کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10395447 | 888979 | 2011 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High-rate partial nitrification treatment of reject water as a pretreatment for anaerobic ammonium oxidation (anammox)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
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چکیده انگلیسی
In this study, a lab-scale swim-bed partial nitrification reactor was developed to treat ammonium-rich reject water to achieve an appropriate NO2--N/NH4+-N mixture that could serve as a pretreatment for anaerobic ammonium oxidation (anammox). Strictly controlling the DO concentration was adopted as the main operational strategy. In addition, the influent concentrations of inorganic carbon/ammonium (IC/NH4+) and alkalinity/ammonium (Alk/NH4+) that were approximately 0.8 and 4.8, respectively, were regarded as the suitable ratios for the steady and high-rate operation of the reactor in this study. When reject water that was not diluted was introduced to this system, the maximum nitrogen loading rate was 5.9Â kg-N/m3/day, the ammonium conversion rate was 3.1Â kg-N/m3/day, and the effluent NO2-N/(NO2-NÂ +Â NO3-N) percentage ratio was over 99.9%. Furthermore, DNA analysis confirmed the existence of AOB, which was responsible for the stable performance that was achieved in the PN reactor.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 102, Issue 4, February 2011, Pages 3761-3767
Journal: Bioresource Technology - Volume 102, Issue 4, February 2011, Pages 3761-3767
نویسندگان
Li Zhang, Jiachun Yang, Daisuke Hira, Takao Fujii, Kenji Furukawa,