University of Natural Resources and Life Sciences, Vienna (BOKU) - Research portal
Gewählte Doctoral Thesis:
Tadele Measho Haile
(2018):
Water quality characterization and treatment of stormwater runoff generated from vehicle trafficked surfaces.
Doctoral Thesis - Institut für Siedlungswasserbau, Industriewasserwirtschaft und Gewässerschutz (SIG),
BOKU-Universität für Bodenkultur,
pp 185.
UB BOKU
obvsg
FullText
- Abstract:
- Stormwater from vehicle trafficked areas contains a variety of contaminants that can adversely impact receiving waters. This dissertation investigates performance of runoff filtration systems, suitability of soil and adsorptive (technical) filter media for utilization in filtration systems, operational performance of sedimentation basin, and cytotoxic and genotoxic effects of stormwater. Results showed stormwater filtration systems that utilize technical filter media were effective in removing both particulate and dissolved pollutants. Overall, filtration systems demonstrated a robust treatment performance and requirements of the Austrian Standard (ÖNORM B 2506–3, 2016) were fulfilled. Moreover, treatment performance of a filtration system with technical filter media (Af:Ared = 1:283) was comparable to that of a soil filter (Af:Ared =1:28.3). These findings were also confirmed in a lab-scale column study. Performance of a sedimentation basin treating highway runoff was very poor in terms of particle removal and hydraulic conditions. A series of laboratory experiments were conducted using tracer in lab-scale sedimentation device. Results of tracer tests showed that installation of baffles improved flow distribution across the entire basin, decreased short-circuiting and increased hydraulic residence time which led to an increased particle removal efficiency. Finally, the cytotoxic and genotoxic effects of water and sediment samples were tested using a combination of bioassays. Effluents of filtration systems were neither cytotoxic nor genotoxic. However, the influents were partly cytotoxic indicating that the filtration systems were effective in mitigating the effects and runoff from highly frequented urban highway showed some genotoxic activities. Sediments deposited at the surface of filtration systems induced mutagenic and genotoxic effects. Results of the field investigations together with laboratory findings can be applied in future design of filtration systems.
- Betreuer: Fürhacker Maria
- 1. Berater: Loiskandl Willibald