کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10161193 294 2005 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Continuous denitrification by external electron-donor supply utilizing an algorithm-based software controller
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Continuous denitrification by external electron-donor supply utilizing an algorithm-based software controller
چکیده انگلیسی
This paper presents the development and application of a knowledge-based software controller for the external electron-donor supply in the anaerobic denitrification stage. The basic principle of the control concept is based on the continuous measurement of the methane concentration in the off-gas. Since under anoxic conditions and incomplete NOx− removal the denitrifying species out-compete efficiently the methanogens for the carbon source, the appearance of methane at a significant concentration (≥0.3%) in the gas phase indicates the complete denitrification and the increasing consumption of the C-source by the methanogens. Thus, a software controller that uses the methane concentration as variable was designed for process control and tested in different reactor types (CSTR, Fluidized bed). The necessary amount of the external electron-donor can be kept at the optimal level without any undesired accumulation of nitrite or nitrate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochemical Engineering Journal - Volume 25, Issue 2, September 2005, Pages 179-186
نویسندگان
, , ,