Technical Bulletin No. 0190: Manual of Practice for Sludge Handling in the Pulp and Paper Industry

The disposal of sludges obtained from the clarification of pulp and papermaking effluents is still a major problem despite many years of research, development work, field studies and applications. In fact, it is of greater magnitude than ever, not only because of increased production but due to the fact that an increasingly larger percentage of this material, formerly discharged to surface waters, is now removed from the effluents. The great progress made during the last 30 years in water recirculation and fiber and filler recovery began to make it appear as though the immemorial dream of the completely closed paper machine system would eventually come true.