Enhancing nitrogen removal in an Orbal oxidation ditch by optimization of oxygen supply: Practice in a full-scale municipal wastewater treatment plant
Bioprocess and Biosystems Engineering, ISSN: 1615-7591, Vol: 35, Issue: 7, Page: 1097-1105
2012
- 22Citations
- 21Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Metrics Details
- Citations22
- Citation Indexes22
- 22
- CrossRef13
- Captures21
- Readers21
- 21
Article Description
Seven different aeration modes, in which oxygen supply was changed by adjusting the number of aerators, were designed and applied in a full-scale municipal wastewater treatment plant with Orbal oxidation ditch to investigate the influence of dissolved oxygen (DO) on nitrogen removal performance. The full-scale experiment results of 574 days showed that nitrogen removal efficiency depended on the degree of nitrification and denitrification in the outer channel, which was the largest contributor for TN removal in the Orbal oxidation ditch. Appropriate aeration control in the outer channel was essential to balance nitrification and denitrification in the Orbal oxidation ditch. When DO was as low as about 0.2 mg/L in the outer channel, the highest TN removal efficiency of 75% was obtained. Microbial analysis confirmed that aerobic and anaerobic bacteria coexisted in the outer channel. The greater species diversity and more intensive activities of these bacteria in aeration Mode V may be responsible for the higher TN removal efficiency compared with Mode III. These results suggest that different aerated conditions in the Orbal oxidation ditch might have a significant effect on microbial community characteristics and nitrogen removal efficiencies. © 2012 Springer-Verlag.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84865351181&origin=inward; http://dx.doi.org/10.1007/s00449-012-0694-4; http://www.ncbi.nlm.nih.gov/pubmed/22349987; http://link.springer.com/10.1007/s00449-012-0694-4; http://www.springerlink.com/index/10.1007/s00449-012-0694-4; http://www.springerlink.com/index/pdf/10.1007/s00449-012-0694-4; https://dx.doi.org/10.1007/s00449-012-0694-4; https://link.springer.com/article/10.1007/s00449-012-0694-4
Springer Science and Business Media LLC
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