Account for the substances discharged from municipal waste water treatment plants

Monitoring programme for priority substances

As part of a monitoring project funded by the federal states and coordinated by the German Environment Agency, a wide range of waste water samples from 49 municipal treatment plants in Germany were chemically analysed to obtain information on the entry of priority substances in water bodies. Overall, more than 1,000 samples were analysed from the discharge of municipal waste water treatment plants for 38 priority substances and a series of concomitant parameters.

The entry of substances into the aquatic environment via municipal waste water treatment plants contributes substantially to water pollution. The European Directive 2013/39/EU on environment quality standards, which was implemented in German law with the Ordinance on the Protection of Surface Waters (Oberflächengewässerverordnung, OGewV), provides that the first step to derive environmentally friendly measures is to survey the current situation of contamination with priority substances. In a monitoring project funded by the federal states and coordinated by the German Environment Agency, the database on the entry of priority substances in water via the discharge of municipal waste water treatment plants is extended. Forty-nine treatment plants in Germany selected according to defined criteria are subjected to regular sampling of a period of at least 12 months and these samples are analysed by TZW for 38 priority substances and several concomitant parameters (e.g. ammonium and nitrate). Besides the discharges, the inlets and various slurries from the treatment process are investigated at five waste water treatment plants. The testing programme for priority substances is supplemented by a measurement programme for selected biocides and transformation products, and by various additional measurement programmes of individual federal states.

Publications

S. Fuchs, M. Kaiser, S. Toshovski, F. Sacher, A. Thoma, B. Lambert, A. Ullrich, C. Meier, K. Pohl: Schadstoffe aus kommunalen Kläranlagen: Ein koordiniertes und harmonisiertes deutschlandweites Vorhaben zum Kläranlagen-Monitoring [Pollutants from municipal waste water treatment plants: A coordinated and harmonised project across Germany to monitor treatment plants]. KA Korrespondenz Abwasser, Abfall 65(9), 793-799 (2018)

F. Sacher, V. Kümmel, A. Thoma, S. Fuchs, M. Kaiser, B. Lambert, A. Ullrich: Analytik von prioritären Stoffen in Abwasserproben – Eine wichtige Voraussetzung für eine Bestandsaufnahme in deutschen Kläranlagen [Analysis of priority substances in waste water samples – A key requirement for a survey of German waste water treatment plants]. Mitt Umweltchem Ökotox 3/2018, 56-58 (2018)

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