Characteristics of stabilized scrubber sludges

Journal Article · Tue Aug 01 04:00:00 EDT 1978 · J. Environ. Eng. Div., ASCE; (United States)

OSTI ID:5569042

Chu, T J; Chen, D Y; Weeter, D W; Marks, B D; Ruane, R J

Flyash, lime, and silica were added to sludge from a lime scrubbing process to improve handling and stabilization of the sludge for disposal. Addition of flyash did not improve the initial settling velocity of the sludge. Total filter yields and true filter yields were improved partly by addition of flyash. Lime scrubber sludge was stabilized by adding: lime and flyash; or lime, flyash, and silica. The resulting strength is similar to that of overconsolidated clays. New gel or crystal formation was observed in stabilized sludges, and could be responsible for the gain in sludge strength. Fixation of sludge reduced permeability and retarded the mobility of arsenic, boron, calcium, chloride, and other compounds. Lattice complexes formed may help to prevent leaching of these substances. Fixation did not significantly retard mobility of aluminum, cadmium, COD, chromium, copper, lead, phosphate, and other elements. (9 graphs, 3 photos, 17 references, 6 tables)

• Research Organization: TVA
• OSTI ID: 5569042
• Journal Information: J. Environ. Eng. Div., ASCE; (United States), Journal Name: J. Environ. Eng. Div., ASCE; (United States) Vol. 104:4; ISSN JEEGA
• Country of Publication: United States
• Language: English

Related Subjects

520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOL WASTES
ALKALINE EARTH METALS
ALUMINIUM
ARSENIC
BORON
CADMIUM
CALCIUM
CHALCOGENIDES
CHLORIDES
CHLORINE COMPOUNDS
CHROMIUM
COPPER
DISSOLUTION
ELEMENTS
ENVIRONMENTAL IMPACTS
EQUIPMENT
FLY ASH
HALIDES
HALOGEN COMPOUNDS
LEACHING
LEAD
METALS
MINERALS
OXIDES
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
SCRUBBERS
SEMIMETALS
SEPARATION PROCESSES
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SLUDGES
TRANSITION ELEMENTS
WASTES