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

Author:
  • H Rosenqvist
  • Barry Ness
Publishing year: 2004
Language: English
Pages: 321-329
Publication/Series: Bioresource Technology
Volume: 94
Issue: 3
Document type: Journal article
Publisher: Elsevier

Abstract english

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.

Keywords

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

Other

Published
  • ISSN: 1873-2976
Barry Ness
E-mail: barry.ness [at] lucsus.lu.se

Senior lecturer

LUCSUS (Lund University Centre for Sustainability Studies)

+46 46 222 48 09

+46 70 259 02 57

Wrangel, 113

Wrangel, Biskopsgatan 5, Lund

59

Associate professor

LUCSUS (Lund University Centre for Sustainability Studies)

+46 46 222 48 09

+46 70 259 02 57

Wrangel, 113

Wrangel, Biskopsgatan 5, Lund

59

LUCSUS
P.O. Box 170, SE-222 70 Lund, Sweden
Phone: +46(0)46- 222 80 81
info [at] lucsus.lu.se