Masters Theses


"Population growth in the U.S. and abroad has led to a need for increased treatment of wastewater to limit the effects of additional pollution loadings on bodies of water. Additionally, this need is complicated by limitation on energy inputs. The solution is treatment reactors that are robust, simple to operate, effective in treatment, and energy efficient. This research will compare a traditional membrane bioreactor configuration with a design meant to address these issues.

The proposed configuration used differences in hydraulic head to move liquor from a pre-anoxic zone to the aerobic zone and return a portion of it to the pre-anoxic zone for biological denitrification. The benefits of this design were suspected to be increased nitrogen removal while minimizing energy inputs. This unique configuration consisted of one blower, pumps to induce pressure differentials for membrane operation, and a single mechanical mixer for mixing the anoxic zone and providing hydraulic lift.

Complete data sets for both reactors are presented, and the results from the reactors are compared using data that coincides with operation over the same dates (i.e., summer of 2009 and 2010). Efficacy of the reactors is judged based on their mass and volumetric removal rates. This research resulted in a potentially viable reactor design that increases nitrogen removal over a conventional MBR while reducing the number of pumps needed for operation"--Abstract, page iii.


Fitch, Mark W.

Committee Member(s)

Burken, Joel G. (Joel Gerard)
Wang, Jianmin


Civil, Architectural and Environmental Engineering

Degree Name

M.S. in Environmental Engineering


Accompanying material "contains the Excel documents with data and calculations for the MBR and bMBR".


Missouri University of Science and Technology

Publication Date

Fall 2012


xi, 128 pages

Note about bibliography

Includes bibliographical references.


© 2012 Timothy Harrison Canter, All rights reserved.

Document Type

Thesis - Open Access

File Type




Subject Headings

Membrane reactors
Sewage -- Purification -- Nitrogen removal
Bioreactors -- Design

Thesis Number

T 9808

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Electronic OCLC #