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Detection of Denitrification Completion Using Pattern Matching Method in Sequencing Batch Reactor(SBR)  

Kim, Ye-Jin (Institute for Environmental Technology and Industry, Pusan National University)
Ahn, Yu-Ga (Department of Environmental Engineering, Pusan National University)
Shin, Jung-Phil (Department of Computer Software, The University of Aizu, Japan)
Kim, Chang-Won (Department of Environmental Engineering, Pusan National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.29, no.8, 2007 , pp. 944-949 More about this Journal
Abstract
The profiles of on-line sensors such as DO, ORP and pH can provide useful information about pollutant removal reaction in sequencing batch reactor. For detection of denitrification completion, the nitrate hee point from ORP profile has been considered as a main indicator of denitrification completion. However, many researchers pointed out that the nitrate knee usually disappeared been the progress of denitrification is so fast and it makes the fault at detection of denitrification completion. In this paper, dynamic time warping(DTW) method and discriminant analysis were used to detect and isolate the profiles of two cases, denitrification completed and uncompleted. As the results, proposed methods can detect state of denitrification successfully.
Keywords
Denitrification; Discriminant Analysis; Dynamic Time Warping; ORP; Sequencing Batch Reactor;
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