General Information

• Project: WWTP Copero, Seville, Spain
• Client: Metropolitan Company for the Supply and Waste Treatment for the Seville Water Area (Empresa Metropolitana de Abastecimiento y Saneamiento de Aguas de Sevilla (EMASESA))
• Location: Seville, Spain
• Population: 1,487,500 equivalent inhabitants (design); 711,000 equivalent inhabitants (current)
• Capacity: 255,000 m3/day (design); 135,000 m3/day (current)

Key points

Water Line

• Intake
• Pre-screening (2 channels)
• Source water pumping
• Screening (6 channels)
• Degritting and extracting of floating matter (6 units)
• Primary separation (6 units)
• Biological flow treatment through pistons (8 units)
• Sludge recirculation
• Secondary separation (8 units)
• Tertiary treatment for service water
• Chlorination

Sludge Line

• Gravity thickening for primary sludge (4 units)
• Floatation for biological sludge (3 units)
• Mixing of thick and floating sludge
• Anaerobic digestion (8 units)
• Deposit for digested sludge (2 units)
• Sludge warming
• Gas storage
• Burning of excess gas
• Sludge dewatering (4 centrifugal separator units)
• Storage of dewatered sludge
• Biogas cogeneration (4 units)

Pumping Stations

• Drinking Water Pumping Station at Guadaira M.D: Pumping of sewage and rain water with a capacity of 31,8 m3/s.
• Drinking Water Pumping Station at Guadaira M.I. Tornillos: Pumping of sewage and rain water with a capacity of 8 m3/s.
• Residual Water Pumping Station at Polígono la Isla: Pumping of sewage with a capacity of 1,112 m3/s.
• Drinking Water Pumping Station at Copero: Pumping of rain water with a capacity of 1,112 m3/s.
• Drinking Water Pumping Station at Arroyo Culebra: Pumping of rain water with a capacity of 0,90 m3/s.