Proceedings of the 5th International Conference on Advanced Design and Manufacturing Engineering

Shortcut nitrification-denitrification can be attributed to the operation pattern of intermittent aeration profile

Authors
C.D. Gao, S.S. Fan, E.L. Jiao, Y. Tian, R.F. Li
Corresponding author
C.D. Gao
Keywords
Intermittent aeration profile; shortcut nitrification-denitrification; SBR; predenitrification
Abstract
In this study, two lab-scale reactors were set up and operated in this study, include a sequencing batch reactor for batch tests and a continuous predenitrification bioreactor for regular operation. Batch tests fed by Synthetic wastewater (acetate) and operated in intermittent aeration profile, demonstrate that the alternating anoxic/aerobic condition can inhibit NOB and induce nitrite accumulation from vary first time, though the sludge is collected from a complete nitrification-denitrification process. Intermittent aeration profile applied on a continuous predenitrification reactor treating low-strengthen municipal wastewater and realized partial shortcut nitrification-denitrification without changing any other operation parameters, which increased TN re-moval rate from average 60% to 70% without add extra carbon resources.
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