Efficient and integrated start-up strategy for partial nitrification to nitrite treating low C/N domestic wastewater

Guo, Jianhua, Wang, Shuying, Huang, Huijun, Peng, Yongzhen, Ge, Shijian, Wu, Changyong and Sun, Zhirong (2009) Efficient and integrated start-up strategy for partial nitrification to nitrite treating low C/N domestic wastewater. Water Science and Technology, 60 12: 3243-3251. doi:10.2166/wst.2009.619


Author Guo, Jianhua
Wang, Shuying
Huang, Huijun
Peng, Yongzhen
Ge, Shijian
Wu, Changyong
Sun, Zhirong
Title Efficient and integrated start-up strategy for partial nitrification to nitrite treating low C/N domestic wastewater
Journal name Water Science and Technology   Check publisher's open access policy
ISSN 0273-1223
1996-9732
Publication date 2009-01-01
Year available 2009
Sub-type Article (original research)
DOI 10.2166/wst.2009.619
Volume 60
Issue 12
Start page 3243
End page 3251
Total pages 9
Place of publication London, United Kingdom
Publisher I W A Publishing
Language eng
Formatted abstract
Nitrogen removal via the nitrite pathway has the potential of reducing the requirements for aeration consumption and carbon source. However, the development of an efficient and quick start-up strategy for partial nitrification to nitrite has proven difficult in the treatment of low strength wastewater. In this study, the feasibility of partial nitrification achieved by using real-time aeration duration control was not only demonstrated from the kinetic mechanism, but also was validated in three sequencing batch reactors (SBRs) fed with low C/N domestic wastewater. Nitrite accumulation could be achieved when aeration was terminated as soon as an inflexion pH point was reached (the dpH/dt became from negative to positive). The reduction or limitation of the NOB growth could be achieved through aeration duration control, due to leaving no extra time for NOB to convert the accumulated nitrite. The experimental operation results also showed that partial nitrification with nitrite accumulation ratios of over 80% was achieved successfully in these three reactors with process control. Fluorescence in situ hybridization (FISH) analysis indicated the reduction of NOB was achieved and AOB became the dominant nitrifying bacteria. Moreover, an integrated start-up strategy based on aeration duration control was proposed to quickly achieve partial nitrification to nitrite. 
Keyword Aeration duration control
Ammonia oxidizing bacteria (AOB)
Biological Nitrogen Removal
Nitrite oxidizing bacteria (NOB)
Partial nitrification
Sludge population optimization
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID 2006AA06Z319
50778005
EDB S07/1-53974092
QAK200802
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Advanced Water Management Centre Publications
 
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