TY - JOUR
T1 - Nitrification performance and microbial ecology of nitrifying bacteria in a full-scale membrane bioreactor treating TFT-LCD wastewater
AU - Whang, Liang Ming
AU - Wu, Yi Ju
AU - Lee, Ya Chin
AU - Chen, Hong Wei
AU - Fukushima, Toshikazu
AU - Chang, Ming Yu
AU - Cheng, Sheng Shung
AU - Hsu, Shu Fu
AU - Chang, Cheng Huey
AU - Shen, Wason
AU - Huang, Chung Kai
AU - Fu, Ryan
AU - Chang, Barkley
N1 - Funding Information:
This work was financially supported by the Tree Valley Foundation and the National Science Council of Taiwan, Republic of China (NSC 94-2211-E-006-025, NSC 95-2221-E-006-167, NSC-96-2221-E-006-030, NSC 97-2221-E-006-045-MY3, NSC 100-2221-E-006-034-MY3).
PY - 2012/10
Y1 - 2012/10
N2 - This study investigated nitrification performance and nitrifying community in one full-scale membrane bioreactor (MBR) treating TFT-LCD wastewater. For the A/O MBR system treating monoethanolamine (MEA) and dimethyl sulfoxide (DMSO), no nitrification was observed, due presumably to high organic loading, high colloidal COD, low DO, and low hydraulic retention time (HRT) conditions. By including additional A/O or O/A tanks, the A/O/A/O MBR and the O/A/O MBR were able to perform successful nitrification. The real-time PCR results for quantification of nitrifying populations showed a high correlation to nitrification performance, and can be a good indicator of stable nitrification. Terminal restriction fragment length polymorphism (T-RFLP) results of functional gene, amoA, suggest that Nitrosomonas oligotropha-like AOB seemed to be important to a good nitrification in the MBR system. In the MBR system, Nitrobacter- and Nitrospira-like NOB were both abundant, but the low nitrite environment is likely to promote the growth of Nitrospira-like NOB.
AB - This study investigated nitrification performance and nitrifying community in one full-scale membrane bioreactor (MBR) treating TFT-LCD wastewater. For the A/O MBR system treating monoethanolamine (MEA) and dimethyl sulfoxide (DMSO), no nitrification was observed, due presumably to high organic loading, high colloidal COD, low DO, and low hydraulic retention time (HRT) conditions. By including additional A/O or O/A tanks, the A/O/A/O MBR and the O/A/O MBR were able to perform successful nitrification. The real-time PCR results for quantification of nitrifying populations showed a high correlation to nitrification performance, and can be a good indicator of stable nitrification. Terminal restriction fragment length polymorphism (T-RFLP) results of functional gene, amoA, suggest that Nitrosomonas oligotropha-like AOB seemed to be important to a good nitrification in the MBR system. In the MBR system, Nitrobacter- and Nitrospira-like NOB were both abundant, but the low nitrite environment is likely to promote the growth of Nitrospira-like NOB.
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U2 - 10.1016/j.biortech.2012.04.092
DO - 10.1016/j.biortech.2012.04.092
M3 - Article
C2 - 22595093
AN - SCOPUS:84866034199
SN - 0960-8524
VL - 122
SP - 70
EP - 77
JO - Bioresource technology
JF - Bioresource technology
ER -
