Equivalent Population

Association of León 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.

Discover other projects of ACCIONA

All of our projects