METHOD FOR TREATING FILTER DUST, EXCAVATOR SLAVE (HARBOR SLUDGE) AND THE LIKE WASTE MATERIALS FOR FINAL DISPOSAL

摘要

Process for preparing filter dust, dredging sludge (harbour sludge) and similar waste matter for final disposal, whereby the waste matter is mixed with a cohesive matrix material, in particular clay or loam, and this mixture is treated by an addition agent which breaks down the capillarity and, by catalytic ion exchange, the hydrophilic forces of the cohesive material, the mixture produced being pressed to form moulded bodies of any desired size suitable for disposal. The addition agent used is sulphonated water-soluble oil. The cohesive material is added to the waste matter in a proportion of between 30 % and 60 % by weight with reference to the total quantity, and the addition agent is added to the mixture in a proportion of between 0.4 and 1.0 l. per ton, related to the cohesive material contained in the mixture. The moulded bodies are heat-treated at a temperature of between 400 DEG C and 1400 DEG C.