Journal
BIORESOURCE TECHNOLOGY
Volume 269, Issue -, Pages 50-56Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.08.057
Keywords
Anammox; Sequencing batch reactor; Nitrogen loading rate; Microbial community structure; Influence of temperature
Funding
- National Natural Science Foundation of China [51678388]
- Research Fund of Tianjin Key Laboratory of Aquatic Science and Technology
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The nitrogen removal performance and microbial communities of an Anammox sequencing batch reactor (SBR) was studied under varied temperatures with a lower nitrogen loading rate (NLR) about 0.28 kgN/m(3)/d. Results showed that the temperature could influence the nitrogen removal performance and the community structure in the Anammox SBR system. Under lower temperatures, both the nitrogen removal efficiencies and Anammox activity were in lower levels. When temperature was raised again, the Anammox activity recovered accordingly. When the temperature dropped from 33 +/- 1 degrees C to15 degrees C, the dominant Anammox bacteria shifted from Ca. Brocadia to Ca. Kuenenia in the sludge. When the temperature returned over, the abundance of Ca. Brocadia recovered, while the Ca. Kuenenia was still the dominant Anammox bacteria. This indicated that Ca. Kuenenia is more adaptable to low temperature environment than Ca. Brocadia under low NLR with temperature variation.
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