期刊
CHEMICAL ENGINEERING JOURNAL
卷 197, 期 -, 页码 199-203出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2012.05.036
关键词
Intermittent aeration; Moving bed sequencing batch reactor; Total nitrogen removal; Simultaneous nitrification and denitrification; Polyurethane foam
资金
- Universiti Sains Malaysia under the Research University (RU) [1001/PKIMIA/814149]
- MyBrain 15 (MyPhD) programme
This study was conducted to evaluate the performance of moving bed sequencing batch reactor integrated with intermittent aeration strategy (IA-MBSBR) in nitrogen removal from low COD/N wastewater. The IA-MBSBR with a packing volume of 8% (v/v) of 8-mL polyurethane (PU) foam cubes was capable of achieving a total nitrogen (TN) removal of 57% primarily via simultaneous nitrification and denitrification (SND) process. From the batch experiments, the stored carbon substrate in the biomass located inside the acclimated PU foam cubes was found to be responsible for facilitating the denitrification process. The suspended-growth biomass was found to play the major role in the process of oxidizing the ammonium nitrogen (NH4+-N) to oxidized nitrogen (NO2--N and NO3--N). Among the batch reactors operated with the same IA strategy and packed with 20%, 30% and 40% (v/v) of 8-mL acclimated PU foam cubes, complete TN removal was achieved in the reactor with 30% of support media concentration. (C) 2012 Elsevier B.V. All rights reserved.
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