Removal of emulsified oils in graphite-ore medium

Technical Report · Fri Nov 01 04:00:00 EST 1974

OSTI ID:6329925

The efficiency of graphite ore was evaluated as a filter medium for removing free and emulsified oils from wastewaters. Specifically, the performance of filter beds varying in depth from 6 to 36 inches using crushed graphite ore, a locally available material, was investigated under laboratory conditions. Special columns 12 feet in depth were constructed for this purpose. These units were operated as gravity filters. Regular rapid filter silica sand of equivalent effective size and uniformity coefficient was used in comparing oil removal efficiencies. Three concentrations of emulsified oil (30, 60, and 120 mg/l); and four hydraulic rates (8, 12, 20, and 30 gpm/sq ft) were tested. Removal efficiency and headloss were the dependent variables. The waste-water consisted of mechanically emulsified oil. This oil was filtered slop oil obtained from a refinery. Relative oil concentrations were determined indirectly using a total organic carbon Beckman Analyzer.

• Research Organization: Texas Univ., Austin (USA). Center for Research in Water Resources
• OSTI ID: 6329925
• Report Number(s): CRWR-118; EHE-74-05; ON: DE83901432
• Country of Publication: United States
• Language: English

Related Subjects

520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
CARBON
CHEMICAL PROPERTIES
COALESCENCE
COLLOIDS
DEMULSIFICATION
DISPERSIONS
ELEMENTAL MINERALS
ELEMENTS
EMULSIONS
FILTRATION
GRAPHITE
HYDROGEN COMPOUNDS
LIQUID WASTES
MINERALS
NONMETALS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PURIFICATION
REMOVAL
SAND
SEPARATION PROCESSES
WASTE OILS
WASTE WATER
WASTES
WATER