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DOI : ,    Vol.12, No.4, 27 ~ 35, 2004
Title
Influence of Nutrient Removal with a Separate feeding of the Anaerobic and Anoxic Tank
김홍태 Hong Tae Kim , 김경호 Kyeong Ho Kim , 오상화 Sang Hwa Oh
Abstract
This study was carried out to investigate the influence of nitrogen and phosphorus removal with a separate feeding of influent carbon source and also changes of internal recycle to Anoxic tank from final Clarifier in a Parallel Anaerobic-Anoxic tank. The study was operated with 4 phases according to the changes of influent carbon source and internal recycle. The results were concluded as follows, In all phase, Organic and NH^(+)₄-N removal efficiencies were more than 90%. Phase Ⅳ operated with influent COD concentration 290mg/L and internal recycle 30 obtained best results that the concentrations of Effluent SP and NO^(-)₃-N were 0.98mg/L and 2.62mg/L, respectively and as internal recycle increases, denitrification amounts in anoxic tank of phase Ⅳ has more than doubled in denitrification amounts in anoxic tank of phase Ⅰ.
Key Words
BNR, separate feeding, internal recycle, nitrate
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