Halbtechnische Untersuchungen von Verfahrenskombinationen Membrantechnik/Sorption zur Aufbereitung von Elbuferfiltrat Abschlussbericht

Because of the relatively high content of organic matter in the water of the river Elbe it is not possible to transform in a simple way processes for the drinking water treatment which have been developed to treat water of the river Rhein. Especially activated carbon filtration will be much more expensive due to competitive adsorption processes. Furthermore, the bank filtrate is mixed with ground water which contains a high amount of hardness and sulfate. Therefore nanofiltration and ultrafiltration was investigated as a economically competitive alternative. One of the main subjects was the investigation of the rejection of trace organics like pesticides by nanofiltration and the reduction of desinfection by-products. Because of restrictions of concentrate disposal the treatment of the NF-concentrate by activated carbon, by making use of the high concentration and the small volume flow of the concentrate, was investigated. An evaluation of economic efficiency showed that the nanofiltration process could be competitive if it is possible to substitute several conventional treatment steps like activated carbon filtration and conventional softening. (orig.)SIGLEAvailable from TIB Hannover: F97B1720+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany); Deutscher Verein des Gas- und Wasserfaches e.V., Bonn (Germany)DEGerman