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Evaluation of the microalgae-based activated sludge (MAAS) process for municipal wastewater treatment on pilot scale
Mälardalen University, School of Business, Society and Engineering, Future Energy Center.ORCID iD: 0000-0002-5014-3275
Mälardalen University, School of Business, Society and Engineering, Future Energy Center.ORCID iD: 0000-0002-0137-2194
Mälardalen University, School of Business, Society and Engineering, Future Energy Center.ORCID iD: 0000-0002-4435-4367
Mälardalen University, School of Business, Society and Engineering, Future Energy Center. ABB AB Corporate Research, Västerås, Sweden.ORCID iD: 0000-0003-0274-4719
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2016 (English)Conference paper, (Refereed)
Abstract [en]

The microalgae-based activated sludge (MAAS) process was evaluated regarding the removal efficiency of organic matter and nitrogen from physiochemically pretreated municipal wastewater at different hydraulic retention time (HRT) on pilot scale. Additionally, the interplay between the algal and bacterial consortium was evaluated regarding the ability of the algal consortium to provide oxygen for bacterial oxidation processes. The results showed in general high organic matter (COD removal 75-90%) and total nitrogen (40-50%) removal at all HRTs (6, 4 and 2 days). The dissolved oxygen (DO) concentration was maintained stable at 6 days (6.04±0.47 mg L-1) and 4 days (4.24±0.62 mg L-1) HRT. However, the DO significantly declined at 2 days HRT due to loss of biomass at the high influent flow in the sedimentation unit. Nevertheless, the MAAS process functioned as a symbiotic algal-bacterial system with bacterial organic matter oxidation and nitrification and algal nutrient removal.

Place, publisher, year, edition, pages
2016.
National Category
Water Treatment
Identifiers
URN: urn:nbn:se:mdh:diva-34538OAI: oai:DiVA.org:mdh-34538DiVA: diva2:1059419
Conference
IWA World Water Congress
Available from: 2016-12-22 Created: 2016-12-22 Last updated: 2017-02-02Bibliographically approved

Open Access in DiVA

fulltext(242 kB)12 downloads
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File name FULLTEXT01.pdfFile size 242 kBChecksum SHA-512
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Type fulltextMimetype application/pdf

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Schwede, SebastianAnbalagan, AnbarasanKrustok, IvoLindberg, Carl-FredrikNehrenheim, Emma
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Future Energy Center
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CiteExportLink to record
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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
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  • sv-SE
  • Other locale
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Output format
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  • asciidoc
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