Abstract
The project focuses on the efficiency of combined technologies to reduce the release of micropollutants and bacteria into surface waters via sewage treatment plants of different size and via stormwater overflow basins of different types. As a model river in a highly populated catchment area, the river Schussen and, as a control, the river Argen, two tributaries of Lake Constance, Southern Germany, are under investigation in this project. The efficiency of the different cleaning technologies is monitored by a wide range of exposure and effect analyses including chemical and microbiological techniques as well as effect studies ranging from molecules to communities.
Highlights
According to the European Water Framework Directive, a “good ecological and chemical status of surface waters” has to be achieved by 2015
Brunner and colleagues [8] showed the efficiency of retention soil filters for the reduction of particular and dissolved material as well as for ammonia, and Waldhoff and coworkers [9] found bacteria to be reduced by up to 90%
An integrative approach to address simultaneously wastewater treatment plants (WWTPs) and storm water overflow basins (SOBs), micropollutants and pathogens and combinations of different cleaning technologies to reduce their release into surface waters has not been realized so far which makes the project SchussenAktivplus highly innovative with this respect
Summary
According to the European Water Framework Directive, a “good ecological and chemical status of surface waters” has to be achieved by 2015. A further outstanding advantage of this project is, in addition, that the efficiency of the applied technologies is checked by means of chemical and microbiological analyses but, in parallel, by a wide range of ecotoxicological and ecological effect studies ranging from the molecular to the community level Based on this holistic approach it will be possible to establish causal relationships between exposure data, results from laboratory tests indicating toxic or endocrine potentials, and effect data in feral animals by means of plausibility chains as outlined by Triebskorn and colleagues [10]. Key activities Prior and after application of different sewage and rainwater treatment technologies (including e.g. combinations of ozonation with sand and charcoal filters) the release of micropollutants and bacteria (including antibiotic-resistant bacteria) is investigated in five different test systems (three WWTPs of different size and two SOBs). Endocrinedisrupting potentials (U Frankfurt, U Stuttgart,RECETOX Brno) small WWTP (Merklingen)*
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