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Applicability Study of Reactor Design in Sewage Treatment Plant using Specific Oxygen Uptake Rate  

Joo, Hyun Jong (Department of Environmental Energy System Engineering, Kyonggi University)
Kim, Sung Chul (Department of Environmental Energy System Engineering, Kyonggi University)
Lee, Kwang Hyun (Department of Environmental Energy System Engineering, Kyonggi University)
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Abstract
In existing design method for aeration tank water temperature was considered as governing variable for applying safety factor. This study tried a few new approach of aeration tank design using SOUR at various temperature conditions. Specific substrate utilization rate (U) and specific oxygen uptake rate (SOUR) both were analyzed at various temperature and SRT. The laboratory scale reactor was operated on various temperature ($10^{\circ}C$, $20^{\circ}C$, $25^{\circ}C$) and SRT (5day, 10day, 20day, 30day). In this study, SOUR tended to increase with the temperature increased. On the other hand, SOUR tended to decrease when SRT increased from 5 days to 30 days. Empirical equations were obtained SOUR=a/SRT+b and $SOUR=(a/m){\cdot}U+(b-a(n/m))$ from the relationship between SRT, U and SOUR. Empirical equations shows the possibility as a new design method for the aeration basin.
Keywords
Empirical equation; Solid retention time; Specific oxygen uptake rate; Specific substrate utilization rate; Temperature;
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Times Cited By KSCI : 1  (Citation Analysis)
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