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Gewählte Master / Diploma Thesis:

Master / Diploma Thesis - Institut für Siedlungswasserbau, Industriewasserwirtschaft und Gewässerschutz (SIG), BOKU-Universität für Bodenkultur, pp 183. UB BOKU obvsg FullText

Data Source: ZID Abstracts
Stormwater runoff from highly trafficked areas contains several contaminants in a concentration which is higher than given critical values. Especially heavy metals and hydrocarbons are main contaminants. To protect groundwater in Austria there are filtration treatment systems with the function of cleaning stormwater runoff before percolation process. To ensure the function of these treatment plants the challenge is to develop a testing method. Requirements concerning testing criteria and experimental procedures were given by a project of the Austrian Standards Institute. The experiments should lead to a testing method in laboratory scale which ensures that the capacity of filter substrate from existing or future plants are able to be in use for a minimum of four years. The main experiments were conducted in column flow experiments in respect to test the removal of heavy metals. A testing method was created by varying the column diameter (13.4/22/32 mm), flow rate, filter substrate (technical, sand, soil), bed height (20/30 cm), influent parameters (Pb, Cr, Cu, Ni, Zn), concentration of influent (50-400 µg/l) and flow modus (upflow/downflow). Furthermore batch experiments (5 g of material and 50 ml solution of different concentrations) were performed for comparing results of both experiments. At least column experiments for testing removal of mineral oil by using toluene were operated. Best results were generated by column diameter of 32 mm, upflow modus, flow rate respectively to the coefficient of permeability and a bed height of 20 cm. A solution of Pb, Cr, Cu, Ni, Zn would be appropriate by using realistic concentrations. Batch experiments are useful to estimate the utilisation of filter substrate in general but for testing the capacity column experiments should be preferred. For mineral oil removal no appropriate surrogate was found.

Beurteilende(r): Fürhacker Maria
1.Mitwirkender: Measho Haile Tadele

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