Fine-coal-aided centrifugal dewatering of waste activated sludge
Journal Article
·
· J. - Water Pollut. Control Fed.; (United States)
OSTI ID:5902877
When waste activated sludge is dewatered for disposal by combustion, the final product concentration is of the utmost importance. Tests carried out using a new slow-speed, co-current flow solid bowl conveyor centrifuge showed that cake solids concentrations of 18-23% total solids could be achieved on a waste activated sludge feed using polymers. With fine coal addition, cake solids concentrations of 25-37% total solids were obtained with 0.1-0.3 kg coal/kg sludge solids. Depending on the operating exhaust temperatures of the furnace, autogenous conditions can be produced with coal additions of 0.05-0.2 kg coal/kg sludge. Fine coal addition to centrifuges produces much better final product concentrations than ash or coal additions to vacuum filters or filter presses.
- OSTI ID:
- 5902877
- Journal Information:
- J. - Water Pollut. Control Fed.; (United States), Journal Name: J. - Water Pollut. Control Fed.; (United States) Vol. 55:2; ISSN JWPFA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
320604 -- Energy Conservation
Consumption
& Utilization-- Municipalities & Community Systems-- Municipal Waste Management-- (1980-)
ACTIVATED SLUDGE PROCESS
ADDITIVES
CENTRIFUGES
CHEMICAL REACTIONS
COAL FINES
COMBUSTION
CONCENTRATORS
MANAGEMENT
OXIDATION
PERFORMANCE TESTING
POLYMERS
PROCESSING
REMOVAL
SLUDGES
TESTING
THERMOCHEMICAL PROCESSES
USES
WASTE DISPOSAL
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
WATER REMOVAL
010800* -- Coal
Lignite
& Peat-- Waste Management
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
320604 -- Energy Conservation
Consumption
& Utilization-- Municipalities & Community Systems-- Municipal Waste Management-- (1980-)
ACTIVATED SLUDGE PROCESS
ADDITIVES
CENTRIFUGES
CHEMICAL REACTIONS
COAL FINES
COMBUSTION
CONCENTRATORS
MANAGEMENT
OXIDATION
PERFORMANCE TESTING
POLYMERS
PROCESSING
REMOVAL
SLUDGES
TESTING
THERMOCHEMICAL PROCESSES
USES
WASTE DISPOSAL
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
WATER REMOVAL