||Hazardous emission characterization of utility boilers /
Cowherd, Jr., Chatten ;
Marcus, Mark ;
Guenther, Christine M. ;
Spigarelli., James L.
||Midwest Research Inst., Kansas City, Mo.;National Environmental Research Center, Research Triangle Park, N.C. Control Systems Lab.
|| U.S. Environmental Protection Agency, Office of Research and Development ; [Available throuth the National Technical Information Service],
||EPA-650/2-75-066; EPA-68-02-1324; EPA-ROAP-21AUZ-002
Electric power-plants--Environmental aspects. ;
Hazardous wastes. ;
Air pollution ;
Combustion products ;
Industrial wastes ;
Electric power plants ;
Trace elements ;
Inorganic nitrates ;
Polycyclic aromatic hydrocarbons ;
Fly ash ;
Gas sampling ;
||Research Triangle Park Library/RTP, NC
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||ix, 173 pages : illustrations ; 29 cm.
The report gives results of a field sampling program aimed at quantifying potentially hazardous pollutants in the waste streams of a representative coal-fired utility boiler: a 125-MW boiler (fired with pulverized coal and equipped with a mechanical fly ash collector) at TVA'S Widows Creek steam electric generating station. The combustion products identified as potentially hazardous air pollutants included 22 trace elements, nitrates, sulfates, polycyclic organic compounds, and polychlorinated biphenyls. The waste streams sampled included pulverized coal, furnace bottom ash, superheater ash, collection ash, and flue gases at the fly ash collector inlet and outlet. Acceptable mass balance was achieved for about half of the elemental pollutants. Trace metal enrichment was measured. Study results include recommended modifications of sample collection and preparation methods: larger and more frequent samples of coal and bulk ash streams are expected to improve sample representativeness; development of methodologies for estimating bulk ash flows will permit internal checks on mass balances: and routine chemical analysis of NBS standard coal and fly ash will improve quality assurance of the analytical methods.
"PB-245 017." Photocopy,