KomS

Research

Competence Center for Trace Compounds BW

The Competence Centre Trace Substances Baden-Württemberg is dedicated to the development and transfer of knowledge on the subject of trace substances and their elimination from wastewater

Research Areas

The KomS sees itself as a platform for the exchange of information and experience in process engineering implementation. The KomS is a cooperation between the University of Stuttgart, the Biberach University of Applied Sciences and the DWA-Landesverband Baden-Württemberg and is funded by the Ministry of the Environment, Climate and Energy of the State of Baden-Württemberg.

Map of Feasibility Studies BW

Feasibility Studies BW

Map of Feasibility Studies BW

Analysis of feasibility studies and development of planning tools

From 2015 until the present around 30 feasibility studies were carried out. Currently, more than 10 additional studies are in progress. One can safely assume that in the coming years many more studies will be done. Because of the difference in the extent and resolution of the already available feasibility studies, some criteria for further studies were developed. Our Project partner are: Karlsruher Institut für Technologie (KIT), Weber Ingenieure GmbH and ifak - Institut für Automation und Kommunikation e. V..

The first Analysis were presented at the DWA state association conference on 16.10.2019 in Pforzheim.

Click here for the overview map of the KomS feasibility study.

Detailed project description: Analysis of feasibility studies and development of planning tools (pdf)

Financing Institution: Ministry of Environment, Climate Protection and the Energy Sector Baden-Württemberg
Project partner: Karlsruher Institut für Technologie (KIT),
Institut für Wasser und Gewässerentwicklung, Bereich Siedlungswasserwirtschaft und Wassergütewirtschaft
Weber Ingenieure GmbH
ifak - Institut für Automation und Kommunikation e. V.
Contact:

Dr.-Ing. Marie Launay;
Dr.-Ing. Eva Fenrich

Duration: 05/2019 - 10/2020

Investigations at wastewater treatment plants into extensive P-removal and simultaneous elimination of micropollutants

This project aims to evaluate the process technologies for micropollutants elimination that are currently considered
to be feasible by experts, regarding their potential for the extensive P-removal. Especially, the processes used so far
in Baden-Württemberg should be examined in detail.

Detailed project description: Investigations at wastewater treatment plants into extensive P-removal and simultaneous elimination of micropollutants (pdf/34kb)

Financing Institution: Ministerium für Umwelt, Klima und Energiewirtschaft Baden-Württemberg
Project partner: Hochschule Biberach
Contact:

Dr.-Ing. Marie Launay;
Lilia Acosta, M. Sc.

Duration: 09/2019 - 06/2020

Comparative investigation of three continuous fi lters fi lled with different granular activated carbons

Im Zuge dieses Projekts soll die Spurenstoffentnahme des GAK-Filters für zwei weitere Jahre untersucht werden.
Aufgrund der sehr guten Resultate sollen die Untersuchungen erweitert und die anderen beiden Sandfilter zu
GAK-Filtern umgerüstet werden.

Detailed project description: Comparative investigation of three continuous fi lters fi lled with different granular activated carbons (pdf/34kb)

Financing Institution: Regierungspräsidium Freiburg
Project partner: Gemeinde Emmingen-Liptingen
Jedele und Partner GmbH (JuP)
Contact

Dr.-Ing. Marie Launay

Duration: 04/2019 - 04/2020
Versuchsfilter Stuttgart
Versuchsfilter Stuttgart

Investigations on the operational optimization of the direct dosage of powdered activated carbon on a sand filter at the main WWTP Mühlhausen of the city of Stuttgart

In previous investigations, it has been found that the process of direct dosage of powdered activated carbon onto a filter represents a possible option for the application of powdered activated carbon in HKW. For a successful implementation of the process in the HKW Mühlhausen, it is important to optimize the use of powdered activated carbon in the direct dosage process to reduce the use of resources. Moreover, it is important to gain experience in terms of operational reliability of activated carbon retention and filter runtime.

Detailed project description: Untersuchungen zur Betriebsoptimierung der Direktdosierung von Pulveraktivkohle auf einen Sandfilter auf dem Hauptklärwerk Mühlhausen der Stadt Stuttgart (pdf/151kb)

Financing Institution: Stadtentwässerung Stuttgart
Contact:

Dr.-Ing. Marie Launay;
Dipl.-Ing. Sophie Zawadski
Dipl.-Ing. Bettina Krucker

Duration: 04/2017 - 03/2020
Wastewater treatment plant Eriskirch
Wastewater treatment plant Eriskirch
Ozone Laboratory Plant
Ozone Laboratory Plant

Assessment of Micropollutants and Pathogens Before and After the Implementation of Ozone Treatment at the Eriskirch Wastewater Treatment Plant

The intended analysis program should be able to answer the following questions:

  • How is the micropollutants removal of the watsewater treatment plant before and after implementation of the
    industrial-scale ozonation plant?
  • How is the micropollutants removal in the industrial-scale wastewater treatment plant depending on the
    ozone dose in gO3 / gDOC?
  • How is the decrease in the total number of bacteria in the effluent of the sewage treatment plant before and
    after the implementation of the industrial-scale ozonation?
  • What are the effects of the industrial-scale ozonation plant and the following sand filter on antibiotic-resistant
    bacteria (ARB)?

detailed project description: Assessment of Micropollutants and Pathogens Before and After the Implementation of Ozone Treatment at the Eriskirch Wastewater Treatment Plant

Financing Institution:
Ministry of Environment, Climate Protection and the Energy Sector
Baden-Württemberg
Contact:
Dr.-Ing. Marie Launay
Project partner:
Teaching and research laboratory at the University of Stuttgart
Biological exhaust air purifi cation (ISWA)
Wastewater association of Unteres Schussental
Jedele and Partner GmbH
Duration:
05/2019 – 10/2020

Development of an investigation concept for the verification of micropollutant elimination from wastewater with ozone and activated carbon

Part of the project is to design a laboratory facility and a semi-technical pilot plant for doing preliminary investigations on further wastewater treatment with ozone for micropollutant removal. Furthermore, a methodology for a combined process with ozone and activated carbon will be developed. The investigations will be done with the  Treatment Plant for Education and Research (LFKW) of the university of Stuttgart. To check the transferability of the results, the tests will be repeated with the wastewater of the wastewater treatment plant Donaueschingen.

Detailed project description: Entwicklung einer Untersuchungskonzeption zur Überprüfung der Spurenstoffelimination aus Abwässern mit Ozon und Aktivkohle (pdf/132kb)

Financing Institution: Ministerium für Umwelt, Klima und Energiewirtschaft Baden-Württemberg
Contact:

Dr.-Ing. Marie Launay;
Johanna Neef, M.Sc.Amir Riyahi, M.Sc.

Duration: 07/2018 - 09/2020
Flow chart for the investigations
Flow chart for the investigations
Piping
Piping
GAC filter in operation
GAC filter in operation
Experiment stand with fi lter columns on a laboratory scale
Experiment stand with fi lter columns on a laboratory scale

Study at the wastewater treatment plant Mannheim into the elimination of organic micropollutants under wet weather conditions: Investigations using granular activated carbon on an industrial scale

After successful laboratory and pilot-scale tests, industrialscale tests have been taking place in three converted filter
cells of the fi lter plant since October 2018.

detailed project description: Study at the wastewater treatment plant Mannheim into the elimination of organic micropollutants under wet weather conditions: Investigations using granular activated carbon on an industrial scale (pdf/224kb)

Financial Institution: Owner-operated Urban drainage Mannheim
Contact:

Dr.-Ing. Marie Launay;
Johanna Neef, M.Sc.

Duration: 07/2018 - 04/2019

Study on micropollutant elimination in the WWT Mannheim for rainy weather conditions: Investigations using granulated activated carbon on an industrial scale

After successful laboratory and semi-technical investigations, investigations in industrial scale should be done with granulated activated carbon filters for treating the whole wastewater of the WWT adsorptiv in rainy weather conditions. The investigations will be done with three adapted filter cells of the filter unit, which are not used at the moment. Accompanying to the industrial scale investigations the trials with the semi-technical pilot plant will continue. Currently, investigations are being carried out with two different granulated activated carbons.

Detailed project description: Studie zur Spurenstoffelimination im Klärwerk Mannheim bei Regenwetterbedingungen: Untersuchungen mittels granulierter Aktivkohle im Labormaßstab sowie im halbtechnischen Maßstab [DE] (pdf/215kb)

Financing Institution: Stadtentwässerung Mannheim
Contact:

Dr.-Ing. Marie Launay;
Johanna Neef, M.Sc.

Duration: 02/2017 - 06/2018

Completed Research Projects

By defining a uniform procedure with regard to sampling and sample preparation as well as the parameter set to be investigated, the improvement of the purification performance was to be demonstrated for the first time on a larger scale for the WWTPs located in Baden-Württemberg with a procedure for the targeted elimination of micropollutants. For this purpose, investigations have been carried out on WWTPs in the years 2014–2016 before their extension. Until the end of 2018, the investigations to assess the state after upgrading will run.

Detailed project description: Vergleichsmessungen zur Spurenstoffelimination beim Ausbau von Kläranlagen um eine 4. Reinigungsstufe [DE] (pdf/198kb)

Financing Institution: Ministerium für Umwelt, Klima und Energiewirtschaft Baden-Württemberg
Contact:

Dr.-Ing. Marie Launay;
Dipl.-Ing. (FH) Annette Rößler

Duration: 05/2014 - 12/2018

For this project, a two-lane pilot plant with ozonation and  granular activated carbon filters (GAC-Filters) continuously operated was built up and operated in Biberach at the pharmaceutical company Boehringer Ingelheim Pharma GmbH & Co. KG together with the project partners Jedele and Partner GmbH and the Micropollutants Competence Centre Baden-Württemberg (KomS). The aim is to compare the combination of the two methods , ozonation and continuously operated GAC-Filter, regarding the extent of micropollutants removal with the continuously operated GAC-Filter.

Detailed project description: Untersuchungsvorhaben zur Spurenstoffentnahme mit Ozon und granulierter Aktivkohle [DE] (pdf/58kb)

Financing Institution: Ministerium für Umwelt, Klima und Energiewirtschaft Baden-Württemberg
Contact:

Dr.-Ing. Marie Launay;
Dr.-Ing. Christian Locher

Project partner: Boehringer Ingelheim Pharma GmbH & Co. KG; Jedele und Partner GmbH
Duration: 01/2016 - 11/2017
Evaluated wastewater treatment plants sites
Evaluated wastewater treatment plants sites

Micropollutants Competence Centre BW (KomS) was commissioned by the Ministry of Environment, Climate Protection and the Energy Sector Baden‑Württemberg with the implementation of a nationwide measurement campaign to determine the micropollutants situation in wastewater treatment plants in order to summarize the existing data in Baden-Württemberg regarding the load of different micropollutans. The inflow and outflow of 40 wastewater treatment plants of different sizes (see Figure 1) are evaluated for the presence of 50 individual substances. The substance selection included, among others, the individual substances specified in the Substance-List A of the KomS-Recommendations for actions and substances listed on the current observation list of the European Commission ("EU-Watch list").

Detailed project description: Bestandsaufnahme der Spurenstoffsituation von Kläranlagen in Baden-Württemberg [DE] (pdf/211kb)

Financing Institution: Ministerium für Umwelt, Klima und Energiewirtschaft Baden-Württemberg
Contact:

Dr.-Ing. Marie Launay;
Dipl.-Ing. Walter Rau;
Dr.-Ing. Steffen Metzger

Duration: 02/2015 - 12/2016
Wastewater treatment plant Emmingen
Wastewater treatment plant Emmingen

At the wastewater treatment plant Emmingen, which has a capacity of 7,500 PE, the simultaneous use of powdered activated carbon is being investigated for the first time in Baden-Württemberg. The plans envisage to dose powdered activated carbon over a period of about half a year directly into the aeration tank of the wastewater treatment plant (see Figure 1). The aim of the investigation is to determine the operational and economic impact of powder activated carbon addition in the activation tank of a small wastewater treatment plant.

Detailed project description: Simultane Anwendung von Pulveraktivkohle für die Elimination von Spurenstoffen auf der Kläranlage Emmingen [DE] (pdf/173kb)

 

Financing Institution: Regierungspräsidium Freiburg
Contact:

Dr.-Ing. Marie Launay;
Dr.-Ing. Christian Locher

Project partner: Gemeinde Emmingen-Liptingen; Jedele und Partner GmbH
Duration: 05/2015 - 06/2016

Through biological impact tests is possible to consider the effect of all substances as "sum effect". The aim of the project is therefore to demonstrate the improvement of wastewater quality by the additional treatment of biologically treated wastewater with activated carbon based on such tests with different endpoints regarding toxic and hormonal effect using the example of the wastewater treatment plant in Mannheim. In addition, it should be verify whether the test methods used are sensitive enough to detect the performance of further wastewater treatment. This would allow these test systems to be used in the future to verify the performance of using activated carbon at other wastewater treatment plants sites.

Detailed project description: Erfolgskontrolle der adsorptiven Abwasserreinigung mittels biologischer Wirktests [DE] (pdf/133kb)

Financing Institution: Ministerium für Umwelt, Klima und Energiewirtschaft Baden-Württemberg
Contact:

Dr.-Ing. Marie Launay;
Johanna Neef, M.Sc.;
Dr.-Ing. Steffen Metzger

Project partner:

Zweckverband Landeswasserversorgung; Universität Tübingen; Stadtentwässerung Mannheim

Duration: 01/2015 - 11/2015

In order to reduce the input of micropollutants into water bodies, a stage for the micropollutants elimination will be implemented in about 100 of the more than 700 wastewater treatment plants in Switzerland in the next 20 years. The wastewater treatment plant Schönau of the Water Protection Association of the Lake Zug-Küssnacht-Ägeri (GVRZ) falls under these 100 facilities. Since the simultaneous dosing of powdered activated carbon in the wastewater treatment plant Schönau represents a possible process option for the elimination of micropollutants, experiences with this technique should first be gained before a possible implementation in large-scale operations. For this purpose a semi-industrial pilot plant was provided by the Micropollutants Competence Center Baden-Württemberg (KomS).

Detailed project description: Untersuchungen zur Spurenstoffelimination mittels simultaner Pulveraktivkohledosierung auf der ARA Schönau [DE] (pdf/180kb)

Financing Institution: Gewässerschutzverband der Region Zugersee-Küssnachtersee Ägerisee
Contact:

Dr.-Ing. Marie Launay;
Dr.-Ing. Steffen Metzger;
Dipl.-Ing. (FH) Annette Rößler

Duration: 08/2014 - 04/2015

Powdered activated carbon is used at several wastewater treatment plants in Baden-Württember in municipal wastewater treatment focused in micropollutants removal.  The removal of the activated carbon from the cleaning process takes place with the excess sludge. Depending on the type of sludge treatment, the activated carbon gets into the digester. In this case, the question arises whether and to what extent the anaerobic treatment of the sludge in a digester leads to the desorption of accumulated micropollutants. Since so far there is no knowledge about a possible release of adsorpted micropollutants bounded to activated carbon under anaerobic conditions, investigations on a pilot-scale will be carried out in the wastewater treatment plant in Mannheim, which operates since 2010 an adsorption stage in the partial flow (Qmax = 300 L / s).

Detailed project description: Untersuchungen zum Spurenstoffbindungsverhalten von Pulveraktivkohle unter anaeroben Bedingungen [DE] (pdf/165kb)

Financing Institution: Ministerium für Umwelt, Klima und Energiewirtschaft Baden-Württemberg
Contact:

Dr.-Ing. Marie Launay;
Dr.-Ing. Steffen Metzger;
M. Eng. Jochen Meckes

Project partner: Stadtentwässerung Mannheim; AWEL Amt für Abfall, Wasser, Energie und Luft, Kanton Zürich
Duration: 08/2013 - 02/2014

Regarding the monitoring of wastewater treatment plants focused in micropollutants elimination, there is no guiding parameter at national or international level at which the extent micropollutants elimination can be measured. However, investigations of micropollutants elimination carried out over several years in the wastewater treatment plant in Mannheim leaded to a compilation of indicator substances, which can be used to verify the effectiveness of an adsorptive purification process concerning its micropollutants elimination. Nevertheless, it is also not possible to specify requirements for an optimal operation of a purification stage focused on elimination of micropollutants since so far too few measured data have been available to assess the performance of the adsorption stages newly set up in Baden-Württemberg. Therefore, a sampling over several days will be carried out in the wastewater treatment  plants in Mannheim, Böblingen-Sindelfingen, Stockacher Aach and Kressbronn-Langenargen  in order to fill this knowledge gap, all of which have been implemented with an adsorption stage (see Figure 1a). The wastewater treatment plant Albstadt-Ebingen is also being sampled, which has had an adsorptive process technology to decolorize textile wastewater since 1992 in the form of the so-called AFF plant (see Figure 1b).

Detailed project description: Bestimmung der Spurenstoffelimination in Kläranlagen mit Aktivkohleeinsatz [DE] (pdf/178kb)

Financing Institution: Ministerium für Umwelt, Klima und Energiewirtschaft Baden-Württemberg
Contact:

Dr.-Ing. Marie Launay;
Dipl.-Ing. (FH) Annette Rößler

Duration: 06/2013 - 12/2013
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