Distribution and removal efficiency of heavy metals in two constructed wetlands treating landfill leachate
2011 (Engelska)Ingår i: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 64, nr 8, s. 1597-1606Artikel i tidskrift (Refereegranskat) Published
Abstract [en]
The results of heavy metals (Fe, Mn, Zn, Ni, Cu, Cr, Pb, Cd) removal and partitioning between aqueous and solid phases at two treatment wetlands (TWs) treating municipal landfill leachates are presented. One of the TWs is a surface flow facility consisting of 10 ponds. The other TW is a newly constructed pilot-scale facility consisting of three beds with alternately vertical and horizontal sub-surface flow. The metals concentrations were analysed in leachate (both TWs) and bottom sediments (surface flow TW). Very high (90.9-99.9%) removal rates of metals were observed in a mature surface flow TW. The effectiveness of metals removal in a newly constructed pilot-scale sub-surface flow wetland were considerably lower (range 0-73%). This is attributed to young age of the TW, different hydraulic conditions (sub-surface flow system with much shorter retention time, unoxic conditions) and presence of metallic complexes with refractory organic matter
Ort, förlag, år, upplaga, sidor
London: IWA Publishing, 2011. Vol. 64, nr 8, s. 1597-1606
Nyckelord [en]
organo-metallic complexes, partitioning, prescipitation, redox conditions
Nationell ämneskategori
Teknik och teknologier
Identifikatorer
URN: urn:nbn:se:hh:diva-16582DOI: 10.2166/wst.2011.680ISI: 000296564600004Scopus ID: 2-s2.0-80054886975OAI: oai:DiVA.org:hh-16582DiVA, id: diva2:457973
Projekt
Process- och resursoptimering av konstruerade akvatiska system2011-11-212011-11-212017-12-08Bibliografiskt granskad