Author(s): Christian Hasenleithner; Albert Brugger
Linked Author(s):
Keywords: Seepage rate; Bank filtrat; Ground water; Water quality; Water supply; Drinking water
Abstract: International research has been busy trying to find out large-scale changes of the water quality in connection with the seepage rate. It was found out that the biggest change of the water quality happens in the first few meters of the filtration. The experience of water suppliers confirms this aspect. The changes occurring in this section and the simultaneous decomposition processes have up to now only been examined in its basic form, what has lead to the project which is described here. Experiences along the river Enns show that the already given proof concerning the functioning of a natural filtration has to include the aspect of location and process of decomposition and the stability of these processes throughout the year. Otherwise the regularly emerging questions about the safety of the water supply from filtrates in riparian areas cannot be answered with scientific proof. Therefore a special infrastructure to investigate the upper sediment layer had to be developed. With the help of monitoring stations at the bank of the river the quality development is pictured in hydraulic profiles, especially in the most active upper sediment layer (0-1. 5m).
Year: 1999