LANdfill leachate

Campodarsego-padua-IT

THe case

PERFORMERS

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

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  • 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)

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  • 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

Timetable

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

progetti@arpa.veneto.it o.gatto@etraspa.it

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