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Metal Sorption to Natural Filter Substrates for Storm Water Treatment - Column Studies
Mälardalen University, Department of Public Technology.
2002 (English)In: The Science of the Total Environment, ISSN 0048-9697, Vol. 298, no 1-3, 17-24 p.Article in journal (Refereed) Published
Abstract [en]

Storm water generated from road runoff contains pollutants such as metals that are either dissolved in storm water or bound to particulates. Using detention ponds for the treatment of storm water from road runoff, where particles can settle, can reduce the level of particulate-bound metals in the water, while small particles and dissolved matter pass through the detention pond. Some of these metals can be removed by filtrating water through specially constructed filter systems. This investigation is a laboratory study where different filter substrates were tested in order to evaluate their efficiency in reducing heavy metals from water. Metal solutions were filtered through columns filled with various substrates consisting of combinations of calcium silicate rock (opoka), zeolite and peat. The metal-removal efficiency was correlated to hydraulic load, and for the metal species the reduction efficiency decreased with increased hydraulic load. Mixtures of opoka and zeolite were found to be superior to the other filter-substrate combinations tested with regard to both hydraulic aspects and removal efficiency. Peat mixed with the calcium silicate rock was not successful due to clogging which stopped the experiment. A manufactured product made from the calcium silicate rock (burned opoka) was found to be less useful because of its calcium oxide (CaO) content. Among the tested filter substrates, mixtures of opoka and zeolite seemed to be the most useful compositions with respect to reduction-efficiency and clogging aspects. The removal capacity of metals varied from 0.6 to 1.8 kg m(-3) depending on the metal and the filter substrate. 

Place, publisher, year, edition, pages
2002. Vol. 298, no 1-3, 17-24 p.
National Category
Water Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-4181DOI: 10.1016/S0048-9697(02)00142-0ISI: 000180383700002Scopus ID: 2-s2.0-0037152328OAI: oai:DiVA.org:mdh-4181DiVA: diva2:121113
Available from: 2005-11-24 Created: 2005-11-24 Last updated: 2016-01-15Bibliographically approved
In thesis
1. Constructed Filters and Detention Ponds for Metal Reduction in Storm Water
Open this publication in new window or tab >>Constructed Filters and Detention Ponds for Metal Reduction in Storm Water
2003 (English)Doctoral thesis, comprehensive summary (Other academic)
Publisher
45 p.
Series
Mälardalen University Press Dissertations, ISSN 1651-4238 ; 4
National Category
Other Environmental Engineering
Research subject
Energy- and Environmental Engineering
Identifiers
urn:nbn:se:mdh:diva-55 (URN)91-88834-40-9 (ISBN)
Public defence
2003-03-20, Gamma, Västerås, 10:00 (English)
Opponent
Supervisors
Available from: 2009-07-16 Created: 2006-01-12 Last updated: 2009-07-16Bibliographically approved

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Citation style
  • apa
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