Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Parabiotic Growth Characteristics of Selected Sewage Bacteria.
Author Finche, Edward L. ;
CORP Author Georgia Inst. of Tech., Atlanta. Environmental Resources Center.
Year Published 1973
Report Number ERC-0973; DI-14-31-0001-3270; OWRR-B-053-GA; B-053-GA(1),; 03203
Stock Number PB-226 769
Additional Subjects Bacteria ; Sewage ; Ecology ; Population growth ; Aerobic processes ; Models ;
Library Call Number Additional Info Location Last
NTIS  PB-226 769 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 185p
Experimental techniques were developed for use in determining the qualitative changes in the aerobic heterotrophic bacterial populations in raw domestic sewage. Mixed bacterial flora are subject to various ecological pressures such as the availability of metabolizable nutrients. Certain populations may be at a competitive disadvantage because other organisms have a more versitile metabolism which enables preferential utilization of nutritional substrate, alteration of the growth environment through production of metabolic products inhibitory to other organisms, and changes in pH and available oxygen. A raw sewage sample was selected as the model system and held under controlled laboratory conditions. The initial mixed populations emerged into homogeneous populations without overall change in the rate of dissimilation of substrate. The pH decrease seemed to be an important factor in the selection pressure.