Title page for ETD etd-06102012-040141

Type of Document Master's Thesis
Author Stallard, Warren Michael
URN etd-06102012-040141
Title A comparison of oxygen utilization determination techniques for the activated sludge process.
Degree Master of Science
Department Sanitary Engineering
Advisory Committee
Advisor Name Title
Randall, Clifford W. Committee Chair
King, Paul H. Committee Member
Sherrard, Joseph H. Committee Member
  • wastes
  • oxygen utilization
Date of Defense 1976-09-15
Availability restricted
Evaluation of the data from the series of batch experiments has led

to the following conclusions:

l. Currently used methods of quantifying oxygen uptake rate,

especially for batch reactors, yield values of oxygen

utilization considerably lower than those predicted by

mass balance considerations for these three wastes. In

the face of Blok's published data indicating much better

results with a short run reactor, it must be assumed

that the length of run selected was at least partially


2. While quantitatively unsatisfactory, the methods for

determining oxygen uptake used in these experiments

seem to be of some use as monitors of biological

systems. Changes in slope of the oxygen utilization

curve were found to be more apparent at lower loadings.

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