Abstract
A new activated sludge process modification was proposed for intermittent aeration process to achieve more stable nitrogen removal performance. A single completely mixed reactor was divided into two compartments in series and operated in intermittent aeration mode by using activated sludge simulation model. The new configuration provided competetive advantage on nitrification as well as denitrification capacity, compared to the intermittently aerated system with a single reactor. In addition, the dissolved oxygen set-point control during air-on periods was found to be an important parameter in terms of nitrogen removal.
Original language | English |
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Pages (from-to) | 1819-1829 |
Number of pages | 11 |
Journal | Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering |
Volume | 41 |
Issue number | 9 |
DOIs | |
Publication status | Published - 1 Sept 2006 |
Keywords
- Activated sludge modeling
- Aerated fraction
- Aeration control
- Cycle time ratio
- Denitrification
- Intermittent aeration
- Nitrification