---
_id: '10098'
abstract:
- lang: eng
text: "The German regulation for the protection of surface waters (OGewV) supplements
and substantiate the requirements regarding the implementation of the Water Framework
Directive (WFD) and contains detailed regulations regarding the classification,
presentation and monitoring of the ecological and the chemical status of surface
waters including thresholds for phosphorus. The quality of Germany’s water bodies
has greatly improved in recent decades. Despite the considerable advances that
have been made in the sewage treatment domain, point source pollution from certain
nutrients and pollutants remains unduly high and thus needs to be reduced. This
applies, for example, to phosphorus, as well as micro-pollutants (MPs) that in
many cases cannot be adequately eliminated at wastewater treatment plants. In
addition such inputs from combined sewer and rainwater (separate sewer) overflow
(CSO/SSO) are also still a problem in certain water bodies. \r\nSub-surface vertical
flow constructed wetlands (SSVF) have been used since the late 1990s for CSO/SSO
because of its high mechanical and biological efficiency. To achieve in particular
a stable and long-term phosphorus reduction iron-containing substances are blended
so far to large-scale SSVF as additives during the construction. However, some
disadvantages in this type of substrate improvement must be stated. High and thereby
costly material and installation costs are required and a subsequent melioration
of a SSVF under continuous operation is impossible. The only possibility exists
in the cost-intensive replacement of the entire soil body including replanting.
All disadvantages can be avoided if instead of a substrate melioration a separate
sorption stage, which is filled exclusively with iron-containing additives, is
connected downstream of the SSVF. The material consumption is limited only to
this sorption stage. This paper gives the results of an appropriate 3 year large-scale
investigation including reduction rates and operational data concerning the standard
parameters with the main focus on phosphorus as well as selected MPs and selected
heavy metals as four of the six heavy metals investigated are classified as priority
or even priority hazardous substances. \r\nThe sorption stage consisted of two
reactors, operated in series. The first reactor was filled with FerroSorp® (granular
iron hydroxide), the second reactor with GAC. The P-removal of SSVF and sorption
stage is in a load-related magnitude of 94% (oPO4-P), resulting in concentrations
mainly less than 0.1 mg oPO4-P/L. Considering the FerroSorp® load capacity of
40% after two years of operation it can be estimated that a separated sorption
stage might achieve a minimum lifetime of 4 years. Current German standards for
meliorated SSVF generally recommend an amount of filter substrate of 10% by mass
to achieve P-removal rates of 80% for two years of lifetime. This lifetime is
half as long as with the investigated downstream sorption process and this with
the thirtyfold increased use of iron-containing additive. Commenting the MP elimination,
a substantial MP-loading of the CSO as well as a substantial MP-removal in the
SSVF can be stated. Ten out of eleven MPs are reduced by the SSVF between 20%
up to 80% (Metoprolol). The final downstream GAC sorption reactor eliminated all
MPs almost completely as expected. The analyzed heavy metals cadmium (Cd), copper
(Cu), nickel (Ni), lead (Pb) and zinc (Zn) are retained in the entire three-stage
plant (SSVF, two sorption reactors) with high efficiencies between 80% and 97%.
Mercury (Hg) was analyzed only at very low concentration level. "
author:
- first_name: Wernfried
full_name: Schier, Wernfried
last_name: Schier
- first_name: Ursula
full_name: Telgmann, Ursula
last_name: Telgmann
- first_name: Jörg
full_name: Felmeden, Jörg
id: '81335'
last_name: Felmeden
citation:
ama: Schier W, Telgmann U, Felmeden J. Intensified Constructed Wetlands for CSO/SSO
Treatment to Achieve Immission-Oriented Thresholds for Phosphorus, Micro Pollutants
and Priority Substances According to WFD. (Arias CA, Peñacoba-Antona L, Brix
H, eds.). Aarhus University; 2019.
apa: "Schier, W., Telgmann, U., & Felmeden, J. (2019). Intensified Constructed
Wetlands for CSO/SSO Treatment to Achieve Immission-Oriented Thresholds for Phosphorus,
Micro Pollutants and Priority Substances According to WFD. In C. A. Arias, L.
Peñacoba-Antona, & H. Brix (Eds.), \t8th International Symposium on Wetland
Pollutant Dynamics and Control: 17 - 21 June, 2019, Aarhus University, Denmark.
Aarhus University."
bjps: 'Schier W, Telgmann U and Felmeden J (2019) Intensified Constructed
Wetlands for CSO/SSO Treatment to Achieve Immission-Oriented Thresholds for Phosphorus,
Micro Pollutants and Priority Substances According to WFD, Arias CA, Peñacoba-Antona
L and Brix H (eds). Aarhus, Denmark: Aarhus University.'
chicago: "Schier, Wernfried, Ursula Telgmann, and Jörg Felmeden. Intensified
Constructed Wetlands for CSO/SSO Treatment to Achieve Immission-Oriented Thresholds
for Phosphorus, Micro Pollutants and Priority Substances According to WFD.
Edited by Carlos A. Arias, Lorena Peñacoba-Antona, and Hans Brix. \t8th
International Symposium on Wetland Pollutant Dynamics and Control: 17 - 21 June,
2019, Aarhus University, Denmark. Aarhus, Denmark: Aarhus University, 2019."
chicago-de: "Schier, Wernfried, Ursula Telgmann und Jörg Felmeden. 2019. Intensified
Constructed Wetlands for CSO/SSO Treatment to Achieve Immission-Oriented Thresholds
for Phosphorus, Micro Pollutants and Priority Substances According to WFD.
Hg. von Carlos A. Arias, Lorena Peñacoba-Antona, und Hans Brix. \t8th International
Symposium on Wetland Pollutant Dynamics and Control: 17 - 21 June, 2019, Aarhus
University, Denmark. Aarhus, Denmark: Aarhus University."
din1505-2-1: 'Schier, Wernfried ;
Telgmann, Ursula ; Felmeden,
Jörg ; Arias, C. A. ; Peñacoba-Antona, L. ; Brix,
H. (Hrsg.): Intensified Constructed Wetlands for CSO/SSO Treatment to
Achieve Immission-Oriented Thresholds for Phosphorus, Micro Pollutants and Priority
Substances According to WFD. Aarhus, Denmark : Aarhus University, 2019'
havard: W. Schier, U. Telgmann, J. Felmeden, Intensified Constructed Wetlands for
CSO/SSO Treatment to Achieve Immission-Oriented Thresholds for Phosphorus, Micro
Pollutants and Priority Substances According to WFD, Aarhus University, Aarhus,
Denmark, 2019.
ieee: 'W. Schier, U. Telgmann, and J. Felmeden, Intensified Constructed Wetlands
for CSO/SSO Treatment to Achieve Immission-Oriented Thresholds for Phosphorus,
Micro Pollutants and Priority Substances According to WFD. Aarhus, Denmark:
Aarhus University, 2019.'
mla: "Schier, Wernfried, et al. “Intensified Constructed Wetlands for CSO/SSO Treatment
to Achieve Immission-Oriented Thresholds for Phosphorus, Micro Pollutants and
Priority Substances According to WFD.” \t8th International Symposium on Wetland
Pollutant Dynamics and Control: 17 - 21 June, 2019, Aarhus University, Denmark,
edited by Carlos A. Arias et al., Aarhus University, 2019."
short: W. Schier, U. Telgmann, J. Felmeden, Intensified Constructed Wetlands for
CSO/SSO Treatment to Achieve Immission-Oriented Thresholds for Phosphorus, Micro
Pollutants and Priority Substances According to WFD, Aarhus University, Aarhus,
Denmark, 2019.
ufg: 'Schier, Wernfried/Telgmann, Ursula/Felmeden, Jörg: Intensified Constructed
Wetlands for CSO/SSO Treatment to Achieve Immission-Oriented Thresholds for Phosphorus,
Micro Pollutants and Priority Substances According to WFD, hg. von Arias, Carlos
A./Peñacoba-Antona, Lorena/Brix, Hans, Aarhus, Denmark 2019.'
van: "Schier W, Telgmann U, Felmeden J. Intensified Constructed Wetlands for CSO/SSO
Treatment to Achieve Immission-Oriented Thresholds for Phosphorus, Micro Pollutants
and Priority Substances According to WFD. Arias CA, Peñacoba-Antona L, Brix H,
editors. \t8th International Symposium on Wetland Pollutant Dynamics and Control:
17 - 21 June, 2019, Aarhus University, Denmark. Aarhus, Denmark: Aarhus University;
2019."
conference:
end_date: 2019-06-21
location: ' Aarhus, Denmark'
name: 8th International Symposium on Wetland Pollutant Dynamics and Control
start_date: 2019-06-17
date_created: 2023-06-30T10:47:38Z
date_updated: 2023-07-06T14:53:43Z
department:
- _id: DEP3021
editor:
- first_name: 'Carlos A. '
full_name: 'Arias, Carlos A. '
last_name: Arias
- first_name: 'Lorena '
full_name: 'Peñacoba-Antona, Lorena '
last_name: Peñacoba-Antona
- first_name: 'Hans '
full_name: 'Brix, Hans '
last_name: Brix
extern: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
place: ' Aarhus, Denmark'
publication: "\t8th International Symposium on Wetland Pollutant Dynamics and Control:
17 - 21 June, 2019, Aarhus University, Denmark"
publication_identifier:
isbn:
- 978-87-971486-0-0
unknown:
- 978-87-971486-1-7
publication_status: published
publisher: Aarhus University
related_material:
link:
- relation: confirmation
url: http://wetpol.com/wp-content/uploads/2019/06/Book_of_Abstracts_WETPOL2019.pdf
status: public
title: Intensified Constructed Wetlands for CSO/SSO Treatment to Achieve Immission-Oriented
Thresholds for Phosphorus, Micro Pollutants and Priority Substances According to
WFD
type: conference_editor_article
user_id: '83781'
year: '2019'
...