63,367

Supplied Inhabitants

Waste Water Tratment Plant

Alto Oria (Legorreta) Waste Water Tratment Plant

 

General Information

  • Entity: Diputación Foral de Gipuzkoa
  • Localización: Legorreta, Guipúzcoa, Spain
  • Population: 63,367 hab/eq
  • Capacity: 17,280 m3/day

Key points

Quality of Water :

  • DBO5: Intake 220 Outlet 15 mg/l
  • S.S.: Intake 286 Outlet 20 mg/l
  • N-NH4: Intake 27,3 Outlet 2 mg/l
  • N-NO3: Intake Outlet10 mg/l
  • Characteristics Sludge
  • Stability: 40 %
  • Dryness: 25 %

Treatment

  • Raw water well/screening
  • Raw water pumping
  • Desanding-degreasing
  • Primary settling
  • Biological reactor with nutrients removal
  • Sludge recycling pumping
  • Auxiliary recirculation pumping
  • Dephosphatation (Chemical)
  • Secondary settling
  • Primary sludge pumping
  • Primary sludge pumping
  • Gravity thickening
  • Excess sludge pumping
  • Thickening by flotation
  • Mixing of thickened sludge
  • Sludge pumping to anaerobic digestion
  • Anaerobic digestion
  • Biogas stockage
  • Digested sludge stockage
  • Sludge dewatering
  • Dehydrated sludge storage
  • Electric equipments
  • Control equipment
  • Auxiliary means

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