Process for dewatering sludge.

摘要

Sludges having a water content of less than 60% by weight are obtained by forming sludge pellets having a layer of a dewatering additive in a dry powder state mainly on surfaces of primary dewatered sludges in a disintegrating pelletizer while preventing the sludges themselves from kneading and then by compressing the sludge pellets under pressure. The sludges thus obtained are spontaneously combustible and are utilizable as a heat resource.