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An economic analysis of leachate purification through willow-coppice vegetation filters

Publiceringsår: 2004
Språk: Engelska
Sidor: 321-329
Publikation/Tidskrift/Serie: Bioresource Technology
Volym: 94
Nummer: 3
Dokumenttyp: Artikel i tidskrift
Förlag: Elsevier


In this study an economic analysis of the purification of integrated solid waste treatment facility leachates through a willow-coppice (Salix) vegetation filter in southern Sweden was carried out. Calculations were based on the use of two computer models that were initially used in estimating a pump-and-pipe irrigation system for a 36-ha willow-coppice plantation to purify an average annual quantity of 195,000 m(3) of leachate with an average nitrogen content of 24 g/m(3). Results showed that facility leachates could be purified at US$0.34/m(3) compared with US$0.62/m(3) for that of conventional leachate treatment at a wastewater treatment plant. Furthermore, results revealed that the increased income from willow growing and sale of the biomass chips represented only a small factor in the overall cost of the purification technique - decreasing purification costs to US$0.326/m(3). Sensitivity analyses also demonstrated that, because of the large leachate holding pond expense, only a fraction of facility leachate should be treated through a vegetation filter.


  • Social Sciences Interdisciplinary
  • economic calculations
  • Salix
  • willow-coppice crops
  • vegetation filter
  • landfill leachates
  • leachate purification


  • ISSN: 1873-2976

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