Impact of Biochar on Treatment Performance of Roadside Sand Filters: Field Monitoring and Geochemical Modelling

Eero Assmuth (Corresponding author), Nora Sillanpää, Laura Wendling, Harri Koivusalo

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

Roadside filters can be used to treat polluted stormwater. In this study, sand and sand-biochar filters were investigated in full-scale field conditions during three rain events. Stormwater influent and effluent of the filters were sampled with high frequency and up to 29 water quality parameters were determined. The obtained field data was analyzed and used as an input for geochemical modelling. The study showed promising results for both filter types with respect to retention of metals, total suspended solids and total phosphorus. Biochar amendment had clear improvement only for nitrogen removal; some release of organic carbon from biochar filter material was observed. Concentrations of most measured parameters varied considerably during and between the studied events. Geochemical modelling showed that precipitation is one possible removal mechanisms for many pollutants along with sorption and physical filtration.

Original languageEnglish
Title of host publicationNew Trends in Urban Drainage Modelling
Subtitle of host publicationUDM 2018
EditorsGiorgio Mannina
PublisherSpringer
Pages79-84
Number of pages6
ISBN (Electronic)978-3-319-99867-1
ISBN (Print)978-3-319-99866-4
DOIs
Publication statusPublished - 1 Sep 2019
MoE publication typeA4 Article in a conference publication
Event11th International Conference on Urban Drainage Modelling, UDM 2018: UDM 2018 - Palermo, Italy
Duration: 23 Sep 201826 Sep 2018

Publication series

SeriesGreen Energy and Technology
ISSN1865-3529

Conference

Conference11th International Conference on Urban Drainage Modelling, UDM 2018
CountryItaly
CityPalermo
Period23/09/1826/09/18

Keywords

  • Biochar amendment
  • PHREEQC
  • Stormwater filtration

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    Assmuth, E., Sillanpää, N., Wendling, L., & Koivusalo, H. (2019). Impact of Biochar on Treatment Performance of Roadside Sand Filters: Field Monitoring and Geochemical Modelling. In G. Mannina (Ed.), New Trends in Urban Drainage Modelling: UDM 2018 (pp. 79-84). Springer. Green Energy and Technology https://doi.org/10.1007/978-3-319-99867-1_14