The Evolution of Sludge Thickening Practice

by Robert W. Okey, CRM Inc, United States,

Document Type: Proceeding Paper

Part of: Environmental Engineering


An analysis of contemporary thickening practice is presented with a brief review of the genesis of each type of thickening. A summary of thickening capital and operating costs for three treatment plant sizes (320, 3,200 and 16,000 kg of waste activated sludge/day) is included. The work also contains an appraisal of the possible effects of new sludge management regulations on thickening practice. Higher incineration temperature requirements may demand that thickening and dewatering operations produce a fuel with a higher caloric value.

Subject Headings: Sludge | Benefit cost ratios | Incineration | Waste treatment | Asset management | Activated sludge | Laws and regulations | Dewatering

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