TY - JOUR
T1 - Advanced nitroge removal and kinetics for low carbon to nitrogen ratio sewage by SND in an integrated reactor
AU - Deng, Shihai
AU - Li, Desheng
AU - Yang, Xue
AU - Lu, Yangyang
AU - Zhu, Shanbin
N1 - Publisher Copyright:
© 2016, Journal Northern Jiaotong University. All right reserved.
PY - 2016/2/1
Y1 - 2016/2/1
N2 - Nitrogen removal and transformation for low carbon to nitrogen (C/N) ratio by SND in an integrated reactor were studied and analyzed. Results showed that total nitrogen (TN) and ammonia were decreased to 3.4 mg/L and 2.5 mg/L from 20±2 mg/L and 15±2 mg/L, respectively, at the conditions of DO=1.4-1.7 mg/L, HRT=18 h (7.2 h in the first reaction zone), C/N=5.Long-running experiment showed that TN and ammonia in effluent were stabilized in 1.4-4.7 mg/L and 0.8-3.0 mg/L and the removal rate were in 80.2%-94.9% and 76.5%-93.2%, respectively. KNH+4-N=1.34 mg/L, KNO-3-N=0.71 mg/L and n=0.6224 were obtained by simultaneous nitrification and denitrification (SND) dynamic model solving. The results indicated that nitrogen in low C/N ratio wastewater could be efficiently removed by SND system in the integrated reactor and the SND system was of operation stability and the ability to resist shock loading. The proposed technology was applicable for advanced nitrogen removal of low C/N ratio small discharge from small town.
AB - Nitrogen removal and transformation for low carbon to nitrogen (C/N) ratio by SND in an integrated reactor were studied and analyzed. Results showed that total nitrogen (TN) and ammonia were decreased to 3.4 mg/L and 2.5 mg/L from 20±2 mg/L and 15±2 mg/L, respectively, at the conditions of DO=1.4-1.7 mg/L, HRT=18 h (7.2 h in the first reaction zone), C/N=5.Long-running experiment showed that TN and ammonia in effluent were stabilized in 1.4-4.7 mg/L and 0.8-3.0 mg/L and the removal rate were in 80.2%-94.9% and 76.5%-93.2%, respectively. KNH+4-N=1.34 mg/L, KNO-3-N=0.71 mg/L and n=0.6224 were obtained by simultaneous nitrification and denitrification (SND) dynamic model solving. The results indicated that nitrogen in low C/N ratio wastewater could be efficiently removed by SND system in the integrated reactor and the SND system was of operation stability and the ability to resist shock loading. The proposed technology was applicable for advanced nitrogen removal of low C/N ratio small discharge from small town.
KW - Deep denitrogen
KW - Integrated reactor
KW - Low carbon to nitrogen ratio sewage
KW - Municipal engineering
KW - Simultaneous nitrification and denitrification
UR - https://www.scopus.com/pages/publications/84963507369
U2 - 10.11860/j.issn.1673-0291.2016.01.008
DO - 10.11860/j.issn.1673-0291.2016.01.008
M3 - 文章
AN - SCOPUS:84963507369
SN - 1673-0291
VL - 40
SP - 49
EP - 55
JO - Beijing Jiaotong Daxue Xuebao/Journal of Beijing Jiaotong University
JF - Beijing Jiaotong Daxue Xuebao/Journal of Beijing Jiaotong University
IS - 1
ER -