کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
682813 | 888991 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enrichment of high activity nitrifers to enhance partial nitrification process
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
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چکیده انگلیسی
Partial nitrification (PN) process is an essential pre-treatment to Anammox process for nitrogen removal from ammonium-rich wastewaters. High activity nitrifiers (HANs) are considered as the key to high-rate PN process. The HANs could be successfully enriched at free ammonia (FA) concentrations of 10-20 mg NH3-N Lâ1, which differed significantly from those enriched at FA concentrations of 1-3 mg NH3-N Lâ1. The maximum specific ammonium conversion rate, half saturation constant, half inhibition constant, cell yield and decay rate were 2.87 g N gâ1 VSS dâ1, 5.82 mg N Lâ1, 8218.8 mg N Lâ1, 0.15 g VSS gâ1NH4+-N and 0.09 dâ1 for HANs at 30 °C, respectively, which endowed the PN process a volumetric conversion rate (VCR) as high as 2.22 ± 0.33 kg N mâ3 dâ1. The cultivation mode of HANs was workable and the HANs were promising as inoculum for the PN process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 101, Issue 19, October 2010, Pages 7293-7298
Journal: Bioresource Technology - Volume 101, Issue 19, October 2010, Pages 7293-7298
نویسندگان
Jianwei Chen, Ping Zheng, Yi Yu, Qaisar Mahmood, Chongjian Tang,