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KMID : 0382420030290030059
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Korean Journal of Environmental Health Society
2003 Volume.29 No. 3 p.59 ~ p.64
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Removal of Organics and Nirtogen in Wastewater Using 2 Stage A/O(RBC) Process
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Choi Myung-Sub
Shon In-Shik
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Abstract
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This study was conducted to investigate anoxic-RBC-anoxic-RBC process and its application to remove biologically organics and nitrogen. BOD and total-nitrogen{T-N) removal efficiencies were decreased as volumetric loading rate increased. But, the removal efficiency changes of T-N were little, as compared to BOD. Increase of internal recycle rate had few affect of BOD and T-N removal rates. Also, influent allocation{to 2nd anoxic reactor) had few affect of BOD removal efficiency rate. However, when the influent allocation rate was 30%, T-N removal efficiency was increased to 84.1%. BOD/N ratio applied to 2nd anoxic reactor was increased to range of 3.65~4.37 as influent allocation rate increased to range 20-35%. But, it might also cause adverse effect such as decrease of denitrification rate in excessive influent allocation rate.
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KEYWORD
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