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Promotion of nitrifiers through side-stream bioaugmentation : A full-scale study

Stenström, F. LU and La Cour Jansen, J. LU (2016) In Water Science and Technology 74(7). p.1736-1743
Abstract

Bioaugmentation of nitrifiers from a side-stream treatment is an efficient method for boosting the mainstream process at a wastewater treatment plant (WWTP). Although this technology has been known for several years, the number of full-scale applications for it is limited. For a WWTP approaching its critical nitrogen load capacity, the benefits are doubled if the introduced side-stream treatment for digester supernatant is combined with bioaugmentation. Not only is the nitrogen load to the mainstream process decreased by 10-25%, but the mainstream process is also boosted with nitrifiers, increasing the nitrifying capacity. In this full-scale study, the increment of the nitrification rate is examined in the mainstream process at... (More)

Bioaugmentation of nitrifiers from a side-stream treatment is an efficient method for boosting the mainstream process at a wastewater treatment plant (WWTP). Although this technology has been known for several years, the number of full-scale applications for it is limited. For a WWTP approaching its critical nitrogen load capacity, the benefits are doubled if the introduced side-stream treatment for digester supernatant is combined with bioaugmentation. Not only is the nitrogen load to the mainstream process decreased by 10-25%, but the mainstream process is also boosted with nitrifiers, increasing the nitrifying capacity. In this full-scale study, the increment of the nitrification rate is examined in the mainstream process at different temperatures and at different flow rates of returned activated sludge to the side-stream treatment. Our results show that the nitrification rate in the mainstream process was increased by 41% during the coldest period of the study, implying that the examined WWTP could treat considerably higher nitrogen loads if bioaugmentation were permanently installed.

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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Bioaugmentation, Biological wastewater treatment, Digester supernatant, Inoculation, Sequencing batch reactor
in
Water Science and Technology
volume
74
issue
7
pages
8 pages
publisher
IWA Publishing
external identifiers
  • pmid:27763354
  • wos:000386941900024
  • scopus:84992084141
ISSN
0273-1223
DOI
10.2166/wst.2016.340
language
English
LU publication?
yes
id
d62ddd84-4e37-4965-bba2-81faf5ec1584
date added to LUP
2016-11-16 12:15:23
date last changed
2024-01-04 16:29:36
@article{d62ddd84-4e37-4965-bba2-81faf5ec1584,
  abstract     = {{<p>Bioaugmentation of nitrifiers from a side-stream treatment is an efficient method for boosting the mainstream process at a wastewater treatment plant (WWTP). Although this technology has been known for several years, the number of full-scale applications for it is limited. For a WWTP approaching its critical nitrogen load capacity, the benefits are doubled if the introduced side-stream treatment for digester supernatant is combined with bioaugmentation. Not only is the nitrogen load to the mainstream process decreased by 10-25%, but the mainstream process is also boosted with nitrifiers, increasing the nitrifying capacity. In this full-scale study, the increment of the nitrification rate is examined in the mainstream process at different temperatures and at different flow rates of returned activated sludge to the side-stream treatment. Our results show that the nitrification rate in the mainstream process was increased by 41% during the coldest period of the study, implying that the examined WWTP could treat considerably higher nitrogen loads if bioaugmentation were permanently installed.</p>}},
  author       = {{Stenström, F. and La Cour Jansen, J.}},
  issn         = {{0273-1223}},
  keywords     = {{Bioaugmentation; Biological wastewater treatment; Digester supernatant; Inoculation; Sequencing batch reactor}},
  language     = {{eng}},
  month        = {{10}},
  number       = {{7}},
  pages        = {{1736--1743}},
  publisher    = {{IWA Publishing}},
  series       = {{Water Science and Technology}},
  title        = {{Promotion of nitrifiers through side-stream bioaugmentation : A full-scale study}},
  url          = {{http://dx.doi.org/10.2166/wst.2016.340}},
  doi          = {{10.2166/wst.2016.340}},
  volume       = {{74}},
  year         = {{2016}},
}