Record Display for the EPA National Library Catalog


Main Title Rotating disc biological treatment of acid mine drainage /
Author Olem, Harvey,
Other Authors
Author Title of a Work
Unz, Richard F.,
CORP Author Pennsylvania State Univ., University Park.;Industrial Environmental Research Lab., Cincinnati, OH.
Publisher Industrial Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1980
Report Number EPA 600-7-80-006; EPA-R-805132
Stock Number PB80-137219
OCLC Number 06364151
Subjects Acid mine drainage. ; Sewage--Purification--Biological treatment.
Additional Subjects Bacteria ; Coal mines ; Cost comparison ; Iron ; Oxidation ; Treatment ; Water pollution control ; Acid mine drainage
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJAD  EPA 600/7-80-006 Region 3 Library/Philadelphia, PA 04/11/1997 DISPERSAL
EJBD ARCHIVE EPA 600-7-80-006 Headquarters Library/Washington,DC 04/29/2016
EJED  EPA 600-7-80-006 OCSPP Chemical Library/Washington,DC 06/17/2019
EMBD  EPA/600/7-80/006 NRMRL/GWERD Library/Ada,OK 09/29/1995
ERAD  EPA 600/7-80-006 Region 9 Library/San Francisco,CA 02/19/2013
ESAD  EPA 600-7-80-006 2 copies Region 10 Library/Seattle,WA 06/01/2016
NTIS  PB80-137219 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xv, 115 pages : illustrations ; 28 cm.
Pilot scale (0.5-m diameter) and prototype (2.0-m diameter) rotating biological contactors (RBC) were investigated for oxidation of ferrous Fe(II) iron contained in six heterogeneous mine waters located at three coal mining sites in Pennsylvania and West Virginia. Continuous biological oxidation of Fe(II) and Fe(III) was accomplished at natural mine water temperatures as low as 0.4C at Hawk Run, PA. and as high as 29C at Crown, WV. Reduction of Fe(II) oxidation efficiency at 0.4C amounted to 10 to 20 percent of that achieved at 10C. Oxidation efficiency was above 80 percent at mine water temperatures of 10 to 29C. Microbiological oxidation with the 0.5-m RBC was unaffected at influent mine water pH values in the range of 2.18 to 5.50 (Crown, WV.). Fe(II) oxidation was an average 10 percent less efficient for a mine water treated under similar operating conditions with the 2.0-m than with the 0.5-m RBC. The observed decrease may be due to nonmicrobiological factors such as increased short-circuiting, lower residence time, and a smaller effective surface area which may be increased through proper design. Costs for Fe(II) oxidation with the RBC were estimated to be about twice the amortized capital costs and one-half the operating costs compared to a conventional chemical oxidation process. Neutralization of RBC effluent and separation of precipitated iron solids is required to produce water of suitable quality for stream-release. Both iron-oxidizing and heterotrophic bacteria existed in a gelatinous matrix present on disc surfaces of RBC units operating at Hollywood, PA.
"EPA 600-7-80-006." "January 1980." Cover title. "Project Officer Roger C. Wilmoth, Resource Extraction and Handling Division." Includes bibliographical references (pages 91-96). "Grant No. R-805132."