TY - JOUR
T1 - Effect of supplementary carbon addition in the treatment of low C/N high-technology industrial wastewater by MBR
AU - Kumar, Mathava
AU - Lee, Pei Yun
AU - Fukusihma, Toshikazu
AU - Whang, Liang Ming
AU - Lin, Jih-Gaw
PY - 2012/6/1
Y1 - 2012/6/1
N2 - The effect of supplementary carbon addition for the treatment of high-technology industrial wastewater in a membrane bioreactor (MBR) was investigated. The MBR was operated for 302days under different C/N (BODL/NH4+-N) ratios, i.e. 0.9-1 to 20days, 1.6-21 to 42days, 2.9-43 to 82days, 3.6-83 to 141days, 4.8-165 to 233days and 9.3-240 to 302days. Irrespective of the C/N ratios investigated, SS and BOD 5 removal efficiencies were above 95% and above 80% COD removal efficiency was observed. In addition, complete nitrification was observed throughout the investigation. However, denitrification and total nitrogen removal efficiencies reached their maximum values at the highest C/N ratio (9.3) investigated. Real-time PCR analysis revealed 10times higher ammonia oxidizing bacteria to total bacteria ratio under the highest C/N ratio condition (9.3) compared to the low C/N ratio condition (1.6).
AB - The effect of supplementary carbon addition for the treatment of high-technology industrial wastewater in a membrane bioreactor (MBR) was investigated. The MBR was operated for 302days under different C/N (BODL/NH4+-N) ratios, i.e. 0.9-1 to 20days, 1.6-21 to 42days, 2.9-43 to 82days, 3.6-83 to 141days, 4.8-165 to 233days and 9.3-240 to 302days. Irrespective of the C/N ratios investigated, SS and BOD 5 removal efficiencies were above 95% and above 80% COD removal efficiency was observed. In addition, complete nitrification was observed throughout the investigation. However, denitrification and total nitrogen removal efficiencies reached their maximum values at the highest C/N ratio (9.3) investigated. Real-time PCR analysis revealed 10times higher ammonia oxidizing bacteria to total bacteria ratio under the highest C/N ratio condition (9.3) compared to the low C/N ratio condition (1.6).
KW - C/N ratio
KW - Denitrification
KW - Membrane bioreactor
KW - Supplementary carbon
KW - Wastewater treatment
UR - http://www.scopus.com/inward/record.url?scp=84862782074&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2011.12.102
DO - 10.1016/j.biortech.2011.12.102
M3 - Article
C2 - 22300636
AN - SCOPUS:84862782074
SN - 0960-8524
VL - 113
SP - 148
EP - 153
JO - Bioresource Technology
JF - Bioresource Technology
ER -