Sewage treatment plant

Combined Approaches to Predict Microplastic Emissions Within an Urbanized Estuary (Warnow, Southwestern Baltic Sea)

hannes.schritt@ecologic.eu — Wed, 11 Aug 2021 08:37:47 +0000

Combined Approaches to Predict Microplastic Emissions Within an Urbanized Estuary (Warnow, Southwestern Baltic Sea) hannes.schritt… Wed, 08/11/2021 - 10:37

Titelbild

Beschreibung

Abstract: Microplastic river emissions are known to be one of the major sources for marine microplastic pollution. Especially urbanized estuaries localized at the land-sea interface and subjected to microplastic emissions from various sources exhibit a high microplastic discharge potential to adjacent coasts. To adapt effective measures against microplastic emissions a more detailed knowledge on the importance of various microplastic sources is necessary. As field data is scarce we combined different approaches to assess microplastic emissions into the Warnow estuary, southwestern Baltic Sea. Resulting microplastic emission estimates are based on in-situ measurements for the catchment emissions, whereas for the remaining microplastic sources within the estuary literature data on microplastic abundances, and various parameters were used (e.g. demographical, hydrological, geographical). The evaluation of the different emission scenarios revealed that the majority of microplastic is likely discharged by the Warnow river catchment (49.4%) and the separated city stormwater system (43.1%) into the estuary, followed by combined sewer discharges (6.1%). Wastewater treatment plant emissions exhibit the lowest percentage (1.4%). Our approach to estimate anti-fouling paint particles emissions from leisure and commercial shipping activities was associated with highest uncertainties. However, our results indicate the importance of this source highlighting the necessity for future research on the topic. Based on our assumptions for microplastic retention within the estuary, we estimate a potential annual emission of 152–291 billion microplastics (majority within the size class 10–100 µm) to the Baltic Sea. Considering all uncertainties of the different applied approaches, we could assess the importance of various microplastic sources which can be used by authorities to prioritize and establish emission reduction measures. Additionally, the study provides parameters for microplastic emission estimates that can be transferred from our model system to other urbanized Baltic estuaries.

Joint project

MicroCatch_Balt

DOI

https://doi.org/10.3389/fenvs.2021.616765

Magazine

Front. Environ. Sci.

Year

2021

Type of Result

(scientific) publications (peer-review, essays, book chapters, poster etc.)

Citation

Piehl S, Hauk R, Robbe E, Richter B, Kachholz F, Schilling J, Lenz R, Fischer D, Fischer F, Labrenz M and Schernewski G (2021) Combined Approaches to Predict Microplastic Emissions Within an Urbanized Estuary (Warnow, Southwestern Baltic Sea). Front. Environ. Sci. 9:616765. doi: 10.3389/fenvs.2021.616765

Tags

Sewage

Sewage treatment plant

Laquer

Macroplastics

Publikationstyp

Publikation

Factsheet 11: Mikroplastik in der Abwasserbehandlung - Methodenentwicklung für Probenahme und Analyse zur Erfassung der Eintragsmengen in Oberflächengewässer

janna.vakili@ecologic.eu — Thu, 06 May 2021 12:46:43 +0000

Factsheet 11: Microplastics in wastewater treatment - Development of sampling and analysis methods for detection of input quantities into surface waters janna.vakili@e… Thu, 05/06/2021 - 14:46

Titelbild

Photo: © Institute of Hydroscience, University of the Federal Armed Forces Munich

Beschreibung

It is not easy to determine how much microplastic is contained in wastewater and sewage sludge. In addition to plastic, countless other particles and substances are present. To reliably determine the concentration of microplastic particles, complex procedures for sampling as well as for removal of foreign substances and analysis of the microplastic particles are required.

The PLASTRAT research team has set itself the task of developing methods for these procedures and thus advancing the detection of inputs to surface waters. In this context, they provide important insights into the relevance of wastewater treatment plants as a retention option for plastic particles.

The project focuses on the quantification and technical reduction potential of plastic emissions in the field of urban water management, including sewage sludge treatment. The results on method development have been summarized in the 11th fact sheet of the research focus. The fact sheet is available for PDF download here.

Attachments

Factsheet 11 of the BMBF Research Focus Plastics in the Environment.

Joint project

PLASTRAT

Year

2021

Author

Authors

Natalie Wick

Steffen Krause

Christian Schaum

Franziska Fischer

Dieter Fischer

Franziska Klaeger

Juliana Ivar do Sul

Matthias Labrenz

Type of Result

factsheets

Citation

Wick, Natalie; Krause, Steffen; Schaum, Christian; Fischer, Franziska; Fischer, Dieter; Klaeger, Franziska; Ivar do Sul, Juliana; Labrenz, Matthias (2020): Microplastics in wastewater treatment: Development of sampling and analysis methods for detection of input quantities into surface waters. Fact sheet 11 of the BMBF research focus „Plastics in the Environment“.

Publikationstyp

Ergebnis

Factsheet 5.1: Mikroplastik aus industriellem Abwasser entfernen - Verfahrensverbesserungen durch Flockungsmittel

janna.vakili@ecologic.eu — Tue, 27 Apr 2021 10:02:22 +0000

Factsheet 5.1: Removing microplastics from industrial wastewater - Process improvements through the use of flocculants janna.vakili@e… Tue, 04/27/2021 - 12:02

Titelbild

Beschreibung

Microplastics can enter our wastewater along the entire value chain. Removal options exist primarily in wastewater treatment plants, here in the form of filtration, flotation and sedimentation processes. The removal performance of wastewater treatment plants determines how much microplastic is discharged into the environment.

Building on this, Factsheet 5.1 addresses the question of how current processes can be further improved. In this context, the researchers paid particular attention to the influence of flocculants on separation performance. The joint project EmiStop conducted over 1,000 flocculation tests with 9 flocculant combinations on 17 types of plastics. The results show that flocculants can increase process efficiency up to 99.9% removal efficiency.

In the EmiStop research project, industrial plastic emissions were qualitatively and quantitatively identified using innovative detection methods, and technologies to prevent environmental input via the wastewater pathway were evaluated and optimized.

The factsheet 5.1 is available for PDF download here.

Attachments

Factsheet 7.2 of the BMBF Research Focus Plastics in the Environment.

Joint project

EmiStop

Year

2021

Author

Authors

Mark Masch

Eva Bitter

Type of Result

factsheets

Citation

Masch, Mark; Bitter, Eva (2021): Removing microplastics from industrial wastewater: Process improvements through the use of flocculants. Fact sheet 5.1 of the BMBF research focus "Plastics in the Environment“.

Tags

Sewage treatment plant

Publikationstyp

InRePlast

Stephan.Guertler — Fri, 01 Mar 2019 09:03:22 +0000

InRePlast Stephan.Guertler Fri, 03/01/2019 - 10:03

Environmental Policy Instruments to Reduce Plastic Pollution of Inland Waters through Drainage Systems

The project aimed to make a significant, transdisciplinary contribution to applied research on the prevention of plastic discharges into water bodies via drainage systems from a behavioural and environmental economics perspective. In four model municipalities, the project recorded the quantity and type of plastics discharged into the drainage systems via wastewater and precipitation water collection in municipal wastewater treatment plants and precipitation drains within one year. The data obtained was then extrapolated for Germany by means of material flow analysis. With regard to regulatory deficits, instruments to reduce plastic inputs were developed in an interplay of legal and behavioural economics analyses. Selected instruments were tested in field experiments in companies and households. On this basis, the project partners developed policy briefs that inform policymakers, practitioners and associations about ways to measure and reduce plastic inputs into the environment.

Main areas of work

Analysis of legal framework conditions
Empirical investigations of plastic discharges into the drainage systems of four model municipalities
Model-based visualisation of the material flows from the considered input sources, namely households, transport routes and companies of the plastics industry in the model municipalities
Development of behaviour-based measures to motivate behavioural changes
Computer simulations of the effects of behaviour-based measures
Evaluation of the effect of measures by means of field experiments

Arbeitspakete

Work packages

WP 1: Inventory of the entry points of plastics into the drainage systems

Contact person

Dr. Marco Breitbarth, Research Institute for Water and Waste Management at RWTH Aachen (FIW), Kackertstraße 15 – 17, 52056 Aachen, e-mail: breitbarth@fiw.rwth-aachen.de

Project partners

City of Aachen, City of Stolberg, Simmerath Municipality, Roetgen Municipality, University of Kassel, Darmstadt University of Applied Sciences

Short description

The aim of this work package was to determine the status quo of plastic discharges into the drainage systems in the four selected model municipalities, which represent different settlement structures. For this purpose, the type and quantity of plastic products as well as their sources from households, industry, traffic and other activities related to wastewater collection and drainage of paved areas were determined.

WP 2: Development of a concept for multi-criteria, behavior-oriented set of instruments

Contact persons

Prof. Dr. Anja Hentschel, Darmstadt University of Applied Sciences, Department of Social Sciences, Professorship for Environmental and Energy Law, Haardtring 100, 64295 Darmstadt, e-mail: anja.hentschel@h-da.de

Dr. Maria Daskalakis, University of Kassel, Department of Economics, Division of Economic Policy, Innovation and Entrepreneurship, Environmental Policy Working Group, Nora-Platiel-Str. 4, 34109 Kassel, e-mail: daskalakis@wirtschaft.uni-kassel.de

Project partners

Prof. Dr. Frank Beckenbach, FIW

Short description

Starting from a behavioural economics analysis of relevant behavioural effects regarding the use of plastics in households and companies and possible approaches to motivate changes in their use as well as an investigation and deficit analysis of the existing legal framework at national and European level, behavioural measures and instruments were identified. Their effects with regard to ecological, social, technical, legal and economic feasibility were assessed. The result was a preliminary set of instruments, which were used as a basis for all further investigations and were adapted if necessary.

WP 3: Empirical analyses of success factors and barriers

Contact persons

Dr. David Hofmann, University of Kassel, Department of Economics, Division of Economic Policy, Innovation and Entrepreneurship, Environmental Policy Working Group, Nora-Platiel-Str. 4, 34109 Kassel, e-mail: dhofmann@uni-kassel.de

Project partners

City of Aachen, City of Stolberg, Simmerath Municipality, Roetgen Municipality, Prof. Dr. Frank Beckenbach, FIW, Darmstadt University of Applied Sciences

Short description

The empirical determination of the success factors and barriers of instruments for the reduction of plastic inputs via the drainage systems was based on the concept of multi-criteria behaviour-oriented instrumentation. The focus of the investigations were the actor groups households and companies. The investigations were preceded by expert discussions. A methodological triangulation was used: semi-structured, guideline-supported in-depth interviews were carried out as well as, in the case of households, a telephone survey and, in the case of households and companies, a field experiment.

WP 4: Material flow models of plastic inputs into canalisation systems and wastewater treatment plants

Contact person

Dr. Marco Breitbarth, Research Institute for Water and Waste Management at RWTH Aachen (FIW), Kackertstraße 15 – 17, 52056 Aachen, e-mail: breitbarth@fiw.rwth-aachen.de

Project partners

University of Kassel, Darmstadt University of Applied Sciences

Short description

Material flow models for plastic discharges of macro- and microplastics from the identified sources into the drainage systems were developed for the four model communities. Based on the model results, the sources and product types were analysed and evaluated with regard to their relevance for the plastic inputs. The data from the municipalities was then extrapolated to the federal level in a general model.

WP 5: Actor-based computer model and simulations for the development of material flows

Contact persons

Project partners

Prof. Dr. Frank Beckenbach, FIW, Darmstadt University of Applied Sciences

Short description

In this work package the design and development of multi-agent systems was carried out, which cover the actor groups households and companies. Based on the actor concept of WP 2, the multi-agent systems map actor-related decision-making processes and determinants of plastics use were linked to the material flow models from WP 4 in a subsequent step. Different legal and behavioural instruments and their material-ecological and economic implications were analysed and evaluated on the basis of different scenarios.

WP 6: Finalisation of the concept of multi-criteria, behaviour-oriented set of instruments

Contact person

Project partners

Prof. Dr. Frank Beckenbach, University of Kassel, FIW

Short description

In parallel to work packages 3 to 5, the concept of multi-criteria behaviour-oriented set of instruments were further specified by including the results of empirical studies and the multi-agent system. For the identified instruments and measures, it was estimated how they could work in practice, what control and enforcement effort they might create for authorities, whether they could be combined in certain areas, and what medium- and long-term effects the regulations could have. The adjustments to the concept were tracked and evaluated through computer simulations.

WP 7: Developing proposals for implementation

Contact persons

Dr. Marco Breitbarth, Research Institute for Water and Waste Management at RWTH Aachen (FIW), Kackertstraße 15 – 17, 52056 Aachen, e-mail: breitbarth@fiw.rwth-aachen.de

Project partner

Prof. Dr. Frank Beckenbach

Short description

The project results were prepared for political and practical implementation. For this purpose, recommendations for action were summarised in the form of policy briefs, which are intended to offer support to various actors for the implementation of the developed instrument packages. The project addressed the federal, state and local levels (legislators and authorities), consumer associations and NGOs as well as companies and associations of the plastics industry in order to facilitate the effective implementation of the measures.

Coordinator

Dr. Maria Daskalakis
University of Kassel, Department of Economics, Division of Economic Policy, Innovation and Entrepreneurship,
Environmental Policy Working Group
Nora-Platiel-Str. 4
34109 Kassel
Phone: +49 561 804-3052
e-mail: daskalakis@wirtschaft.uni-kassel.de

Website

www.inreplast.de

Partner Institutions

Darmstadt University of Applied Sciences, Professorship for Environmental and Energy Law

Research Institute for Water and Waste Management at RWTH Aachen / FiW

Associated Partners

City of Aachen

City of Stolberg

Simmerath Municipality

Roetgen Municipality

Wasserverband Eifel-Ruhr / WVER

BKV GmbH

German Association for Plastics Packaging and Films / IK

PlasticsEurope Germany

Kunststoff-Zentrum SKZ

German Federal Environmental Agency

DHB – Netzwerk Haushalt

BildungsCent e.V.

Prof. Dr. Frank Beckenbach, Cusanus Hochschule, Bernkastel-Kues

Duration Period

January 2019

December 2021

Tags

Sewage treatment plant

Multi-criteria evaluation

Standardization

Strategy on plastics

Plastic littering

Reduction of plastic use

Prevention of plastics

minimization strategies

Regulation

Project sheet

Project-sheet-InRePlast-2019.pdf

Koordinator label

Coordinator

Investigating options for reducing releases in the aquatic environment of microplastics emitted by (but not intentionally added in) products

linda.mederake@ecologic.eu — Tue, 03 Apr 2018 12:47:31 +0000

Investigating options for reducing releases in the aquatic environment of microplastics emitted by (but not intentionally added in) products linda.mederake… Tue, 04/03/2018 - 14:47

Untertitel

Final Report

Titelbild

Beschreibung

This report has been prepared for the European Commission by ICF in association with Eunomia and partners.

The objectives of the study were to:

Critically assess all available information on sources, pathways and impacts of microplastics in the aquatic environment, as well as on actions aiming at their reduction;
Provide the analysis for the Commission to identify relevant measures and policy options to reduce releases of microplastics in the aquatic environment including through product policies, improved sewerage and storm water collection, improved waste water treatment and any other relevant measures whether specific to the various sources of microplastics or horizontal measures;
After validation of the proposed options by the Commission, analyse the social, economic and environmental impacts of the selected options
Compare the impacts of the options with the baseline to enable the selection of most efficient and effective options, on the basis of which the Commission might propose preferred action(s)/options at EU level.

Attachments

full report

Year

2018

Author

Simon Hann

Chris Sherrington

Olly Jamieson

Molly Hickman

Peter Kershaw

Ayesha Bapasola

George Cole

Type of Result

(scientific) publications (peer-review, essays, book chapters, poster etc.)

Citation

Hann, Simon; Sherrington, Chris; Jamieson, Olly; Hickman, Molly; Kershaw, Peter; Bapasola, Ayesha; Cole, George (2018): Investigating options for reducing releases in the aquatic environment of microplastics emitted by (but not intentionally added in) products. Final Report. London/Bristol.

Tags

Catchment area

Sewage treatment plant

Publikationstyp

MicroCatch_Balt

KALEH — Wed, 20 Dec 2017 09:57:04 +0000

MicroCatch_Balt KALEH Wed, 12/20/2017 - 10:57

Investigation of Sinks and Sources of Microplastics from a Typical Catchment Area to the Open Baltic Sea

This project determined sources and sinks of microplastic in the Warnow river basin, as well as relevant dissemination processes on its way to the open Baltic Sea. Separate models were linked so that the resulting model covers the entire river basin including estuary and coastal waters. The linked models served to identify hotspot areas of microplastic entry and to estimate the effects of microplastic reduction measures in parts of the river basin. By converting the models into a handson multitouch table, project participants made interactive, creative learning modules that were presented in the form of a traveling exhibition in communities around the German Baltic coast from Stralsund to Flensburg. Further, MicroCatch_Balt included the examination of anti-fouling paint and extreme weather events as sources and higher organisms as sinks. Based on this, MicroCatch_Balt covered the most important aspects of microplastic contamination of limnic to marine systems in northern Germany, thereby offering interest groups the expertise with which to develop future monitoring and strategies for reduction.

Main areas of work

Sampling in the Warnow river basin and estuary, extraction and identification of microplastics
Modelling of microplastic input into the Warnow system of diffuse and point sources
Development of two multi-media modules for a multi-touch table and organisation of a traveling exhibition

Arbeitspakete

Work packages

WP 1 Sampling of microplastic from the environment

Contact person
PD Dr. habil. Matthias Labrenz, Leibniz Institute for Baltic Sea Research, Environmental Microbiology, Seestraße 15, 18119 Rostock, e-mail: matthias.labrenz@io-warnemuende.de

Project partner
IPF

Short description
In WP 1, environmental samples (water, sediment, soil, benthic and pelagic higher organisms) were collected, processed and identified in the Warnow area. Of particular interest were potential sources such as wastewater treatment plants / sewage separation, drainage ditches, erosion areas, industrially influenced areas as well as extreme events like Hanse Sail, New Year‘s Eve, heavy rain and storm events. Potential sinks, including higher organisms (mussels, worms, fish), beaches and sediments were also sampled. In all samples, the microplastic particles were identified and quantified using spectroscopic methods.

WP 2 Modelling of the Warnow estuary and the catchment area

Contact person
Dipl.-Ing.agr. Peter Kreins, Johann Heinrich von Thünen Institute - Federal Research Institute for Rural Areas, Forestry and Fisheries, Bundesallee 50, 38116 Braunschweig, e-mail: peter.kreins@thuenen.de

Project partner
FZJ, IOW

Short description
By adapting and combining different regional models, spatially high-resolution modelling of landside diffuse and point source of microplastic emissions into the river basin of the Warnow took place. In this way, on the one hand the hotspots of pollution in the Warnow river area were identified and on the other hand the entire landside microplastic entries into coastal waters were quantified.

WP 3 Microplastics Touring Exhibition

Contact person
Dr. Barbara Hentzsch, Leibniz Institute for Baltic Sea Research Warnemünde, Scientific Management and Communication, Seestraße 15, 18119 Rostock, e-mail: barbara.hentzsch@io-warnemuende.de

Project partner
FhIGD

Short description
In WP 3 a traveling exhibition with an interactive multimedia learning module was developed, which presents the project results in the form of animations. The traveling exhibition was shown in Stralsund, Rostock, Hamburg, Kiel, Eckernförde and Flensburg. The respective exhibition openings was accompanied by plenary discussions with representatives of the local environmental authorities and scientists.

WP 4 Project management

Contact person
PD Dr. habil. Matthias Labrenz, Leibniz Institute for Baltic Sea Research, Environmental Microbiology, Seestraße 15, 18119 Rostock, e-mail: matthias.labrenz@io-warnemuende.de

Short description
WP 4 covered project management and ensured efficient and productive execution of the project. The tasks of WP 4 included coordination with the other “Plastics in the Environment” projects PLAWES, PLASTRAT and the BONUS project MICROPOLL, as well as monitoring finances and work results, organising regular project meetings, disseminating project results to the public, and supporting the project manager with regard to internal and external scientific communication.

Coordinator

PD Dr. habil. Matthias Labrenz
Leibniz Institute for Baltic Sea Research Warnemünde / IOW,
Environmental Microbiology
Seestraße 15
18119 Rostock
Phone: +49 381/5197378
e-mail:matthias.labrenz@io-warnemuende.de

Website

https://www.io-warnemuende.de/microcatch-home.html

Partner Institutions

Leibniz Institute of Polymer Research Dresden / IPF

Jülich Research Centre, Institute for Bio- and Geosciences / FZJ-IBG

Johann Heinrich von Thünen Institute - Federal Research Institute for Rural Areas, Forestry and Fisheries / TI-LR

Fraunhofer Institute for Computer Graphics Research IGD Rostock / FhIGD

Duration Period

August 2017

April 2021

Tags

Information and teaching materials

Infraref spectroscopy

Sewage treatment plant

Combined sewar overflows

Project sheet

19_Projektblatt_MicroCatchBalt_ENG_2018.pdf

Koordinator label

Coordinator

PLAWES

KALEH — Wed, 20 Dec 2017 09:29:04 +0000

PLAWES KALEH Wed, 12/20/2017 - 10:29

Microplastic Contamination in the Weser- Wadden Sea – National Park Model System: an Ecosystem-Wide Approach

In PLAWES, the modelling system of the German national park Weser-Wadden Sea was the first large European river basin that was investigated in detail regarding its microplastic pollution. PLAWES conducted a pioneering study of the microplastic contamination from the headwaters to the North Sea (northern Atlantic Ocean) that comprised an interdisciplinary and integrated ecosystem approach and accounted for various point sources (wastewater treatment plants, separation systems) and diffuse sources (drainage, atmosphere) of pollution. The results were integrated into a model for identifying primary transport mechanisms and accumulation zones. The research investigated the effects of microplastics on ecosystems in the Weser-Wadden Sea system by analysing the interaction of microplastic with pathogens in biofilm and aquatic invertebrates. Outcomes of this particularly ecologically relevant aspects were used to estimate the environmental risk of microplastics for the model system, and subsequently made it transferable to other systems. In addition, the results of the analysis became part of new teaching materials in order to provide a knowledge platform for teachers, students, and parents across Europe. PLAWES generated unique data about the effects of microplastics on a large European river basin and its environment. This is significant not only for policymakers and stakeholders but also as a fundament for science-based solutions to address the microplastics problem.

Main areas of work

Microplastics in the Weser-Wadden Sea
Model-based balancing of diffuse and point sources of microplastic entries
Interaction of microplastics with pathogens and biota
Training measures to raise awareness of plastic waste

Arbeitspakete

Work packages

WP 0 Management, communication and dissemination

Contact person
Prof. Dr. Christian Laforsch, University of Bayreuth, Universitätsstraße 30, 95447 Bayreuth, e-mail: christian.laforsch@uni-bayreuth.de

Project partner
AWI

Short description
WP 0 ensured the targeted and efficient support of the consortium with regard to project management, communication and dissemination. WP 0 coordinated both the public relations work and the exploitation of the results achieved. WP 0 continued to coordinate the cooperation of all project partners and was therefore in close contact with all project partners. WP 0 coordinated the harmonisation with the joint research project MicroCatch_Balt with regard to sampling and processing, modelling, public relations, and data storage as well as communication with the other projects.

WP 1 Microplastics in the Weser-Wadden Sea model system

Contact person
Dr. Gunnar Gerdts, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Kurpromenade, 27498 Helgoland, e-mail: gunnar.gerdts@awi.de

Project partner
UBT, UOld

Short description
The aim of WP 1 was to investigate the entire Weser river system into coastal waters with regard to microplastic pollution. The final determination of the exact sampling points was carried out taking into account the real data required for RAUMISmGROWA- MePhos and "Tidal Model" (WP 3). The entire Weser including the Lower Weser and the Wadden Sea was investigated with regard to exposure to microplastic. Two campaigns were carried out at different seasons with different water conditions on the Weser.

WP 2 Entry points – point sources and diffuse entry

Contact person
Prof. Dr. Andreas Held, University of Bayreuth, BayCEER; second affiliation: Technical University of Berlin, Department of Environmental Chemistry and Air Pollution Control, Straße des 17. Juni 135, 10623 Berlin, e-mail: held@tu-berlin.de

Project partner
AWI

Short description
The aim of WP 2 was an exemplary consideration of the input paths for microplastics by investigation of important point sources such as wastewater treatment plants and separation water sewer systems as well as the diffuse input from drains and atmosphere. For this purpose, selected sampling points in the Weser river basin were characterised taking into account different landscape areas and land use types. The focus lay on quantifying the entry points of microplastics. Sampling was synchronised with the campaigns at the Weser.

WP 3 Model-based accounting of diffuse and point-shaped MP entries

Contact person
Prof. Dr. Frank Wendland, Jülich Research Centre IBG-3, Wilhelm-Johnen-Straße, 52428 Jülich, e-mail: f.wendland@fz-juelich.de

Project partner
TI, NLWKN

Short description
The aim was a spatially resolved quantification of the microplastic emissions from diffuse and point sources and the identification of spatial load centres and accumulation zones within the river basin and estuary. The microplastic entries were modelled from different types of diffuse entry points and point sources. The work was based on the models mGROWA, MEPhos, RAUMIS, as well as a transport modelling considering the estuarine hydro- and sediment dynamics. Within the framework of the project, the model chain was improved in a targeted manner according to microplastic entry modelling in the inland and the further distribution of the microplastics in the lower reaches, estuary and apron.

WP 4 Interaction of microplastic with pathogens and biota

Contact person
Prof. Dr. Jörg Oehlmann, Goethe University Frankfurt, Max-von-Laue-Straße 13, 60438 Frankfurt am Main, e-mail: oehlmann@bio.uni-frankfurt.de

Project partner
AWI, UBT, UOld

Short description
In WP 4, the ecosystem effects of microplastic on the Weser-Wadden Sea model system were described on the basis of the two ecologically relevant aspects "Interaction with pathogens and antimicrobial resistance" and "Interaction with aquatic invertebrates".

Interaction with pathogens and antimicrobial resistance: Since biofilms are sites of increased genetic exchange and increased antimicrobial resistance occurs below wastewater treatment plants, plastics could not only contribute to the dispersion of pathogenic organisms, but also of resistance genes. The consequences of such a transfer were previously unknown. AWI therefore used molecular microbial source tracking techniques (DNA/RNA arrays for the detection of pathogenic bacteria, viruses, protozoa and virulence/resistance genes) to investigate plastic samples from the Weser region. Interaction with aquatic invertebrates: In order to generate exposure data, different mollusk species were applied in situ in the Weser, the tidal area and the Wadden Sea. Absorbed microplastic was examined in the digestive tract and in tissue samples and confirmed in parallel by pyrolysis-GC-MS and spectroscopic methods. Historical mussel samples (since 1986) from the Federal Environmental Specimen Bank (UBA) were examined using pyrolysis-GC-MS. The chronic toxicity of microplastic is characterised in laboratory experiments with mussels and worms. Different polymers were conditioned in situ and toxicologically characterised in chronic exposure experiments.

WP 5 Training measures to raise awareness of plastic waste

Contact person
Prof. Dr. Franz X. Bogner, University of Bayreuth, Didactics of Biology, Universitätsstraße 30, 95447 Bayreuth, e-mail: franz.bogner@uni-bayreuth.de

Project partner
AWI, UOld

Short description
In addition to the ethical assessment skills of students, WP 5 incorporated existing individual environmental knowledge. Innovative teaching materials with a sound reference to everyday life were evaluated for a holistic understanding regarding the burden of plastics in the model system and disseminated via an Internet teaching/learning portal. Within the work package, UBT provided a handbook for teachers and "public relations workers".

Coordinator

Prof. Dr. Christian Laforsch
University of Bayreuth
Chair of Animal Ecology I / UBT
Universitätsstraße 30
95447 Bayreuth
Phone: +49 921 / 55-2651
e-mail: christian.laforsch@uni-bayreuth.de

Dr. Gunnar Gerdts
Alfred Wegener Institute
Helmholtz Centre for Polar and Marine Research (AWI)
Kurpromenade
27498 Helgoland
Phone: +49 4725 / 819-3245
e-mail: gunnar.gerdts@awi.de

Website

http://www.bayceer.uni-bayreuth.de/PLAWES/en/

Partner Institutions

Coast Research Centre at the Lower Saxony State Enterprise for Water Management, Coastal Protection and Nature Conservation / NLWKN

Jülich Research Centre / FZJ

Goethe University Frankfurt / GU

Johann Heinrich von Thünen Institute - Federal Research Institute for Rural Areas, Forestry and Fisheries / TI-LR

Carl von Ossietzky University of Oldenburg, Institute of Chemistry and Biology of the Sea / UOld

Duration Period

September 2017

April 2021

Tags

Sewage

Methodology of analyses

Information and teaching materials

Infrared

Infraref spectroscopy

Sewage treatment plant

Sewage sludge

Municipality

Communication strategy

Combined sewar overflows

Prevention of plastics

Polyamide (PA)

Polyester

Polyethylene (PE)

High density polyethylene PE-HD

Polyethylene terephthalate (PET)

Polyvinyl chloride (PVC)

sampling

Sample purification

Pyrolysis GC

Raman microspectroscopy

Environmental sustainability

Scanning electron microscopy

Plasticiser

Project sheet

18_Projektblatt_PLAWES_ENG_2018.pdf

Koordinator label

Coordinator

MicBin

KALEH — Wed, 20 Dec 2017 09:13:16 +0000

MicBin KALEH Wed, 12/20/2017 - 10:13

Microplastics in Inland Waters – Investigation and Modeling of Entries and Whereabouts in the Danube Area as a Basis for Action Planning

Within the framework of this project, a first-ever accounting of macro-, meso- and microplastics released into the German part of the Danube river basin was achieved, with measuring stations at its main tributaries. Microplastic particles (particles < 5 mm) were examined by using various, complementary analytical methods. The focus lay on specifically small particles that are invisible to the naked eye with diameters less than 300 μm as there is currently a distinct lack of data about these particles. This project mapped the sources, sinks, transport processes and fragmentation of plastics in separate material flow models for micro- and macroplastics. Targeted, standardised sampling and supplementary laboratory experiments are clarifying the relevance of previously neglected input paths such as agricultural land or atmospheric deposition. Results were implemented into existing models, the models were validated and a plastic balance for the German Danube watershed was prepared. Through scenario analyses, it was possible to identify measures to reduce plastic pollution at the level of entire river basins.

Main areas of work

Entry balancing of macro-, meso- and particularly microplastic in the German Danube river basin through uniform sampling campaigns, modelling and supplementary laboratory tests
Balancing of previously unconsidered sources and sinks, such as the input of plastic by agriculture, atmospheric deposition of microplastic and degradation processes of plastics in the environment
Derivation of minimisation strategies

Arbeitspakete

Work packages

WP 1 Coordination

Contact person
Dr. Nicole Zumbülte, TZW: DVGW Water Technology Centre, Analysis and Water Quality department, Karlsruher Straße 84, 76139 Karlsruhe, e-mail: nicole.zumbuelte@tzw.de

Project partner

UOS, UniA, BfG, THK, LfU, BKV

Short description
The TZW was responsible for the scientific and general internal coordination within the project, ensured the exchange of information between the internal and external partners and research networks. This included the organisation of sampling campaigns and sample distribution to the individual partners, the coordination of sample analysis, the organisation of project meetings for exchange between the partners and the maintenance of scientific exchange with other projects at national and international levels.

WP 2 Analysis of plastics in environmental samples

Contact person
Prof. Dr. Thomas Ternes, German Federal Institute of Hydrology (BfG), Am Mainzer Tor 1, 56068 Koblenz, e-mail: ternes@bafg.de

Project partner
LfU, TZW, UOS

Short description
In this work package, the samples from WP 3 and WP 4 were analysed using three complementary methods. Starting from a high sample volume, these were pre-selected in advance by BfG using an effective screening procedure (low sample preparation effort, sample analysis using pyrolysis gas chromatography coupled with mass spectrometry). Samples with contents above a threshold value to be defined were subjected to a much more complex and precise analysis using Raman (TZW) and IR spectroscopy (LfU). These processes provided detailed information on particle properties (concentration, size, polymer type, and shape).

WP 3 Identification of entries / sources

Contact person
Dr. Korbinian Freier, Bavarian State Office for the Environment, Demollstr. 31, 82407 Wielenbach, e-mail: korbinian.freier@lfu.bayern.de

Project partner
THK, BKV, UOS

Short description
The first step in mass balancing of the selective and diffuse input of microplastics requires a characterisation of all potential sources. The aim of WP 3 was therefore to investigate and quantify entries from points and areas in limnic systems. The results were incorporated in WP 5. The focus was on atmospheric deposition, linear inputs in connection with littering, wastewater treatment plants, landfill leachates, and the weathering of plastics.

WP 4 Transport, distribution and fate: Process understanding of water, soil, air

Contact person
Prof. Dr. Thomas Ternes, German Federal Institute of Hydrology (BfG), Am Mainzer Tor 1, 56068 Koblenz, e-mail: ternes@bafg.de

Project partner
BKV, LfU, UniA, TZW, UOS, THK

Short description
In addition to sinks such as hydroelectric power plants, this WP looked at transport and relocation processes of microplastics and possible intermediate reservoirs for microplastics such as soils or water sections with low flow. In addition, degradation and comminution processes of plastics were investigated in laboratory experiments. Sinks or reservoirs for microplastics were identified by coordinated sampling in the water body and mass balancing of a water body section. The results of WP 4 were incorporated into the models of WP 5.

WP 5 Drawing up balance sheets by modelling and deriving measures

Contact person
Dr. Jörg Klasmeier, Osnabrück University, Institute of Environmental Systems Research, Barbarastraße 12, 49078 Osnabrück, e-mail: jklasmei@uos.de

Project partner
LfU, UniA, BKV, TZW

Short description
Entries in water bodies were accounted for considering the various sources and sinks and allowing for an estimation of the total freight in the Danube River System. Process-oriented small to medium scale models for microplastic (UniA, UOS) and supraregional models for micro-, meso- and macroplastic (BKV) were fed with the experimental data and existing data on wastewater treatment plants (LfU, UOS) obtained in the various work packages. From the results of all work packages, a summary evaluation of the sources and sinks with recommendations for measures to reduce water pollution was carried out.

WP 6 Communication

Contact person
Dr. Nicole Zumbülte, TZW: DVGW Water Technology Centre, Analysis and Water Quality Department, Karlsruher Straße 84, 76139 Karlsruhe, e-mail: nicole.zumbuelte@tzw.de

Project partner
LfU, THK

Short description
The MicBin project homepage informs about project contents, actions and results. In addition, a short film was produced and made available to the public. The public was made aware of this issue through a waste collection campaign on the water and participation in the German Sustainability Action Days (DAN). Stakeholders from research, authorities and industry was informed and involved in workshops.

Case Studies

The MicBin project focused on balancing the input of macro-, meso- and particularly microplastics for the German Danube river basin with measurement campaigns at the main Danube tributaries. Among other things, agricultural entries as well as transport and relocation processes were also taken into account.

Coordinator

Dr. Nicole Zumbülte
DVGW Deutscher Verein des Gasund Wasserfaches e. V. – Technischwissenschaftlicher Verein – Bonn
TZW: DVGW-Water Technology Centre, Analysis and Water Quality Department
Karlsruher Straße 84
76139 Karlsruhe
Phone: +49 721-9678 139
e-mail: nicole.zumbuelte@tzw.de

Website

https://www.micbin.de/

Partner Institutions

German Federal Institute of Hydrology (BfG) / BfG

DVGW-Technologiezentrum Wasser / TZW

Cologne Technical University, STEPs / THK

BKV GmbH / BKV

Bavarian State Office for the Environment / LfU

University of Augsburg / UniA

Osnabrück University / UOS

Duration Period

October 2017

March 2021

Tags

Microplastics

Catchment area

Modeling

minimization strategies

Infraref spectroscopy

Sewage treatment plant

Project sheet

17_Projektblatt_MicBin_ENG_2018.pdf

Koordinator label

Coordinator

EmiStop

KALEH — Tue, 19 Dec 2017 16:41:32 +0000

EmiStop KALEH Tue, 12/19/2017 - 17:41

Identification of Industrial Plastic Emissions by Means of Innovative Detection Methods and Technology Development to Prevent the Input into the Environment via the Wastewater Pathway

This project systematically detected emissions of plastics into wastewater from relevant industries. Emissions levels were analysed along all points of the value chain (production, transport, processing, and cleaning of synthetic materials).

The goal was to select wastewater treatment technologies that optimise the reduction of emissions of plastics for the respective value chain. The project evaluated existing technologies for separating particles, investigated deposition rates, and developed approaches for technical optimisation. Optimisation also includes technological developments such as flocculants. Researchers conducted tests in both laboratory and pilot project settings – selected large scale technical wastewater treatment plants were investigated at industrial facilities.

Due to the existing analytical uncertainties, the following detection methods were used to evaluate the existing and developed technologies:

Dynamic differential calometry for qualification and quantification (concentrations)
Raman spectroscopy for qualification and quantification (particle numbers)
Correlations of the plastic concentrations to routine water chemical analyses (for a retrospective estimation of the plastic loads)
Tracer test with magnetic plastic particles (simple and reliable quantification in large dilutions) for balancing in laboratory and pilot tests

Apart from the technical aspects, the focus of this project was also on socio-economic aspects. Thus, measures to prevent economic losses and retain value were reviewed together with the associated industrial enterprises and evaluated with partners from the scientific community and other interest groups.

Main areas of work

Standardisation of sampling and sample preparation for industrial wastewater (in alignment with Plastik-Net and other joint research projects)
Quantitative and qualitative measurement of plastic concentrations in industrial wastewater using Raman spectroscopy and dynamic differential calorimetry
Extended data collection at the sampled industrial waste water treatment plants for the derivation of the plastic loads and testing of a correlation between the measurement results and routine water chemical analyses
Development of magnetic plastic particles in the micrometre range with the physical properties of relevant types of plastic
Development of a tracer test with magnetic plastic particles
Assessment of technologies for particle separation with regard to the retention of (micro-) plastic particles
Optimisation of particle separation technologies
Development of flocculants for the targeted improvement of the retention of individual types of plastics and their mixtures
Delphi surveys of industry and sector associations as well as of politics and science to identify perceived risks and obstacles as well as opportunities and the willingness to participate
Multi-criteria analysis for the development of weighted, ecological and socio-economic criteria for the sustainability assessment of the project results

Arbeitspakete

Work packages

WP 1 Development of analytical methods for plastic particles

Contact persons
Prof. Dr. Jutta Kerpen, RheinMain University, Institute for Environmental and Process Engineering, Department of Wastewater Treatment, Am Brückweg 26, 65428 Rüsselsheim, e-mail: jutta.kerpen@hs-rm.de

Prof. Dr. Susanne Lackner, Technical University of Darmstadt, Institute IWAR, Department of Wastewater Engineering, Franziska-Braun-Straße 7, 64287 Darmstadt, e-mail: s.lackner@iwar.tu-darmstadt.de

Prof. Dr.-Ing. Markus Engelhart, Technical University of Darmstadt, Institute IWAR, Department of Wastewater Technology, Franziska-Braun-Straße 7, 64287 Darmstadt, e-mail: m.engelhart@iwar.tudarmstadt.de

Project partner
EnviroChemie

Short description
A routinely applicable sampling and sample preparation procedure were developed in order to create a uniform and comparable database for industrial wastewater. For the subsequent qualification and quantification of microplastics in (industrial) wastewater samples, the methods of dynamic differential calorimetry and Raman spectroscopy were adapted to industrial wastewater. The respective analysis results were compared with standardised routine measurements and operational self-analysis to determine correlations.

WP 2 Tracer test

Contact persons
Prof. Dr. Susanne Lackner, Technical University of Darmstadt, Institute IWAR, Department of Wastewater Engineering, Franziska-Braun-Straße 7, 64287 Darmstadt, e-mail: s.lackner@iwar.tu-darmstadt.de

Dr. Kyriakos Eslahian, BS-Partikel GmbH, Nestléstr. 41, 55120 Mainz, e-mail: eslahian@bs-partikel.de

Short description
In order to balance individual process technologies for plastic particle retention in real water matrices, a method for the quantification of magnetic plastic particles by means of magnetic susceptibility scales was established. For this purpose, particles in the size range from 1 μm to 300 μm were synthesised with the greatest possible magnetic susceptibility, which imitate the morphologies and chemical properties of environmental plastic particles.

Furthermore, a continuous method for the production of these particles was established in order to ensure the best possible reproducibility and scalability for subsequent applications.

WP 3 Identification of industrial entry points

Prof. Dr. Susanne Lackner, Technical University of Darmstadt, Institute IWAR, Department of Wastewater Engineering, Franziska-Braun-Straße 7, 64287 Darmstadt, e-mail: s.lackner@iwar.tu-darmstadt.de

Project partner
EnviroChemie, inter 3

Short description
The entry points of microplastics from industrial wastewater into surface waters were determined by uniform characterisation and quantification of the plastic emissions of individual industrial plants. The evaluation of plastic emissions on the basis of mass flows, variations and production information with key figure system and balance tools, hotspots and temporal variations of the particle input were identified.

WP 4 Balancing of technical systems

Contact persons

Dr.-Ing. Eva Bitter, EnviroChemie GmbH, F&E, In den Leppsteinswiesen 9, 64380 Rossdorf, e-mail: eva.bitter@envirochemie.com

Project partner

TU-AW, inter3, HSRM

Short description
In laboratory and pilot tests, various process techniques (filtration in various filter units such as membrane plants, double-layer filters, cloth filters; flocculation in combination with filtration, flotation or sedimentation) were evaluated with regard to plastic particle removal. For this purpose, the tracer particles developed in WP 2 were used, which enable the use of synthetic and real industrial waste water. Furthermore, the existing industrial process technology was evaluated at different industrial sites and optimised with regard to the separation of plastic particles.

WP 5 Optimisation of plastic retention

Contact persons
Dr.-Ing. Eva Bitter, EnviroChemie GmbH, F&E, In den Leppsteinswiesen 9, 64380 Rossdorf, e-mail: eva.bitter@envirochemie.com

Project partner
TU-AW

Short description
Based on the results of WP 4, the pilot plants were adapted by specific design changes (e.g. flow control, sludge removal, conveyor technology) and the success of these optimisations was evaluated in further balancing experiments. For the industries considered, in addition to constructive optimisation of process engineering, production-integrated measures to reduce plastic emissions were derived. The production information collected in WP 3 served as the basis for this.

WP 6 Development of flocculants for plastics sorts

Contact persons
Dr.-Ing. Eva Bitter, EnviroChemie GmbH, F&E, In den Leppsteinswiesen 9, 64380 Rossdorf, e-mail: eva.bitter@envirochemie.com

Project partner
TU-AT, TU-AW

Short description
In experiments with beakers, individual polymers for the targeted flocculation of particles of different types of plastic in the size range from 10 to 300 μm were tested. The results were then used to test specific blends of polymers to produce the most stable flakes of particles of individual plastic types. With these results, the tests and developments were extended to mixtures of different types of plastics.

The laboratory test results were then supplemented by pilot tests using tracer particles developed in WP 2.

WP 7 Risk and potential analysis

Contact person
Dipl.-Ing. Wolf Raber, inter 3 GmbH - Institute for Resource Management, Otto-Suhr-Allee 59, 10585 Berlin, e-mail: raber@inter3.de

Project partner
TU-AT, TU-AW, EnviroChemie, HSRM, BS-Partikel

Short description
To maximise the broad application of the EmiStop optimisation approaches and avoidance strategies, the risks and potentials were identified from the perspective of the key actors, evaluated and fed into the project at an early degree of technology maturity. Furthermore, an expert-supported set of sociopolitical, economic, and ecological evaluation criteria and a meaningful set of indicators were derived in order to analyse and evaluate the multicriterial optimisation approaches and avoidance strategies and in a next step measures for implementation and diffusion.

WP 8 Management and communication

Contact persons
Dr.-Ing. Eva Bitter, EnviroChemie GmbH, F&E, In den Leppsteinswiesen 9, 64380 Rossdorf, e-mail: eva.bitter@envirochemie.com Dr. Anja Steglich, inter 3 GmbH - Institute for Resource Management, 10585 Berlin, e-mail: steglich@inter3.de

Project partner
TU-AT, TU-AW, HSRM, BS-Partikel

Short description
In order to disseminate and implement the project results, industrial companies were actively involved and dialogue is carried out with experts from relevant industry associations (e.g. PlasticsEurope e.V., IK Industrievereinigung Plastikverpackungen e.V., GKV Gesamtverband Plastikverarbeitende Industrie e.V.). The collaboration was commissioned to a) develop the results into a consensual overall perspective, b) prepare these into action-oriented and implementable guidelines and c) make them available via established channels and multipliers, e.g. the Responsible Care Initiative of the chemical industry.

Coordinator

Dr.-Ing. Eva Bitter
EnviroChemie GmbH
In den Leppsteinswiesen 9
64380 Rossdorf
Phone: +49 6154-6998-57
e-mail: eva.bitter@envirochemie.com

Website

http://www.emistop.de/page8.html

Partner Institutions

Technical University of Darmstadt, Institute IWAR, Department of Wastewater Engineering

Technical University of Darmstadt, Institute IWAR, Department of Wastewater Technology

RheinMain University, Institute for Environmental and Process Engineering / HSRM

inter 3 GmbH-Institute for Resource Management

BS-Partikel GmbH

Duration Period

January 2018

December 2020

Tags

Sewage

Methodology of analyses

Sewage treatment plant

Environmental accounting

Polyethylene terephthalate (PET)

Polymer analysis

Polypropylene (PP)

Polystyrene (PS)

Polyvinyl chloride (PVC)

Project sheet

15_Projektblatt_EmiStop_ENG_2018.pdf

Koordinator label

Coordinator

REPLAWA

KALEH — Tue, 19 Dec 2017 16:24:02 +0000

REPLAWA KALEH Tue, 12/19/2017 - 17:24

Reduction of the Input of Plastics via Wastewater into the Aquatic Environment

The REPLAWA project covered questions of water resource protection in connection with wastewater treatment. The project investigated and quantitatively assessed entry points into water bodies through treatment plants, storm water drainage, and combined sewer overflows as well as swales at treatment facilities and in sewage sludge. It tested and rated various practical methods of reducing and eliminating plastic emissions into waterways during wastewater treatment. Based on the results of these investigations and of assessments regarding international regulatory approaches in this field, the project derived strategies for reducing plastic release from wastewater treatment into waterways. Furthermore the sensitization of policymakers as well as plant operators to this problem is also relevant.

The pollutant in focus of this project was microplastic, which poses the greatest challenges to reach the project’s goals.

The results are of immediate environmental and economic use, as they spread technical expertise regarding the choice and integration of technologies suitable for retaining plastic in wastewater treatment. Relevant political and administrative decision makers benefit from the inventory the project inherently provides and from suggested strategy developments of urban water management.

Main areas of work

Further development and testing of suitable sampling, preparation and analysis methods for plastic particles in wastewater and sewage sludge
Inventory and classification of discharges into water bodies via combined sewer overflows, precipitation water, sewage plant effluents and diffuse sources
Inventory and balancing on large-scale wastewater treatment plants
Evaluation and further development of various technical solutions for the separation of plastics during wastewater treatment by means of comparative tests
Social science analysis and classification of wastewater-related regulatory proposals and measures worldwide
Recommendations for action on strategy development in the field of urban water management and the associated regulation of plastic input

Arbeitspakete

Work packages

WP 1 Sampling and analysis methods

Contact person
Prof. Dr.-Ing. Matthias Barjenbruch, Technical University of Berlin, Faculty VI - Planning Building Environment, Institute of Civil Engineering, Chair of Urban Water Management, Gustav-Meyer-Allee 25, 13355 Berlin, e-mail: matthias.barjenbruch@tu-berlin.de

Project partner
Emscher Wassertechnik, TU Braunschweig ISWW, Lippeverband

Short description
Definition and application of sampling and analysis methods, comprising i.a. the following tasks:

Compilation of requirements for sampling, sample preparation and analysis for microplastic
Selection of suitable analytical techniques for the joint research project
Establishment of technical and personnel capacities at the Berlin location
Definition of sampling and preparation methods for wastewater and sewage sludge
Further development, validation of sampling and analysis
Development of the methodical procedure for microplastic doping in separation investigations

WP 2 Inventory of entry points for plastics in water bodies

Contact person
Prof. Dr.-Ing. Holger Scheer, Emscher Wassertechnik GmbH, Brunnenstr. 37, 45128 Essen, e-mail: scheer@ewlw.de

Project partner
TU Berlin FG Siwawi, TU Braunschweig ISWW, Lippeverband, Stadtentwässerung Braunschweig GmbH

Short description
Inventory and evaluation of the pathways microplastic takes into water, agriculture and groundwater, which includes the following tasks:

data collection, review and selection of appropriate river basin sections, groundwater bodies, and agricultural land
definition of a detailed measurement and sampling programme
representation and verification of discharges and boundary conditions
sampling and analyses
supplementary surveys and data evaluation with regard to wastewater input
analysis of measured data, quantitative assessment of entry points, evaluation

WP 3 Inventory and balancing on large-scale wastewater treatment plants

Contact person
Prof. Dr.-Ing. Matthias Barjenbruch, Technical University of Berlin, Faculty VI - Planning Building Environment, Institute of Civil Engineering, Chair of Urban Water Management, Gustav-Meyer- Allee 25, 13355 Berlin, e-mail:matthias.barjenbruch@tu-berlin.de

Project partner
Emscher Wassertechnik, TU Braunschweig ISWW, Lippeverband, Stadtentwässerung Braunschweig GmbH

Short description
Investigation, evaluation and optimisation approaches for microplastic retention in largescale wastewater treatment plants with the following individual tasks:

Compilation of requirements for wastewater treatment plants with conventional activated sludge process and process with further solids retention
Selection and coordination with large-scale plants
Detailed recording of plant characteristics and boundary conditions
Sampling and analyses
Evaluation of measured data, balancing of material flows, evaluation
Derivation of further requirements: technical and operational optimisation approaches for large-scale plants and for the semi-technical investigations (WP 4) with regard to the retention of microplastics

WP 4 Semi-technical investigations for the further development of technical solutions for the deposition of plastics

Contact person
Prof. Dr.-Ing. Norbert Dichtl, Technical University of Braunschweig, Institute of Sanitary and Environmental Engineering, Pockelsstraße 2a, 38106 Braunschweig, e-mail: n.dichtl@tu-braunschweig.de

Project partner
Emscher Wassertechnik GmbH, TU Berlin FG Siwawi, Mecana Umwelttechnik GmbH, Nordic Water GmbH, MARTIN Membrane Systems AG, Stadtentwässerung Braunschweig GmbH

Short description
Evaluation and optimisation of the retention performance of microplastics in wastewater treatment plants by investigations on a semitechnical scale for the (downstream) filtration of wastewater and for sewage sludge digestion with doped microplastics. The following steps were carried out for this purpose:

selection of plant technology for separation processes using membrane, cloth filter and sand filter
setting up the test and measurement programme
construction of semi-technical test facilities for comparative investigations at the Braunschweig site
execution of the experimental operation, sampling and analyses
technical and operational optimisation of the plants with regard to the retention of microplastics
final evaluation and assessment of measurement data and plant operation

WP 5 Social science analysis of regulatory projects and measures worldwide

Contact person
Univ.-Prof. Dr. phil. habil. Anja P. Jakobi, Technical University of Braunschweig, Institute of Social Sciences, Chair of International Relations, Bienroder Weg 97, 38106 Braunschweig, e-mail: a.jakobi@tu-braunschweig.de

Project partner
Emscher Wassertechnik GmbH

Short description
Compilation of international regulatory concepts on microplastics in wastewater, with analysis of stakeholder interests, evaluation of political measures with regard to problem solving and compilation of political options for action in the field of urban water management.

Interviews with national, European and global actors
Networking with the other key actors of the research focus
Analysis of stakeholder interests (state, private) and their effects on regulation (descriptive and causal)
Causal analysis of regulatory results (qualitative and – depending on data quality – statistical)
Evaluation of policy measures with regard to problem-solving

WP 6 Recommendations for action on strategy development in the field of urban water management

Contact person
Prof. Dr.-Ing. Holger Scheer, Emscher Wassertechnik GmbH, Brunnenstraße 37, 45128 Essen, e-mail: scheer@ewlw.de

Project partner
TU Berlin FG Siwawi, TU Braunschweig ISWW, TU Braunschweig IB-ISW, Mecana Umwelttechnik GmbH, Nordic Water GmbH, MARTIN Membrane Systems AG, Lippeverband, Stadtentwässerung Braunschweig GmbH

Short description
Elaboration of recommendations for strategy development regarding the evaluation and reduction of the input of microplastics via wastewater into the natural environment, including the classification of regulatory approaches:

Recommendations for action on water discharges, rainwater treatment, and agricultural utilisation
Description of technical possibilities for elimination and reduction in wastewater treatment plants, upgrading of wastewater treatment plants
Upscaling of the results for different wastewater treatment plant size classes
To show how regulatory approaches and changes can be initiated or influenced
Development of further recommendations for action and information on the overall strategy development, including the results of the social science analyses

WP 7 Coordination of the joint research project

Contact person
Prof. Dr.-Ing. Holger Scheer, Emscher Wassertechnik GmbH, Brunnenstraße 37, 45128 Essen, e-mail: scheer@ewlw.de

Short description
Technical and organisational coordination of the joint research project regarding result determination and support in disseminating findings. Among other things, the following steps were carried out for this purpose: