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Removal of iron and arsenic from groundwater, Piano d’Orta (PE), Italy

The groundwater treatment plant removes dissolved iron and arsenic from groundwater on an industrial site.
  • Groundwater treatment plant to remove dissolved iron and arsenic. ©ZUT
    Groundwater treatment plant to remove dissolved iron and arsenic. ©ZUT
Location
Piano d’Orta, Bolognano (Italy)
Client
Energy Sector
Key figures
- Flow rate: 20 m³/h
- Main Contaminants: Arsenic, Iron, Selenium, Lead and Sulphates
- Sodium hypochlorite dosing controlled by redox measuremen
Special features
Sulphate removal through anion exchange resin, with automatic flow regulation to optimize treated volumes to reduce resin consumption and extending its service life
Period of service
Since June 2025
  • Filters of the treatment train.
    Filters of the treatment train. ©ZUT
  • Fully automated system via SPS.
    Fully automated system via SPS. ©ZUT

Fully automated treatment system

Groundwater in this industrial site in Piano d’Orta, Bolognano (PE), was impacted by inorganic contaminants including arsenic, iron, selenium, lead and sulphates. In June 2025, ZÜBLIN Umwelttechnik installed a new Pump & Treat system as part of the hydraulic containment measures at the site. The extracted groundwater is first equalized and oxidized by dosing sodium hypochlorite, controlled by the redox potential, to promote the oxidation and subsequent filtration of dissolved iron and other metals. The water is then treated through an adsorption stage with ferric hydroxide for the removal of arsenic, followed by a guard sand filter and an ion-exchange unit for sulphate removal, before the treated water is released into a surface water body.
The new treatment module has a design capacity of 20 m³/h.

Scope of services

  • Plant supply and installation
  • Integration of the new units with the existing treatment system
  • Implementation of the process and control system
  • Supervision and process monitoring with data management
Marco Zamborlini
Branch Manager Italy
+39 0283987700
marco.zamborlini@zueblin.de