TY - JOUR
T1 - Nitrogen removal from low carbon-to-nitrogen wastewater in four-stage biological aerated filter system
AU - Ryu, Hong Duck
AU - Kim, Daekeun
AU - Lim, Heun Eun
AU - Lee, Sang Ill
PY - 2008/7
Y1 - 2008/7
N2 - In this study, a four-stage biological aerated filter (BAF) system was proposed for the enhancement of nitrogen removal in the treatment of low carbon-to-nitrogen ratio (C/N ratio) municipal wastewater. Laboratory experiments were conducted at two different hydraulic retention times (HRTs), i.e., 3 h and 6 h. Results of the long-term operation of the BAF system showed that its overall NH4-N removal performance was stable with the removal efficiency of 95-96% on average, regardless of HRT applied. The effectiveness of the proposed BAF was observed in denitrification performance. At the total chemical oxygen demand (TCOD) to total kjeldahl nitrogen (TKN) ratio of 3:6, the effluent NO3-N concentration of denitrification column was 2.7 mg/L. It was concluded that the four-stage BAF system proposed in this study was excellent in nitrogen removal performance by employing four-column functioning as sorption, nitrification, denitrification and purification, respectively.
AB - In this study, a four-stage biological aerated filter (BAF) system was proposed for the enhancement of nitrogen removal in the treatment of low carbon-to-nitrogen ratio (C/N ratio) municipal wastewater. Laboratory experiments were conducted at two different hydraulic retention times (HRTs), i.e., 3 h and 6 h. Results of the long-term operation of the BAF system showed that its overall NH4-N removal performance was stable with the removal efficiency of 95-96% on average, regardless of HRT applied. The effectiveness of the proposed BAF was observed in denitrification performance. At the total chemical oxygen demand (TCOD) to total kjeldahl nitrogen (TKN) ratio of 3:6, the effluent NO3-N concentration of denitrification column was 2.7 mg/L. It was concluded that the four-stage BAF system proposed in this study was excellent in nitrogen removal performance by employing four-column functioning as sorption, nitrification, denitrification and purification, respectively.
KW - Biological aerated filter
KW - Denitrification
KW - Hydraulic retention time
KW - Low carbon-to-nitrogen ratio
KW - Municipal wastewater
KW - Nitrogen removal
UR - https://www.scopus.com/pages/publications/44249088769
U2 - 10.1016/j.procbio.2008.02.018
DO - 10.1016/j.procbio.2008.02.018
M3 - Article
AN - SCOPUS:44249088769
SN - 1359-5113
VL - 43
SP - 729
EP - 735
JO - Process Biochemistry
JF - Process Biochemistry
IS - 7
ER -
