Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Integrating dissolved and particulate matter into a prediction tool for ozonation of organic micropollutants in wastewater

Juárez, Rubén LU orcid ; Karlsson, Stina LU ; Falås, Per LU ; Davidsson, Åsa LU orcid ; Bester, Kai and Cimbritz, Michael LU (2021) In Science of the Total Environment 795.
Abstract

Ozonation is an established technique used to reduce the discharge of organic micropollutants into the aquatic environment, but the possibility of predicting the ozone demand for different wastewater matrices is still limited, especially in the presence of suspended solids (SS). A new tool for the prediction of the removal of organic micropollutants with ozone, based on dissolved and particulate matter in activated sludge effluents, was therefore developed. The removal of 25 organic micropollutants was determined on laboratory scale in the presence and absence of suspended solids. The linear trajectories of the dose–response curves enabled the determination of a new set of removal constants, based on dissolved chemical oxygen demand... (More)

Ozonation is an established technique used to reduce the discharge of organic micropollutants into the aquatic environment, but the possibility of predicting the ozone demand for different wastewater matrices is still limited, especially in the presence of suspended solids (SS). A new tool for the prediction of the removal of organic micropollutants with ozone, based on dissolved and particulate matter in activated sludge effluents, was therefore developed. The removal of 25 organic micropollutants was determined on laboratory scale in the presence and absence of suspended solids. The linear trajectories of the dose–response curves enabled the determination of a new set of removal constants, based on dissolved chemical oxygen demand (COD) and SS. The presence of SS had a more negative effect on the removal of slow-reacting micropollutants (removal constant <3.5 mg CODCr,diss·mg O3−1) with ozone than on the fast-reacting micropollutants (removal constant >3.5 mg CODCr,diss·mg O3−1). However, the decreased removal of the organic micropollutants was generally small, <10%, at typical SS concentrations, <25 mg SS·L−1. Integration of the new removal constants based on COD and SS enabled the removal in an ozone pilot plant to be modelled with an average deviation of <10% for several organic micropollutants. The use of the frequently measured parameters, COD and SS, as input parameters could facilitate the future use of the tool to predict the removal of micropollutants during ozonation.

(Less)
Please use this url to cite or link to this publication:
author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
COD, Ozonation, Pharmaceuticals, Suspended solids, Wastewater
in
Science of the Total Environment
volume
795
article number
148711
publisher
Elsevier
external identifiers
  • pmid:34243008
  • scopus:85109138210
ISSN
0048-9697
DOI
10.1016/j.scitotenv.2021.148711
language
English
LU publication?
yes
id
131d6e8f-8fc1-4e85-9ad1-9f2a5e270352
date added to LUP
2021-08-13 15:06:34
date last changed
2024-04-20 09:18:09
@article{131d6e8f-8fc1-4e85-9ad1-9f2a5e270352,
  abstract     = {{<p>Ozonation is an established technique used to reduce the discharge of organic micropollutants into the aquatic environment, but the possibility of predicting the ozone demand for different wastewater matrices is still limited, especially in the presence of suspended solids (SS). A new tool for the prediction of the removal of organic micropollutants with ozone, based on dissolved and particulate matter in activated sludge effluents, was therefore developed. The removal of 25 organic micropollutants was determined on laboratory scale in the presence and absence of suspended solids. The linear trajectories of the dose–response curves enabled the determination of a new set of removal constants, based on dissolved chemical oxygen demand (COD) and SS. The presence of SS had a more negative effect on the removal of slow-reacting micropollutants (removal constant &lt;3.5 mg COD<sub>Cr,diss</sub>·mg O<sub>3</sub><sup>−1</sup>) with ozone than on the fast-reacting micropollutants (removal constant &gt;3.5 mg COD<sub>Cr,diss</sub>·mg O<sub>3</sub><sup>−1</sup>). However, the decreased removal of the organic micropollutants was generally small, &lt;10%, at typical SS concentrations, &lt;25 mg SS·L<sup>−1</sup>. Integration of the new removal constants based on COD and SS enabled the removal in an ozone pilot plant to be modelled with an average deviation of &lt;10% for several organic micropollutants. The use of the frequently measured parameters, COD and SS, as input parameters could facilitate the future use of the tool to predict the removal of micropollutants during ozonation.</p>}},
  author       = {{Juárez, Rubén and Karlsson, Stina and Falås, Per and Davidsson, Åsa and Bester, Kai and Cimbritz, Michael}},
  issn         = {{0048-9697}},
  keywords     = {{COD; Ozonation; Pharmaceuticals; Suspended solids; Wastewater}},
  language     = {{eng}},
  month        = {{11}},
  publisher    = {{Elsevier}},
  series       = {{Science of the Total Environment}},
  title        = {{Integrating dissolved and particulate matter into a prediction tool for ozonation of organic micropollutants in wastewater}},
  url          = {{http://dx.doi.org/10.1016/j.scitotenv.2021.148711}},
  doi          = {{10.1016/j.scitotenv.2021.148711}},
  volume       = {{795}},
  year         = {{2021}},
}