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Optimization of nitrogen removal performance in a single-stage SBR based on partial nitritation and ANAMMOX
- Source :
- Water Research. 162:105-114
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- A partial nitritation (PN)/anaerobic ammonium oxidation (ANAMMOX) process in sequencing batch reactor (SBR) was successfully developed to treat high-strength ammonium wastewater. The feed distribution in the SBR cycle and sub-cycles was considered as the main operating strategy, and was optimized using a response surface methodology (RSM)-based optimization technique. In the SBR cycle, the maximum nitrogen removal rate (NRR) of 0.79 ± 0.01 kg m−3 d−1 was achieved by applying a feed distribution strategy that considered the kinetic characteristics of ANAMMOX and ammonia oxidizing bacteria (AOB). However, this strategy negatively affected the nitrogen removal efficiency (NRE) due to alkalinity loss. Therefore, the feed distribution in the SBR sub-cycles with respect to the NRE and the NRR was further studied. The nitrogen removal performance was optimized in the optimum region and an NRE of 88% and an NRR of 0.84 kg m−3 d−1 were achieved. The optimized model was verified in confirmation test. The RSM-based optimization results provide insights into the feed distribution strategy for achieving single-stage PN/ANAMMOX SBR operation.
- Subjects :
- Environmental Engineering
Nitrogen
0208 environmental biotechnology
Alkalinity
Sequencing batch reactor
02 engineering and technology
Wastewater
010501 environmental sciences
01 natural sciences
Nitrogen removal
chemistry.chemical_compound
Bioreactors
Ammonium Compounds
Ammonium
Response surface methodology
Waste Management and Disposal
0105 earth and related environmental sciences
Water Science and Technology
Civil and Structural Engineering
Single stage
Ecological Modeling
Pulp and paper industry
Pollution
020801 environmental engineering
chemistry
Anammox
Denitrification
Oxidation-Reduction
Subjects
Details
- ISSN :
- 00431354
- Volume :
- 162
- Database :
- OpenAIRE
- Journal :
- Water Research
- Accession number :
- edsair.doi.dedup.....e454b1230a3089079e77d49a1084379b