Equivalent Inhabitants

Waste Water Treatment Plant

Mairena del Alcor Waste Water Treatment Plant

General Information

  • Entity: GIASA
  • Location: Seville, Spain
  • Population: 43,025 eq/inhab
  • Flow: 9,220 m3/day

Key points


  • Coarse solids breakdown with automatic grids
  • Fine solids breakdown with two 3 mm span self-cleaning sieves
  • Sand/silt trapping-grease trapping in two longitudinal aerated channels
  • Sand/silt classification and grease concentrating
  • Low load activated sludge biological treatment nitrification and denitrification in two carousel type tanks of 4,335 m3 each
  • Aeration by means of surface rotors, three per tank, 7.5 m long
  • Secondary settling in two units 22 m in diameter
  • Sodium hypochlorite disinfection
  • Stabilising gravity sludge thickening in one ø 8 m unit

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