks and is used to heat the digesters and the administration building with the help of a combined heat and power plant (CHP). The CHP generates approx. 720 kW of power.