期刊
BIORESOURCE TECHNOLOGY
卷 192, 期 -, 页码 765-773出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.06.049
关键词
Anammox; Granular sludge; Nitrogen removal; Seasonal temperature change
资金
- National Key Technologies R&D Program of China [2012BAC13B02]
- Natural Science Foundation of China [51278162]
- Science and Technology Development Program of Hangzhou [20120433B20]
- National Training Programs of Innovation and Entrepreneurship for Undergraduates [201410346017]
In this study, the effects of realistic seasonal temperatures on the nitrogen removal performance of anaerobic ammonium oxidation (anammox) and the properties of the anammox granules were comparatively investigated for 330 days. The results demonstrated that the nitrogen removal efficiency (NRE), nitrogen loading rate (NLR) and nitrogen removal rate (NRR) were decreased dramatically, as the temperature decreased from 31.2 to 2.5 degrees C. However, the nitrogen removal performance recovered andante as the temperature increased gradually. After low temperature exposure, the settleability tended to worsen, and granules appeared to be more irregular with a smaller average granule diameter, and the extracellular polymeric substances (EPS) content increased slightly, while the specific anammox activity (SAA) decreased obviously. This realistic seasonal temperatures based research was an illation of the actual operation, and could be potentially implemented to maintain stability for the application of anammox technology. (C) 2015 Elsevier Ltd. All rights reserved.
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