Influence of former sewage farm cultivation on the groundwater in Berlin
Head of working group
AG Hydrogeologie/ Landschaftswasserhaushalt
IBU, Fk. V, Gebäude A1
Carl von Ossietzky Universität
Raum: A1 1-130
Tel.: ++49 (0) 441 / 798 - 4236
Fax: ++49 (0) 441 / 798 -3769
In the course of 100 years of sewage farm management in the Berlin area, a large number of pollutants were brought into the Berlin groundwater decades ago. Some of these substances can still be detected in groundwater today under reduced oxygen-poor conditions. The flow direction of the groundwater from the high plateaus is always towards the valley, where the raw water is collected at the large river lakes and processed into drinking water. In the project the risk of raw water being impaired by land-based groundwater is assessed. In particular, where sewage farms have been operated in the inflow for decades, the hydraulic range of the contamination is to be estimated and statements made on the future development of the contamination. For this purpose, an analytical method for selected relevant organic trace substances is being developed. By evaluating GC/MS overview analyses ('nontarget analysis') of various groundwaters in the effluent of sewage farms, a selection of substances is made first. The relevance of the organic substances is estimated under consideration of hydrodynamic and hydrochemical conditions as well as the history of sewage farm management. In addition to parameters routinely determined in the BWB laboratory, such as B, K, NH4, EDTA and some selected organic substances, adata record of chemical parameters is to be compiled, with which the locations of the Berlin waterworks and the future quality development of the raw water/wells can be assessed more precisely. After the routine incorporation of the developed analysis method, extensive investigations of the Berlin groundwater, as well aslaboratory-scale experiments on the degradation behaviour of these substances are carried out.
The behaviour of the contaminants originating from sewage farm management is simulated by suitable numerical model approaches. Scenario calculations should also provide information on the expected development of the contamination plumes.
Ulrike Hass (FUB/BWB): "Untersuchung der Grundwassergenese und Bewertung der organischen Zusammensetzung des Grundwassers im Einzugsgebiet verschiedener Berliner Wasserwerke unter besonderer Berücksichtigung der ehemaligen Rieselfeldbewirtschaftung"
Hass, U., Dünnbier, U., Massmann, G. (2012): Occurrence and distribution of psychoactive compounds and their metabolites in the urban water cycle of Berlin (Germany). Water Research, 46(18), 6013-6022.
Hass, U., Dünnbier, U., Massmann, G. (2012). Occurrence of psychoactive compounds and their metabolites in groundwater downgradient of a decommissioned sewage farm in Berlin (Germany), Environ. Sci. Pollut. Res., 19(6): 2096-2106
Hass, U., Dünnbier, U., Massmann, G., Pekdeger, A. (2011). Simultaneous determination of psychoactive substances and their metabolites in aqueous matrices by ultrahigh-performance liquid chromatography-tandem mass spectrometry. Anal. Methods 3, 902-910