Treatment of refinery wastewaters using various modified activated sludge processes

Thesis/Dissertation · Thu Jan 01 00:00:00 EST 1987

OSTI ID:6711151

Al-Muzaini, S M

Biological processes for treating refinery industry wastewater for reuse were studied. A pilot-scale biological reactor was constructed to simulate the activated sludge treatment process. Actual refinery industry wastewater collected from a regional refinery and spiked with additions of selected priority organics was fed at a rate of 1.3 liters/hour into a 6-liter pilot plant having a hydraulic retention time of 4 hours. Activated sludge (AS) which was augmented by additions of powdered activated carbon (PAC) at dosages of 10, 50 and 120 mg/l was evaluated. The AS process removed 70-80% of the BOD, COD and TOC. With the addition of PAC, removal efficiencies of the indicator compounds rose to 80-95%. The sludge physical parameters and kinetic constants were determined with and without the addition of PAC to the AS. PAC additions to the AS increased the amount of biomass in the reactor. Volatile compounds (benzene, chloroform, ethylbenzene, toluene, m-xylene and o-xylene) were removed from the reactor by volatilization which occurred from air stripping. PAC alone (without AS) was primarily responsible for removing base and acid/neutral-extractable compounds (2,4-dimethylphenol, fluorene, naphthalene and pyrene).

• Research Organization: Rhode Island Univ., Kingston (USA)
• OSTI ID: 6711151
• Resource Relation: Other Information: Thesis (Ph. D.)
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
ACTIVATED SLUDGE PROCESS
MODIFICATIONS
PETROLEUM REFINERIES
WASTE WATER
WATER TREATMENT
ACTIVATED CARBON
AIR
BENZENE
CHEMICAL OXYGEN DEMAND
CHLOROFORM
EFFICIENCY
FLUORENE
NAPHTHALENE
ORGANIC MATTER
PERFORMANCE TESTING
PHENOLS
PILOT PLANTS
PYRENE
REMOVAL
TOLUENE
WATER TREATMENT PLANTS
XYLENES
ADSORBENTS
ALKYLATED AROMATICS
AROMATICS
CARBON
CHLORINATED ALIPHATIC HYDROCARBONS
CONDENSED AROMATICS
ELEMENTS
FLUIDS
FUNCTIONAL MODELS
GASES
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INDUSTRIAL PLANTS
LIQUID WASTES
MANAGEMENT
NONMETALS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
PROCESSING
TESTING
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
WATER
020800* - Petroleum- Waste Management