Biokinetic study for SRC-I wastewater
Biooxidation is an important part of the overall wastewater treatment system for the proposed SRC-I Demonstration Plant in Newman, Kentucky. After the completion of a Baseline Design for the plant in April 1982, various refinements were evaluated. One of these was the inclusion of a process for phenol recovery from four sour-water streams. As part of this evaluation, an extensive laboratory treatability study was conducted on wastewaters both with and without this phenol recovery step. The purpose of the study was to compare the results of different treatment schemes on different wastewaters and did not include the development of the kinetic coefficients that govern the biooxidation process. Additional treatability testing documented herein, has been performed to establish the kinetic coefficients for biooxidation of the SRC-I wastewaters. This will provide a rational basis for any subsequent changes in design. The wastewater feed used in this study was process recycle water from the Fort Lewis, Washington, pilot plant. Prior to biooxidation, it was pretreated by solvent extraction for removal of phenolics and by steam stripping for removal of ammonia and hydrogen sulfide. Two, 2-stage bench scale bioreactors were operated for approximately eight months, during which time they were stabilized at various steady-state conditions. Kinetic coefficients were evaluated according to the Lawrence and McCarty model, based on BOD, COD, and TOC. Nitrification, oxygen utilization, and solids settling velocities were also studied. The results showed that BOD is a poor basis for the model mainly because almost all BOD/sub 5/ was removed at all steady-state conditions. Also, the model was more accurate for steady-state conditions of lower solids retention times. The bulk of both organic and ammonia reductions occurred in the first stage reactors.
- Research Organization:
- Catalytic, Inc., Philadelphia, PA (USA)
- DOE Contract Number:
- AC05-78OR03054
- OSTI ID:
- 7089999
- Report Number(s):
- DOE/OR/03054-107; ON: DE84013780
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
AMMONIA
AROMATICS
BIOREACTORS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COAL LIQUEFACTION
DATA
DATA ANALYSIS
DEMONSTRATION PLANTS
DENITRIFICATION
DEPHENOLIZATION
EXPERIMENTAL DATA
EXTRACTION
HYDRIDES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
HYDROXY COMPOUNDS
INFORMATION
KINETICS
LIQUEFACTION
LIQUID WASTES
MATHEMATICAL MODELS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PERFORMANCE TESTING
PHENOLS
REMOVAL
SEPARATION PROCESSES
SOLVENT EXTRACTION
SRC PROCESS
STEADY-STATE CONDITIONS
SULFIDES
SULFUR COMPOUNDS
TESTING
THERMOCHEMICAL PROCESSES
TIME DEPENDENCE
WASTE WATER
WASTES
WATER
WATER TREATMENT