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Metal Sorption to Natural Filter Substrates for Storm Water Treatment - Column Studies
Mälardalens högskola, Institutionen för samhällsteknik.
2002 (Engelska)Ingår i: The Science of the Total Environment, ISSN 0048-9697, Vol. 298, nr 1-3, s. 17-24Artikel i tidskrift (Refereegranskat) 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. 

Ort, förlag, år, upplaga, sidor
2002. Vol. 298, nr 1-3, s. 17-24
Nationell ämneskategori
Vattenteknik
Identifikatorer
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, id: diva2:121113
Tillgänglig från: 2005-11-24 Skapad: 2005-11-24 Senast uppdaterad: 2016-01-15Bibliografiskt granskad
Ingår i avhandling
1. Constructed Filters and Detention Ponds for Metal Reduction in Storm Water
Öppna denna publikation i ny flik eller fönster >>Constructed Filters and Detention Ponds for Metal Reduction in Storm Water
2003 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Förlag
s. 45
Serie
Mälardalen University Press Dissertations, ISSN 1651-4238 ; 4
Nationell ämneskategori
Annan naturresursteknik
Forskningsämne
Energi- och miljöteknik
Identifikatorer
urn:nbn:se:mdh:diva-55 (URN)91-88834-40-9 (ISBN)
Disputation
2003-03-20, Gamma, Västerås, 10:00 (Engelska)
Opponent
Handledare
Tillgänglig från: 2009-07-16 Skapad: 2006-01-12 Senast uppdaterad: 2009-07-16Bibliografiskt granskad

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