Fixed-film, fluidized-bed bioreactors for biooxidation of coal conversion wastewaters. Progress report, October 1, 1984-September 30, 1985

Technical Report · Tue Apr 01 00:00:00 EST 1986

DOI:https://doi.org/10.2172/5953994· OSTI ID:5953994

Donaldson, T. L.; Strandberg, G. W.; Worden, R. M.

The technical feasibility of biooxidation treatment of 50% strength actual wastewater was successfully demonstrated using a fluidized-bed bioreactor. The wastewater was stripped to remove ammonia and sulfides prior to biotreatment. Additional experimental and modeling work confirmed the need to supply substantial oxygen to maintain high reaction rates. The reaction kinetics were shown to depend on the physical characteristics of the biofilms. Dynamic modeling and experimental studies have shown that classical reaction and diffusion concepts used in catalysis are adequate to describe the dynamic behavior of bench-scale bioreactors when the pH is constant. Oscillations in the reaction rate and phenol concentration were seen when the pH was not controlled. A status summary of the fluidized-bed bioreactor process for biooxidation of organics in coal gasification wastewaters is presented.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5953994
• Report Number(s): ORNL/TM-9806; ON: DE86010000
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
54 ENVIRONMENTAL SCIENCES
BIOREACTORS
FLUIDIZED BEDS
COAL GASIFICATION
WASTE WATER
AMMONIA
CHEMICAL REACTIONS
OXIDATION
REACTION KINETICS
SULFIDES
CHALCOGENIDES
GASIFICATION
HYDRIDES
HYDROGEN COMPOUNDS
KINETICS
LIQUID WASTES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OXYGEN COMPOUNDS
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
WASTES
WATER
010402* - Coal
Lignite
& Peat- Purification & Upgrading
520200 - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)