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)
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Start-up of the Canon process from activated sludge under salt stress in a sequencing batch biofilm reactor (SBBR)
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 L−1. 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 m−3 d−1 was achieved for the Canon process when the salinity was maintained at a constant 10.0 g NaCl L−1 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
نویسندگان
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