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http://dx.doi.org/10.9798/KOSHAM.2011.11.3.237

Nitritation at Various Temperature Conditions - Using Anaerobic Digester Supernatant  

Gil, Kyung-Ik (서울과학기술대학교 건설공학부)
Im, Ji-Yeol (서울과학기술대학교 토목공학과)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.11, no.3, 2011 , pp. 237-243 More about this Journal
Abstract
As the effluent quality standard of the municipal wastewater treatment plant (MWTP) has been strengthened, the treatment of the recycle water containing high concentration of ammonium nitrogen has been considered as one of retrofit methods for upgrading the exising MWTPs. In this study, nitritation, economic nitrogen removal process, was induced by laboratory-scale reactor at the $35^{\circ}C$, $20^{\circ}C$, and $10^{\circ}C$ temperature conditions using anaerobic digester supernatant. The stable nitritation was achieved over $20^{\circ}C$, but nitrification was induced at $10^{\circ}C$. It means that the nitritation was affected by SRT and temperature. SRT, demanded for nitritation, is changed according to the temperature. Therefore, it is considered that SRT and temperature are important factors in nitritation. Also, it is approved that inducing the ammonium nitrogen removal and the nitritation are more beneficial over $20^{\circ}C$. The conclusion of this study can be used for the important basic reference when nitritation process is applied for MWTPs.
Keywords
Nitritation; Recycle water; Anaerobic digester supernatant; Temperature; BNR(Biological Nutrient removal);
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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