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Spårning av tungmetaller i Västra strandens avloppsreningsverks ledningsnät
Halmstad University, School of Business, Engineering and Science.
2019 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Sewage sludge contains several important nutrients that can be utilized byrecycling to arable land. This is especially important for phosphorus which is a finite resource and an important nutrient in agriculture. It is, however, important that the sewage sludge is free from high concentrations of harmful substances. In the spring of 2013 passive samplers (ecoscope) were used to track sources of metals in the waste water system of Västra strandens waste water treatment plant in Halmstad. The results showed differences in the level of metal contaminants in terms of both individual metals and the total load of metals. The results suggest that there is a possible source of cadmium upstream the measuring point that is called KärlekenANB 492. This is supported by the measurement at point (P2) downstream that also showed the presence of high levels of cadmium. Silver at two sampling points (P2 and KarlXIANB 465) have elevated values compared to other sampling points. The measurements performed in combined systems have probably been affected by the snow melting and the winter conditions that prevailed during the exposure period. High levels of zinc occurred mainly in areas with combined systems which indicate that surface water is a likely source for this metal.Further investigations have to be done to track specific sources of heavy metals so that measures can be taken to reduce them.

Place, publisher, year, edition, pages
2019.
Keywords [sv]
fosfor, uppströmsarbete, ecoscope, avloppsslam, slamspridning
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:hh:diva-39171OAI: oai:DiVA.org:hh-39171DiVA, id: diva2:1298577
External cooperation
Laholmsbuktens VA
Subject / course
Environmental Science
Educational program
Environmental Programme, 180 credits
Presentation
2019-03-24, Halmstad, 20:33 (Swedish)
Examiners
Available from: 2019-03-26 Created: 2019-03-24 Last updated: 2019-03-26Bibliographically approved

Open Access in DiVA

fulltext(4085 kB)13 downloads
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Type fulltextMimetype application/pdf

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Johansson, Kristian
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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • 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