OPERATING EXPERIENCES WITH AN ANAEROBIC F LUIDIZED-BED REACTOR FOR THE TREATMENT OF SUGAR FACTORY WASTE-WATER

The Clauen sugar factory of Zuckerverbund Nord installed a new waste w ater treatment system for the 1995 campaign. For the first time in the sugar industry, a fluidized-bed system was employed for the treatment of highly charged waste water, which had been developed in several st ages from laboratory to 10m(3)-scale by the Braunschweig Sugar Institu te and built by Braunschweigische Maschinen-bauanstalt (BMA). After ab out 200 days of operation (two crops and a between-season waste water campaign), the reactor was completely emptied, in order to be able to examine its overall condition. This offers the opportunity for a closi ng assessment of the system, which summarizes the experiences to date.