Technical Bulletin No. 0293: A Laboratory Investigation of Heat Treatment for Pulp and Paper Mill Sludge Conditioning

The broader application of high rate biological treatment and technology proposed to reduce suspended solids from other forms of biological treatment will broaden the range of sludges requiring disposal to those of physical/chemical origin. Hydrous sludges associated with primary treatment from some operations such as ground wood manufacture, and those resulting from other manufacturing operations in which the longer fiber has been salvaged, will continue to pose de-watering problems. Those developing situations which limit the use of land disposal as a method of disposition further accentuate the problem of hydrous sludge disposal and point to the increasing need for mechanical sludge dewatering of these slurries.