METHOD FOR TREATING A CLEANING SLUDGE DRAINED TO A DICK SLUDGE

摘要

The invention relates to a process and an installation for treating thickened sewage sludge which is mixed (1) with a dried sewage sludge to give an intermediate water content between 55 and 70 % and is dried (2) to a final moisture content of more than 80 % of dry matter. The dried sludge is withdrawn from the dryer as fine granules at a temperature between 100 DEG C and 135 DEG C, cooled (6) to a temperature below 90 DEG C and then compacted (8). IMAGE