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Title: Low-rank coal research under the UND/DOE cooperative agreement. Quarterly technical progress report, July-September 1983

Abstract

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 lowermore » 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.« less

Authors:
Publication Date:
Research Org.:
North Dakota Univ., Grand Forks (USA). Energy Research Center
OSTI Identifier:
5496352
Report Number(s):
DOE/FE/60181-26
ON: DE84002700
DOE Contract Number:  
FC21-83FE60181
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 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, & Peat; 010800 - Coal, Lignite, & Peat- Waste Management; 014000 - Coal, Lignite, & Peat- Combustion

Citation Formats

Wiltsee, Jr., G. A. Low-rank coal research under the UND/DOE cooperative agreement. Quarterly technical progress report, July-September 1983. United States: N. p., 1983. Web. doi:10.2172/5496352.
Wiltsee, Jr., G. A. Low-rank coal research under the UND/DOE cooperative agreement. Quarterly technical progress report, July-September 1983. United States. https://doi.org/10.2172/5496352
Wiltsee, Jr., G. A. Sat . "Low-rank coal research under the UND/DOE cooperative agreement. Quarterly technical progress report, July-September 1983". United States. https://doi.org/10.2172/5496352. https://www.osti.gov/servlets/purl/5496352.
@article{osti_5496352,
title = {Low-rank coal research under the UND/DOE cooperative agreement. Quarterly technical progress report, July-September 1983},
author = {Wiltsee, Jr., G. A.},
abstractNote = {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.},
doi = {10.2172/5496352},
url = {https://www.osti.gov/biblio/5496352}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {1}
}