LANdfill leachate


THe case


According to a prescription of the competent authority, the owner of the landfill has to implement a treatment of the leachate before the discharging of the outflow in the municipal sewage (directed to the municipal wastewater treatment plant). The legal duty could be the opportunitiy to implement a circular solution consisting in secondary raw material recovery. In particular, a stripping process could allow to recover ammonium sulfate

expected results

  • Reduction of tank-trucks trips

  • Recovery of fertilizer salt

  • On site leachate treatment (nitrogen removal)

  • On-site treatment + transport by sewage system

  • LCA and LCC assessment

  • Lowering of air pollution at local scale

  • Substitution of traditional products

  • Performance benefits for downstream wastewater treatment plant

  • Money save

  • Further and continuous process optimization

possible costraints

  • Legal uncertainty

  • Pilot plant

  • Quali-quantitative variability

  • Energy sources (biogas production is not enough to feed CHP motor)


  • Without End of Waste declaration by competent authority, the producer is in a risky border-line position, assuming all the legal responsibility without any validation of the Competent Authority

  • Potential higher environmental impact (with a LCA perspective); lower “economy of scale"

  • Not optimized processes; lower performance

  • Alternative energy source with higher impacts


Pilot progress and news

  • June 2019 – Conclusion of the test phase

For more informations on the pilot case, please contact:

Lorena Franz - ARPAV Omar Gatto - Etra Spa

tel: +39 0422 558640-47 +39 049 8098682