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Mobil slamavvattning med polymer: Jämförelse av avloppsvattens partikelhalt beroende av tömningsmetod
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
2018 (Swedish)Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

The purpose of the study was to evaluate which method for emptying of septic tanks that contributed with the lowest particle content in outgoing water during the period of a year. The methods for emptying in the comparison was mobile dewatering using polymer, complete pump-out and mobile dewatering using mechanic separation. Within the study, wastewater was sampled from septic tanks third compartment, however, only from septic tanks that were dewatered using polymer. Samples were taken one time before emptying followed by five occasions after emptying. The results from those samples were compared to previously existing results from complete pump-out and mobile dewatering using mechanic separation. Due to differences in method for sampling, the comparison in the discussion was limited to; samples taken before emptying and two weeks after emptying from septic tanks that had been completely pumped-out and dewatered using mechanic separation. The samples taken before emptying showed the particle content after using the septic tanks for a year since the previous emptying. Based on those samples there were no significant difference between mobile dewatering using polymer and complete pump-out or between mobile dewatering using polymer and mobile dewatering using mechanic separation. Two weeks after emptying the lowest particle contents were found in septic tanks that had been completely pumped-out followed by the two dewatering methods.

Place, publisher, year, edition, pages
2018. , p. 15
Keywords [en]
Mobile dewatering, polymer, septic tank, domestic wastewater, suspended solids
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:umu:diva-149997OAI: oai:DiVA.org:umu-149997DiVA, id: diva2:1229468
External cooperation
Vatten och Avfallskompetens i Norr AB
Subject / course
Examensarbete i miljö och hälsoskydd
Educational program
Master of Science Programme in Environmental Health
Available from: 2018-07-09 Created: 2018-06-30 Last updated: 2018-07-09Bibliographically approved

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b8cb4df7eaa8fc455c576c8d3531a3d2f83044f736ff8e36c1836707d6c0f869a9c68c58cc6781f88b254002c2051ed9acaa8a1b4497bc8dfc9ca2397a623104
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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