Untersuchungen zur Abwasserversickerung

This article summarises the main bases and results of a three-year research project carried out at three sewage treatment works situated in the "See-winkel" area on Lake Neusiedl, investigating what repercussions the percolation of treated waste water has on the quality of groundwater. Boron and other substances contained in the water proved particularly suited to identify affected groundwater areas. Apart from chemical parameters as e.g. residual DOC pollution, microbial pollution was recognised as being a particularly critical parameter. The principal result obtained from the project was the possibility of devising a procedure for the planning, authorisation, and supervision of sewage treatment plants using percolation, capable of being used as important know-how also by Austrian companies working abroad.