Advanced

Hydraulic performance of a full-scale peat and ash biofilter in treatment of industrial landfill leachate.

Kängsepp, Pille LU ; Mathiasson, Lennart LU ; Dahlblom, Peter and Hogland, William (2009) In Waste Management & Research 27. p.512-519
Abstract
The purpose of this study was to evaluate the hydraulic performance of a full-scale on-site vertical-flow biofilter, consisting of a mixture of peat and carbon-containing ash, and a 500 m(3) equalization pond prior to the filter-system. The treatment plant was constructed to clean up leachate from an industrial mono-landfill that contained shredder residues of end-of-life vehicles and white goods. With the limited storage capacity of the equalization pond, peak loading rates exceeded up to five to six times the designed daily hydraulic load limit of the biofilter system. Such relatively short overloading events did not negatively affect the purification efficiency. To provide the designed annual irrigation rate on the biofilter of 97 m(3)... (More)
The purpose of this study was to evaluate the hydraulic performance of a full-scale on-site vertical-flow biofilter, consisting of a mixture of peat and carbon-containing ash, and a 500 m(3) equalization pond prior to the filter-system. The treatment plant was constructed to clean up leachate from an industrial mono-landfill that contained shredder residues of end-of-life vehicles and white goods. With the limited storage capacity of the equalization pond, peak loading rates exceeded up to five to six times the designed daily hydraulic load limit of the biofilter system. Such relatively short overloading events did not negatively affect the purification efficiency. To provide the designed annual irrigation rate on the biofilter of 97 m(3) day(-1) (or 133 mm day(-1)), with large seasonal variations in precipitation, a relatively large pond would be needed. Calculations showed that a storage volume of about 23 000 m(3) would be sufficient for annual leachate volumes up to about 35 000 m(3). A combination of sprinkler and drip irrigation with straw insulation of the latter made it possible to run the plant continuously even when the ambient air temperature was below zero for more than a month at a time. The grain size distribution of the biofilter medium was noticeably changed after 4 years of usage due to the loading of suspended solids from the leachate and decomposition of the peat, causing reduced hydraulic conductivity. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Waste Management & Research
volume
27
pages
512 - 519
publisher
SAGE Publications Inc.
external identifiers
  • wos:000268389100008
  • pmid:19423574
  • scopus:68349114777
ISSN
1096-3669
DOI
10.1177/0734242X08096138
language
English
LU publication?
yes
id
5d7a72ea-042a-419b-98e7-4a736e737fa1 (old id 1412547)
date added to LUP
2009-06-11 09:56:11
date last changed
2017-02-26 03:51:22
@article{5d7a72ea-042a-419b-98e7-4a736e737fa1,
  abstract     = {The purpose of this study was to evaluate the hydraulic performance of a full-scale on-site vertical-flow biofilter, consisting of a mixture of peat and carbon-containing ash, and a 500 m(3) equalization pond prior to the filter-system. The treatment plant was constructed to clean up leachate from an industrial mono-landfill that contained shredder residues of end-of-life vehicles and white goods. With the limited storage capacity of the equalization pond, peak loading rates exceeded up to five to six times the designed daily hydraulic load limit of the biofilter system. Such relatively short overloading events did not negatively affect the purification efficiency. To provide the designed annual irrigation rate on the biofilter of 97 m(3) day(-1) (or 133 mm day(-1)), with large seasonal variations in precipitation, a relatively large pond would be needed. Calculations showed that a storage volume of about 23 000 m(3) would be sufficient for annual leachate volumes up to about 35 000 m(3). A combination of sprinkler and drip irrigation with straw insulation of the latter made it possible to run the plant continuously even when the ambient air temperature was below zero for more than a month at a time. The grain size distribution of the biofilter medium was noticeably changed after 4 years of usage due to the loading of suspended solids from the leachate and decomposition of the peat, causing reduced hydraulic conductivity.},
  author       = {Kängsepp, Pille and Mathiasson, Lennart and Dahlblom, Peter and Hogland, William},
  issn         = {1096-3669},
  language     = {eng},
  pages        = {512--519},
  publisher    = {SAGE Publications Inc.},
  series       = {Waste Management & Research},
  title        = {Hydraulic performance of a full-scale peat and ash biofilter in treatment of industrial landfill leachate.},
  url          = {http://dx.doi.org/10.1177/0734242X08096138},
  volume       = {27},
  year         = {2009},
}