method and plant for the treatment of sewage sludge to landfill.

摘要

The problem in the use of sewage sludge for landfilling is to achieve sufficient solidity of the sewage sludge after incorporation. It is known for this purpose to add binders to the dewatered sewage sludge. However, this leads to an unwanted increase in volume. It is furthermore known to mix dewatered and dry sewage sludge, and to structure and subsequently to compost the mixture. However, this leads to great technical elaboration of the plant. The invention is intended to make possible treatment of the sewage sludge for landfilling with little technical elaboration of the plant. At the same time the volume is intended to be low and the solidity after incorporation sufficiently high. Sewage sludge which can be used for landfilling is produced by mixing dried and dewatered sewage sludge, the mixture being produced from a coarse fraction of sewage sludge dried with granulation and from dewatered sewage sludge with a DM content of 65 to 88%.