Two Stage Ultrafiltration for Drinking Water Treatment – Summary

Two Stage Ultrafiltration for Drinking Water Treatment–Summary

In Austria, water supply services rely almost only on ground water or spring water resources. In many cases, these water resources can be used as drinking water without any further treatment. Quite often, even without disinfection. However, occasionally occurring turbidity (spring water) or pollution by humic substances (groundwater) can be present in many of these resources.

These substances can cause potential problems within the distribution network or in relation to conventional disinfection methods (chlorine, ozone or UV). Generally, membrane filtration has been proven to retain microbiological contaminants. Since membrane filtration processes do not change the water chemistry, there is no decomposition of humic substances, and no additional substrates for enhanced microbiological aftergrowth are created.

Furthermore turbidity does not affect the performance of membrane filtration. Nevertheless, so far no membrane filtration plants are built without downstream disinfection measures. This is since the risk of an undetected integrity failure of single membrane modules or fibres. The objective of the research project is to provide evidence for the applicability of a two stage membrane concept (two-stage ultrafiltration - UF2) as an alternative treatment method. The concept shows high reliability against undetected integrity failures and thus, can be used without any downstream disinfection measures

Federal Ministry for Sustainability and Tourism
Overall coordination: R. Neunteufel - University of Natural Resources and Life Sciences Vienna
Wasserwirtschaft, Wasserpolitik Trinkwasser / Abwasser