期刊
JOURNAL OF ENVIRONMENTAL MANAGEMENT
卷 208, 期 -, 页码 112-121出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2017.12.007
关键词
Autotrophic; Denitrification; Fish canning; Granule; Nitrogen
资金
- Spanish Government through GRANDSEA project [CTM2014-55397-JIN]
- Spanish Government through FISHPOL project [CTQ2014-55021-R]
- FEDER
- Chilean Government [CONICYT/FONDAP/15130015]
The partial nitritation-anammox (PN-AMX) process applied to wastewaters with high NaCl concentration was studied until now using simulated media, without considering the effect of organic matter concentration and the shift in microbial populations. This research work presents results on the application of this process to the treatment of saline industrial wastewater. Obtained results indicated that the PN-AMX process has the capability to recover its initial activity after a sudden/acute salt inhibition event (up to 16 g NaCl/L). With a progressive salt concentration increase for 150 days, the PN-AMX process was able to remove the 80% of the nitrogen at 7-9 g NaCl/L. The microbiological data indicated that NaCl and ammonia concentrations and temperature are important factors shaping PN-AMX communities. Thus, the NOB abundance (Nitrospira) decreases with the increase of the salt concentration, while heterotrophic denitrifiers are able to outcompete anammox aftet a peak of organic matter in the feeding. (C) 2017 Elsevier Ltd. All rights reserved.
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