The flotation is an efficient and economical separation principle in front of an oxidation step. The dissolved organic content (COD) can be removed as a sludge by using a suitable pump and a concentrator.
The flotation principle can be used fortunately as a PRE-STEP for the HOXON® equipment. In a lot of cases the C-contamination can be reduced by a part of 95%. Other separation technologies, like membrane technologies (NF, RO, MBR) and activated carbon adsorbers, can produce toxic concentrates, which means extremely high costs for incineration.