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Wastewater treatment

Station d'épuration des eaux usées Telde Station d'épuration des eaux usées Telde

Wastewater treatment processes to return it to the natural environment

Highlighted Projects

The 475 wastewater treatment plants that Agbar manages in countries such as Spain, Chile, Cuba, China and Algeria apply advanced wastewater treatment processes in order to return it to the natural environment in the best health and environmental conditions.

Physicochemical treatments, biological treatments, reverse osmosis, reverse electrodialysis, sludge treatment, thermal drying and cogeneration, among others, form part of the latest technology developed by Agbar for wastewater treatment.

Highlighted Projects

  • Sludge drying

    BARCELONA. METROFANG

    • Capacity: 4 lines x 4,000 l/h (30% of the sludge of Catalonia)
    • Project range: > 10 million euros

    ALICANTE. CEMEX

    Waste energy recovery from the cement factory to dry the sludge

    • Capacity: 2 lines x 3,000 l/h
    • Project range: 2-5 million euros

    BOURDEAUX. LOUIS FARGUE

    Heat pump and biogas use for drying process

    • Capacity: 1 lines x 1,500 l/h
    • Project range: < 2 million euros
  • La Farfana WWTP in Santiago de Chile (Chile)
    • Operated by AGBAR since 2004
    • Maximum capacity: 760,320 m3/day
    • Water Treated: 217.7 hm3/year (2009)
    • Energy consumption 56.1 Gwh /year >> 0.26 kwh/m3

    Technologies

    • Conventional Water Line: (16 treatment lines)
    • Primary and Secondary Sedimentation
    • High load aeration. Piston carousel flow type biological reactors
    • Advanced Treatments water line
    • Disinfection using chlorine gas
    • Sludge Line: Concentration of primary sludge through gravity and biological sludge through flotation
    • Anaerobic digestion at 35 ºC, 8 digesters (15,000 m3/u.), sludge retention time of 20 days
    • Production and management of 139,337 t/year of dehydrated sludge