Research Article
Feb 1975
Effects of Shock Temperature on Biological Systems
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VIEW THE REPLYAuthors: John L. Carter, M.ASCE, and William F. BarryAuthor Affiliations
Publication: Journal of the Environmental Engineering Division
Volume 101, Issue 2
Abstract
The BOD, COD, and oxygen uptake data were used to evaluate equilibrium and shock temperature studies on 35°C and 50°C activated sludge systems. The BOD removals of 96% or greater were obtained for the control units. Similar oxygen uptake rates were found for both controls; however, more oxygen was required at 50°C and a slower rate of COD removal was observed. Decreased removal efficiencies occurred when shock temperatures passed through 45°C, the thermophilic-mesophilic crossover point. The commonly used assumption that rates of reaction double, or halve for every 10? temperature increase, or decrease was not valid.
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Published In
Journal of the Environmental Engineering Division
Volume 101 • Issue 2 • February 1975
Pages: 229 - 243
Copyright
© 1975 American Society of Civil Engineers.
History
Published in print: Feb 1975
Published online: Feb 11, 2021
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John L. Carter, M.ASCE
Assoc. Prof., Dept. of Civ. Engrg., Michigan Technological Univ., Houghton, Mich.
William F. Barry
Grad. Student, Dept. of Civ. Engrg., Iowa State Univ., Ames, Iowa
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