Low-rank coal research under the UND/DOE cooperative agreement. Quarterly technical progress report, July-September 1983
Two long gasification tests were accomplished (66 and 72 hours of slagging operation) this quarter, and the balance of the wastewater needed for the second cooling tower (CT) test (approx. 11,000 gallons) was generated. Eleven thousand gallons of slagging fixed-bed gasifier (SFBG) wastewater were solvent extracted and ammonia stripped (AS) to nominal levels of 160 mg/1 phenol and 600 mg/1 NH/sub 3/. This wastewater is being further treated by activated sludge (AS) and granular activated carbon (GAC) processing to prepare a high quality makeup for the second CT test. Phenol mass balances indicated that > 90 pct of the phenol was stripped from the tower, indicating that previous assumptions of high levels of biodegradation were erroneous. Over 80 pct of the ammonia and about 25 pct of the methanol were also stripped. Data collected during steady state operation of the bench-scale rotating biological contractor indicate complete removal of phenolics and alcohols, and 94 pct removal of BOD. Nitrification also occurred in this unit, with over 30 pct removal of ammonia. Problems due to individual bacteria, present in the biotreated wastewater, passing through the multi-media filter and thus decreasing the carbon adsorption efficiency of the GAC system, have resulted in lower treatment rates than originally anticipated. As a result, to achieve the desired treatment, the contact time of the wastewater with the carbon in the granular activated carbon system has been increased. Since this has decreased the treatment rate, a larger carbon adsorption system has been designed and is presently being constructed.
- Research Organization:
- North Dakota Univ., Grand Forks (USA). Energy Research Center
- DOE Contract Number:
- FC21-83FE60181
- OSTI ID:
- 5496352
- Report Number(s):
- DOE/FE/60181-26; ON: DE84002700
- Resource Relation:
- Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ACTIVATED SLUDGE PROCESS
ASHES
LEACHING
COAL
FLUIDIZED-BED COMBUSTION
RESEARCH PROGRAMS
THERMAL GRAVIMETRIC ANALYSIS
COAL GASIFICATION PLANTS
WASTE WATER
COAL LIQUEFACTION
CATALYSTS
COAL LIQUIDS
CHEMICAL COMPOSITION
SOLVENT EXTRACTION
FUEL SLURRIES
HYDROGEN PRODUCTION
LEACHATES
SLAGS
VISCOSITY
SUPERCRITICAL GAS EXTRACTION
BIODEGRADATION
FILTRATION
WATER TREATMENT
ACTIVATED CARBON
AIR POLLUTION CONTROL
ALCOHOLS
COAL FINES
COAL PREPARATION
COAL RANK
COMBUSTION
COOLING TOWERS
DEVOLATILIZATION
DRYING
EXPERIMENTAL DATA
FABRIC FILTERS
LIGNITE
MATERIAL BALANCE
MIXTURES
NITROGEN OXIDES
PARTICULATES
PERFORMANCE
PHENOLS
PYROLYSIS
SULFUR OXIDES
TEMPERATURE DEPENDENCE
WATER
ADSORBENTS
AROMATICS
BROWN COAL
CARBON
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CONTROL
DATA
DECOMPOSITION
DISPERSIONS
DISSOLUTION
ELEMENTS
ENERGY SOURCES
EXTRACTION
FILTERS
FLUIDS
FOSSIL FUELS
FUELS
GRAVIMETRIC ANALYSIS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INDUSTRIAL PLANTS
INFORMATION
LIQUEFACTION
LIQUID WASTES
LIQUIDS
MANAGEMENT
MATERIALS
MECHANICAL STRUCTURES
NITROGEN COMPOUNDS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLES
POLLUTION CONTROL
PROCESSING
QUANTITATIVE CHEMICAL ANALYSIS
RESIDUES
SEPARATION PROCESSES
SLURRIES
SOLUTIONS
SULFUR COMPOUNDS
SUSPENSIONS
THERMAL ANALYSIS
THERMOCHEMICAL PROCESSES
TOWERS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
010000* - Coal
Lignite
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010800 - Coal
Lignite
& Peat- Waste Management
014000 - Coal
Lignite
& Peat- Combustion