Theses and Dissertations
Issuing Body
Mississippi State University
Advisor
Truax, Dennis D.
Committee Member
Diaz-Ramirez, Jairo N.
Committee Member
Magbanua, Benjamin S.
Date of Degree
4-30-2011
Document Type
Graduate Thesis - Open Access
Major
Civil and Environmental Engineering
Degree Name
Master of Science
College
James Worth Bagley College of Engineering
Department
Department of Civil and Environmental Engineering
Abstract
The effects of heavy metals, endocrine disruptors, and other contaminants on activated sludge and wastewater treatment operations have been studied extensively. However, the potential for infiltration of bacterial species not native to activated sludge has not been extensively examined. This project investigated the effect of the contamination of activated sludge wastewater treatment systems by Bacillus anthracis. From a pure culture of Bacillus megaterium inoculations of two bench-scale, sequencing batch reactors with different solids retention times was studied. Microbial enumeration testing was initially done on the mixed liquor alone, but to further detail the Bacillus path through the reactor, further testing was done to examine the supernatant. The data indicated that little effect would be caused from Bacillus inoculation of activated sludge reactors as population diversity returned to normal within a period of time equal to approximately one quarter of the solids retention time.
URI
https://hdl.handle.net/11668/19334
Recommended Citation
Hoyt, Robert Frederick, "Predominance of Bacillus Anthracis in the Biological Population of an Activated Sludge Reactor" (2011). Theses and Dissertations. 3615.
https://scholarsjunction.msstate.edu/td/3615
Comments
biological contamination