Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Phosphorus reduction in filters for on-site wastewater treatment
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.ORCID iD: 0000-0001-9541-3542
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.ORCID iD: 0000-0003-0520-796X
2018 (English)In: Journal of Water Process Engineering, ISSN 2214-7144, Vol. 22, p. 210-217Article in journal (Refereed) Published
Abstract [en]

Discharges of phosphorus (P) from on-site wastewater treatment systems generally contribute to eutrophication problems in Swedish freshwaters and, ultimately, in the Baltic Sea. Such concerns have led to a growing interest in improving P removal in treatment facilities. This study investigated the reduction of P in 12 full-scale on-site treatment systems featuring sand filters and alkaline P-filters by sampling and analysing filter influents and effluents. The flow-proportional samples collected were analysed for total and dissolved P, BOD7, total and dissolved organic carbon (TOC and DOC), and pH. Seven of the eight investigated sand filters did not provide satisfactory total P reduction; the likely explanations are filter clogging and wastewater dilution by extraneous water. In addition, effluents from four of the eight sand filters had total P concentrations higher than 3 mg L−1, which is the Swedish effluent limit recommended for common receiving waters, indicating that a subsequent polishing step would be needed. Six of the nine investigated P-filters reduced P adequately, with total P concentrations in the effluent ranging between 0.1 and 1.9 mg L−1. The three underperforming P-filters had effluent pH values below 9; filter age, clogging, and hydraulic overload were identified as probable reasons for their poor performance. A statistically significant correlation was found between total-P reduction and filtrate pH, but no significant correlation was detected between organic load in the influent and P reduction by the P-filters. The P-filter media replacement frequency could not be established, but filtrate pH appeared to be a good estimator.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 22, p. 210-217
Keywords [en]
Sand filters; Polonite; Small-scale; Septic system; Composite samples
National Category
Environmental Engineering Water Engineering
Research subject
Urban Water Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-67812DOI: 10.1016/j.jwpe.2018.02.005ISI: 000431414300025Scopus ID: 2-s2.0-85042085908OAI: oai:DiVA.org:ltu-67812DiVA, id: diva2:1186950
Note

Validerad;2018;Nivå 2;2018-05-17 (andbra)

Available from: 2018-03-01 Created: 2018-03-01 Last updated: 2018-05-17Bibliographically approved

Open Access in DiVA

fulltext(556 kB)10 downloads
File information
File name FULLTEXT01.pdfFile size 556 kBChecksum SHA-512
4591cf7cdaf1f35d2cb3abd97652e3f546e2fe63ffd35d8be1736aa9d60fbf699824d3a54dfdde0023f5d7a9ad184778c0a87f15dfddbd6670291aa2fcd17441
Type fulltextMimetype application/pdf

Other links

Publisher's full textScopushttps://www.sciencedirect.com/science/article/pii/S2214714417307985

Search in DiVA

By author/editor
Vidal, BrendaHedström, AnnelieHerrmann, Inga
By organisation
Architecture and Water
Environmental EngineeringWater Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 10 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 73 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf