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Micropollutant removal by attached and suspended growth in a hybrid biofilm-activated sludge process.

Falås, Per LU ; Longrée, P ; la Cour Jansen, Jes LU ; Siegrist, H ; Hollender, J and Joss, A (2013) In Water Research 47(13). p.4498-4506
Abstract
Removal of organic micropollutants in a hybrid biofilm-activated sludge process was investigated through batch experiments, modeling, and full-scale measurements. Batch experiments with carriers and activated sludge from the same full-scale reactor were performed to assess the micropollutant removal rates of the carrier biofilm under oxic conditions and the sludge under oxic and anoxic conditions. Clear differences in the micropollutant removal kinetics of the attached and suspended growth were demonstrated, often with considerably higher removal rates for the biofilm compared to the sludge. For several micropollutants, the removal rates were also affected by the redox conditions, i.e. oxic and anoxic. Removal rates obtained from the batch... (More)
Removal of organic micropollutants in a hybrid biofilm-activated sludge process was investigated through batch experiments, modeling, and full-scale measurements. Batch experiments with carriers and activated sludge from the same full-scale reactor were performed to assess the micropollutant removal rates of the carrier biofilm under oxic conditions and the sludge under oxic and anoxic conditions. Clear differences in the micropollutant removal kinetics of the attached and suspended growth were demonstrated, often with considerably higher removal rates for the biofilm compared to the sludge. For several micropollutants, the removal rates were also affected by the redox conditions, i.e. oxic and anoxic. Removal rates obtained from the batch experiments were used to model the micropollutant removal in the full-scale process. The results from the model and plant measurements showed that the removal efficiency of the process can be predicted with acceptable accuracy (±25%) for most of the modeled micropollutants. Furthermore, the model estimations indicate that the attached growth in hybrid biofilm-activated sludge processes can contribute significantly to the removal of individual compounds, such as diclofenac. (Less)
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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Water Research
volume
47
issue
13
pages
4498 - 4506
publisher
Elsevier
external identifiers
  • wos:000323240100029
  • pmid:23764599
  • scopus:84879017224
ISSN
1879-2448
DOI
10.1016/j.watres.2013.05.010
language
English
LU publication?
yes
id
b08f773b-cdd5-46dc-887f-2b7adab689fe (old id 3913407)
date added to LUP
2016-04-01 10:13:22
date last changed
2020-09-23 01:31:20
@article{b08f773b-cdd5-46dc-887f-2b7adab689fe,
  abstract     = {Removal of organic micropollutants in a hybrid biofilm-activated sludge process was investigated through batch experiments, modeling, and full-scale measurements. Batch experiments with carriers and activated sludge from the same full-scale reactor were performed to assess the micropollutant removal rates of the carrier biofilm under oxic conditions and the sludge under oxic and anoxic conditions. Clear differences in the micropollutant removal kinetics of the attached and suspended growth were demonstrated, often with considerably higher removal rates for the biofilm compared to the sludge. For several micropollutants, the removal rates were also affected by the redox conditions, i.e. oxic and anoxic. Removal rates obtained from the batch experiments were used to model the micropollutant removal in the full-scale process. The results from the model and plant measurements showed that the removal efficiency of the process can be predicted with acceptable accuracy (±25%) for most of the modeled micropollutants. Furthermore, the model estimations indicate that the attached growth in hybrid biofilm-activated sludge processes can contribute significantly to the removal of individual compounds, such as diclofenac.},
  author       = {Falås, Per and Longrée, P and la Cour Jansen, Jes and Siegrist, H and Hollender, J and Joss, A},
  issn         = {1879-2448},
  language     = {eng},
  number       = {13},
  pages        = {4498--4506},
  publisher    = {Elsevier},
  series       = {Water Research},
  title        = {Micropollutant removal by attached and suspended growth in a hybrid biofilm-activated sludge process.},
  url          = {http://dx.doi.org/10.1016/j.watres.2013.05.010},
  doi          = {10.1016/j.watres.2013.05.010},
  volume       = {47},
  year         = {2013},
}