Pomorie Wastewater Treatment Plant – Pomorie Urban Area
The Pomorie Wastewater Treatment Plant was built between 1980 and 1998. In 2015, the Municipality of Pomorie implemented a project titled “Reconstruction and Modernization of the Pomorie Wastewater Treatment Plant and Reconstruction and Rehabilitation of the Pomorie Water Supply and Sewerage Network.” The project is being implemented with financial support from the “Environment 2007–2013” Operational Program, co-financed by the European Cohesion Fund. The total project budget amounts to 96,686,234 BGN, of which 74,808,508 BGN is grant funding, the state budget – 18,701,877 BGN, and self-financing – 3,176,849 BGN.
The wastewater treatment plant has been handed over for management, maintenance, and operation to “Water Supply and Sewerage” EAD, Burgas.
The Pomorie WWTP serves the town of Pomorie and the Sarafovo neighborhood and has a design capacity of 56,626 PE. The permitted hydraulic capacity during the summer season is 3,004,683 m³/d, and during the winter season it is 12,355 m³/d.
The main facilities on the plant’s premises are:
• primary treatment—screens, horizontal aerated grit and oil separator, emergency equalization tank, selector, denitrification tank;
Biological treatment—surface-aerated biological tanks (5 units), secondary radial clarifiers (3 units);
• UV disinfection module, outlet pumping station, pumping stations for primary and secondary treatment, drainage channels for sewage and sludge water, blowers;
• Active sludge storage tank, 3 aerobic stabilizers, pumping station for stabilized sludge;
• Alfa Laval decanter centrifuges—2 units, sludge thickeners—2 units, 11 sludge drying beds;
• a chemical treatment plant.
In 2015, a SCADA system was implemented at the plant to monitor and control all components from the plant’s inlet to its outlet.
The treated wastewater is discharged into the Black Sea at a deep-water location.