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Ammoniumremoval by partial nitritation and Anammox processes from wastewater with increased salinity
KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering.
KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering.
KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Land and Water Resources Engineering.
(English)Manuscript (preprint) (Other academic)
National Category
Other Environmental Engineering
Identifiers
URN: urn:nbn:se:kth:diva-141679OAI: oai:DiVA.org:kth-141679DiVA: diva2:697845
Note

QS 2014

Available from: 2014-02-19 Created: 2014-02-19 Last updated: 2014-02-19Bibliographically approved
In thesis
1. Ammonium removal from municipal wastewater with application of ion exchange and partial nitritation/Anammox process
Open this publication in new window or tab >>Ammonium removal from municipal wastewater with application of ion exchange and partial nitritation/Anammox process
2014 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Nitrogen removal from municipal wastewater with application of Anammox process offers cost reduction, especially if it is combined with maximal use of organic content of wastewater for biogas production. In this study a new technology is proposed, which is based on ammonium concentration from municipal wastewater by ion exchange followed by biological removal of ammonium from the concentrated stream by partial nitritation/Anammox process. In experiments on ammonium concentration four the most common ion exchange materials were tested in packed bed columns, namely strong and weak acid cation exchange resins, natural and synthetic zeolites. Experiments with synthetic wastewaters with different content and municipal wastewater showed that strong acid cation resin is the most suitable for ammonium concentration from municipal wastewater due to its high exchange capacity and fast regeneration. Since NaCl was used for regeneration of ion exchange materials, spent regenerant had elevated salinity. Experiments with activity determination showed that both nitritation and Anammox bacteria are inhibited by NaCl, where effect on Anammox bacteria is more severe. Adaptation of partial nitritation/Anammox biomass was studied using two strategies of salinity increase and it was possible to adapt the biomass to NaCl content of 10-15 g/L. The technology was tested in batch mode using strong acid cation resin for ammonium concentration from pretreated municipal wastewater, and partial nitritation/Anammox biomass for nitrogen removal from concentrated stream. It was shown that it is possible to remove 99.9% of ammonium from wastewater with ion exchange while increasing concentration of ammonium in spent regenerant by 18 times. Up to 95% of nitrogen from spent regenerant was removed by partial nitritation/Anammox biomass in batch tests. Moreover, possibilities of integrati on of the technology into municipal wastewater treatment technology, challenges and advantages were discussed.

 

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2014. x, 30 p.
Series
TRITA-LWR. LIC, ISSN 1650-8629 ; 2014:01
Keyword
wastewater; nitrogen removal; ion exchange; nitritation; Anammox
National Category
Other Environmental Engineering
Identifiers
urn:nbn:se:kth:diva-141487 (URN)978-91-7595-010-5 (ISBN)
Presentation
2014-03-04, V3, Teknikringen 76, KTH, Stockholm, 13:15 (English)
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Supervisors
Note

QC 20140219

Available from: 2014-02-19 Created: 2014-02-17 Last updated: 2016-11-25Bibliographically approved

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  • apa
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