Every water treatment plant generates large quantities of sludge, which must be disposed of at great expense. There is also the fact that the sludge has to be stored and transported. This leads to odors and other problems. With a single step of our technology, the solids, bacteria and possible pathogenic substances contained in the water are eliminated. Weight and quantity decrease significantly, so that these substances can be transported more easily. Optionally, the powder can be converted into pellets and made into fertilizer: The waste is completely recycled.