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Effect of retrofitting a saturated zone om the performance of biofiltration for heavy metal removal: preliminary results of a laboratory study
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.ORCID iD: 0000-0001-5548-4397
Monash University, Melbourne, VIC.
Monash University, Melbourne, VIC.
Monash University, Melbourne, VIC.
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2010 (English)In: NOVATECH 2010: 7th International conference on sustainable techniques and strategies in urban water management, Lyon, France, June 27 - July 1st, 2010, Villeurbanne: Graie , 2010Conference paper, Published paper (Refereed)
Abstract [en]

Stormwater biofilters are a stormwater treatment technology which has been becoming increasingly popular. Recently it has been shown that a submerged zone in the filter media improves the magnitude and consistency of nitrogen treatment. Furthermore, the submerged zone has even been shown to be beneficial for retention of heavy metals, particularly Cu. However, most existing biofilters do not include a saturated zone. Since it is relatively simple to retrofit a submerged zone by elevating the outflow, the effect of such a retrofitting on metal removal was investigated in this laboratory study using biofilter columns. It has been shown that a retrofitted submerged zone has a statistically significant but practically small effect on metal removal: Zn removal is slightly enhanced while the effect on Cu removal is inconsistent. Thus, retrofitting of a submerged zone is not recommended if metals are the main target pollutants. But if a submerged zone would have other benefits (e.g. for nitrogen removal or to protect the system from prolonged drying periods) it can be retrofitted without compromising metal removal.

Place, publisher, year, edition, pages
Villeurbanne: Graie , 2010.
National Category
Water Engineering
Research subject
Urban Water Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-39241Local ID: de4101d0-8d95-11df-8806-000ea68e967bOAI: oai:DiVA.org:ltu-39241DiVA: diva2:1012751
Conference
INOVATECH 2010 : 27/06/2010 - 01/07/2010
Note
Godkänd; 2010; 20100712 (godble)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-11-25Bibliographically approved

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CiteExportLink to record
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