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Struvite Precipitation and Biological Dissolutions.
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering. (VA-teknik; Vatten, Avlopp och Avfall, Water, Sewage and Waste technology)
2010 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Struvite is a salt that is formed out of 

Mg2+,NH4+ and PO43- and it crystallizes in form of MgNH4PO4.6H2O. Struvite‟s (magnesium ammonium phosphate or MAP) precipitation has recently been regarded as an interesting technique to remove phosphate and ammonium from waste water. The high elimination rates and the possibility of recycling the struvite as a direct slow release fertilizer make this process feasible and appealing. However, the costs due to the raw chemicals needed are drawbacks that leave aside the application of the process in some facilities. The MAP biological dissolution makes possible a recycling of magnesium and phosphate, a fact that reduces the process‟s costs and will help making it even more feasible and environmentally friend. This thesis goes also through the parameters, reactions and different techniques that optimize the struvite precipitation process.

Place, publisher, year, edition, pages
2010. , 36 p.
Series
TRITA-LWR Degree Project, ISSN 1651-064X ; LWR-EX-10-22
Keyword [en]
phosphate removal; struvite precipitation; struvite biological dissolution; ammonium removal
National Category
Civil Engineering
Identifiers
URN: urn:nbn:se:kth:diva-31451OAI: oai:DiVA.org:kth-31451DiVA: diva2:503781
Subject / course
Water, Sewage and Waste
Uppsok
Technology
Supervisors
Examiners
Available from: 2012-02-16 Created: 2011-03-16 Last updated: 2012-02-16Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
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Language
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  • en-GB
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