Process and apparatus for purifying polluted water and for producing drinking water or utility water

摘要

In the water purification process, a filter packing (7) is used which is elastically and easily compressible and returns to its original shape. For this purpose ground plastic foam is suitable having a particle size from 0.1 to 75 mm which can be easily regenerated. Filtration is performed from bottom to top in an apparatus having a vessel (33) and regeneration is performed from top to bottom. During the filtration, the filter packing (7) acts as a bed filter. If the pores are blocked, the filter packing charge is loosened by interrupting the water feed. After loosening, the filter packing is regenerated from top to bottom by discharging the liquid from the filter chamber (6). <IMAGE>