Producing drinking water from raw waters like river bank filtrate nowadays requires the
safe removal of ever new emerging organic substances. At present, in Germany perfluorinated
organic compounds are heavily discussed. When it comes to trace organics removal, reverse
osmosis (RO) and nanofiltration (NF) are alternatives to conventional bank filtrate treatment
technologies like ozonation and activated carbon adsorption. However, the retention
performance and trace organics removal monitoring of dense membranes are still under
investigation. Questions about concentrate disposal strategies are still open. The paper presents
results from lab-scale and pilot studies which were conducted for the project planning of a 1,100
m<sup>3</sip>/h NF plant treating river Rhine bank filtrate. Membranes from loose NF to dense RO were
investigated spiking the raw waters with trace organic substances which usually pass the soil
passage and to some extent even the conventional treatment process. The results showed high
retention capabilities of the more dense membranes, even under ageing conditions. Includes 7 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 4.9 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 11 |
| Published : | 03/01/2007 |
