Equivalent Population

Association of León and its districts.

Physical-chemical and sedimentation of the sewerage of Leon and its districts.

General Information

  • Project: WWTP León
  • Entity: Association of León and its districts
  • Location: Vilecha, León. Spain
  • Design flow: 107,100m3/day
  • Population: 330,000

Key points


Large particle screens, sifting, desander, sand classifier, deoiler and influent flow metre

Primary treatment:

Physical-chemical and sedimentation

Secondary treatment:

Biological treatment of activated sludge of prolonged airing and medium load. O2 input / Mud recirculation / Sedimentation

Mud treatment:

Thickener, sifting, digestion, dehydration and thermal drying


Disinfection and deodorising

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