Effects of Shock Temperature on Biological Systems
- 1 February 1975
- journal article
- Published by American Society of Civil Engineers (ASCE) in Journal of the Environmental Engineering Division
- Vol. 101 (2) , 229-243
- https://doi.org/10.1061/jeegav.0000322
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.Keywords
This publication has 0 references indexed in Scilit: