کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
681957 888973 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study on nitrogen removal performance of sequencing batch reactor enhanced by low intensity ultrasound
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Study on nitrogen removal performance of sequencing batch reactor enhanced by low intensity ultrasound
چکیده انگلیسی

Sequencing batch reactor (SBR) was widely used in the treatment of various wastewater. The effects of low intensity ultrasound on the nitrogen removal performance of SBR were studied. The optimum operation conditions were determined to be 35 kHz, 0.15 W cm−2, and irradiation time of 10 min. Compared with those of the control reactor, the organic, NH4+-N, NO2--N and NO3--N loads of the ultrasound enhanced reactor (UER) were improved by 16.5%, 35.0%, 41.7% and 61.9%, respectively. Increased 2,3,5-triphenyl tetrazolium chloride-dehydrogenase and nitrification activities were observed with sludge in UER. Furthermore, negligible negative effects of ultrasound irradiation on the settle ability and sludge concentration were found, which resulted in no decrease of the nitrogen removal performance of the UER.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 102, Issue 10, May 2011, Pages 5717–5721
نویسندگان
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