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Phosphorus binding to Filtra P in batch tests
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.ORCID iD: 0000-0003-0520-796X
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0002-1033-0244
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.ORCID iD: 0000-0001-9541-3542
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2012 (English)In: Environmental technology, ISSN 0959-3330, E-ISSN 1479-487X, Vol. 33, no 9, p. 1013-1019Article in journal (Refereed) Published
Abstract [en]

Recent guidelines from the Swedish Environmental Protection Agency recommend stricter regulations for phosphorus (P) reduction in small-scale wastewater treatment, which raises the need for additional and novel treatment steps in small-scale facilities. Following a biological pre-treatment, filter systems can be a convenient option. In this study, the P binding capacity of the filter material Filtra P was investigated in batch tests. The batch test method was evaluated with respect to the effects of liquid-to-solid ratio and particle size on P binding capacity. For initial concentrations (ci ) between 3 and 100 mg L−1, the P in the solution was completely and rapidly bound to the material, indicating that Filtra P was an efficient substrate for this process. The maximum amount of bound P was 4.3 ± 0.64 g kg−1 at c i = 300 mg L−1. P binding capacity and turbidity measured in the supernatant correlated positively. Turbidity was probably caused by calcium-P-precipitates suggesting precipitation was the major removal mechanism. Neither liquid-to-solid ratio, nor particle size, affected P binding capacity significantly (α = 0.05) at ci  = 1000 mg L−1, confirming that the conditions used in the batch tests were appropriate. In full-scale applications, the precipitate formed may be at risk of being washed out of the filter, leading to low total P reduction and recovery.

Place, publisher, year, edition, pages
2012. Vol. 33, no 9, p. 1013-1019
National Category
Water Engineering Fluid Mechanics and Acoustics
Research subject
Urban Water Engineering; Fluid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-9174DOI: 10.1080/09593330.2011.604878ISI: 000303582100007Scopus ID: 2-s2.0-84860753112Local ID: 7bceaac7-5b74-4177-98ef-4871414e306aOAI: oai:DiVA.org:ltu-9174DiVA, id: diva2:982112
Note
Validerad; 2012; 20111016 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Herrmann, IngaJourak, AmirLundström, T. StaffanHedström, AnnelieViklander, Maria

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