Dewatering of flue gas desulfurization sulfite solids
The dewatering capabilities of sulfite sludges from flue gas desulfurization facilities are substantially improved by the addition of relatively small amounts of sodium thiosulfate additive, or additives derived from or related to sodium thiosulfate, into the scrubber slurry liquor. As an added embellishment, these predetermined amounts of said additives are greater than those required for effecting substantial scale inhibition in the scrubber innards. Subsequently, conventional dewatering of the sulfite sludge to about 80 to 90 percent solids directly produces a waste product disposable in both an economically and an environmentally acceptable manner, in that the thixotropic characteristics of such sludges which are associated therewith upwards to about 70 percent solids therein are completely eliminated.
- Assignee:
- Tennessee Valley Authority
- Patent Number(s):
- US 4454101
- OSTI ID:
- 6309115
- Resource Relation:
- Patent File Date: Filed date 29 Jun 1983; Other Information: PAT-APPL-508969
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
FLUE GAS
DESULFURIZATION
SCRUBBERS
SCALE CONTROL
SULFITES
SCRUBBING
WASTE DISPOSAL
ADDITIVES
ANTIFOULANTS
CATALYTIC EFFECTS
ENVIRONMENTAL IMPACTS
EVAPORATION
SLUDGES
SODIUM SULFATES
WATER REMOVAL
ALKALI METAL COMPOUNDS
CHEMICAL REACTIONS
CONTROL
EQUIPMENT
GASEOUS WASTES
MANAGEMENT
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
POLLUTION CONTROL EQUIPMENT
REMOVAL
SODIUM COMPOUNDS
SULFATES
SULFUR COMPOUNDS
WASTE MANAGEMENT
WASTES
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)