کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
683197 | 888997 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Start-up of the Canon process from activated sludge under salt stress in a sequencing batch biofilm reactor (SBBR)
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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 sequencing batch biofilm reactor (SBBR) was used to start-up the completely autotrophic nitrogen removal over nitrite (Canon) process from conventional activated sludge under salt stress for 118 days. A persistent, stable partial nitrification was achieved in the SBBR when the salt concentration gradually increased to 6.5 g NaCl Lâ1. Anaerobic ammonium oxidation (Anammox) bacteria were successfully enriched from the conventional activated sludge in the SBBR after 68 days of operation. Anammox bacterial strains similar to the order Planctomycetales, genus Candidatus brocardia and genus Candidatus kuenenia were confirmed to exist in the internal layer of the biofilm via Fluorescence in Situ Hybridization (FISH) analysis. A maximal total nitrogen (TN) removal rate of 0.072 kg N mâ3 dâ1 was achieved for the Canon process when the salinity was maintained at a constant 10.0 g NaCl Lâ1 in the SBBR. This reactor may have applications for the Canon process treatment of salinity wastewaters containing high concentrations of ammonia.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 101, Issue 16, August 2010, Pages 6309-6314
Journal: Bioresource Technology - Volume 101, Issue 16, August 2010, Pages 6309-6314
نویسندگان
Zhaoji Zhang, Shaohua Chen, Peng Wu, Lifeng Lin, Hongyuan Luo,