ABSTRACT
WHEN looking for magnetic technology-based processes for the treatment of water and sewage in conventional scientific literature, efforts often meet with no success. In most cases, only the simple example of the removal of the finest metal particles from the wastewaters of steel and iron industries is found. This reflects the fact that magnetic technol ogies have not yet found wide application in spite of their advantages. The few established fields of use include the removal of corrosion products from the condensate circuit of power plants and, in particular, of nuclear power plants [1], the separation of the finest metal parti cles from the wastewaters of steel and iron industries [2] as well as the protection of products and production facilities against the accidental introduction of metal particles. In addition, a number of applications have been implemented on the technical scale, although they have not yet been generally accepted on the market. This holds true for the removal of phosphate from municipal sewage [3], the so-called Sirofloc process for the processing of surface wa ters [4], and the separation of precipitated heavy metal compounds by high-gradient mag netic separation [5|.
